STL - EAS

$1,458 Find Cheap Flights from St. Louis to San Sebastian - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$1,458
Typical prices: $892-$1,144
Iberia
Sat 12/8Tue 12/11
STL - EAS • 2 stops
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Flight Deals

Cheap Flights from St. Louis to San Sebastian (STL-EAS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to San Sebastian

Tue, Dec 8 - Fri, Dec 11
Iberia Logo
10:25 am - 8:40 amSTL  Lambert-St Louis-EAS San Sebastián
15h 15m2 stops Dallas/Fort Worth Madrid Barajas
Iberia Logo
9:20 am - 6:49 pmEAS  San Sebastián-STL Lambert-St Louis
16h 29m2 stops Madrid Barajas Chicago O'Hare Intl
$1,458Iberia
Tue, Dec 8 - Fri, Dec 11
British Airways Logo
10:25 am - 1:00 pmSTL  Lambert-St Louis-EAS San Sebastián
19h 35m2 stops Dallas/Fort Worth Madrid Barajas
British Airways Logo
1:40 pm - 10:42 pmEAS  San Sebastián-STL Lambert-St Louis
40h 02m2 stops Madrid Barajas Charlotte Douglas
$1,491British Airways
Tue, Dec 8 - Fri, Dec 11
British Airways Logo
8:43 am - 8:50 pmSTL  Lambert-St Louis-EAS San Sebastián
29h 07m2 stops Dallas/Fort Worth Madrid Barajas
British Airways Logo
9:30 pm - 8:27 pmEAS  San Sebastián-STL Lambert-St Louis
29h 57m2 stops Madrid Barajas Dallas/Fort Worth
$1,629British Airways
Booking Insights

Price, demand and travel trends for St. Louis to San Sebastian flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from St. Louis to San Sebastian?

Round-trip flights from St. Louis to San Sebastian typically range from $892 to $1,144. The lowest price found in the past 5 days was $1,458, on Iberia.

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Key details for St. Louis to San Sebastian flights

Cheapest flight

$1,458
Round-trip flight from St. Louis to San Sebastian

When to book flights from St. Louis to San Sebastian

Are your dates flexible? Find out the best times to travel from St. Louis to San Sebastian based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to San Sebastian flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Do I need a passport to fly from St. Louis to San Sebastian?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from St. Louis to San Sebastian changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $1,458 to $1,629. That means the highest observed fare was about 11% higher than the lowest one.

  • What car rental options are available at San Sebastián Airport (EAS)?

    San Sebastián Airport (EAS) hosts 5 major car rental companies, with daily rates averaging $55 for economy cars. Top options include:

    • Enterprise Rent-A-Car
    • Hertz
    • Alamo
    • keddy by Europcar
    • Dollar

  • Which airports can I use when flying from St. Louis to San Sebastian?

    Flights from St. Louis to San Sebastian usually depart from Lambert-St Louis (STL) and arrive at San Sebastián (EAS).

  • Can I save money by using flexible dates for flights from St. Louis to San Sebastian?

    Yes. Flexible dates can save you up to 23% on flights from St. Louis to San Sebastian. Sunday is the cheapest departure day at $892 round-trip on average, while Monday is the most expensive at $1,144, a difference of $252.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What is the time difference between St. Louis and San Sebastian?

    San Sebastian is 6 hours ahead of St. Louis (Central European Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San Sebastian?

    Some of the most popular sights in San Sebastian are Playa de Zurriola, Kursaal Palace San Sebastián and Palacio de Miramar. These are among the most viewed places in San Sebastian on KAYAK.

Your guide to booking St. Louis to San Sebastian flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure and avoid flying on Monday. On this route, Sunday flights average $892, about $252 less than Monday fares (22% savings) based on the last 12 months.

More options for your flight from St. Louis to San Sebastian

Complete your trip to San Sebastian with a hotel stay or car rental

Car rentals in San Sebastian
Hotels in San Sebastian
Vacations in San Sebastian