You may be well-versed in checking visa requirements for your destination, but what about the countries you transit through?
Transit rules can be surprisingly complicated, and even frequent travellers get caught out by rules they didn’t know existed.
The rules usually depend on whether you’re staying airside or passing through immigration. Collecting your luggage or changing terminals may require a visa. In some countries, you may need travel authorisation even if you are only connecting.
The consequences can be serious. Airlines can refuse boarding if you don’t have the correct documents for a country you’re only passing through, even if you have no intention of leaving the airport.
Here’s everything you need to know to avoid being caught out on future trips:
In this post:
What is a Transit Visa?
An airport transit visa is designed for passengers who remain in the international transit area without formally entering the country.
Importantly, being allowed to transit without a visa does not necessarily mean you can enter the country.
Fortunately, British passport holders can transit through many countries without a visa, but some surprising exceptions remain.
Transit Visa Rules to Watch Out For
1. You Need an ESTA to Transit in the USA
The US is well known for having some of the strictest entry requirements for British passport holders. Even if you’re only connecting through a US airport, you’ll need an ESTA to travel under the Visa Waiver Programme. Otherwise, you’ll need a US visa or other travel permission.
If you’re not eligible for the Visa Waiver Programme, you’ll need an appropriate US visa, such as a C-1 transit visa, unless you already hold a suitable valid visa. For example, travelling to Cuba on or after 12th January 2021 generally makes you ineligible for the Visa Waiver Programme.
Applying for a US visa can take considerably longer, potentially requiring an embassy appointment and adding weeks or even months to your travel preparations. That’s a lot of hassle for a connecting flight.
Many flights to South America, the Caribbean and Canada route via the US. Consider this when choosing an airline.
2. Transiting Through India
British passport holders can generally transit through an Indian airport without a visa if they remain in the international transit area and have a confirmed onward flight. This depends on whether the airport and airlines can accommodate an airside transfer.
If you need to collect your luggage, check in again at a landside check-in desk or take a domestic flight, you’ll normally need to pass through immigration and have an appropriate Indian visa.
This can be particularly problematic with separate tickets, even if you’re travelling with only hand luggage.
Double-check whether you can remain airside and get your onward boarding pass without passing immigration.
I’ve read plenty of horror stories about people losing out on thousands and being denied boarding in the UK due to visa issues when transiting.
3. Australia’s Eight-Hour Rule
British passport holders can transit through Australia without a visa if they have a confirmed onward flight to a third country within eight hours, remain airside, and have the correct documents for the next destination.
Not all Australian airports have suitable international airside transfer facilities, and you may need a visa if you have to collect luggage, change terminals or pass through immigration.
Australia also has a free Transit visa, which allows you to leave the airport and enter Australia for up to 72 hours while travelling to another country. However, you’ll need to apply and receive approval before travelling.
4. The Schengen Area
British passport holders can generally transit through Schengen airports without a visa.
However, if you’ve already used your 90-day allowance within a rolling 180-day period, you normally won’t be able to pass through immigration to collect luggage, change flights, or stay in a hotel without the appropriate permission. You would normally need to wait until you have sufficient days available again or hold another form of permission, such as a qualifying residence permit or national long-stay visa.
If you remain airside in the international transit area and your onward flight is to a country outside the Schengen Area, this is fine. However, this can differ by airport. Separate tickets can complicate this, particularly if you need to collect luggage or check in again.
Some airports don’t have suitable international airside transit facilities, so you may need to enter the country even if you’re only connecting.
Even if your final destination is outside Europe, you may still need to enter the Schengen Area during your connection. For example, if you fly London – Paris – Frankfurt – New York, the flight between Paris and Frankfurt is considered an intra-Schengen flight. This means you’ll need to pass through immigration in Paris and meet the Schengen entry requirements.
Passing Through Immigration Changes the Rules
If you need to pass through immigration during your connection, you’ll have to meet the country’s entry requirements, even if you’re only there for a few hours.
Some countries offer transit visas for this purpose, while others require a different type of visa. Even if you can enter visa-free, you may still need to complete paperwork or apply for travel authorisation before you can enter the country.
5. Collecting Your Luggage or Booking Separate Tickets
If you haven’t booked a flight with luggage checked through to your final destination, you’ll normally need to pass immigration to collect it.
Don’t assume an airline partnership or codeshare means your luggage will automatically travel to your final destination.
Even if you’re travelling with hand luggage only, booking separate tickets can mean you need to pass through immigration to check in for your next flight. This depends on the airport and airline arrangements, not simply whether you’re flying with different airlines.
In either case, an airport transit visa may not be sufficient. Keep this in mind, especially if you book a cheap redemption to a major hub and then need to book a separate fare onwards.
6. Changing Terminals or Airports
Even with only hand luggage, if your connection involves changing terminals, some airports don’t have the facilities to do this without formally entering the country.
Always check whether an airside transfer is available between your arrival and departure terminals.
If you’ve booked two separate flights that arrive and depart from different airports, you’ll need to travel between them and therefore pass through immigration to enter the country.
