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Cheap flights from London Heathrow Airport to San Sebastian from £61

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EAS
10 Apr — 17 Apr1
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
Explore the most affordable flight options available from Heathrow to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 March 2026.

Mon 13/420:50
LHR
-
EAS
1 stop10h 30m
Vueling
Wed 22/408:55
EAS
-
LHR
1 stop12h 10m
Vueling
Deal found 10/3£113
Tue 14/420:50
LHR
-
EAS
1 stop10h 30m
Vueling
Wed 22/408:55
EAS
-
LHR
1 stop12h 10m
Vueling
Deal found 10/3£114
Tue 14/420:50
LHR
-
EAS
1 stop10h 30m
Vueling
Tue 21/408:55
EAS
-
LHR
1 stop12h 10m
Vueling
Deal found 9/3£116
Wed 22/420:50
LHR
-
EAS
1 stop10h 45m
Vueling
Sat 25/408:55
EAS
-
LHR
1 stop12h 10m
Vueling
Deal found 9/3£117
Sat 25/420:50
LHR
-
EAS
1 stop10h 30m
Vueling
Sat 2/508:55
EAS
-
LHR
1 stop12h 10m
Vueling
Deal found 11/3£142
Wed 15/420:50
LHR
-
EAS
1 stop10h 45m
Vueling
Wed 22/417:55
EAS
-
LHR
1 stop16h 15m
Vueling
Deal found 6/3£148
Tue 21/420:50
LHR
-
EAS
1 stop10h 30m
Vueling
Tue 28/408:55
EAS
-
LHR
1 stop12h 10m
Vueling
Deal found 7/3£150
Tue 5/520:50
LHR
-
EAS
1 stop10h 30m
Multiple Airlines
Sat 9/513:40
EAS
-
LHR
1 stop5h 35m
Multiple Airlines
Deal found 6/3£153

Find flight deals from Heathrow to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to San Sebastian (EAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 March 2026.

Round-trip from

£113

One-way from

£61

Popular in

April

Cheapest in

November

Average price

£206
Vueling
  • Vueling
  • 13/4-22/4
  • 2 total stops
  • 22h 40m total
  • London to San Sebastian
Search Deals
Vueling
  • Vueling
  • 15/6
  • 1 total stop
  • 10h 30m total
  • London to San Sebastian
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£77 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to San Sebastian that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 March 2026.
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 - EAS

LHREAS

London Heathrow

Thu 9/4

20:50-08:20

1 stop10h 30m

San Sebastián

Thu 16/4

21:30-12:00

1 stop15h 30m

£208

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Sat 29/8

20:00-08:40

1 stop11h 40m

San Sebastián

Sat 5/9

08:55-22:30

1 stop14h 35m

£250

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Tue 1/9

15:10-08:40

2 stops16h 30m

San Sebastián

Fri 4/9

21:30-14:25

2 stops17h 55m

£299

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Mon 20/4

15:00-08:40

2 stops16h 40m

San Sebastián

Mon 27/4

21:30-14:15

2 stops17h 45m

£330

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Wed 8/4

20:50-13:00

2 stops15h 10m

San Sebastián

Wed 15/4

13:40-09:10

2 stops20h 30m

£336

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Mon 15/6

20:50-13:00

2 stops15h 10m

San Sebastián

Thu 18/6

09:20-20:05

2 stops11h 45m

£340

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Fri 7/8

15:10-08:40

2 stops16h 30m

San Sebastián

Fri 14/8

21:30-14:25

2 stops17h 55m

£355

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Wed 15/4

15:10-08:40

2 stops16h 30m

San Sebastián

Wed 22/4

21:30-14:25

2 stops17h 55m

£374

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Thu 30/4

20:50-13:00

2 stops15h 10m

San Sebastián

Tue 5/5

09:20-20:05

2 stops11h 45m

£378

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Fri 26/6

11:30-08:20

2 stops19h 50m

San Sebastián

Fri 24/7

08:55-19:10

2 stops11h 15m

£387

Flights are sorted by cheapest return flights first.

Deals found on 6/3

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from London Heathrow Airport to San Sebastian?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Sebastian (average of £39). Flying from London Heathrow Airport to San Sebastian in July is currently the most expensive (average of £137). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing San Sebastian

Get insights into the airlines that provide service to San Sebastian. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Sebastian. Reviews last updated 11 March 2026.
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
3,133 reviews
Check prices

Food

6.4

Boarding

7.1

Overall

7.0

Comfort

6.8

Entertainment

6.6

Crew

7.7

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
3,133 reviews
Iberia
7.0
Good
3,133 reviews
Check prices

Food

6.4

Boarding

7.1

Overall

7.0

Comfort

6.8

Entertainment

6.6

Crew

7.7

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

Find useful and relevant information for your journey from Heathrow to San Sebastian. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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.

  • 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. You may be able to fly from London Heathrow Airport to San Sebastian for 32% less than the average price by searching for this airline.

  • 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.

  • What is the cheapest month to book a flight from London Heathrow Airport to San Sebastian?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Sebastian (average of £39). Flying from London Heathrow Airport to San Sebastian in July is currently the most expensive (average of £137). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Heathrow to San Sebastian

Discover the top airline that operate flights from Heathrow to San Sebastian. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£199Average£327FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to San Sebastian?

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Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Sebastian?

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Can Cheapflights find flights from Heathrow to San Sebastian with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to San Sebastian flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Heathrow to San Sebastian become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to San Sebastian on Cheapflights with our Price Alert feature and get notified when better prices are available.

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