Skip to content

Connections & Layovers

Choosing Better Layovers

A connection is a bet on two flights and one airport. Some bets are much better priced than others.

Winding river valley seen from an elevated viewpoint

Elena Vasquez · April 13, 2026 · 8 min read

Search engines sort by price and total duration. Neither of those numbers tells you whether the connection will work. A 55 minute transfer at a compact airport with one terminal is safer than three hours at an airport where you change terminals, clear immigration and recheck a bag.

What makes a connection risky

  • Terminal changes, especially where landside transit is required.
  • Immigration on the way through, which applies at every first point of entry into the United States and at several other airports.
  • Baggage recheck, which turns a transfer into a mini arrival and departure.
  • Separate tickets, which remove all protection regardless of how much time you leave.
  • The last flight of the day onward, since a missed connection becomes an overnight rather than a two hour wait.
  • Weather exposed hubs in the wrong season, where the entire day can cascade.
Connection typePublished minimumWhat to actually plan
Same terminal, same airline, domestic30 to 40 minutes60 minutes
Same terminal, international to international45 to 60 minutes90 minutes
Terminal change, single ticket60 to 90 minutes2 hours
Entering the United States and connecting90 minutes2 hours 30
Separate tickets, no bagsNot protected3 hours
Separate tickets, checked bagsNot protected4 hours or overnight
How much time to allow, in practice

Airports that forgive, and airports that do not

Some hubs are genuinely easy. Amsterdam Schiphol has one terminal and a compact layout. Singapore Changi, Doha, Helsinki, Zurich and Munich are all straightforward. Copenhagen and Vienna are small enough that an hour is comfortable.

Others need real time. London Heathrow's terminal transfers can take 45 minutes on their own. Paris Charles de Gaulle's terminal 2 is a sprawling complex where the walk between subterminals is substantial. Newark, Los Angeles and Toronto Pearson all involve significant distances, and Toronto adds US preclearance for onward American flights, which is excellent on arrival and slow on departure.

Long bridge crossing calm water at sunrise
Compact hubs beat large ones for connection reliability, even when the large hub is better in every other respect.

The single ticket rule

If everything is on one ticket, the airline owns the connection. A delay on the first sector obliges them to rebook you, feed you, and accommodate you overnight where the rules require it. If the flights are on separate tickets, a missed connection is entirely your problem and your cost.

This is worth real money. A single ticket that costs 80 euros more than two separate ones is usually the better buy, because the downside on the separate tickets is the full price of a replacement flight plus a hotel.

  1. 01

    Check the ticket count, not the booking count

    One booking reference can still contain two tickets. Look for a single ticket number covering all sectors.

  2. 02

    Check who operates each sector

    Mixed operators are fine on one ticket, and problematic on two.

  3. 03

    Check whether bags are through checked

    The airline will tell you at check in. If they cannot tag through to the final destination, treat the connection as separate.

  4. 04

    Look at the onward frequency

    If there are five later flights, a missed connection is an inconvenience. If there is one a day, it is a lost day.

  5. 05

    Check the aircraft's inbound rotation if the margin is thin

    Flight tracking sites show where your aircraft is coming from. A late inbound is the most reliable predictor of a late departure.

Making a long layover useful

  • Six hours or more is enough to leave the airport at many hubs, provided the entry rules allow it and the ground transport is quick.
  • Cities that work well for this include Singapore, Doha, Amsterdam, Reykjavik, Lisbon and Seoul, all with fast rail or metro links.
  • Airport lounges can usually be bought by the hour without status, and are cheaper than a day room.
  • Several large airports have airside hotels or sleeping pods, which avoid the immigration question entirely.
  • Left luggage exists at most major airports if you want to explore without a cabin bag.
Tropical island with turquoise water seen from above
A deliberate long layover turns dead time into a second destination. Reykjavik and Singapore are the two easiest places to try it.

Traveler notes

  1. Book the earliest reasonable departure. It gives you the rest of the day as a buffer.
  2. Avoid connecting through a hub that is having a bad week. Airline operational problems are widely reported and worth two minutes of searching.
  3. If you must take a tight connection, sit near the front and travel with cabin baggage only.
  4. Download the airline app and enable notifications. Gate changes reach the app before the departure boards update.
  5. Know your onward options before you land. Arriving at the transfer desk already knowing which flight you want puts you ahead of everyone in the queue.

Frequently asked

Will the airline hold the connecting flight for me?

Occasionally, when a large group is connecting and the delay is short. Never assume it. Airlines weigh the cost of the delay against the cost of rebooking a handful of passengers.

What if I booked separate tickets and miss the second flight?

You are a no show on that ticket and it is normally forfeited. Contact the second airline before the departure time, since a few will treat it as a paid change rather than a total loss.

Is a longer layover always safer?

Up to a point. Beyond about four hours you are mainly adding fatigue rather than protection, unless the extra time buys you a later flight option.

Do I need a visa for a layover?

Airside transit is visa free in most places for most nationalities, with notable exceptions including the United States, Canada and the United Kingdom, which require transit permission for many passport holders. Check before booking.