Ryanair and Vueling are budget airlines. If you read all the fine print you will be good. Keep in mind that you need to bring a printout of your boarding pass or have it on your smartphone. they will charge you if they have to print it at the airport. Their baggage policy is pretty strict, as always it is cheaper to buy add-ons in advance and not at the airport.
I never had issues with them, they are quite punctual and service is very nice. You need to pay for your drinks and meal onboard or prepay. I like their sandwiches better than most other airline food.
Make sure to check if it is the exact airport that you need, because they often use smaller, lesser known airports.
I use them often for short city trips and never had a problem with them.