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Cheap flights from London Heathrow Airport to San Sebastian from £68

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EAS
18 Dec — 25 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 18 November 2025.

Sat 6/1219:05LHR - EAS
1 stop12h 35mIberia
Sat 13/1221:30EAS - LHR
1 stop11h 55mIberia
Deal found 16/11£150
Tue 2/1219:05LHR - EAS
1 stop12h 35mIberia
Tue 9/1213:40EAS - LHR
1 stop6h 10mIberia
Deal found 16/11£166
Tue 2/1219:05LHR - EAS
1 stop12h 35mIberia
Sat 13/1213:40EAS - LHR
1 stop6h 10mIberia
Deal found 16/11£172
Wed 3/1219:40LHR - EAS
1 stop12h 00mIberia
Tue 9/1213:40EAS - LHR
1 stop5h 35mIberia
Deal found 16/11£179
Mon 1/1219:40LHR - EAS
1 stop12h 00mIberia
Wed 10/1213:40EAS - LHR
1 stop6h 10mIberia
Deal found 16/11£182
Tue 2/1210:45LHR - EAS
1 stop9h 05mIberia
Wed 10/1213:40EAS - LHR
1 stop4h 35mIberia
Deal found 16/11£184
Mon 1/1209:15LHR - EAS
1 stop10h 35mIberia
Sat 13/1213:40EAS - LHR
1 stop4h 35mIberia
Deal found 16/11£185
Mon 1/1219:40LHR - EAS
1 stop12h 00mIberia
Sun 7/1221:30EAS - LHR
1 stop11h 55mIberia
Deal found 16/11£191
Thu 11/1219:05LHR - EAS
1 stop12h 35mIberia
Tue 16/1209:20EAS - LHR
1 stop8h 15mIberia
Deal found 16/11£195
Tue 2/1210:45LHR - EAS
1 stop9h 05mIberia
Thu 11/1213:40EAS - LHR
1 stop4h 35mIberia
Deal found 16/11£197
Wed 31/1219:05LHR - EAS
1 stop12h 35mIberia
Wed 7/121:30EAS - LHR
1 stop20h 45mIberia
Deal found 16/11£198
Thu 4/1210:45LHR - EAS
1 stop20h 55mIberia
Wed 10/1213:40EAS - LHR
1 stop5h 35mIberia
Deal found 16/11£198

Cheap 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 18 November 2025.

Round-trip from

£149

One-way from

£68

Popular in

April

Cheapest in

November

Average price

£146
Iberia
  • Iberia
  • 7/3-11/3
  • 2 total stops
  • 27h 35m total
  • London to San Sebastian
Search Deals
Vueling
  • Vueling
  • 2/3
  • 1 total stop
  • 26h 35m total
  • London to San Sebastian
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£59 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 November 2025
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 18 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to San Sebastian that are best for you.

Fly from

Heathrow

Fly to

San Sebastian

Route

Depart

Return

Price

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Sat 7/3

20:50-13:30

1 stop15h 40m

San Sebastián

Wed 11/3

21:30-08:25

1 stop11h 55m

£149

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Tue 3/2

19:40-08:40

1 stop12h 00m

San Sebastián

Tue 10/2

21:30-08:25

1 stop11h 55m

£151

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Thu 1/1

19:40-08:40

1 stop12h 00m

San Sebastián

Thu 8/1

14:05-18:00

1 stop4h 55m

£165

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Thu 7/5

20:50-08:20

1 stop10h 30m

San Sebastián

Tue 12/5

21:30-08:25

1 stop11h 55m

£168

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Thu 23/4

20:50-08:20

1 stop10h 30m

San Sebastián

Sun 26/4

08:55-20:05

1 stop12h 10m

£175

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Sat 21/2

10:45-20:50

1 stop9h 05m

San Sebastián

Wed 25/2

13:40-18:50

1 stop6h 10m

£178

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Thu 8/1

19:05-08:40

1 stop12h 35m

San Sebastián

Mon 12/1

14:05-18:00

1 stop4h 55m

£183

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Thu 12/2

20:50-13:30

1 stop15h 40m

San Sebastián

Sun 15/2

13:40-18:50

1 stop6h 10m

£185

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Sat 21/2

10:45-20:50

1 stop9h 05m

San Sebastián

Tue 24/2

13:40-18:15

1 stop5h 35m

£185

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Thu 8/1

19:40-08:40

1 stop12h 00m

San Sebastián

Sun 11/1

13:40-17:15

1 stop4h 35m

£188

Flights are sorted by cheapest return flights first.

Deals found on 16/11

Showing 1-10 of 23 results
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2
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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, March is the cheapest month in which you can book a flight from London Heathrow Airport to San Sebastian (average of £21). Flying from London Heathrow Airport to San Sebastian in July is currently the most expensive (average of £129). 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.

What is the cheapest time of day to fly from LHR to EAS?

Find hourly flight availability from Heathrow to San Sebastian. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 November 2025.

It’s typically best to fly out from London Heathrow Airport to San Sebastian in the evening. Doing so could potentially save you 31% on the flight price compared to flying at midday, which is usually more expensive.

How much does it cost for a return flight from London Heathrow Airport to San Sebastian?

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 18 November 2025.
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
3,025 reviews
Check prices

Boarding

7.1

Food

6.3

Comfort

6.7

Overall

7.0

Crew

7.7

Entertainment

6.6

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight
Iberia
7.0
Good
3,025 reviews
Iberia
7.0
Good
3,025 reviews
Check prices

Boarding

7.1

Food

6.3

Comfort

6.7

Overall

7.0

Crew

7.7

Entertainment

6.6

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight

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.

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

    Airlines like Iberia fly from London Heathrow Airport to San Sebastian in about 12h. 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 £192. You may be able to fly from London Heathrow Airport to San Sebastian for 34% 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to San Sebastian (average of £21). Flying from London Heathrow Airport to San Sebastian in July is currently the most expensive (average of £129). 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 18 November 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£192Average£298FlexibilityNo 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?

Cheapflights helps you search for flights from Heathrow to San Sebastian via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights simply makes it quick and affordable to book flights from Heathrow to San Sebastian by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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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