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Cheap flights from London Heathrow Airport to San Sebastian from £66

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — EAS
23 Jul — 30 Jul1
1 adult

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 July 2025.

Round-trip from

£145

One-way from

£66

Popular in

May

Cheapest in

February

Average price

£278
26/9-30/9
  • 26/9-30/9
  • 3 total stops
  • 33h 20m total
  • London to San Sebastian
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Vueling
  • Vueling
  • 4/10
  • 1 total stop
  • 21h 55m total
  • London to San Sebastian
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£48 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Heathrow to San Sebastian

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 July 2025.

Fri 26/920:50LHR - EAS
1 stop10h 35mMultiple Airlines
Tue 30/911:25EAS - LHR
2 stops22h 45mMultiple Airlines
Deal found 17/7£145
Sat 4/1020:50LHR - EAS
1 stop11h 00mVueling
Tue 7/1013:30EAS - LHR
1 stop7h 35mVueling
Deal found 18/7£154
Wed 24/916:35LHR - EAS
1 stop15h 05mIberia
Sat 27/921:30EAS - LHR
1 stop13h 00mIberia
Deal found 18/7£203

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 July 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

Fri 26/9

20:50-08:25

1 stop10h 35m

San Sebastián

Tue 30/9

11:25-09:10

2 stops22h 45m

£145

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Sat 4/10

20:50-08:50

1 stop11h 00m

San Sebastián

Tue 7/10

13:30-20:05

1 stop7h 35m

£154

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Wed 24/9

16:35-08:40

1 stop15h 05m

San Sebastián

Sat 27/9

21:30-09:30

1 stop13h 00m

£203

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Sat 4/10

09:55-08:50

1 stop21h 55m

£66

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Tue 2/9

06:10-08:40

1 stop25h 30m

£105

LondonSan Sebastian

LHR - EAS

LHREAS

London Heathrow

Thu 14/8

10:50-08:40

1 stop20h 50m

£113

Flights are sorted by cheapest return flights first.

Deals found on 18/7

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 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 July 2025.

It’s typically best to fly out from London Heathrow Airport to San Sebastian in the evening. Doing so could potentially save you 32% on the flight price compared to flying at midday, which is usually more expensive.

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 July 2025.
See what other customers who have flown with Vueling and 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.
Vueling
7.1
Good
1,172 reviews
Check prices

Boarding

7.1

Comfort

6.8

Food

6.1

Entertainment

5.8

Crew

7.6

Overall

7.1

Reviews

1 / 20
4.0
Okay

Nadia,May 2024

FCO - BCN

The overhead compartment from my seat broke, and my bag got sent 10 seats over. It was an inconvenience
Vueling
7.1
Good
1,172 reviews
Vueling
7.1
Good
1,172 reviews
Check prices

Boarding

7.1

Comfort

6.8

Food

6.1

Entertainment

5.8

Crew

7.6

Overall

7.1

Reviews

1 / 20
4.0
Okay

Nadia,May 2024

FCO - BCN

The overhead compartment from my seat broke, and my bag got sent 10 seats over. It was an inconvenience
Iberia
7.0
Good
2,842 reviews
Vueling
7.1
Good
1,172 reviews
Check prices

Boarding

7.1

Comfort

6.8

Food

6.1

Entertainment

5.8

Crew

7.6

Overall

7.1

Reviews

1 / 20
4.0
Okay

Nadia,May 2024

FCO - BCN

The overhead compartment from my seat broke, and my bag got sent 10 seats over. It was an inconvenience

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 are the cheapest airlines flying from London Heathrow Airport to San Sebastian round-trip?

    Flying on Vueling is currently your cheapest option to San Sebastian, with prices starting at £154. Another option worth looking into is Iberia, starting at £203 return. You may be able to fly from London Heathrow Airport to San Sebastian for 41% less than the average price by searching for these airlines.

  • 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

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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 July 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£180Average£287FlexibilityNo 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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