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Cheap flights from London Heathrow Airport to San Sebastian from £55

LHR — EAS
16 Oct — 23 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to San Sebastian

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to San Sebastian

Sun 13/1209:55 -
1 stop6h 40m
Wed 16/1214:10 -
1 stop6h 55m
Deal found 15/9£111
Sun 13/1209:55 -
1 stop6h 40m
Mon 14/1214:10 -
1 stop6h 55m
Deal found 12/9£127
Sat 10/1020:50 -
1 stop10h 30m
Sat 17/1017:55 -
1 stop16h 15m
Deal found 13/9£138
Fri 16/1020:50 -
1 stop10h 30m
Mon 19/1021:30 -
1 stop11h 55m
Deal found 13/9£145
Tue 20/1020:50 -
1 stop10h 30m
Thu 5/1114:10 -
1 stop6h 55m
Deal found 11/9£150
Tue 20/1020:50 -
1 stop10h 30m
Tue 10/1121:30 -
1 stop11h 55m
Deal found 11/9£151
Wed 21/1020:50 -
1 stop10h 45m
Thu 5/1114:10 -
1 stop6h 55m
Deal found 11/9£157
Wed 21/1020:50 -
1 stop10h 45m
Tue 10/1121:30 -
1 stop11h 55m
Deal found 11/9£159
Sat 10/1015:30 -
2 stops16h 10m
Sat 17/1021:30 -
1 stop13h 00m
Deal found 13/9£160
Tue 13/1020:50 -
1 stop10h 30m
Tue 20/1021:30 -
1 stop11h 55m
Deal found 12/9£162
Tue 20/1020:50 -
1 stop10h 30m
Sat 7/1113:40 -
1 stop5h 35m
Deal found 11/9£166

Find flight deals from Heathrow to San Sebastian

Round-trip from

£111

One-way from

£55

Popular in

December

Cheapest in

November

Average price

£384
Vueling
  • Vueling
  • 13/12-16/12
  • 2 total stops
  • 13h 35m total
  • London to San Sebastian
Search Deals
Vueling
  • Vueling
  • 14/10-31/12
  • 1 total stop
  • 10h 45m total
  • London to San Sebastian
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 17% potential price decrease (£34 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Sun 6/12

09:55-17:35

1 stop6h 40m

San Sebastián

Wed 31/12

00:00-00:00

Nonstop0h 00m

£68

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Fri 13/11

20:50-13:35

1 stop15h 45m

San Sebastián

Wed 31/12

00:00-00:00

Nonstop0h 00m

£70

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Fri 30/10

20:50-13:35

1 stop15h 45m

San Sebastián

Wed 31/12

00:00-00:00

Nonstop0h 00m

£71

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Sat 31/10

09:55-20:35

1 stop9h 40m

San Sebastián

Wed 31/12

00:00-00:00

Nonstop0h 00m

£76

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Mon 5/10

09:55-08:20

1 stop21h 25m

San Sebastián

Wed 31/12

00:00-00:00

Nonstop0h 00m

£78

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Thu 29/10

19:05-08:40

1 stop12h 35m

San Sebastián

Wed 31/12

00:00-00:00

Nonstop0h 00m

£95

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Sun 18/10

20:50-08:20

1 stop10h 30m

San Sebastián

Wed 31/12

00:00-00:00

Nonstop0h 00m

£95

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Sat 3/10

09:55-08:20

1 stop21h 25m

San Sebastián

Wed 31/12

00:00-00:00

Nonstop0h 00m

£102

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Sun 13/12

09:55-17:35

1 stop6h 40m

San Sebastián

Wed 16/12

14:10-20:05

1 stop6h 55m

£111

LondonSan Sebastian

LHR London Heathrow - EAS San Sebastián

LHREAS

London Heathrow

Fri 25/9

20:50-08:20

1 stop10h 30m

San Sebastián

Wed 31/12

00:00-00:00

Nonstop0h 00m

£113

Flights are sorted by cheapest return flights first.

Deals found on 12/9

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Heathrow to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Heathrow with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to San Sebastian

What’s the top stopover airport for flights from London Heathrow Airport to San Sebastian?

Madrid (MAD) – chosen by Cheapflights users on 88% of one-stop itineraries from London Heathrow Airport to San Sebastian on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to San Sebastian?

Barcelona (BCN) is the most affordable one-stop option, with an average return flight price of £193.

What’s the fastest stopover option from London Heathrow Airport to San Sebastian?

Flights via Barcelona (BCN) have the shortest average one-way travel time for one-stop routes: 6h 25m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to San Sebastian?

Flights via Madrid (MAD) offer the fastest connection on this route, with an average stopover time of 1h 58m.

Reviews of airlines servicing San Sebastian

See what other customers who have flown with Iberia from London Heathrow Airport to San Sebastian have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Iberia
7.0
Good
3,248 reviews
Check prices

Entertainment

6.6

Food

6.4

Comfort

6.7

Crew

7.7

Overall

7.0

Boarding

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

LHR - DFW

Transparency. There was a gate change that was not disclosed on my ticket that made the connection to Vegas hurried. Also, it’s a given that for international travel, luggage pickup is required at first port of entry in the US, but please don’t have international employees set the expectation that luggage does not have to be picked up until the final destination. If I followed her instructions, my luggage would have been sitting at my connection now.
Iberia
7.0
Good
3,248 reviews
Iberia
7.0
Good
3,248 reviews
Check prices

Entertainment

6.6

Food

6.4

Comfort

6.7

Crew

7.7

Overall

7.0

Boarding

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

LHR - DFW

Transparency. There was a gate change that was not disclosed on my ticket that made the connection to Vegas hurried. Also, it’s a given that for international travel, luggage pickup is required at first port of entry in the US, but please don’t have international employees set the expectation that luggage does not have to be picked up until the final destination. If I followed her instructions, my luggage would have been sitting at my connection now.

Related info for your journey

  • What airport do you fly into for flights to San Sebastian from London Heathrow?

    Located just 9.7 mi from the city center, San Sebastián is the airport most travelers will use when flying to San Sebastian from London Heathrow. Booking flights from London Heathrow to San Sebastián (EAS) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 1 airline.

  • How long is the flight from London Heathrow Airport to San Sebastian?

    Airlines like Vueling fly from London Heathrow Airport to San Sebastian in about 6h 40m. The time it takes to get you to your destination can typically vary by up to . The distance between London Heathrow Airport and San Sebastian is about 564 mi.

  • What is the cheapest airline to fly from London Heathrow Airport to San Sebastian round-trip?

    Flying on Iberia is currently your cheapest option to San Sebastian, with prices starting at £199.

  • Can I find deals for flights from Heathrow to San Sebastian that include hotel bookings?

    Yes. In addition to deals on Heathrow to San Sebastian flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to San Sebastian?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to San Sebastian.

  • Can I find deals for business class flights from Heathrow to San Sebastian?

    Yes. Cheapflights offers flight deals from Heathrow to San Sebastian by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Heathrow to San Sebastian

AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£199Average£345FlexibilityNo cancel feeOn-time77%
Search Iberia flights

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