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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Do I need to book two plane seats?!

135 replies

allthelonelyppl · 05/08/2026 16:57

I’m flying for the first time this summer. I’m a UK size 18. I’ve just had the horrible thought that I might have needed to buy two seats?! Do I?! Flying easyJet and Ryanair.

If I do, do I just ring them and ask?!

OP posts:
Bryonyberries · 05/08/2026 17:48

I flew at size 20 a few years ago and didn’t need two seats or an extender. Arm rests do lift up if you happen to have a free seat next to you to make things comfy.

Plane travel isn’t the most comfortable in economy but the bright side is you’re usually going/returning from somewhere far from home. I always try to remind myself how amazing it is that we can go so far so fast today.

icingonmycupcake · 05/08/2026 17:49

allthelonelyppl · 05/08/2026 16:57

I’m flying for the first time this summer. I’m a UK size 18. I’ve just had the horrible thought that I might have needed to buy two seats?! Do I?! Flying easyJet and Ryanair.

If I do, do I just ring them and ask?!

No. Enjoy your holiday. 🌸

Howyoudoings · 05/08/2026 17:51

I think you will be fine if you are sitting next to a friend or family

youalright · 05/08/2026 17:53

Aren't seats in cars and other public transport very similar size to a plane seat so if you can fit in a car, train, bus then your good

HollyMcDolly · 05/08/2026 17:53

Only if you think you’ll need an extra seat obviously, are you that big you might encroach on a normal persons space?

youalright · 05/08/2026 17:54

HollyMcDolly · 05/08/2026 17:53

Only if you think you’ll need an extra seat obviously, are you that big you might encroach on a normal persons space?

She is a normal person

Onefairfish · 05/08/2026 17:54

I used to be a size 22 and have never had any problems fitting into a seat on a plane, even tiny ones flying to the Isle of Man. I wouldn’t worry about it.

ManyATrueWord · 05/08/2026 17:55

I'm a big fat 26 and was fine on Ryan Air. In fact the young man with large shoulders was in my space way more than I was in his.

LemonSnail · 05/08/2026 17:56

Could you switch to an aisle seat?

HollyMcDolly · 05/08/2026 17:56

youalright · 05/08/2026 17:54

She is a normal person

Normal size then

youalright · 05/08/2026 18:03

HollyMcDolly · 05/08/2026 17:56

Normal size then

If you're are meaning average instead of normal she is only one clothes size bigger then the average uk woman

TheChosenTwo · 05/08/2026 18:04

I’ve flown as an 18 and while I did fit in the seats just fine I definitely didn’t have extra room in my space like a pp mentioned - I’m aware that different carriers may have totally different seat dimensions so not discrediting them; we also carry weight differently!
you’ll be absolutely fine, I had belt leftover so it would have accommodated me easily a few sizes bigger but if you carry your weight round your middle then do just ask for an extender.
secondary to this though, ive never known how you might actually book 2 seats for one passenger because when we book flights we have to have a name for each seat - do you just put the same name in for each?

FormerlySpeckledyHen · 05/08/2026 18:05

Stop worrying about and enjoy your trip OP.

Cyclewidow46 · 05/08/2026 18:06

No you won't need 2 seats and you won't need a belt extender either. Nor will you encroach on the space of the person sitting next to you. I used to be a size 18 so speak from experience.

Simonjt · 05/08/2026 18:06

If you’re really worried put some news paper on a hard chair, sit on it then draw on the news paper at your widest part and measure that, seat size or below and you won’t need an additional seat.

HollyMcDolly · 05/08/2026 18:07

youalright · 05/08/2026 18:03

If you're are meaning average instead of normal she is only one clothes size bigger then the average uk woman

Whatever, nobody should be questioning whether they need 2 plane seats. Unless she’s so big that it’s a problem for other passengers to get in their seats or move around her then there is no problem. I don’t know anyone nor have I ever in 50 years big enough to need 2 plane seats

Stompythedinosaur · 05/08/2026 18:08

You won't need an extra seat.

TheLambtonWorm · 05/08/2026 18:11

How tall are you and where do you carry your weight?. I won't lie, I flew Ryan Air as a size 20 and it wasn't fun. I didn't need a belt extender but I was squeezed into that seat (and in the middle). Those few hours were the worst of my life just profusely apologising to the people either side of me for taking up space. They were both fine but it wasn't fun. An aisle or even window seat would have been fine.

latetothefisting · 05/08/2026 18:17

You'll fit in it but it might not be the most comfortable - Ryanair in particular are tight particularly if you draw the short straw and get the middle seat. If you havent already done so Id spend the extra £7-£10 or however much they charge to book a specific seat to pick an aisle one though, just for your own comfort.

Swissmeringue · 05/08/2026 18:23

allthelonelyppl · 05/08/2026 17:21

No, I don’t. I’ve never flown before and I’m sure it would be uncomfortable if I was too big

I promise you don't need 2 seats at a size 18, I'd also be extremely surprised if you need a seatbelt extender. I'm a 16/18, I prefer a window seat if I'm travelling alone as I'll just go to sleep, you'll be fine.

AllTheChicken · 05/08/2026 18:24

Even if you buy a second seat, if no one checks in wont it be given to someone else anyway? Or can you tick a box to say you need the second seat?

Either way, you wont need it!!

youalright · 05/08/2026 18:24

HollyMcDolly · 05/08/2026 18:07

Whatever, nobody should be questioning whether they need 2 plane seats. Unless she’s so big that it’s a problem for other passengers to get in their seats or move around her then there is no problem. I don’t know anyone nor have I ever in 50 years big enough to need 2 plane seats

But she is questioning it as she's never flown before if you don't want to answer and just be nasty to op then what's the point in beimg on the thread

Ineffable23 · 05/08/2026 18:25

Size 18 definitely isn't two plane seat territory. I have never needed a seatbelt extender even at my heaviest. A window seat will also be fine.

Mermaidmusing · 05/08/2026 18:25

Definitely no need to pay for another seat, you’d be paying double for your flight. I was a size 18/20 until very recently and never had a problem with airplane seats. I’d rather sit next to a size 18 woman than an average sized man, spreading his legs into my space and hogging the arm rests, as they often do.

If you find the seatbelt too small (very unlikely if you’re only a size 18) they do have seatbelt extensions available on board. Relax and enjoy your flights, you’ll be fine.

HollyMcDolly · 05/08/2026 18:28

youalright · 05/08/2026 18:24

But she is questioning it as she's never flown before if you don't want to answer and just be nasty to op then what's the point in beimg on the thread

I’m not being nasty I don’t mean to be anyway, I just meant that lots of women travel of various sizes & none that I’ve encountered needed an additional seat