Air Europa, Ryanair and easyJet will get you to Baiona at great prices. With over 1000 travel companies on Omio, you can find the best flight times, prices and tickets for your trip.
EasyJet is a British multinational low-cost airline headquartered at London Luton Airport (LTN). It’s the largest UK-based carrier based on the number of passengers carried. EasyJet flies to over 150 destinations across Europe and North Africa, making it a popular budget airline for travelers. To keep fares as low as possible, easyJet tickets are non-refundable and no complimentary snacks are provided onboard. All fare types include allowance of one small personal bag, while additional fees apply for carry-on luggage and checked luggage.
Here are some other resources that might have the information you need