A coastal cityscape with a bay, boats, and a mountainous backdrop.

Cheap Flights to Donostialdea/Donostia-San Sebastián | Popular Routes to Donostialdea/Donostia-San Sebastián from HK$924

View HK$924 flight on Thu, 3 Sept 2026Opens in a new window

Popular airlines to Donostialdea/Donostia-San Sebastián

  • KLM

  • Air France

  • Lufthansa

  • Iberia

  • Swiss International Air Lines

  • Air Europa

  • TAP Portugal

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 35% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Donostialdea/Donostia-San Sebastián

Prices were available within the past 7 days and start at HK$924 for one-way flights and HK$2,163 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Tue, 11 Aug - Tue, 18 Aug
BCN
Barcelona
EAS
San Sebastián
HK$2,163 Return, found 2 days ago
HK$2,163
Return
found 2 days ago
Select Iberia flight, departing Tue, 11 Aug from Barcelona to San Sebastián, returning Tue, 18 Aug, priced at HK$2,163 found 2 days ago
Iberia
Tue, 11 Aug - Tue, 18 Aug
BCN
Barcelona
EAS
San Sebastián
HK$2,293 Return, found 2 days ago
HK$2,293
Return
found 2 days ago
Select Iberia flight, departing Tue, 11 Aug from Barcelona to San Sebastián, returning Tue, 18 Aug, priced at HK$2,293 found 2 days ago
Iberia
Tue, 11 Aug - Tue, 18 Aug
BCN
Barcelona
EAS
San Sebastián
HK$2,323 Return, found 2 days ago
HK$2,323
Return
found 2 days ago
Select Iberia flight, departing Tue, 11 Aug from Barcelona to San Sebastián, returning Tue, 18 Aug, priced at HK$2,323 found 2 days ago
Vueling Airlines
Sat, 18 Jul - Fri, 31 Jul
LHR
London
EAS
San Sebastián
HK$2,441 Return, found 4 days ago
HK$2,441
Return
found 4 days ago
Select Vueling Airlines flight, departing Sat, 18 Jul from London to San Sebastián, returning Fri, 31 Jul, priced at HK$2,441 found 4 days ago
Iberia
Tue, 11 Aug - Tue, 18 Aug
BCN
Barcelona
EAS
San Sebastián
HK$2,443 Return, found 2 days ago
HK$2,443
Return
found 2 days ago
Select Iberia flight, departing Tue, 11 Aug from Barcelona to San Sebastián, returning Tue, 18 Aug, priced at HK$2,443 found 2 days ago
Iberia
Tue, 11 Aug - Tue, 18 Aug
BCN
Barcelona
EAS
San Sebastián
HK$2,453 Return, found 2 days ago
HK$2,453
Return
found 2 days ago
Select Iberia flight, departing Tue, 11 Aug from Barcelona to San Sebastián, returning Tue, 18 Aug, priced at HK$2,453 found 2 days ago
Iberia
Tue, 11 Aug - Tue, 18 Aug
BCN
Barcelona
EAS
San Sebastián
HK$2,563 Return, found 2 days ago
HK$2,563
Return
found 2 days ago
Select Iberia flight, departing Tue, 11 Aug from Barcelona to San Sebastián, returning Tue, 18 Aug, priced at HK$2,563 found 2 days ago
British Airways
Fri, 9 Oct - Sun, 11 Oct
LCY
London
EAS
San Sebastián
HK$4,818 Return, found 2 days ago
HK$4,818
Return
found 2 days ago
Select British Airways flight, departing Fri, 9 Oct from London to San Sebastián, returning Sun, 11 Oct, priced at HK$4,818 found 2 days ago
Qatar Airways
Fri, 10 Jul - Tue, 14 Jul
HKG
Hong Kong SAR
EAS
San Sebastián
HK$7,165 Return, found 4 days ago
HK$7,165
Return
found 4 days ago
Select Qatar Airways flight, departing Fri, 10 Jul from Hong Kong SAR to San Sebastián, returning Tue, 14 Jul, priced at HK$7,165 found 4 days ago
Finnair
Fri, 7 May - Sat, 15 May
HKG
Hong Kong SAR
EAS
San Sebastián
HK$10,233 Return, found 6 days ago
HK$10,233
Return
found 6 days ago
Select Finnair flight, departing Fri, 7 May from Hong Kong SAR to San Sebastián, returning Sat, 15 May, priced at HK$10,233 found 6 days ago

Trending flights to Donostialdea/Donostia-San Sebastián

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Fri, 10 Jul - Tue, 14 Jul
HKG
Hong Kong SAR
EAS
San Sebastián
HK$7,165 Return, found 4 days ago
HK$7,165
Return
found 4 days ago
Select Qatar Airways flight, departing Fri, 10 Jul from Hong Kong SAR to San Sebastián, returning Tue, 14 Jul, priced at HK$7,165 found 4 days ago

Frequently asked questions

How do I find cheap flights to Donostialdea/Donostia-San Sebastián that have flexible change policies?
We get that travel schedules can change in the blink of an eye, so choosing a flexible ticket with Expedia is always a smart move. Simply mark the "No change fee" box directly below the "Flexible change policies" filter. Your low-cost, flexible flight to Donostialdea/Donostia-San Sebastián is just a few clicks away.
How can I find cheap tickets to Donostialdea/Donostia-San Sebastián?
In the last seven days, HK$2,163 was the lowest price for a flight to Donostialdea/Donostia-San Sebastián. For even bigger savings, book well ahead of time and be flexible with your travel dates. Search for your airfare to Donostialdea/Donostia-San Sebastián, then compare prices for similar time frames by clicking on the "flexible dates" link above.
How much is a flight to Donostialdea/Donostia-San Sebastián?
You could have nabbed a return air ticket to Donostialdea/Donostia-San Sebastián from anywhere between HK$2,163 and HK$10,233 in the last seven days. For one-way journeys departing from Barcelona (BCN), the lowest price during this period was just HK$924.
When is the cheapest time to fly to Donostialdea/Donostia-San Sebastián?
If you're not fixed on what date you travel to Donostialdea/Donostia-San Sebastián, fly out early on in the week. The most economical day to take off is normally Tuesday, closely followed by Monday. Saturday is typically the priciest day, with many people preferring to take off on the weekend.
How much is a plane ticket to Donostialdea/Donostia-San Sebastián?
In the last seven days, plane tickets to Donostialdea/Donostia-San Sebastián ranged from HK$2,163 to HK$10,233.
What is the best time to go to Donostialdea/Donostia-San Sebastián?
A lovely time to visit San Sebastián is after June 20 when the summer season begins. In Donostialdea/Donostia-San Sebastián's busiest city, average temperatures fluctuate from 16ºC to 21ºC at this time — excellent weather for seeing the sights! April, May and June are the most popular months to discover this destination.
What months are the cheapest to book a flight to Donostialdea/Donostia-San Sebastián?
To bag an awesome deal to Donostialdea/Donostia-San Sebastián, try to book during the month of February when prices are at their cheapest. When's the most costly? In the U.S, it's the festive month of December.

Book with confidence

About Donostialdea/Donostia-San Sebastián

Expedia offers flights to Donostialdea/Donostia-San Sebastián to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Donostialdea/Donostia-San Sebastián or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Donostialdea/Donostia-San Sebastián
*Available to Expedia members.