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I have a roundtrip ticket from the US > Japan > US with ANA. Their "flex special" fare allows flight changes for free + any fare difference.

My question is, how will the fare difference be calculated if I have already flown the first leg from the US to Japan? Will it be compared to a "historical" round-trip price with the new return date, or to a one-way ticket from Japan > US?

I'm concerned about this because the roundtrip ticket was about $1700, but a one-way ticket with ANA from Japan > US costs about $5000 (which is absurd, but that's another topic).

bloomingpear
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1 Answers1

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Fare difference calculations generally work by comparing fare classes. If you have (say) a class Q fare, and there's a free Q seat that matches your existing fare conditions (minimum stay etc), there's no fare difference. If all the Qs are gone but there's a K seat, you're charged the difference between the Q seat you paid for and the K seat you're "upgrading" into. These prices are on a per-segment (flight) basis for a return trip, so the crazy one-way prices you're seeing for a brand new ticket (which are likely full fare/Y fares) are irrelevant.

lambshaanxy
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