Originally Posted by
SUPERTRAVEL
The last time I checked it is possible for a Basic passenger to pick and pay for a seat assignment 7 days prior to departure, without having to upgrade first to main cabin.
Now whether that is cheaper than upgrading to main cabin first and then picking a seat for free, I don't know.
But if upgrading to main cabin first, one could do that now and not have to wait for T-7 days.
Current fare differentials between BE and Main fares on DFW-SEA are $45. I suspect the seat selection fee on a BE fare will be less, but haven't actually checked. You can't pay for a Preferred seat on BE fares according to DL website, but it looks like the A220 does not have a significant number of Preferred seats and there are many non-Preferred aisle/window seats available.