What is the cheapest day to fly from St. Louis to San Sebastian?

Travelers seeking maximum savings on their St. Louis to San Sebastian flight should consider departing on Wednesday mornings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 49% when planning your travel around this day of the week.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to San Sebastian as you normally would.

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.

$548+ Flights from St. Louis to San Sebastian

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Cheap flight deals from St. Louis to San Sebastian

Round-trip from	$977 (American Airlines)
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 30, 2025.

Fri 11/71:45 pmSTL - EAS

2 stops16h 15mAmerican Airlines

Tue 11/111:40 pmEAS - STL

2 stops32h 59mAmerican Airlines

Deal found 6/27

$977

Best flights from St. Louis to San Sebastian
Discover carefully curated flight deals from St. Louis to San Sebastian that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 30, 2025.

Fri 11/71:45 pmSTL - EAS

2 stops16h 15mAmerican Airlines

Tue 11/111:40 pmEAS - STL

2 stops32h 59mAmerican Airlines

Deal found 6/27

$977

One-way flights from St. Louis to San Sebastian
Search for one-way flight options from St. Louis to San Sebastian. Find affordable one-way fares based on user searches. Data last updated June 30, 2025.

Fri 10/179:35 amSTL - EAS

2 stops16h 05mAmerican Airlines

Deal found 6/30

$548

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Fri 11/7

1:45 pm-1:00 pm

2 stops16h 15m

San Sebastián

Tue 11/11

1:40 pm-3:39 pm

2 stops32h 59m

$977

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Fri 10/17

9:35 am-8:40 am

2 stops16h 05m

$548

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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

Read through reviews of airlines operating flights from St. Louis to San Sebastian, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.2

Good

10,000 reviews

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

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

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.

Browse thousands of different options on Cheapflights for your next trip

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$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.

Find cheap flights from St. Louis to San Sebastian with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to San Sebastian

Round-trip from

One-way from

Find flight deals from St. Louis to San Sebastian

Cheapest flights from St. Louis to San SebastianExplore 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 30, 2025.

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 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San Sebastian that are best for you.

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.

Reviews of airlines servicing San Sebastian

Read through reviews of airlines operating flights from St. Louis to San Sebastian, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to San Sebastian

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

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 30, 2025.