Anonymous wrote:I agree that you should try to reassign your seats when you check in, but you can also try talking to the gate agent when you arrive. If none of those things work, I'm certain that someone will switch with you.
Don't count on people switching with you. If you read articles about traveling with kids, you will see that the number one complaint of the other passengers is the attitude of parents who "expect" to have people accommodate their seat needs at the last minute. People don't want to change seats - they have chosen their seats in advance, perhaps paid extra for them, have preference for window or aisle, etc. You will seriously steam off other people on the plane if you have to ask them to change seats.
That said, when I have flown and not been able to book seats together at the time of book, I immediately call the airline and request seats together (I don't call the website I booked through, or the airline I booked through - to the extent it is a codeshare. You have to call the operating airline directly). I offer to pay extra at that time for priority seats to get them together. And in the couple cases where they couldn't do anything on the phone, they said not to worry and that I should just raise the issue when I check in, and that it was their airline's policy that kids couldn't fly separate from their parents. In those cases, I still called within 24 hours to see if there was anything they could do so as to not leave it last minute (they couldn't) and ultimately they put us together when I checked in.
You should be prepared to have your seats in two chunks (that is, if both parents are flying, one parent sits with one twin and the other with the other).