When did momondo last update prices for flights from Lambert-St Louis Airport to San Sebastián Airport?

Prices for flights from Lambert-St Louis Airport to San Sebastián Airport were last updated today.

How old do you have to be to fly from Lambert-St Louis Airport to San Sebastián Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to San Sebastián Airport.

What documentation or ID do you need to fly to San Sebastián Airport?

The necessary travel and health documents for your San Sebastián Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$741 Cheap Flights from St. Louis to San Sebastian in 2025

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Find the cheapest flights from St. Louis to San Sebastian

Round-trip

One-way

Cheap round-trip flights

11:39 am - 1:00 pmSTL-EAS

18h 21m2 stops

1:40 pm - 8:23 pmEAS-STL

37h 43m2 stops

$741Iberia

Find Deal

Fri, Nov 7 - Tue, Nov 11

9:47 am - 1:00 pmSTL-EAS

20h 13m2 stops

9:30 pm - 8:23 pmEAS-STL

29h 53m2 stops

$779Iberia

Find Deal

Fri, Nov 7 - Tue, Nov 11

4:21 pm - 8:50 pmSTL-EAS

21h 29m2 stops

9:20 am - 10:32 pmEAS-STL

20h 12m2 stops

$931American Airlines

Find Deal

Fri, Nov 7 - Tue, Nov 11

Iberia flights from St. Louis to San Sebastian

Our best Iberia deals on St. Louis to San Sebastian flight tickets

Iberia

Nov 7

STL11:39 amLambert-St Louis

18h 21m

2 stops

EAS1:00 pmSan Sebastián

Nov 11

EAS1:40 pmSan Sebastián

37h 43m

2 stops

STL8:23 pmLambert-St Louis

$741

Find similar

Iberia

Nov 7

STL9:47 amLambert-St Louis

20h 13m

2 stops

EAS1:00 pmSan Sebastián

Nov 11

EAS9:30 pmSan Sebastián

29h 53m

2 stops

STL8:23 pmLambert-St Louis

$779

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Fri 11/7

11:39 am-1:00 pm

2 stops18h 21m

San Sebastián

Tue 11/11

1:40 pm-8:23 pm

2 stops37h 43m

$741

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Fri 11/7

9:47 am-1:00 pm

2 stops20h 13m

San Sebastián

Tue 11/11

9:30 pm-8:23 pm

2 stops29h 53m

$779

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Fri 11/7

4:21 pm-8:50 pm

2 stops21h 29m

San Sebastián

Tue 11/11

9:20 am-10:32 pm

2 stops20h 12m

$931

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from St. Louis to San Sebastian

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to San Sebastian?

On average, the least expensive day to fly to San Sebastian from St. Louis is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $954. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to San Sebastian for around $1,422.

When to book flights from St. Louis to San Sebastian

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to San Sebastian according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to San Sebastian (STL to EAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to San Sebastian

Direct flights	None

There are no direct flights from St. Louis to San Sebastian. There are no popular flight routes from St. Louis to San Sebastian.

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How far is Lambert-St Louis to San Sebastián by plane?
There are 4385.9 mi between Lambert-St Louis and San Sebastián. In terms of flight time, this usually takes a little over 18h 21m.
When did momondo last update prices for flights from Lambert-St Louis Airport to San Sebastián Airport?
Prices for flights from Lambert-St Louis Airport to San Sebastián Airport were last updated today.
How old do you have to be to fly from Lambert-St Louis Airport to San Sebastián Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to San Sebastián Airport.
What documentation or ID do you need to fly to San Sebastián Airport?
The necessary travel and health documents for your San Sebastián Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Irun

Hondarribia

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to San Sebastian?

Finding the right flight to San Sebastian from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Sebastian quick and easy, saving you time and money.

Can I find flights from St. Louis to San Sebastian with flexible booking policies on momondo?

Flights from St. Louis to San Sebastian with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to San Sebastian?

momondo provides multiple filters to help you find the best flight to San Sebastian from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to San Sebastian right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to San Sebastian flights. All you need is a valid email address and we will do the rest; it is that quick and easy.