What is MCT (Minimum Connecting Time)?

MCT stands for Minimum Connecting Time — the shortest interval between the scheduled arrival of one flight and the scheduled departure of a connecting flight that allows a passenger (and their checked baggage) to make the connection under normal conditions. MCT values are defined by IATA Recommended Practice 1670 and individually by each airport. They vary by connection type (domestic-to-domestic, international-to-international, etc.) and are built into airline booking systems to prevent the sale of itineraries that are too tight.

My airport is not in the database. What happens?

If your airport is not in our database, the calculator applies general industry-recommended minimum times derived from IATA guidance: 45 min (domestic-to-domestic), 60 min (domestic-to-international), 90 min (international-to-domestic), 90 min (international-to-international). These are conservative defaults — actual MCT may be shorter at efficient single-terminal airports or longer at large multi-terminal hubs. Always verify with your airline before booking.

Can I always make the connection if my layover exceeds the MCT?

Not necessarily. MCT represents the minimum under normal conditions — it does not account for long immigration queues, security screening delays, gate changes, aircraft arriving late, or extreme terminal distances. The MCT is the floor, not a guarantee. A "Comfortable" result (≥ 1.5× MCT) gives you a meaningful buffer, but real-world factors can still cause a miss. For important trips, choosing a layover significantly longer than the MCT is always the safer strategy.

Layover & Connection Time Calculator

Step 1 — Connecting Airport

Step 2 — Connection Type

Step 3 — Available Layover Time

Hours

Minutes

= 90 min total

About This Tool

Check whether your layover is long enough based on the official Minimum Connecting Time (MCT) for your airport and connection type. Covers 22 major hubs — plus general industry defaults for all other airports. Reference only; always confirm with your airline.

The MCT data in this tool is a static reference table derived from IATA Recommended Practice 1670 and per-airport official sources. This is not a live data feed — MCT values can change without notice, so always verify with your airline or the airport before booking a tight connection.

How To Use

Enter your connecting airport — Search by IATA code (e.g., ICN) or airport name. For airports not in the database, type the 3-letter IATA code and the tool will apply IATA general defaults.
Select the connection type — Choose whether your arriving and departing flights are domestic or international. This is judged from the perspective of the connecting airport.
Enter your available layover time — Input the time between your scheduled arrival and scheduled departure.
Review the verdict — The tool shows one of three results — Comfortable, Tight, or Below Minimum — alongside the recommended MCT for that airport and connection type.

Example Scenarios

Case 1: Connecting at Seoul Incheon (ICN), International → International, 2-hour layover

ICN's MCT for international-to-international connections is 90 minutes. A 2-hour (120 min) layover meets the minimum but falls short of the 1.5× comfortable threshold (135 min), so the verdict is Tight. Consider aiming for at least 2h 15min to allow for baggage delays or gate changes.

Case 2: Connecting at Amsterdam Schiphol (AMS), International → International, 45-minute layover

AMS has a single-terminal layout with an MCT of 40 minutes. A 45-minute layover meets the minimum but is below the comfortable threshold (60 min), yielding a Tight verdict. Note that Schengen/non-Schengen zone changes at AMS may add extra time not reflected in the MCT.

Frequently Asked Questions

What is MCT (Minimum Connecting Time)?: MCT stands for Minimum Connecting Time — the shortest interval between the scheduled arrival of one flight and the scheduled departure of a connecting flight that allows a passenger (and their checked baggage) to make the connection under normal conditions. MCT values are defined by IATA Recommended Practice 1670 and individually by each airport. They vary by connection type (domestic-to-domestic, international-to-international, etc.) and are built into airline booking systems to prevent the sale of itineraries that are too tight.
My airport is not in the database. What happens?: If your airport is not in our database, the calculator applies general industry-recommended minimum times derived from IATA guidance: 45 min (domestic-to-domestic), 60 min (domestic-to-international), 90 min (international-to-domestic), 90 min (international-to-international). These are conservative defaults — actual MCT may be shorter at efficient single-terminal airports or longer at large multi-terminal hubs. Always verify with your airline before booking.
Can I always make the connection if my layover exceeds the MCT?: Not necessarily. MCT represents the minimum under normal conditions — it does not account for long immigration queues, security screening delays, gate changes, aircraft arriving late, or extreme terminal distances. The MCT is the floor, not a guarantee. A "Comfortable" result (≥ 1.5× MCT) gives you a meaningful buffer, but real-world factors can still cause a miss. For important trips, choosing a layover significantly longer than the MCT is always the safer strategy.

This tool is provided for informational purposes only. Results are estimates and should not be relied upon as professional advice.

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