$939+ Cheap flights from Missouri 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EAS
Nov 13 — Nov 201
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Missouri to San Sebastian
Keep the following information in mind while searching for Missouri to San Sebastian flight deals. Data was last updated October 14, 2025.
Most accurate provider | Expedia 2 stars |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $939 (American Airlines) |
Find flight deals from Missouri to San Sebastian
Cheapest flights from Missouri to San SebastianExplore the most affordable flight options available from Missouri to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.
Explore the most affordable flight options available from Missouri to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.
This American Airlines deal was found by Cheapflights users on 10/11. 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.
Fri 11/78:39 amSTL - EAS
2 stops29h 11mAmerican Airlines
Tue 11/111:40 pmEAS - STL
2 stops39h 47mAmerican Airlines
Deal found 10/11![American Airlines logo]()
$939
Cheapflights Fare Finder
Customize your flight search to find flights from Missouri 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 October 14, 2025.
Use the filters below to find and compare flights from Missouri to San Sebastian that are best for you.
Fly from
Missouri
Fly to
San Sebastian
Route
Depart
Return
Price
St. LouisSan Sebastian
STL - EAS
STLEAS
Lambert-St Louis
Fri 11/7
8:39 am-8:50 pm
2 stops29h 11m
San Sebastián
Tue 11/11
1:40 pm-10:27 pm
2 stops39h 47m
$939
Best time to book a flight from Missouri to San Sebastian
Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Missouri 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.
Cheapflights Insights
Everything you need to know about your flight from Missouri to San Sebastian
What is the cheapest time of day to fly from MO to EAS?
Find hourly flight availability from Missouri 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 October 14, 2025.
When flying from Missouri to San Sebastian, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 31% versus a flight in the evening.