Booking two cheaper flights separately can save real money. What you give up is the airline's responsibility for getting you to your final destination, and that only matters when something goes wrong, which is exactly when you need it.
What "one ticket" means
A single ticket covers your whole journey under one booking, even if a partner airline operates one of the flights. The airline that sold it is responsible for the whole trip. Typically:
- If a delay makes you miss your connection, the airline rebooks you on a later flight at no extra charge.
- Your checked bags are tagged through to your final destination.
- You cannot be sold a connection shorter than the airport's minimum connection time.
- If the trip is cancelled or significantly changed and you choose not to travel, the refund rules apply to the whole ticket.
What changes with separate tickets
With two tickets, each airline is only responsible for its own flight. The first airline has no obligation to get you onto the second one.
- A missed connection is your problem. If you arrive too late, the second airline can treat you as a no-show. You may have to buy a new ticket at the walk-up price.
- A no-show can cancel the rest of that booking. On many airlines, missing one flight cancels the remaining flights on the same reservation, which can include your return.
- Bags are not checked through. You usually have to collect them, check in again with the second airline and go back through security.
- Refunds are separate. If the first flight is cancelled you can get that ticket refunded, but the second ticket follows its own fare rules.
How to tell which you have
- One confirmation code for the whole trip usually means one ticket.
- Two confirmation codes, or two separate payments, usually means separate tickets.
- Booking sites sometimes label separate tickets as "self-transfer" or say that you are responsible for making the connection. Read the small print before you pay.
If you do book separately
- Leave a long gap: several hours, or an overnight stop if missing the second flight would be expensive. Our layover guide explains why the usual starting points do not apply.
- Travel with carry-on only if you can, so you are not waiting at baggage claim.
- Avoid booking the last flight of the day as the second leg. See the best time of day to fly.
- Check whether the second ticket can be changed, and at what cost, before you book it.
- Check whether your travel insurance or credit card covers missed connections. Some policies do.
- Watch the first flight closely on the day. The sooner you know it is late, the sooner you can contact the second airline about moving to a later flight.
When it is worth it
Separate tickets can make sense when the saving is large, the gap between flights is generous and a missed connection would be an inconvenience rather than a disaster. For a trip with a fixed deadline, the protection of one ticket is usually worth paying for.
If it does go wrong, see missed connection on separate tickets, and for single tickets, what happens if you miss a connecting flight.
This guide is general information for US travelers, not legal advice. Rules and airline commitments change; check with your airline or the US Department of Transportation for your specific situation.