Flight Delays9 min readUpdated 25 May 2026ByMarta Halvorsen

Protecting a Connection When the First Leg Is Late

Three actions in the air and on the ground that keep your itinerary alive.

Recently updated
A traveler walking quickly through a connecting corridor at a large airport hub with a departure screen ahead

Editorial record

Recently updated
Originally published
13 October 2024
Last updated
25 May 2026
Last reviewed
13 July 2026
Reading time
9 minutes
Category
Flight Delays
Written by
Marta Halvorsen
Reviewed by
Tom Delacroix

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Quick answer

On a single ticket, ask crew to flag your connection; on separate tickets, contact the second airline yourself.

Three solutions

  1. 1

    Ask cabin crew to notify the ground team about tight connections.

  2. 2

    Pre-select a backup flight so you can request it by number.

  3. 3

    Move to the front of the cabin if crew allow it on arrival.

Your first flight is late and the connection is tight. There is usually a window of about forty minutes, while you are still in the air or still at the first gate, when the outcome can be changed. After that you are queueing with everyone else.

What you can do depends heavily on one thing: whether the whole journey is on a single ticket, or two separate bookings that happen to be on the same day.

This guide covers what to do while the first flight is still running late, how airlines decide who gets protected, and what changes when the tickets are separate.

Single ticket or separate tickets

On a single ticket, the airline owns the whole journey. If you miss the connection because the first leg was late, they must rebook you to your final destination at no cost, and provide care if the wait is long.

On separate tickets, each booking is a standalone contract. The second airline has no obligation at all, and a missed connection is treated as a no-show.

Single ticketSeparate tickets
Rebooking if you miss itFree, airline's dutyAt your own cost
Baggage transferredUsually yesNo, collect and recheck
Care during the waitYesNo
Compensation possibleYes, based on final arrivalOnly for the delayed leg itself

Check the ticket numbers

One ticket number covering all segments means one contract. Two separate thirteen digit numbers mean two contracts, whatever the booking site called it.

What to do before you land

The most useful forty minutes of a tight connection happen before the aircraft door opens. Cabin wifi, even the slow free messaging tier, is usually enough.

  1. Check the live status of your onward flight and its gate
  2. Open the airline app and see whether it has already protected you on a later flight
  3. If not, use the app's self-service rebooking to hold a seat on the next departure
  4. Tell the cabin crew you have a tight connection; they can sometimes arrange for you to leave first
  5. Note two backup flight numbers so you can request them by name if the app fails

Automatic protection happens quietly

Many carriers rebook at-risk passengers automatically while the inbound is still airborne. Check the app before you queue, because the new boarding pass may already be there.

A passenger checking a phone showing flight connection details while seated on an aircraft near the window
The rebooking window opens while you are still in the air.

On the ground with minutes to spare

If the connection is still technically possible, go for it, but decide quickly and take the fastest route. At large hubs the difference between the signposted route and the fastest route can be ten minutes.

  • Confirm the gate on a screen rather than relying on the boarding pass, since gates change
  • Ask staff at the arrival gate whether there is a transfer shortcut or a staff-assisted lane
  • Skip any duty free detour, including water, until you are past the gate
  • If the gate is in a different terminal, check whether the transfer is airside or requires re-screening
  • If you will not make it, stop and rebook rather than arriving after the gate closes

Frankfurt, twenty-eight minutes

A Lufthansa passenger landed at Frankfurt with 28 minutes to a Concourse Z departure. The arrival gate agent directed her to a transfer lift most passengers walk past, saving roughly eight minutes on the standard route. She boarded with four minutes to spare, though her bag arrived the next day.

That last detail matters. Making the connection yourself does not guarantee the bag makes it, and on a single ticket the airline will deliver it to your address once it catches up.

Why the airline thinks your connection is legal

Every airport publishes a minimum connecting time for each combination of terminals and flight types. If your itinerary meets it, the booking system considers the connection valid, even when it is uncomfortably tight in practice.

HubDomestic to internationalInternational to international
London Heathrow60 minutes75 to 90 minutes
Frankfurt45 minutes45 to 60 minutes
Amsterdam Schiphol40 minutes50 minutes
Paris Charles de Gaulle60 minutes60 to 90 minutes
Dubai75 minutes75 minutes
Atlanta40 minutes60 minutes

Legal is not the same as comfortable

Minimum connecting times assume an on-time arrival, no gate change and no passport queue. On a booking you actually care about, add at least 30 minutes on top.

If your tickets are separate

You are on your own contractually, but you are not out of options. The second airline will usually sell you a seat on a later flight, and some have an informal same-day policy that is cheaper than a new ticket.

  • Call the second airline as soon as you know, before the departure time, to avoid a no-show
  • Ask specifically about a same-day change fee rather than buying a fresh ticket
  • Check whether your travel insurance covers missed connections on separate tickets, since many policies do
  • Claim any delay compensation from the first airline for the delayed leg itself

Call before departure

A no-show is far more expensive than a change. Even five minutes before the scheduled departure, a phone call can keep the ticket alive.

A departure board at an airport transfer area with passengers checking onward flight information
On separate tickets, calling before scheduled departure is the difference between a change and a no-show.

Common mistakes

  • Waiting until landing to start looking at options
  • Assuming a booking site selling both flights together makes it one ticket
  • Running for a gate that has already closed instead of rebooking
  • Not telling the second airline anything on a separate-ticket itinerary
  • Leaving the transfer desk without written confirmation of the new booking

Frequently asked questions

Will the airline rebook me automatically if I miss a connection?
On a single ticket, usually yes, and often before you even land. Check the app for a new boarding pass before joining any queue.
What if my connection is on a separate ticket?
The second airline has no obligation. Call them before the scheduled departure to convert the booking into a change rather than a no-show.
How much connection time is actually safe?
Add at least 30 minutes to the airport's published minimum connecting time, and more if you change terminals, clear immigration, or travel in winter.
Should I run for a tight connection?
Only if the gate is still open and the route is clear. If the gate has closed, running there wastes the time you need for rebooking.
Will my checked bag make a tight connection?
Sometimes not, even if you do. On a single ticket the airline will trace and deliver it; keep essentials and medication in your cabin bag.
Can I claim compensation for a missed connection?
On a single ticket, compensation is assessed against your arrival time at the final destination, so a long delay caused by a missed connection can qualify.

Summary

Whether you are protected depends almost entirely on single ticket versus separate tickets. Check the ticket numbers before you travel, not during the disruption.

The useful window is while you are still in the air. Check the onward flight, look for an automatic rebooking, and hold a backup seat in the app.

On the ground, decide fast: either take the fastest route to the gate, or stop and rebook. Do not do half of each.

On separate tickets, call the second airline before the scheduled departure. A change costs money; a no-show costs the whole ticket.

Sources and references

This guide was written and checked against the following categories of primary source.

  • Air passenger rights regulators

    Delay, cancellation and denied-boarding thresholds and duty of care obligations.

  • Official airline disruption policies

    Carrier commitments on rebooking, meals and overnight accommodation.

  • Airport authority guidance

    Operational status, disruption handling and passenger facilities during irregular operations.

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