International travel does not begin at the airport. Before check-in, there is a less exciting but essential task: finding out which documents, visas, travel authorizations, and vaccination certificates will be required throughout your itinerary. A single missing item can prevent you from boarding, even if your flights were ticketed correctly and every hotel has been confirmed.
The challenge is that there is no universal checklist. Requirements vary according to the passport you use, your destination, the purpose and length of your stay, your travel dates, and even the airports where you connect. A document that is optional for a friend may be mandatory for you, even if you are taking the same flight.
The good news is that Sherpa brings much of this information together in a personalized search. In this guide, you will learn how to use the platform, understand its results, and verify every important rule through official sources. Keep reading and review your next itinerary step by step.
Why You Should Research Entry Requirements Before Traveling
Many travelers think international documentation means only a passport and, in some cases, a visa. In reality, the list can be much longer. Depending on the country and the passenger’s circumstances, authorities may require an electronic travel authorization, an international vaccination certificate, travel insurance with minimum coverage, proof of onward travel, accommodation details, evidence of sufficient funds, blank passport pages, or a specific amount of passport validity beyond the planned trip.
Airlines also check passenger documents before departure. They do this because transporting someone who does not meet the destination’s entry rules may expose the airline to penalties and repatriation costs. As a result, the first obstacle may appear at the check-in counter or boarding gate—before the traveler ever reaches immigration at the destination.
The risk becomes greater when an award itinerary combines different loyalty programs, airlines, and separate tickets. A positioning flight, a self-planned connection, or an airport change may require the passenger to enter the connecting country formally. In situations like these, checking only the final destination is not enough.
Timing matters as well. Some documents can be issued quickly, while consular visas may involve application forms, interviews, supporting documents, and several weeks of processing. Certain vaccines also need to be administered in advance before the certificate becomes valid for travel. The earlier you research the requirements, the more time you have to correct any problems.
This is especially important before transferring points to an airline program. Many loyalty transfers cannot be reversed. An attractive award seat may have little value if the routing includes a country you cannot enter or transit without a document that cannot be obtained in time.
What Is Sherpa and What Is It Used For?
Sherpa is an independent platform that organizes travel requirements for more than 200 destinations. Depending on the itinerary, its results may include information about visas, electronic travel authorizations, accepted travel documents, passport validity, blank pages, vaccinations, health forms, and other entry conditions.
Its biggest advantage is that it turns a generic question into an itinerary-specific search. Instead of asking only, “Does a Brazilian citizen need a visa?”, the platform considers details such as nationality, origin, destination, date, and transit points. This personalization is essential because travel rules do not depend solely on the country you intend to visit.
Sherpa, however, is not a government agency. Its terms and conditions explain that requirements may change without notice and that travelers remain responsible for ensuring their passports and other documents comply with the rules of their destination and transit countries.
That distinction defines the right way to use the service: Sherpa should be your research starting point and organizational tool, not a replacement for immigration authorities. Its report can help you identify what you may need and which government sources should be checked before departure.
Sherpa may also offer paid application services for certain visas or travel authorizations. These services can be convenient, but they are not always the official or least expensive application channel. Before paying, compare the total price, processing time, refund terms, and service fee with the official government portal.
How to Use Sherpa to Check Documents, Visas, and Vaccines
1. Open the Travel Requirements Page
Go to Sherpa’s travel requirements page. The interface may change over time, but the logic remains similar: identify who is traveling, where the journey starts, where it ends, when it takes place, and which countries are involved along the way.
Avoid beginning the process through random sponsored pages in a search engine. Because private companies can submit applications on a traveler’s behalf, always check the website address carefully. Before entering personal information or making a payment, determine whether you are on an official government portal or using a third-party service that charges an additional fee.
2. Enter the Country or Airport of Departure
Enter the location where the trip actually begins. Whenever possible, select the correct airport because the real routing may affect health and transit requirements.
For a Brazilian citizen living abroad, the departure country and country of residence should not be confused with nationality. Someone may hold a Brazilian passport, live in the United States, and start a journey in Canada. Each of those details plays a different role in the assessment.
If the trip uses separate tickets, reproduce the complete journey. For example, a GRU–MAD ticket followed by a separately issued MAD–CAI ticket should not be treated as a simple Brazil-to-Egypt journey with a protected connection. Collecting luggage, changing terminals, or checking in again may require the traveler to clear immigration in Spain.
3. Select the Correct Destination
Enter the destination country and, when requested, the arrival airport. Confirm that you selected the correct territory. Countries with similar names, overseas territories, and regions with their own immigration systems may have different requirements.
