Originally Posted by
mirak
.... So... I booked a cheap $60 flight, also on Iberia, from MAD to VGO instead. Departs the same time as my original flight from MAD to OPO. I'm not checking a bag, so my plan is just to skip the MAD to OPO leg, take the MAD to VGO flight instead, and hopefully fly home 10 days later using the remainder of the original booking.....
Normal airline practise is that if you "no show" any segment the rest on the tickets/flights are auto cancelled.
Airlines often have software the checks for duplicate~impossible reservations. Then cancel 1.
They do not always advise the passenger what they have done.
As OPO & VGO are close I would fly as booked and get ground transport OPO to VGO, if that's where you want to go. Is 68 miles by air, say 100 miles by road.
A map from the Great Circle Mapper - Great Circle Mapper