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San Sebastian

$1,227+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EAS
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
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 April 4, 2025.

Round-trip from

$1,227
(KAYAK)
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 April 4, 2025.

This KAYAK deal was found by Cheapflights users on 4/4. 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 5/131:38 pmSTL - EAS
2 stops16h 22mIberia
Fri 5/239:20 amEAS - STL
2 stops19h 32mIberia
Deal found 4/4$1,227

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 April 4, 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 5/13

1:38 pm-1:00 pm

2 stops16h 22m

San Sebastián

Fri 5/23

9:20 am-9:52 pm

2 stops19h 32m

$1,227

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

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 April 4, 2025.
Iberia
7.0
Good
2,659 reviews

Overall

7.0

Comfort

6.7

Boarding

7.1

Crew

7.6

Entertainment

6.6

Food

6.3

Reviews

1 / 20
10.0
Excellent

Tiago,Mar 2025

GRU - MAD

Boarding was super bad. Did the queue and in the end had to wait for someone to validate my passport (and my friends too) no explanation, in the end the person that sent me to other colleague had to do it so completely non sense. Stewards not smiling or helpful. Had the impression that we were bothering them. Food was almost thrown away like animals and not enough. For a 10h flight during night it could be nice to offer a little more food or snacks for those who don’t sleep. With Iberia quality is not to be expected unfortunately. Reviewing options for future flights.
Iberia
7.0
Good
2,659 reviews
Iberia
7.0
Good
2,659 reviews

Overall

7.0

Comfort

6.7

Boarding

7.1

Crew

7.6

Entertainment

6.6

Food

6.3

Reviews

1 / 20
10.0
Excellent

Tiago,Mar 2025

GRU - MAD

Boarding was super bad. Did the queue and in the end had to wait for someone to validate my passport (and my friends too) no explanation, in the end the person that sent me to other colleague had to do it so completely non sense. Stewards not smiling or helpful. Had the impression that we were bothering them. Food was almost thrown away like animals and not enough. For a 10h flight during night it could be nice to offer a little more food or snacks for those who don’t sleep. With Iberia quality is not to be expected unfortunately. Reviewing options for future flights.

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 is the cheapest airline to fly from St. Louis to San Sebastian round-trip?

    Our cheapest airline available from St. Louis to San Sebastian is Iberia. Our recent data shows that you can find tickets from as low as $1,227 on this airline.

  • 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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