Cheap flights from Dublin to San Sebastian

The stretch from summer into the Christmas period is when fares climb, so expect to pay more if you travel in July or December. January is the cheapest month on this route, and the calendar on this page covers September through March, with May as the other month worth checking. Outside the destination's summer, the Basque coast stays mild, so an off-peak trip costs less and still works. Midweek departures tend to be quieter on price than weekend ones, and school holidays push everything up.

What the fare includes is where these airlines really differ, so read the fare details before you pay. Aer Lingus, British Airways and Iberia are full-service carriers whose standard fares come with cabin baggage included, while Vueling Airlines, Iberia Express and some BA CityFlyer fares work closer to a low-cost model where checked bags and seat choice appear as extras. Finnair also sells tickets on this route through its own network. Since every itinerary here is connecting, check whether the two legs sit on one ticket or two — that changes who rebooks you if the first flight is late.

Sort your onward plans before you land: San Sebastian airport sits outside the city, and the usual way in is by bus or taxi rather than any rail link. The airport is small, so you will be outside quickly, but leave a little time because buses do not run around the clock. If your connection was tight, note that the same airport handles the carriers listed, so a missed bag is reported at the desk there, not in Dublin. Have your accommodation address handy for the taxi.

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+01 (Europe/Madrid)

Country facts: Wikidata

• Check whether your connection is on a single ticket or two separate ones, because separate tickets leave you stranded if the first leg is late.
• Check the baggage allowance on each leg, since low-cost fares often sell it as an add-on.
• Check your passport meets Spain's entry requirements before you book.
• Check the layover length against the minimum connection time at the hub airport.
• Check the month you plan to fly against the price calendar, since January is the cheapest on this route.