Babyzen yoyo
Be aware it’s likely on airlines such as Ryanair you’ll be asked to put the stroller in the hold regardless, especially on busy/ summer flights. This is becoming the norm now amongst lots of airlines, especially the budget ones as they don’t have space on board for everyone’s bags and strollers seem to be the first thing they check so if you’re buying a pram especially for that purpose just be aware 😊 We have the Joolz Aer+, amazing but definitely not cheap x
I don't know what the Ryanair requirements are but we have the ergobaby metro+ and have put it on overhead lockers on planes!