Connecting flights are two or more flights sold as one journey, and whether they work for you comes down to a single question: does the airline protect the connection if the first flight is late? Everything else — the minimum connection time, whether your bag is checked through, whether you must clear security again — follows from how the ticket was sold.
Two ways to book a connection
- One ticket, one contract. The airline or alliance sells the whole journey. If a delay makes you miss the next flight, the carrier has to rebook you on the next service with space, and usually arrange overnight accommodation if you are stuck.
- Two separate tickets. You buy each leg yourself, often from different airlines. This is a self-transfer. It is frequently cheaper, but the risk sits entirely with you.
The price gap is the whole point of the self-transfer market. Low-cost carriers such as Ryanair, easyJet and Wizz Air sell point-to-point seats. They will not check your bag through to another airline, and they will not take responsibility for a missed onward flight.
Minimum connection times
Every airline and airport publishes a minimum connection time — the shortest gap the airline believes is workable between an arriving and a departing flight. It is built into the booking system: if a connection is too tight, the system will not sell it as one ticket.
What shapes it:
- The size of the airport. A small regional airport can be crossed in minutes; a hub such as Amsterdam Schiphol, Frankfurt or Madrid-Barajas can take far longer, especially when you change terminals.
- Whether you stay airside or must clear immigration and security again.
- Whether the connection is domestic, inside the Schengen area, or involves a non-Schengen arrival.
- The time of day. Early morning banks of departures move faster than the peak.
The published minimum is exactly that — a minimum, not a comfortable target. It assumes everything runs on time. When you build a protected connection yourself, choose a longer layover than the minimum, particularly at a large hub or when the second flight is the last one of the day.
Baggage: checked through or re-checked
On a single ticket your checked bag is normally tagged to the final destination. You hand it over at the first airport and collect it at the end. Valuables, documents and medication stay with you in the cabin.
On separate tickets it works differently:
- The first airline has no reason to tag your bag beyond its own destination, so you collect it and check it in again.
- That means leaving the secure area, walking to the departures hall, and going through check-in and security a second time.
- You need enough time for all of it, and the check-in desk for the second flight closes well before departure.
If you travel with hand baggage only, a self-transfer is simpler, but you may still have to exit and re-enter security, and some airports do not allow airside transit between terminals. Worth knowing too: even on one ticket, some countries require you to collect your bag and re-check it when you first enter the country. The airline will tell you at check-in.
Protected connections: what you get
When the whole journey sits on one ticket, the airline is responsible for getting you to your destination. If your first flight is delayed and you miss the connection, the carrier must put you on the next flight with space — on its own network or a partner’s — at no extra cost. If that means an overnight, accommodation and meals are usually provided, depending on the length of the delay and the rules that apply.
EU passenger rights cover flights departing from an EU airport, and flights arriving in the EU on an EU carrier. Where a delay or cancellation is the airline’s fault, you may be entitled to compensation, and a missed connection on a single ticket counts. None of this applies to a self-transfer: the second airline sees you as a no-show, your ticket is worthless, and you buy a replacement at the walk-up fare.
Making a self-transfer safer
Self-transfers can work well, especially on busy routes with frequent departures. Treat them as two separate journeys and plan accordingly.
- Leave a long gap. Several hours, not one.
- Fly the long leg first if you can — a missed short hop is easier to replace.
- Check that both flights use the same airport, not just the same city. Airports serving one city can be far apart.
- Check terminal and visa requirements. Some countries require a transit visa even if you never leave the airport.
- Travel with hand baggage only if possible.
- Buy travel insurance that covers missed connections, and read what it actually covers.
- Have a plan B: know the later departures and whether seats are usually available.
A quick checklist before you book
- Is it one ticket or two?
- What is the airline’s minimum connection time, and how much longer is your layover?
- Is your bag checked through?
- Do you need to clear immigration or security again?
- Is this the last flight of the day?
- If the connection fails, who pays?
Answer those and a connection stops being a gamble. Book the protected version when the price gap is small; take the self-transfer when you have time, hand baggage and a backup plan.