Originally Posted by
4allisons
I also had the problem that seat assignments were not available on the website. I was successfully reserved seats by sending an email to
[email protected]. They were very helpful and responded within the hour.
BTW, they explained that when you book a flight through another airline (in my case, United award miles) the assign seat function is not available on the website.
There was a period in 2017 where seat selection was not available on line for redemptions made through UA mileage plus, but that was later fixed. Other redemption partners (such as lifemiles) weren't affected.
I recently booked a TG ticket through UA and the seat selection on the TG website worked fine. You need the specific TG PNR or booking reference (for bookings made via United there's a link in UA's manage booking page with words something like 'other airline booking references')