If the itinerary includes several countries, run a search for each one. A multi-country trip through Europe, Africa, or Asia should not be researched only through the first arrival airport. You must also determine where immigration clearance occurs and whether the itinerary crosses between areas with different border rules.
Cruises require particular care. The embarkation country, every port of call, and the final disembarkation point can have separate entry rules. Even if you do not plan to leave the ship at a specific port, verify whether the cruise line or local authority still requires a visa or other document.
4. Enter the Actual Travel Dates
Use your real departure and return dates. Rules may begin, expire, or change between the day you research them and the day you fly. The length of your stay can also determine which visa or authorization category applies.
If you have not booked yet, search using your estimated dates, but repeat the process as soon as the itinerary is confirmed. A search conducted today does not necessarily show what will be required six months from now.
Dates also matter for passport validity. Some countries measure the required validity from the date of entry, while others calculate it from the planned departure date. Do not make assumptions based on a general six-month rule.
5. Choose the Nationality of the Passport You Will Use
This is one of the most important fields. Select the nationality of the passport you will present at check-in and use to request entry at your destination.
Dual citizens should test both passports and determine which document will be used at each stage of the trip. One passport may provide visa-free entry but still require an electronic authorization; the other may have a completely different rule. Travelers must also follow the entry and exit laws of their countries of citizenship. Brazilian dual nationals, for example, should review consular guidance on entering and leaving Brazil with Brazilian documents.
Do not select a nationality simply because you hold permanent residence, a valid visa, or a resident card in that country. Residence and citizenship are different legal conditions. When Sherpa requests both, enter each field exactly as supported by the documents you will carry.
6. Add Connections and Transit Conditions
Include every connecting country and airport. Then determine whether you will remain airside in the international transit area or need to pass through immigration.
Several situations make formal entry into the connecting country more likely:
- separately issued tickets;
- baggage collection and recheck;
- an airport change;
- an overnight stay outside the secure area;
- a terminal without sterile international transit;
- a domestic segment after an international arrival;
- an airline that cannot check baggage through to the final destination.
A transit visa or health document may be necessary even when you do not intend to leave the airport. Yellow fever rules, for example, may consider not only where the journey started but also how long the passenger spent in an at-risk country. Brazil’s health authority, Anvisa, advises travelers to check the International Certificate of Vaccination or Prophylaxis requirement for both destinations and connections in its official yellow fever travel guidance.
7. Read Every Result Category
After you enter the details, Sherpa organizes the requirements into categories. Read all of them, including items labeled as recommendations or additional information. “Visa not required” does not mean “no requirements.”
Common categories include:
- accepted travel documents;
- minimum or remaining passport validity;
- required blank passport pages;
- visa exemption, consular visa, eVisa, or electronic travel authorization;
- maximum permitted stay;
- vaccination certificates and health forms;
- onward or return travel;
- transit rules;
- conditions associated with the purpose of travel.
Open the details for every item. Exceptions, deadlines, age rules, supporting documents, and source links often appear only after expanding the relevant section.
8. Save the Results and Record the Search Date
Take screenshots or save the report for your travel checklist. Record the date when the search was performed. Saving a result does not freeze the underlying rule; it simply creates a snapshot of the information available at that moment.
Store the report with your flight, hotel, insurance, and document confirmations. For couples, families, and groups, create an individual checklist for every traveler. Nationality, age, residence status, and travel history can produce different requirements for people taking exactly the same itinerary.
How to Interpret Each Type of Requirement
A Valid Passport Is Not Necessarily an Acceptable Passport
A passport that has not expired may still fail the destination’s remaining-validity rule. Countries may also impose conditions involving blank pages, physical damage, issue date, or document type.
Do not automatically apply the familiar “six-month rule” to every trip. Some destinations require six months of remaining validity; others require three months beyond the planned departure date; some accept a passport that is valid only for the duration of the stay. The correct standard is the rule published by the destination authority for your specific itinerary.
Brazilian travelers who need to renew their passports should use the Federal Police’s official passport service. Apply early and do not make emergency issuance part of your normal travel strategy.
Check the document’s physical condition as well. Water damage, torn pages, an unreadable data page, or a damaged electronic chip can create problems even if the expiration date is acceptable.
Visa-Free Entry Does Not Guarantee Admission
When a result says that no visa is required, it means that under the circumstances entered, the traveler does not need to obtain that particular visa before departure. An immigration officer can still request supporting information and make the final admission decision.
Travelers must respect the authorized purpose, maximum stay, and other conditions. Tourism, study, work, residence, and transit are different categories. Entering as a tourist to perform paid work, for example, may violate the rules even if short tourist visits are visa-free.
