A connection that looks simple on your itinerary can turn stressful when terminals, security checks, baggage rules, or entry requirements get in the way. Here are seven mistakes to watch for before you fly.
Connection requirements depend on the airport, airlines, ticket arrangement, nationality, and route. A scheduled layover time alone cannot guarantee that a connection is possible.
MISTAKE 01
Booking a Connection That Is Too Tight
A short layover may leave little room for a late arrival, a long walk, security screening, or a terminal change. The connection time shown during booking does not mean every traveler will make it.
Airlines and airports use different connection processes, and a legal minimum connection time is not a guarantee against missed flights.
TRAVEL TIP: Check the airport's transfer instructions and leave extra time when your itinerary involves additional procedures.
MISTAKE 02
Assuming Your Flights Use the Same Terminal
Connecting flights can depart from different terminals or concourses. Moving between them may involve walking, a train, a shuttle, or another security checkpoint.
Terminal assignments can also change, so the details shown when you book may not be final.
TRAVEL TIP: Review the airport's official terminal and transfer information, then recheck your flight details before departure.
MISTAKE 03
Forgetting About Immigration and Security Checks
Some connections require immigration, customs, or security screening even when you are only changing planes. The exact process depends on the country, airport, and route.
For example, many international arrivals into the United States must complete entry procedures before continuing to a domestic flight.
TRAVEL TIP: Verify whether your connection involves entering the country, clearing security again, or both.
MISTAKE 04
Assuming Checked Bags Transfer Automatically
Checked baggage may travel through to your final destination, but not on every itinerary. Some connections require you to collect your bag and check it again.
This is especially important when changing airlines, traveling on separate tickets, or completing customs procedures.
TRAVEL TIP: Ask where your bag is tagged to and whether you must collect and recheck it at your connecting airport.
MISTAKE 05
Overlooking the Risk of Separate Tickets
Two flights purchased separately can look like one journey on your calendar, but they may not have the same protections as a connection booked on a single ticket.
If the first flight is delayed, the next airline may treat you as a missed departure rather than a protected connecting passenger.
TRAVEL TIP: Check whether your flights are on one ticket or separate bookings, and allow more time for self-transfers.
MISTAKE 06
Ignoring Transit Visa and Entry Requirements
Some countries require a transit visa or other authorization even when you do not plan to leave the airport. Requirements may change depending on your passport, residence status, destination, and whether you pass border control.
A connection that requires changing airports or collecting baggage can create additional entry requirements.
TRAVEL TIP: Check official transit and entry requirements for every country on your route before booking.
MISTAKE 07
Not Rechecking Your Connection Before Departure
Schedules, terminals, boarding gates, and transfer arrangements can change. A connection that looked comfortable at booking may become much tighter after a schedule update.
Do not rely only on an old confirmation email. Review your current itinerary and the airline's latest notices.
TRAVEL TIP: Recheck your flights before travel and monitor airline notifications during the journey.
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Official Travel Resources
Airline, airport, border, and transit rules vary by route and traveler and may change. Always confirm requirements with the relevant airlines, airports, and official government authorities. GoChecked is a travel preparation aid and cannot guarantee boarding, entry, or a successful connection.
Last reviewed: October 8, 2026.