Open jaw or round trip?
Type the two fares and what it costs to get back by ground. The tool compares the totals, shows the break-even fare and tells you what the answer depends on.
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The two tickets
Get both prices from the same search, same dates, same cabin. Amounts in US dollars, per person.
Getting back by ground (round-trip plan)
If you fly round trip you must return to city A. Look up the train, bus or drive and type what you find.
Extra costs (optional)
Result
Not enough information yet. Still needed: round-trip fare, open-jaw fare, cost to get back by ground.
You type every price and time; the tool looks nothing up. Your answers stay on this device. Self-transfer risk check