This might seem obvious, but it’s surprisingly easy to overlook when booking, especially in cities with multiple airports. For example, you could arrive at Bangkok Suvarnabhumi (BKK) only to discover that your onward flight departs from Don Mueang (DMK).
Booking sites like Skyscanner often show flights like this with warnings, but they are easy to miss if you’re distracted by a great fare.
Always double-check the airport codes when booking connecting flights, as you may need a visa or other entry permission to make the transfer.
7. Your Transit Hotel May Be Landside
Whether the airline provides a free transit hotel or you’ve booked one, it may be after immigration and outside the international transit area. If you forget, you may lose money and get stuck airside.
Even if this is OK in, say, China, where UK passport holders now get 30 days visa-free entry, you’ll still need to queue at immigration, and many options are a drive from the airport.
8. Overnight Connections and Flight Disruption
Also consider overnight connections and the possibility of airside areas closing overnight, even if you plan to stay airside. If the international transit area closes overnight, you may need permission to enter the country or find an alternative connection.
Even if you have checked the transit rules carefully, an unexpected delay or cancellation can create a problem.
For example, you might have booked a perfectly legal airside connection, only to find that your replacement flight departs the following morning and the international transit area closes overnight.
Alternatively, the airline might offer you a hotel outside the airport. That sounds helpful, but if you do not have permission to enter the country, you may not be able to use it.
Keep this in mind when booking complex itineraries, especially when travelling on separate tickets, as the onward airline may have no obligation to rebook you after a missed connection.
9. A Visa Is Not Automatically Included With a Stopover Programme
Airline stopovers are becoming increasingly popular and are a great way to see a new city en route to your destination. Whether you’ve booked a paid or free stopover package, don’t assume it includes a visa or permission to enter the country. This is usually separate from the stopover application, though some airlines will help you apply as part of the package.
If you have a simple transit but choose a free city tour during your layover, entry rules can vary. To leave the airport, you’ll also need to meet the country’s entry requirements.
Other Transit Rules That Can Catch You Out
10. Dual Nationality Can Complicate Transit Rules
If you hold two passports, check the transit rules for both nationalities. One may allow visa-free transit while the other requires a visa, and some countries take both nationalities into account, regardless of which passport you’re using.
You can use different passports for different parts of your journey, but some citizen-based restrictions still apply. If you’re relying on your second passport for a visa-free connection, make sure your airline knows and that you have the right documents.
You also need to consider the rules when returning home. Since 25th February 2026, if you’re a British dual national, you’ll generally need a valid British or Irish passport, or a certificate of entitlement to the right of abode linked to your other passport, to travel to the UK. Some exceptions do apply. Without the correct documents, the airline could refuse to board you.
11. Yellow Fever Vaccination Requirements
You may need proof of a yellow fever vaccination to enter some countries, such as South Africa, if you’re arriving from a yellow fever risk country; this also applies to people who have transited through a risk country for more than 12 hours.
12. Transit Visa Rules Can Change
Just because you’ve transited visa-free at an airport before doesn’t mean the same will apply this time. Transit rules also change over time as countries introduce new rules for passport holders from different countries.
China is a good example. British passport holders can currently enter visa-free for up to 30 days. However, this arrangement is currently due to end on 31st December 2026. Unless extended, you’ll need to check whether you qualify for China’s separate visa-free transit scheme or require a visa.
Airlines Can Refuse to Let You Board Without the Correct Transit Documents
Airlines usually check transit documents if you need them for the country you’re travelling through. Without the correct documents, the airline could refuse to board you. The same goes for airlines checking visa and passport requirements.
If airlines allow passengers to fly without the correct documents, they can be fined. Even if you regularly fly the same route, it’s always worth checking if anything has changed to avoid getting caught out.
How to Check Transit Visa Rules
Start by checking Gov.uk for the latest advice and visa requirements for both your destination and any countries you’re transiting through. If you travel regularly or have an upcoming trip, sign up for email alerts for any changes to travel advice.
The IATA Travel Centre is also useful for checking passport, visa and health requirements. It uses Timatic, the database airlines rely on to check passengers’ travel documents.
You should also check each country’s official immigration and embassy website, as well as any specific rules your airline has.
Before you travel, make sure you know:
- Whether your baggage can be checked through to your final destination
- Whether your flights are arriving and departing from the same airport
- Whether you need to pass immigration during your connection
- Whether an airside terminal transfer is available between your arrival and departure terminals
- Whether you need a visa, transit visa or electronic travel authorisation to transit or enter the country
- Whether the transit area is open overnight
- Whether your transit hotel is landside or airside
- Whether you can get a boarding pass for your onward flight without visiting a landside check-in desk
For a complicated self-transfer, I would also contact the airline before travel.
Some transit visas can take days or even weeks to acquire, especially if you need an embassy appointment. Don’t make an expensive mistake.
Final Words
A few minutes checking the requirements before booking could save you from losing an expensive ticket or being stranded halfway through your journey.
Have you ever been caught out by a transit visa or an unexpected rule? Let us know in the comments below.
Read More in this series:
Things that can get you refused entry to your destination
Unexpected passport rules that could catch British passport holders out
