Just back with TUI from NCL > IBZ > NCL. The announcement was "we are a cashless airline accepting Visa and Mastercard with a £200 limit per person. We don’t accept Monzo and Revolut or other prepaid cards.
I used my monzo plus card, just holding it upside down so they didn’t see the branding and it worked fine.
Maybe Monzo needs to reach out to them…
I had exactly the same on TUI flight last week. same announcement and same outcome - I used my lime green Monzo card with my thumb over the Monzo logo, no problems… but I had no doubt they would have refused a coral card on sight !
We flew to Turkiye last year and the Tui attendant said they wouldn’t accept Monzo so I used Google Pay which went through (which defaulted to Monzo), this year flying to Croatia they said no Monzo so I said I’d use Google pay but they said they’d need to see what it was using, they wouldn’t accept Monzo via Google Pay so I had to change to Wise.
At the start of this month I flew Ryanair to Ibiza and made two purchases with my Monzo via Apple Pay.
When Ryanair have tried to take the payments, over 10 times monzo is declining then despite their being money in my account. I spoke to support and they said it’s for fraud reasons and they told me to get in touch with Ryanair, update my payment details to not use Apple Pay.
No problems today with Jet2 using Monzo
I have just had a similar problem with the Apple App Store. When I contacted Monzo they said they decided it as it was a high risk transaction and that I should contact Apple 
I had to see a private Chiropodist recently who said “we don’t take Monzo” when he saw the card in my wallet. I asked if they did contactless, which of course they did, and just used my Flex via Apple Pay. It went through fine, of course 
Edit: oops, not on board an aircraft, sorry!
We fly TUI next week so will see how we go.
Revolut, Monzo, Lloyds in that order of payment 
Did you correct her?
Not only MasterCard debit but World Elite!
That said, Revolut also comes in World Elite and isn’t prepaid either.
“Offline environment” and can’t confirm there’s enough money on the card…
Well that means they shouldn’t be accepting any payments by any card in the offline environment, that’s the point of it!
As far as I know, the card issuer controls whether offline payments are able to be made, not the merchant choosing to not accept them.
They need to get with the times.
They’ll have a floor limit and that’s the risk.
Sigh again with this, it’s not a prepaid card 
I think this is down to when they had problems initially and the staff haven’t been educated
Wonder what TUI will say if you provide them with impeccably dated evidence:
At this point in time, enough time has passed that Monzo only existed as pre-paid cards for a blink of an eye.
Dont have monzo but kroo card works on jet2
The stupid thing is that they say this, but when you use the card they just tap and move on, at least they used to
Used my monzo premium on tui recently with no issues even though they said they don’t take monzo on the announcements
Think they’re a bit behind the times!!
