Join Date: Jul 2005
Location: London, ARN, HEL, ..... or MAN
Programs: BA GGL / GFL, Mucci Diamond!, HH Diamond, Radisson Premium, IHG Gold, Hertz Gold
Posts: 5,893
Unfortunately I think it's all a bit more nuanced than the fare classes would have us believe.
I was making a booking for 5 recently - with only 4 available in the lowest fare bucket.
I tried lots of options as I didn't really want to have 2 PNRs but I also didn't want to pay the higher fare bucket for all 5 passengers, which was what ba.com priced up by default.
Then ba.com priced up a mid-point fare for all 5 together - slightly higher than the lower fare but lower than its original offer. Don't know why but I happily jumped on it!