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San Sebastian

$548+ Cheap flights from St. Louis (STL) to San Sebastian (EAS)

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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EAS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from St. Louis to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) 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 June 12, 2025.

Round-trip from

$3,573
(AranGrant)

One-way from

$548
(American Airlines)
From Lambert-St Louis to San Sebastián
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One-way flight from Lambert-St Louis to San Sebastián
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Find flight deals from St. Louis to San Sebastian

Cheapest flights from St. Louis to San Sebastian
Explore the most affordable flight options available from St. Louis to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This AranGrant deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/87:38 pmSTL - EAS
2 stops57h 12mBritish Airways
Tue 7/152:50 pmEAS - STL
2 stops36h 34mBritish Airways
Deal found 6/12$3,573

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis 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 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from St. Louis to San Sebastian that are best for you.

Fly from

St. Louis

Fly to

San Sebastian

Route

Depart

Return

Price

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Tue 7/8

7:38 pm-11:50 am

2 stops57h 12m

San Sebastián

Tue 7/15

2:50 pm-8:24 pm

2 stops36h 34m

$3,573

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Fri 10/17

11:46 am-8:40 am

2 stops13h 54m

$548

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Fri 10/17

4:12 pm-8:40 am

2 stops33h 28m

$556

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from St. Louis to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from St. Louis with our price prediction graph.
Estimated round-trip 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.

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 June 12, 2025.
American Airlines
7.2
Good
10,000 reviews

Food

6.5

Entertainment

6.9

Overall

7.2

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Food

6.5

Entertainment

6.9

Overall

7.2

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.
Iberia
7.0
Good
2,776 reviews
American Airlines
7.2
Good
10,000 reviews

Food

6.5

Entertainment

6.9

Overall

7.2

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.
British Airways
6.6
Okay
7,008 reviews
American Airlines
7.2
Good
10,000 reviews

Food

6.5

Entertainment

6.9

Overall

7.2

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.

Related info for your journey

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

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

    Yes. In addition to deals on St. Louis to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to San Sebastian?

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

  • Can I find deals for business class flights from St. Louis to San Sebastian?

    Yes. Cheapflights offers flight deals from St. Louis 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.

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