Why this guide: about 2,400 people a month search Google for “what is a layover” (US, DataForSEO Labs, September 2026). This is the answer we would give a client, written to be booked from.
The short answer
- LayoverA connection of a few hours (under 24) between flights on the same ticket
- StopoverA stop of 24 hours or more, often allowed free or cheaply on the same ticket — a second destination
- Safe minimumsDomestic 60–90 minutes; international with a terminal change or customs 2–3 hours; self-transfer on separate tickets 4+ hours
Layover, stopover, connection
A layover (or connection) is a short stop — typically 45 minutes to a few hours, up to 24 — between flights on the same booking. A stopover is a stop of more than 24 hours (more than 4 hours on some domestic definitions) and is often a deliberate extra destination: Icelandair, Qatar, Turkish, Emirates, Singapore, TAP and Air Canada sell or allow stopovers in their hubs. A direct flight stops but keeps the same flight number; a nonstop does not stop.
Protected vs self-transfer
If both flights are on one ticket (one booking reference), the connection is protected: the airline chose the connection time, will rebook you if the first flight is late, and checks your bag through. If you bought two separate tickets — common with low-cost carriers and 'virtual interlining' sites — the connection is yours to make: a missed second flight is a no-show, you must collect and re-check bags, and you need far more time. Self-transfer needs four hours minimum; some airports (Milan Bergamo, Gatwick) sell connection services that help.
What happens in the airport
Domestic-to-domestic in the US: stay airside, walk to the next gate. International arriving in the US: you clear immigration and customs at your first US airport, collect and re-drop your bag, and re-clear security — allow 2–3 hours (Global Entry helps). Schengen: clear passport control at your first Schengen airport, then domestic-style connections within. Transit in Doha, Dubai, Singapore, Istanbul, Hong Kong: stay airside, no immigration, sometimes a transit security check. Terminal changes (Heathrow, JFK, Charles de Gaulle) can add 30–45 minutes and a bus or train.
Using a long layover
Six hours or more in the right city is a visit: Doha's Qatar Airways offers free transit tours and the Museum of Islamic Art is 20 minutes away; Singapore's Changi has the Jewel waterfall airside and free city tours; Istanbul's Touristanbul tours are free with Turkish; Amsterdam is 15 minutes to the Rijksmuseum by train; Reykjavik's Blue Lagoon is between the airport and the city; Toronto's downtown is 25 minutes by UP Express or a pre-booked chauffeur. Rule: airside-to-city-to-airside needs at least six hours, a visa where required, and a bag checked through. Lounges with showers and day-use hotel rooms (Yotel, Aerotel, Minute Suites) are the alternative for four to six hours.
Booking it
The engine's flights page shows connection times and whether an itinerary is a single ticket; prefer one booking reference over a cheaper self-transfer unless the layover is very long. For a stopover, search the hub as a multi-city itinerary. For a long layover in Toronto, New York, London or Paris, the chauffeur booker on this page handles the airport-to-city round trip with a fixed return time.
Three things to get right
- One ticket = protected connection; two tickets = your problem.
- Arriving in the US: customs at the first airport, so give it 2–3 hours.
- Six hours or more at Doha, Singapore, Istanbul or Amsterdam is a free city visit.
