Are your bags checked through or rechecked on a layover?
The honest answer is that it depends on the ticket and on the country. On one booking, bags are usually checked through to the final destination. On separate bookings, you collect and recheck them. On a connection that enters the United States, CBP’s guide describes completing arrival processing at the first port of entry before rechecking. All of this was read on official pages on 16 October 2026, and your airline has the final word for your route.
Last updated: October 16, 2026
One booking: usually checked through
Heathrow’s connecting-flights page says that for a single booking most passengers will not need to collect baggage, because it is transferred directly by the airline, and that you still go through security again. Its FAQ adds that often the baggage will be checked through to the final destination, but that the service is not available for all flights, so you should check with your airline before you fly.
The airline also quotes the minimum connection time for your booking. On a single ticket that is the time the airline expects bags and passengers to need.
Separate bookings: collect and recheck
Heathrow treats passengers on separate bookings as arriving and departing, not as connecting passengers. They have to pass immigration, collect their bags and check in again, at Arrivals and Departures. The airport adds that the minimum connection times do not apply to flights booked separately, and that you should allow extra time for baggage reclaim, passport control, moving between terminals, check-in and security.
Entering the United States: the first port of entry
CBP’s visitor guide, a PDF hosted on cbp.gov with a 2007 file date, says that because CBP processing must be completed at the first port of entry, many travelers complete all arrival processing and then proceed to a connecting flight. When the passenger exits the final CBP checkpoint, major ports of entry can immediately recheck the luggage through the TSA-required X-ray screening, and the passenger goes directly to a TSA checkpoint before the gate.
There is one published exception. A CBP press release of 8 April 2025 (the page was last modified on 9 April 2025) describes the International Remote Baggage Screening initiative: CBP officers review the X-ray images of checked bags remotely, before the aircraft lands, and connecting passengers continue without rechecking their bags unless CBP refers a bag for further inspection. It does not change TSA’s checked-baggage screening requirements. The release names a test on American Airlines’ daily Sydney (SYD) to Los Angeles (LAX) flight, with operations expected to begin on 9 April 2025, and says CBP plans to expand it to other routes and airlines. We found no official list of other routes.
What it means for your layover time
LayoverReady’s planner adds 45 minutes to the buffers when you choose “collect and recheck”. That is our planning estimate, not an official figure. Before you leave the airport on a short layover, ask your airline whether your bags are checked to the final destination. If they are not, the time to collect and recheck them comes out of your time in the city.
Frequently asked questions
Are bags transferred automatically on a connecting flight?
What happens to my bags on separate tickets?
Do I have to collect my bag when connecting in the United States?
Does the CBP remote screening change TSA rules?
Sources
Official pages read for this guide
- Heathrow: Connecting flights · read on October 16, 2026
- Heathrow: Flight connections FAQs · read on October 16, 2026
- CBP: Welcome to the United States, a guide for international visitors (PDF) · read on October 16, 2026
- CBP: International Remote Baggage Screening initiative (press release, 8 April 2025) · read on October 16, 2026