Choosing your seat: which upcharges are worth it
· Vol Spot

Seat selection is a paid extra almost everywhere now, from a few dollars on a short hop to serious money on a transatlantic flight. On some fares, not paying means being seated at random, split up from the people you are travelling with.
Not all of these upcharges are equal. Here is which ones genuinely change the trip, and which mostly sell peace of mind.
Window or aisle, the real question
On an overnight flight to Europe the window wins: you get a wall to lean against and nobody wakes you to get out. On a nine-hour daytime flight westbound the aisle wins, because you will get up more often than you expect.
The middle seat is the only one almost always worth avoiding, and it is precisely the one automatic assignment gives you when you do not pay.
Two people on a row of three: booking the window and the aisle leaves the middle empty longer, because it is the last seat assigned. If the aircraft is not full you gain the row. If it is, the middle passenger will happily swap.
Front and back do different jobs
Up front you get off faster, which genuinely matters with a tight connection. That is the main argument for paying for a forward seat, and on a transit under 90 minutes it can save the flight.
At the back the aircraft is often less full, which raises the odds of a free row. It is also louder near the engines and closer to the toilets, with the foot traffic that implies.
The middle of the cabin, over the wings, is the steadiest part in turbulence. If flying makes you anxious, that is the most useful upcharge on the list.
Exit rows and bulkheads
Exit rows offer a lot of legroom, and they are priced accordingly. You must be able to assist the crew, which rules out children and requires understanding the briefing. Some of those seats do not recline.
Bulkhead rows also give space, but nothing stows at your feet for takeoff and landing. It is also where bassinets attach, so expect babies nearby on a long-haul.
- Pay, yes : Flights over six hours, if you are tall, or a tight connection on arrival. Space and exit time convert directly into comfort.
- Pay, probably not : Flights under three hours where the aircraft empties in ten minutes anyway. Checking in online the moment it opens often gets you a decent seat for free.
The upcharge is part of the ticket price
This is the point to hold on to when comparing two fares. A ticket $60 cheaper that charges $45 per person each way for a seat is not cheaper at all, and that gap appears nowhere in the displayed price.
Before comparing, decide whether you need seats together. With young children it is not optional, and several carriers seat an adult with a child at no charge as a matter of policy. Check rather than assume.
Once you have the real total on both sides, the comparison becomes honest. It is the same habit as with baggage: the advertised price is only a starting point.