We got some very unfortunate health news on my wife, so we're throwing together a couple of last minute trips. One of them is to Copenhagen.

We booked Tues-Sun (ORD-LHR-CPH Round Trip) b/c Tues-Sat was like 4 times the price for First (for reasons I will never understand).

However, we have no plans in Copenhagen for Saturday and would rather spend that day in London. So, we'd like to change the CPH-LHR leg from Sunday morning to Saturday morning and essentially have a 24-hour long layover.

Tickets are First Select Pro (which should be pretty flexible) if that matters.

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--Matt