How to Pick the Best Connecting Airport for Your Layover
Quick answer
A good connecting airport gives you comfortably more time than the airport's minimum connection time, keeps your flights on a single ticket so the airline protects your connection, and doesn't require a transit visa you don't already have. When two hubs are otherwise similar in price, favor the one with a simpler terminal transfer and a track record of fewer weather delays.
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Start with the minimum connection time
Every airport publishes a minimum connection time (MCT) — the shortest gap officially allowed between an arriving and departing flight for passengers and bags to transfer. Booking engines generally won't sell anything shorter, but the legal minimum and a comfortable minimum aren't the same thing. Add a buffer, especially for your first flight of a multi-leg trip where a delay has nowhere to absorb.
Same ticket vs separate tickets
Booking your full itinerary on one ticket (even across partner airlines) means the operating carriers are responsible for getting you to your final destination if an early flight runs late — they'll typically rebook you onto a later connection. Piecing together two separate, independently-booked tickets can be cheaper, but if you miss the second flight because the first was delayed, no one is obliged to help you rebook or cover the cost.
Compare candidate connecting airports
| Factor | Why it matters |
|---|---|
| Terminal layout | A single-terminal connection is far easier than one requiring a bus or train between terminals |
| Immigration/security re-clear | Some connections require re-clearing security or immigration, eating into your buffer |
| Weather exposure | Hubs prone to fog, snow, or storms carry more knock-on delay risk in season |
| Transit visa rules | Some nationalities need a visa just to change planes in certain countries |
Transit visas: check before you book
Whether you need a transit visa depends on your nationality, the country you're passing through, and whether your connection keeps you airside or requires leaving the secure zone. Rules differ enough between countries that a layover which is visa-free for one nationality can require a full visa for another. Confirm this on official government sources for the specific country before you commit to an itinerary.
How much time is enough?
For domestic-to-domestic connections, the published MCT plus a modest buffer is usually fine. For international connections — especially ones involving immigration or a terminal change — aim for 90 minutes to 2 hours above the minimum. That's enough to absorb a short delay or a longer walk without turning your layover into an overnight stay.
Practical tips
- If a metasearch shows two similarly priced itineraries with different connecting airports, check each hub's terminal map before deciding.
- Favor your outbound airline's own hub when possible — connections within one airline's network tend to be smoother and better protected.
- Once booked, track your inbound flight so you know as early as possible if your connection is at risk. Track any flight live on ScanFlyGo →
Frequently asked questions
What is a minimum connection time (MCT)?
It's the shortest amount of time an airport officially allows between an inbound and outbound flight for passengers and bags to transfer safely. Booking systems generally won't sell a connection shorter than the published MCT for that airport.
Is it safer to book connections on one ticket?
Generally yes. On a single ticket, the airline is responsible for rebooking you if an earlier flight is delayed and you miss the connection. On separate tickets, you typically bear that risk yourself.
Do I need a transit visa for my layover?
It depends on your nationality, the country you're transiting through, and whether you leave the airport or change terminals outside secure areas. Check the specific airport and country before booking.
How long should a layover be to feel comfortable?
For international connections, 90 minutes to 2 hours above the minimum connection time gives useful buffer without wasting your whole day at the airport.
The bottom line
The best connecting airport isn't always the cheapest one on paper — factor in ticketing type, terminal layout, and transit visa rules before you book. Compare routings on ScanFlyGo and check popular routes to see your connection options.
Some links on ScanFlyGo are affiliate links — we may earn a commission at no extra cost to you. Transit and visa requirements vary by nationality and country — always confirm on official sources before booking.