An open-jaw flight is one where you fly into one city and home from a different one. New York to London, then Paris to New York — that's a destination open-jaw. You've created a gap between London and Paris that you travel on the ground (or by train, or however you like).
Most people have never heard the term, but they've often done something close to it without realizing it had a name. Once you understand how they're priced and when they work well, they become one of the more useful tools for structuring international trips.
The two types — and when each applies
A destination open-jaw: you fly into one city at the far end of your trip and home from a different one. Great for linear journeys through a region. Flying into Tokyo, traveling through Japan, then flying home from Osaka is a simple example.
An origin open-jaw: you depart from one city and return to a different one at your home end. Less common, but useful if you have two home bases or you're starting your trip from somewhere other than where you live.
A double open-jaw combines both — different cities on both ends of the trip. These are less common and require more careful fare construction, but they do exist and can occasionally produce surprisingly good results.
Why the price isn't usually that different
Airlines price open-jaw tickets using a half-round-trip calculation for each leg and then combine them. Because they're still filling seats in both directions across the Atlantic (or Pacific), they don't penalize open-jaw heavily.
In practice, the fare difference between an open-jaw and a standard round trip to either city is often small — sometimes a few hundred dollars, sometimes nearly nothing. Which means you're essentially paying a modest premium for the privilege of not having to backtrack.
The actual number depends heavily on the specific routes, carriers, and dates involved. It's worth running both options side by side before assuming one is better.
The clear win case
Open-jaw makes the most obvious sense when your trip has a natural linear direction. Flying into Europe from the US and wanting to travel west to east — land in Lisbon, end in Athens — means flying home from Athens saves you a positioning flight back to Lisbon. That's a half day of your life back and potentially a cheaper overall ticket.
It also makes sense when two different cities have better transatlantic connections in your preferred cabin. If business class availability is better into London and out of Frankfurt for your specific dates, a destination open-jaw might let you access both without compromise.
Where it gets complicated is when the ground transport between your two European cities is expensive or time-consuming. If you're flying into one city and home from another that's eight hours away by train, the cost and time of that ground leg needs to be part of the calculation.
Frequently Asked Questions
Our routing team structures complex international and multi-city itineraries every day — testing fare construction, alliance routings, and open-jaw combinations to find the cleanest, best-value journey.
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Sources & Further Reading
Authoritative references used to inform this guide.
