What is MCT (Minimum Connection Time)?
MCT is the shortest time allowed between connecting flights at an airport. Airlines and airports set these times based on terminal layouts, immigration procedures, and historical data. Booking a connection shorter than the MCT can result in "illegal connections" that airlines won't honor.
Why MCT Varies By Airport
Connection times differ dramatically depending on:
- Airport size: Small airports like Geneva (GVA) may have 40-minute MCTs, while mega-hubs like JFK require 90-120 minutes
- Terminal changes: Connecting between Terminal 5 and Terminal 3 at London Heathrow requires 90 minutes minimum
- International vs. Domestic: Clearing customs adds significant time
- Security procedures: Some airports require re-screening between terminals
Real-World MCT Examples
| Airport | Connection Type | MCT |
|---|---|---|
| Dubai (DXB) | International to International | 90 min |
| Madrid (MAD) | Same Terminal (T4) | 45 min |
| London Heathrow (LHR) | T5 to T3 | 90 min |
| Singapore (SIN) | International to International | 60 min |
| Frankfurt (FRA) | Schengen to Schengen | 45 min |
Pro Tips for Tight Connections
- Check your MCT: Use our MCT Checker tool before booking
- Book on one ticket: If airlines sell it as one ticket, they guarantee the connection
- Avoid first/last flights: No flexibility if you miss it
- Know your gates: Some airports are HUGE (looking at you, ATL and DXB)
- Fast Track: Premium cabin passengers often get priority lanes
What Happens If You Miss Your Connection?
If you booked on one ticket and the airline caused the delay, they MUST rebook you for free. If you booked separate tickets, you're on your own—insurance might help.
Never book connections shorter than the MCT. Travel agents risk ADM (Agency Debit Memo) penalties for violating these rules.
Use our professional tools: MCT Checker | Terminal Finder