Carry documents that support the purpose of the trip, such as onward travel, accommodation details, insurance when applicable, an itinerary, and evidence of sufficient funds. There is no universal set of supporting documents, so follow the official instructions for the country you are visiting.
ETA, Electronic Authorization, eVisa, and Consular Visa Are Different Documents
An electronic travel authorization—often known as an ETA, eTA, or ESTA depending on the country—is generally a pre-travel clearance linked to a passport for passengers who do not need a traditional visa. An eVisa is a visa applied for online. A consular visa may involve a more extensive assessment, physical documents, biometrics, an interview, or an appointment at a visa center.
Read the exact name of the document in your result and verify:
- who must apply;
- the permitted purpose of travel;
- how far in advance to apply;
- estimated processing time;
- validity period;
- number of permitted entries;
- maximum length of stay;
- whether it is linked to a specific passport number;
- the government fee and any separate service charges.
If you renew your passport after receiving an authorization, check whether the approval remains valid or whether you need to apply again. Many electronic authorizations are linked directly to the passport used in the application.
Sherpa may offer to process some documents for a fee. Before purchasing this service, compare the complete cost and terms with those of the destination’s official immigration website. A service charge is not the same as a government fee, and paying an intermediary does not guarantee approval.
A Recommended Vaccine Is Different From a Required Vaccine
A vaccine can be medically recommended to protect the traveler without being required at the border. The reverse situation is also possible: a country may require proof of vaccination because of where the traveler came from or transited, even if the final destination does not have a local risk of that disease.
For yellow fever, the internationally recognized document is the International Certificate of Vaccination or Prophylaxis, commonly called the ICVP. A regular domestic vaccination record should not automatically be treated as a substitute. Brazilian travelers can use the official Gov.br service to obtain an International Certificate of Vaccination or Prophylaxis.
Brazil’s Ministry of Health travel guidance advises travelers to receive the standard yellow fever dose at least ten days before travel when the certificate is required. The World Health Organization also provides broader information on international travel and health.
Consult a qualified healthcare professional when planning travel to places with specific health risks, particularly if you are pregnant, immunocompromised, traveling with children, or managing a medical condition. An entry-requirement tool is not a substitute for individualized medical advice.
Transit Can Create a Requirement That a Direct Flight Would Avoid
A cheaper award itinerary is not always simpler from a documentation perspective. When comparing redemption options, consider the countries between your origin and final destination.
Imagine that your final destination does not require a visa for your passport, but the connection forces you to collect your luggage and clear immigration. The entry rule of the connecting country may become the deciding factor. The same issue can arise when a stopover changes the yellow fever certificate requirement or an airport transfer requires you to enter the country.
This deserves extra attention when award trips are assembled segment by segment. Before transferring points—especially when the transfer is irreversible—enter the complete itinerary into Sherpa and verify critical information through official sources.
How to Confirm the Information Found on Sherpa
After identifying the likely requirements, perform a second layer of verification. A strong process uses three types of sources:
- Sherpa: organizes the initial research and highlights the areas that require attention.
- Official authorities: confirm the legal rule through an immigration department, embassy, consulate, public health authority, or other government portal.
- The airline: clarifies operational questions involving check-in, through-checked baggage, transit, and the documents it will accept before boarding.
For another personalized reference, the IATA Travel Centre provides information about passport, visa, and health requirements. Airlines widely use Timatic data when conducting document checks.
When visiting an official website, check the domain, publication or update date, and whether the page applies specifically to your nationality, travel purpose, and length of stay. Do not rely only on an old search result, social media post, video, forum discussion, or another traveler’s experience from months earlier.
If sources disagree, do not simply choose the answer you prefer. Contact the destination’s embassy or consulate. If the uncertainty concerns boarding or transit, contact the operating airline as well. Keep any written response you receive, while remembering that the final decision on entry belongs to the border authority.
Additional Documents That Deserve Attention
Even when your passport, visa, and vaccinations are correct, other documents may still be required. Use the Sherpa report and official sources to verify whether you need:
- a return or onward ticket;
- hotel reservations or an invitation letter;
- travel insurance with minimum coverage;
- proof of sufficient funds;
- the address of your first accommodation;
- an arrival form or customs declaration;
- authorization for a minor to travel;
- an international driving permit or another document for driving;
- prescriptions and supporting paperwork for controlled medication;
- evidence connected to the stated purpose of the visit.
For Brazilian minors, permission to issue a passport should not be confused with authorization for international travel. Brazil’s Federal Police provides official information about documents and travel authorization for minors, which may be required when a child leaves Brazil alone or without one parent, subject to the applicable exceptions.
