Cheap flights from London to San Sebastian

San Sebastian sits on the northern coast of Spain, where summer brings long daylight and warm beach weather, and that is when demand peaks. July and August are the busy stretch, with school holidays from both ends of the route adding pressure. September is the cheapest month, once the peak has passed but the weather stays settled. Winter is mild and quiet, apart from the Christmas and New Year weeks. Use the dated prices for every month to see how weekdays compare, and commit early to a summer date, because those go first.

Roughly half the airlines on this route are low-cost: Jet2, Easyjet, Vueling, Wizz Air UK and Wizz Air Malta. The other half come from the full-service side: British Airways, Iberia, and their regional arms BA CityFlyer, BA EuroFlyer and Iberia Express. The difference shows in the fare: low-cost tickets cover little beyond your seat, with bags, seat choice and food as paid extras, while full-service fares include a cabin bag and more flexible conditions. You can fly this route nonstop, and some of these carriers also sell it with a change of plane, so weigh the cheaper connection against the extra travel time.

Sort out your transfer before you land: San Sebastian has one small airport, so there is no arrival-side choice to weigh, only the way into town. The usual option is the bus to the centre, with taxis waiting outside if you arrive late or carry a lot of luggage. The terminal is compact and you are through it quickly, but check the bus timetable for the evening, because the service thins out as the day goes on.

Currency

EUR (€)

Power sockets

Type C, F · 230 V

Language

Spanish

Emergency number

112, 061, 091

Driving side

right

Calling code

+34

Internet domain

.es

EU / Schengen

EU member, Schengen area

Population of San Sebastian

190 k (2025)

Time zone

UTC+02 (Europe/Madrid)

Country facts: Wikidata

• Check which of London's five airports your flight leaves from, since the airline and the departure time change with it.
• Read the baggage allowance before you pay, because the low-cost fares cover little beyond a personal item.
• Make sure your passport meets Spain's entry rules for UK travellers, including the remaining validity.
• Book connecting itineraries as one ticket or leave a long gap, since a separate second airline will not rebook you.
• Compare September with the summer months in the price calendar, as the same trip costs less once the peak ends.
• Decide whether you need the nonstop option or whether a connection suits your schedule.