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$1,286+ Cheap flights from St. Louis (STL) to San Sebastian (EAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EAS
Mar 10 — Mar 171
Mon 3/10
Mon 3/17
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 March 5, 2025.

Round-trip from

$1,286
(American Airlines)
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 March 5, 2025.

This American Airlines deal was found by Cheapflights users on 3/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1811:39 amSTL - EAS
2 stops19h 21mAmerican Airlines
Fri 3/219:20 amEAS - STL
2 stops18h 47mAmerican Airlines
Deal found 3/5$1,286
This KAYAK deal was found by Cheapflights users on 3/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/131:45 pmSTL - EAS
2 stops16h 15mIberia
Fri 5/231:40 pmEAS - STL
2 stops35h 47mIberia
Deal found 3/5$1,369
This Mytrip deal was found by Cheapflights users on 3/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/183:50 pmSTL - EAS
3 stops33h 45mMultiple Airlines
Fri 3/219:20 amEAS - STL
3 stops35h 46mMultiple Airlines
Deal found 3/5$1,788

Find flights from St. Louis to San Sebastian within your budget

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 March 5, 2025.

Fly from

St. Louis

Fly to

San Sebastian

Route

Depart

Return

Price

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Tue 3/18

11:39 am-1:00 pm

2 stops19h 21m

San Sebastián

Fri 3/21

9:20 am-10:07 pm

2 stops18h 47m

$1,286

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Tue 5/13

1:45 pm-1:00 pm

2 stops16h 15m

San Sebastián

Fri 5/23

1:40 pm-6:27 pm

2 stops35h 47m

$1,369

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Tue 3/18

3:50 pm-7:35 am

3 stops33h 45m

San Sebastián

Fri 3/21

9:20 am-3:06 pm

3 stops35h 46m

$1,788

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

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 March 5, 2025.
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Food

6.5

Entertainment

7.0

Comfort

7.3

Overall

7.2

Crew

8.0

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Food

6.5

Entertainment

7.0

Comfort

7.3

Overall

7.2

Crew

8.0

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

Iberia
7.0
Good
2,641 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Food

6.5

Entertainment

7.0

Comfort

7.3

Overall

7.2

Crew

8.0

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

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.

  • What are the cheapest airlines flying from St. Louis to San Sebastian round-trip?

    Our cheapest airline available from St. Louis to San Sebastian is American Airlines. Our recent data shows that you can find tickets from as low as $1,286 on this airline. An additional option worth looking into is Iberia, starting at $1,369.

  • 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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