Also verify that the passenger name on every ticket matches the travel document. Surname changes, incomplete names, and discrepancies between a passport and visa can create complications. If you identify an error, contact the airline or ticket issuer before the day of departure.
Travelers carrying medication should check both the destination and transit-country rules. A medicine that is common or legally prescribed at home may be restricted elsewhere. Keep it in the original packaging and carry the prescription or medical letter when required.
Seven Common Mistakes That Can Prevent Boarding
1. Researching Only the Final Destination
Ignoring connections is one of the most dangerous mistakes. Include every country, airport, and change of ticket in your research.
2. Confusing Nationality With Residence
The passport presented determines much of the assessment. A visa or residence permit from another country may modify certain conditions, but it does not change your nationality.
3. Assuming Six Months of Passport Validity Solves Every Trip
Remaining-validity rules vary. Check the destination’s specific requirement rather than treating a common safety margin as a universal law.
4. Treating Visa-Free Travel as Bureaucracy-Free Travel
An ETA, online form, insurance policy, proof of funds, or maximum-stay rule may still apply even when no traditional visa is required.
5. Carrying Only a Domestic Vaccination Record
When a destination requires an international certificate, obtain the ICVP in the accepted format and observe the waiting period before it becomes valid.
6. Relying on a Search Performed Months Earlier
Rules change. Research during the planning stage, repeat the search once the itinerary is confirmed, and check again shortly before departure.
7. Paying an Intermediary Without Comparing the Official Portal
Some platforms offer convenience for a service fee. Check the government fee, intermediary charge, processing conditions, and official domain before providing sensitive information or paying.
A Three-Stage Checklist to Avoid Missing Anything
Before Booking or Transferring Points
- enter the complete itinerary into Sherpa;
- determine whether a visa or electronic authorization is required in advance;
- assess all connections and separate tickets;
- check passport validity and blank-page requirements;
- estimate the time and cost involved in obtaining documents;
- determine whether an entry or transit rule makes a specific routing impractical;
- research requirements before initiating an irreversible points transfer.
After Booking the Trip
- repeat the search using the exact airports and dates;
- apply for the visa, ETA, or eVisa through the appropriate channel;
- receive required vaccines and obtain the correct certificate on time;
- purchase travel insurance if required or desired;
- organize proof of onward travel, accommodation, and other supporting documents;
- verify minor-travel authorizations and medication documentation;
- store protected digital copies while keeping original documents accessible.
During the Week Before Departure
- check Sherpa and official sources again;
- confirm that every document remains valid;
- review any schedule, connection, terminal, or airport changes;
- verify baggage procedures for separate tickets;
- print or download documents that may need to be shown offline;
- prepare an individual document folder for every traveler;
- keep essential documents in your carry-on rather than checked baggage.
Conclusion
Finding the documents, visas, and vaccines required for an international trip does not need to become a confusing chain of searches. The safest method is to use Sherpa to build a personalized overview of your itinerary, review every category carefully, and confirm the important points through official sources and the operating airline.
The detail that prevents the most problems is researching the trip you will actually take: the passport you will use, your dates, purpose of travel, origin, destination, and every connection. For award travel, this check should happen before transferring points whenever the routing involves complex connections or separate tickets. A confirmed reservation is only one part of the journey; correct documentation is what allows you to reach the gate and continue to your destination.
Frequently Asked Questions About Travel Documents, Visas, and Vaccines
1. Is Sherpa an Official Government Website?
No. Sherpa is an independent platform that gathers and organizes travel requirements. Use its result as an initial guide, then confirm the rules through official immigration, embassy, consular, or public health websites.
2. If Sherpa Says I Do Not Need a Visa, Can I Travel With Only My Passport?
Not necessarily. You may still need an electronic authorization, a specific amount of passport validity, insurance, proof of onward travel, accommodation details, a vaccination certificate, or other supporting documents. Read the entire result rather than only the visa section.
3. Do I Need to Check the Rules of a Country Where I Am Only Connecting?
Yes. Depending on the airport, transit time, ticket arrangement, terminal, and baggage procedure, you may need a transit visa, permission to enter the country, or a health document. Include every connection in the search.
4. Does a Brazilian Vaccination Record Replace the ICVP?
When a country requires an International Certificate of Vaccination or Prophylaxis, do not assume that a domestic vaccination card will be accepted. Check the exact rule and obtain the ICVP through the official Gov.br service when applicable.
5. When Should I Check My Trip’s Entry Requirements?
Perform the first check before booking or transferring points, repeat it after confirming the complete itinerary, and review everything again during the week before departure. Because rules can change, an old search should never be your only reference.