How much layover time do you actually need?

Connecting itineraries are often cheaper than non-stop ones, and frequently worth taking. But the connection time shown on a results page is a number, not a promise — and the difference between a comfortable transfer and a sprint is usually decided before you book.

The airport sets a legal minimum, and it is a minimum

Every airport publishes a minimum connection time: the shortest gap it will sell you between two flights. Booking systems will not offer a connection below it.

Treat that number as the floor, not the target. It assumes both flights are on time, the gates are not at opposite ends of the airport and nothing goes wrong. It is what is possible, not what is comfortable.

What actually eats your connection time

The gap on your ticket is not walking time. Depending on the airport and itinerary, you may need to:

• change terminal, sometimes by train or bus
• clear immigration, if the connecting country requires it
• collect and re-check your bags, on some itineraries
• pass security again, including a queue
• re-clear a boarding pass check at the gate, which closes well before departure

Any one of these can consume more time than travellers expect.

One ticket or two? This is the important question

This distinction matters more than the number of minutes.

On a single ticket, the airline is responsible for getting you to your destination. Miss the connection because the first flight was late, and they rebook you. Your bags are usually checked through.

On two separate tickets, you have two unrelated contracts. If the first flight is late and you miss the second, that is your problem — the second airline is entitled to treat you as a no-show, and you may have to buy a new ticket. You will usually also have to collect your bags and check in again from scratch.

Separate tickets can save money, and plenty of people use them deliberately. Just do it knowingly, and leave a much larger gap than you would on a through ticket.

Practical guidance

As a rough starting point, and adjusting for the airport:

• Domestic to domestic, same terminal: the published minimum plus a margin
• International connection, same ticket: a couple of hours is comfortable
• Changing terminal or clearing immigration: more
• Separate tickets: treat it as two trips and leave several hours, or an overnight

When a longer layover is the better buy

A long connection is not always a cost. On a long-haul trip it can be a chance to sleep, eat properly or stretch, and it absorbs a delay on the first leg instead of turning it into a missed flight and a rebooking queue.

If the price difference is small, the longer connection is often the better ticket.

Before you book a connection, check

1. Is it one ticket or two?
2. Do you change terminal?
3. Do you clear immigration on the way through?
4. Do you re-check bags?
5. Is the first flight the last one of the day on that route? If it is, a delay leaves you no fallback.

Answer those five and you will know whether the connection is realistic. If you are unsure about a specific routing, ask us before booking.