Originally Posted by
Claranda
I’ve used a companion voucher to book seats from Doha to London in March 2026. The voucher is valid to June 2026. Am I right in thinking that I can use the remaining ‘half’ of the voucher to book a flight from London to somewhere, but must book it before we fly Doha/London in March and for a flight that happens before the voucher validity runs out?
What restrictions are there on how far I can fly from London? Am I limited to Doha or just limited to the same mileage? Many thanks!
It's worth having a look at the Wiki at the top of this topic (you may need to expand it) as a lot of your questions are answered there. But in summary
Yes, you can phone up and add a "return" flight later.
Yes, this must be booked before you fly your first flight, once that happens you can't add another.
A return leg doesn't need to be flown before the voucher expires, so you could fly later than June 2026. But it must be
booked before the voucher expires - in your case you have a more restrictive condition anyway, that it will need to be booked before your first flight in March 2026.
The more usual open jaw construction is to start in London and
return from somewhere else, e.g. LHR-SFO, LAX-LHR or suchlike. I'm not 100% sure on this, but I believe the same restrictions will apply to a DOH-LHR-XXX, namely that the open jaw distance, which in your case would be DOH-XXX must be less than
both the distances flown, i.e. DOH-LHR and LHR-XXX.
So without looking at a map, something like DOH-LHR-SFO would
not be permitted because DOH-SFO is a much greater distance than either DOH-LHR or LHR-SFO (in this case it's greater than both, but being greater than either leg is enough)
Whereas, e.g. DOH-LHR-AMM should be fine as the DOH-AMM distance is less than both legs.