Originally Posted by
MSPeconomist
If people really need to sit together, such as a very small child or a handicapped person who needs help during the flight, the GA or even FAs might help, but you can't expect a lot of assistance or sympathy when two adults just prefer to sit next to each other.
Look at seat maps before purchasing tickets and then pay the fee to reserve two seats next to each other on all flights.
I know it isn't a necessity, but it would make the flight a lot better if it was possible. I guess I'm mainly wondering if the FA/flight staff would prevent it from happening if I were to find a willing passenger to switch for whatever reason.
I don't think it will be that unlikely to find a passenger on the Boston to London flight willing to switch, as I have done the flight many times and have been happy to swap with someone who asked politely.