Free tool
Will I make my connection?
Hub-specific minimum connection times, plus a buffer recommendation for delay tolerance. Tells you whether you're tight, standard, comfortable, or generous — and what you can realistically do with the time.
- IATA-grounded MCT data
- Free · no account
- Shareable result URL
- 35+ hub-specific airports
Frequently asked
What is minimum connection time?
Minimum connection time (MCT) is the published minimum the airport and airline allow between an arriving and departing flight on the same itinerary. It accounts for deplaning, walking, security re-clearance if required, and (where applicable) immigration and bag re-check. MCT is a planning floor — real-world buffer should always exceed it by 30+ minutes for delay tolerance.
Is X hours enough for a layover?
It depends on the airport, the connection type (domestic vs international), whether terminals change, and whether bags need to be re-checked. Use the calculator above with your specific airport — for example, 90 minutes is comfortable at AMS but tight at JFK with a terminal change.
Can I leave the airport during a layover?
Sometimes. You need: (1) at least 4–6 hours of buffer above the recommended MCT, (2) entry permission for the country (visa or visa-free), and (3) your bags either checked through to the final destination or claimed and re-checked. International transit halls without immigration clearance are a separate consideration. Check the country's specific transit/visa rules before exiting.
Do I need to re-check bags on a layover?
Usually no on a single ticket within the same airline alliance — bags are tagged through to your final destination. Exceptions: international-to-domestic transfers in the US, China, and Australia almost always require bag claim and re-check after immigration and customs. Also: separate tickets always require re-check.
What if I miss my connection?
If both flights are on a single ticket (same PNR), the airline is responsible for rebooking you on the next available flight at no charge. If they're separate tickets, you're on your own — the second airline considers you a no-show. This is the strongest argument for booking through-tickets even when separate tickets are cheaper.
Why is the international-to-domestic time so long?
Because it triggers immigration clearance, customs, bag claim, bag re-check, and (often) security re-screening before the domestic departure terminal. At a busy hub on a busy day, this chain easily takes 90+ minutes even when published MCT says less.
Where does the MCT data come from?
Hub-specific values are from published IATA / OAG MCT directories and the airports' own connection guides. Each entry includes a verification date. For airports we don't have hub data on, the calculator falls back to conservative industry defaults — and tells you it's doing so.
Can I save or share my result?
Yes. Every result has its own URL — your inputs are encoded in the query string. Bookmark it or send it to a travel partner. The page reloads with the same answer.