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Interesting Residual Ticket Value Scenario

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Old Oct 24, 2025 | 4:47 pm
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Interesting Residual Ticket Value Scenario

(Mods: Feel free to move this if there’s a good thread it should belong in)

Ran into an interesting residual value calculation on United’s website.

Went to go change the return leg of an in-process itinerary from EDI-ORD to LHR-ORD and pull up the date a few weeks (my son is able to come home from Uni earlier).

When united.com went to calculate the fare differential, it used the *entire* ticket value and not just the return leg.

Feels like this is an error in my favor and am curious if this is common or I just lucked out.
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Old Oct 24, 2025 | 6:19 pm
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Originally Posted by rflor
When united.com went to calculate the fare differential, it used the *entire* ticket value and not just the return leg.

Feels like this is an error in my favor and am curious if this is common or I just lucked out.
It’s not an error at all. It’s just not computing the price the way you’re suggesting.

In most cases, when changing the return leg of an itinerary, the entire ticket is repriced as if you’d bought it that way originally. Thus, you’re effectively exchanging a partially-used ticket that cost $X for a partially-used ticket that would have cost $Y; it’ll show you ($Y-$X) as the “fare difference” and it will tell you that it’s applying $X toward the total ticket purchase.

It’s a bit confusing, but it works out in the end.
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Old Oct 25, 2025 | 9:09 am
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Originally Posted by jsloan
It’s not an error at all. It’s just not computing the price the way you’re suggesting.

In most cases, when changing the return leg of an itinerary, the entire ticket is repriced as if you’d bought it that way originally. Thus, you’re effectively exchanging a partially-used ticket that cost $X for a partially-used ticket that would have cost $Y; it’ll show you ($Y-$X) as the “fare difference” and it will tell you that it’s applying $X toward the total ticket purchase.

It’s a bit confusing, but it works out in the end.
Wow. That is very….not inituitive! Thanks for that explanation.
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Old Oct 25, 2025 | 9:13 am
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Originally Posted by rflor
Wow. That is very….not intuitive! Thanks for that explanation.
why? You purchased a round-trip fare and it will re-calculate it as a new round-trip fare
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Old Oct 25, 2025 | 9:27 am
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Originally Posted by cfischer
why? You purchased a round-trip fare and it will re-calculate it as a new round-trip fare
I agree. It's the intuitively obvious way as far as I can see it.
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Old Oct 25, 2025 | 2:10 pm
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Originally Posted by cfischer
why? You purchased a round-trip fare and it will re-calculate it as a new round-trip fare
If the trip is halfway complete (which it is in this case), I’d expect the schedule change to calculate against the residual value, not the whole trip.

Maybe I am being too logical, but that first leg is done and therefore that fare component is spent.
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Old Oct 25, 2025 | 4:41 pm
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Originally Posted by rflor
If the trip is halfway complete (which it is in this case), I’d expect the schedule change to calculate against the residual value, not the whole trip.
If you'd rather pay on a one-way basis, I'm sure United would love to pocket the extra money!
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Old Oct 25, 2025 | 9:55 pm
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Originally Posted by mahasamatman
If you'd rather pay on a one-way basis, I'm sure United would love to pocket the extra money!
That’s why I was surprised at the methodology. I was expecting a much less flier friendly calculation.

At any rate, I will take it and learned something new!
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Old Oct 26, 2025 | 1:35 am
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Originally Posted by rflor
If the trip is halfway complete (which it is in this case), I’d expect the schedule change to calculate against the residual value, not the whole trip.
The only way that things could work the way that you’re suggesting is if all fares were one-way and thus didn’t really have any relationship to one another. Most UA international fares are round-trip.

Note that it’s actually possible for a voluntary change to result in a higher fare for the flight you already flew. For example, if you book a RT fare with a 7-day minimum stay, and then you change your return flight to be after only three days, the fare difference is going to be computed by throwing out the fare you already booked and looking for one without the minimum stay requirement.
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