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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:
GertrudePerkinsPaperyThing · 07/08/2026 08:55

MamaToABeautifulBoy · 07/08/2026 08:51

I ran it through AI and you’ll be fine:

Ryanair’s standard seats are roughly 43 cm / 17 inches wide, so they are fairly narrow. As a very rough guide:

  • UK 8-14: very unlikely to extend beyond the seat itself.
  • UK 16-18: generally still fine, although someone broad through the hips may find it snug.
  • UK 20-22: more dependent on body shape. A particularly hip-heavy person may start to make contact with the armrests or neighbouring space.
  • UK 24+: increasingly likely that a standard 17-inch seat will be genuinely tight and there may be some encroachment, particularly at the hips/thighs.

Sorry ignore this post, I missed that you said it was an AI summary not RyanAir’s

SleepingStandingUp · 07/08/2026 08:59

I was a size 18 with a large baby bump, I needed a seat belt extender cos I was like 28 weeks with a huge swimming pool inside me but I didn't need to book out a row.

Defender90 · 07/08/2026 09:01

I flew earlier this year on Jet2, last year with BA and at size 22 had no problems with the seat, I flew Buzz Air before (think it’s a Ryan air offshoot) and seat was a bit tighter but manageable for the few hours.

you’ll be fine.

perimenopoppet · 07/08/2026 14:00

I fly short haul budget regularly and was 18 at my heaviest- bottom heavy pear shape. At that size I had no issues that would cause a neighbour discomfort or necessitate an extender belt. I did feel the sides of the seat against me.

the one important thing I learned and haven’t seen mentioned yet is that some planes have slightly narrower seats in the back few rows as the plane tapers but they still have 3 seats all the way rather than dropping to 2 seats as you see on nicer airlines. I experienced this on an EasyJet flight, luckily only an hour but was very uncomfortable. At size 18 that little bit makes a difference.

you’ll be fine. Guaranteed there will be much larger passengers.

Myli1 · 07/08/2026 18:55

Standard width of Ryanair seats is 430mm, so you might find it a bit tight, but probably ok for a short flight.

Badanxiety · Yesterday 14:16

I flew with easy jet at a size 24 and was fine, you should have no issues, I didn’t even need the seat belt extended

Wingingit73 · Yesterday 18:59

No dont worry.

Imanexcellentdrivercharliebabbit · Yesterday 19:06

allthelonelyppl · 05/08/2026 17:18

I’m wider than that! Oh god! I’m flying alone so no prospect of being sat next to family

When I was bigger (22) 5’7 I was fine with DH as we put the armrest up after takeoff but I’m not sure I would have been comfortable with it down which obviously it would be next to a stranger ? (If I flew economy I would 💯 expect arm rests firmly down myself when flying next to anyone I don’t know, that’s normal no? )

Get the tape measure out like someone upthread suggested although at a size 18 you are a lot smaller than I was to be fair x

have a great hols x

Imanexcellentdrivercharliebabbit · Yesterday 19:09

DoloresDelEriba · 06/08/2026 18:55

I feel feeding six people for a week with one chicken will be popping up soon…

With or without the ‘massive’ salads ?
lol x

mathanxiety · Yesterday 20:25

A lot depends on how the weight is distributed. If part of what makes you a size 18 is boobs and a gut, then you're good to go. If it's a very large derriere then I'd consider two seats.

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