The Visa You Didn't Know You Needed
One of the most common pitfalls for international travellers is the transit visa. Many assume that if they aren't leaving the airport, they don't need a visa for their layover country. This can be a costly mistake. Countries like the United States and
the United Kingdom, for example, often require Indian passport holders to have a specific transit visa even to just switch planes. The US C-1 transit visa is a must for most Indians transiting through any American airport, with very few exceptions. Similarly, the UK requires a Direct Airside Transit Visa (DATV) for many, though holding a valid visa for countries like Canada, the USA, or Australia can sometimes provide an exemption. On the bright side, recent changes have made things easier in Europe. As of April 2026, France removed the airport transit visa requirement for Indians who stay within the international zone. Germany followed suit in June 2026 for its major airports. Always verify the specific rules for your nationality and your exact itinerary, as they can change.
The Baggage Re-Check Shuffle
You checked your bag all the way to your final destination, so you don't have to worry about it during your layover, right? Not always. While most airlines with single-ticket bookings will transfer your luggage automatically, there are critical exceptions. When entering certain countries, including the United States and Canada, all travellers must collect their checked baggage, clear customs, and then re-check their bags for their onward flight. This rule applies even if you have a domestic connecting flight immediately after your international arrival. Another trap is booking separate tickets for different legs of your journey. In this scenario, you will almost certainly have to collect your luggage and check in again with the new airline. This can be time-consuming, so ensure your layover is long enough to accommodate this entire process, from baggage claim to security and finding your next gate.
Hand Luggage Headaches
The rules for carry-on luggage are strict and can cause delays at security. The most well-known is the restriction on liquids, aerosols, and gels (LAGs), which must be in containers of 100ml or less and fit into a clear, resealable one-litre bag. But another item causing confusion is the power bank. For safety reasons due to their lithium-ion batteries, power banks are strictly prohibited in checked-in luggage and must be carried in your hand baggage. However, many airlines now also prohibit the use of power banks to charge devices during the flight. There are also limits on capacity, typically up to 100Wh, and you're usually restricted to carrying a maximum of two spare batteries or power banks. Always check your power bank's capacity and your airline’s specific policy before you fly to avoid having it confiscated.
When Airlines Don't Align
A single journey can involve multiple airlines, especially on codeshare flights where one airline sells a ticket for a flight operated by another. While this is convenient, it can mean navigating different sets of rules. Baggage allowances, for instance, can vary significantly between carriers. One airline might offer a generous weight limit, while its partner on the next leg has stricter, lighter limits. Generally, the rules of the airline operating the longest leg of the journey apply, but this isn't always straightforward. These differences can also extend to check-in procedures and even the terminal you need to be in. Some large airports require you to exit the transit area and go through security again to get to a terminal used by a different airline, which could trigger a visa requirement you weren't expecting. Before booking, clarify the baggage rules for each airline in your itinerary.
Customs and Biosecurity Traps
Customs is typically the final hurdle at your destination, but transit can sometimes involve a customs or biosecurity check. As mentioned, if you have to collect your bags in countries like the US, you will have to pass through customs with them. Beyond that, be mindful of biosecurity rules in your transit country, which are especially strict in places like Australia and New Zealand. Carrying seemingly harmless items like fruits, homemade food, seeds, or certain wooden products can lead to questioning, confiscation, and even fines if you fail to declare them. Even if you plan to consume the item on the plane, it's best to leave it behind. When in doubt, always declare any food or organic materials to an officer. It is far better to have an item taken away than to face penalties for not declaring it.
