Well that was a long 2 hours

that's what she said

You don't say?

First time I saw number 1 comment have 0 votes.

Sounds like a good time to try skydiving for the first time, OP

without a parachute, i should add.

Seems like a good time to tell them all about how great your life has been lately, or shrink into a tiny ball and try to disappear...

I was stuck behind a dude who didn't stop farting the entire 10 hour flight! Nightmare.

Nope Airlines: Coming to an airport near you.

Good time to show her what she missed

It depends on who ended things. If it was you then I picture this scenario
You: Uhmm, how have you been?
Her: ... *gives you the death glare*
Mum: Sneers

If it was her though, you are in the clear. She's the one who will be feeling most awkward.
Either way, just give them a friendly 'Good day', put on a movie and ignore them (unless they try to initiate an amicable conversation with you).

It would still be awkward regardless who ended it if there's still feelings involved.

The actual fuck ?

At least it was a 2hour flight not a 12h.

They should give you a sympathy upgrade to 1st class.