What airlines fly to San Sebastian?

Iberia, United Airlines and Lufthansa are the top three most popular airlines that fly to San Sebastian from Illinois according to our data. Iberia is the first choice among our users, with 36% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 4 different airlines that fly to San Sebastian on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Illinois to San Sebastián Airport?

Prices for flights from Illinois to San Sebastián Airport were last updated today.

How many operators does momondo search for flights from Illinois to San Sebastián Airport?

The number of operators available for flights from Illinois to San Sebastián Airport is 1 as of August 2025.

How old do you have to be to fly from Illinois 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 Illinois to San Sebastián Airport.

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

The required travel and health documents for your San Sebastián Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Sebastián Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$691 Cheap Flights from Illinois to San Sebastian in 2025

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Find the cheapest flights from Illinois to San Sebastian

Round-trip

One-way

Cheap round-trip flights

4:45 pm - 1:00 pmORD-EAS

13h 15m1 stop

9:20 am - 7:36 pmEAS-ORD

17h 16m2 stops

$726Iberia

Find Deal

vie., nov. 7 - mar., nov. 11

4:45 pm - 1:00 pmORD-EAS

13h 15m1 stop

9:20 am - 7:36 pmEAS-ORD

17h 16m2 stops

$727Iberia

Find Deal

vie., nov. 7 - mar., nov. 11

6:45 pm - 8:50 pmORD-EAS

19h 05m2 stops

9:20 am - 7:36 pmEAS-ORD

17h 16m2 stops

$730Iberia

Find Deal

vie., nov. 7 - mar., nov. 11

8:38 am - 8:40 amORD-EAS

17h 02m2 stops

9:20 am - 9:19 pmEAS-ORD

18h 59m2 stops

$731American Airlines

Find Deal

jue., oct. 2 - jue., oct. 9

9:35 am - 1:00 pmSTL-EAS

21h 25m2 stops

9:20 am - 11:56 pmEAS-STL

21h 36m2 stops

$731American Airlines

Find Deal

vie., oct. 31 - vie., nov. 7

4:30 pm - 1:00 pmORD-EAS

13h 30m1 stop

9:20 am - 7:45 pmEAS-ORD

17h 25m2 stops

$776American Airlines

Find Deal

sáb., oct. 4 - sáb., oct. 11

9:47 am - 8:50 pmSTL-EAS

28h 03m2 stops

1:40 pm - 8:55 pmEAS-STL

38h 15m2 stops

$780Iberia

Find Deal

vie., nov. 7 - mar., nov. 11

8:37 am - 8:40 amORD-EAS

17h 03m2 stops

9:20 am - 9:19 pmEAS-ORD

18h 59m2 stops

$781American Airlines

Find Deal

sáb., oct. 4 - sáb., oct. 11

4:45 pm - 1:00 pmORD-EAS

13h 15m1 stop

9:20 am - 2:30 pmEAS-ORD

12h 10m1 stop

$790Iberia

Find Deal

vie., nov. 7 - mar., nov. 11

6:00 pm - 8:25 amORD-EAS

31h 25m3 stops

5:55 pm - 4:10 pmEAS-ORD

29h 15m2 stops

$1,028

Find Deal

jue., oct. 2 - jue., oct. 9

Iberia flights from Illinois to San Sebastian

Our best Iberia deals on Illinois to San Sebastian flight tickets

Iberia

Nov 7

ORD4:45 pmChicago O'Hare Intl

13h 15m

1 stop

EAS1:00 pmSan Sebastián

Nov 11

EAS9:20 amSan Sebastián

17h 16m

2 stops

ORD7:36 pmChicago O'Hare Intl

$726

Find similar

Iberia

Nov 7

ORD4:45 pmChicago O'Hare Intl

13h 15m

1 stop

EAS1:00 pmSan Sebastián

Nov 11

EAS9:20 amSan Sebastián

17h 16m

2 stops

ORD7:36 pmChicago O'Hare Intl

$727

Find similar

Iberia

Nov 7

ORD6:45 pmChicago O'Hare Intl

19h 05m

2 stops

EAS8:50 pmSan Sebastián

Nov 11

EAS9:20 amSan Sebastián

17h 16m

2 stops

ORD7:36 pmChicago O'Hare Intl

$730

Find similar

American Airlines flights from Illinois to San Sebastian

Our best American Airlines deals on Illinois to San Sebastian flight tickets

American Airlines

Oct 2

ORD8:38 amChicago O'Hare Intl

17h 02m

2 stops

EAS8:40 amSan Sebastián

Oct 9

EAS9:20 amSan Sebastián

18h 59m

2 stops

ORD9:19 pmChicago O'Hare Intl

$731

Find similar

American Airlines

Oct 4

ORD4:30 pmChicago O'Hare Intl

13h 30m

1 stop

EAS1:00 pmSan Sebastián

Oct 11

EAS9:20 amSan Sebastián

17h 25m

2 stops

ORD7:45 pmChicago O'Hare Intl

$776

Find similar

American Airlines

Oct 4

ORD8:37 amChicago O'Hare Intl

17h 03m

2 stops

EAS8:40 amSan Sebastián

Oct 11

EAS9:20 amSan Sebastián

18h 59m

2 stops

ORD9:19 pmChicago O'Hare Intl

$781

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

vie. 11/7

4:45 pm-1:00 pm

1 stop13h 15m

San Sebastián

mar. 11/11

9:20 am-7:36 pm

2 stops17h 16m

$726

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

vie. 11/7

4:45 pm-1:00 pm

1 stop13h 15m

San Sebastián

mar. 11/11

9:20 am-7:36 pm

2 stops17h 16m

$727

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

vie. 11/7

6:45 pm-8:50 pm

2 stops19h 05m

San Sebastián

mar. 11/11

9:20 am-7:36 pm

2 stops17h 16m

$730

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

jue. 10/2

8:38 am-8:40 am

2 stops17h 02m

San Sebastián

jue. 10/9

9:20 am-9:19 pm

2 stops18h 59m

$731

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

vie. 10/31

9:35 am-1:00 pm

2 stops21h 25m

San Sebastián

vie. 11/7

9:20 am-11:56 pm

2 stops21h 36m

$731

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

sáb. 10/4

4:30 pm-1:00 pm

1 stop13h 30m

San Sebastián

sáb. 10/11

9:20 am-7:45 pm

2 stops17h 25m

$776

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

vie. 11/7

9:47 am-8:50 pm

2 stops28h 03m

San Sebastián

mar. 11/11

1:40 pm-8:55 pm

2 stops38h 15m

$780

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

sáb. 10/4

8:37 am-8:40 am

2 stops17h 03m

San Sebastián

sáb. 10/11

9:20 am-9:19 pm

2 stops18h 59m

$781

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

vie. 11/7

4:45 pm-1:00 pm

1 stop13h 15m

San Sebastián

mar. 11/11

9:20 am-2:30 pm

1 stop12h 10m

$790

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

jue. 10/2

6:00 pm-8:25 am

3 stops31h 25m

San Sebastián

jue. 10/9

5:55 pm-4:10 pm

2 stops29h 15m

$1,028

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Illinois 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

Prices

Airlines

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 Illinois is on a Friday. momondo users have found tickets for Friday departures for as low as $827. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to San Sebastian for around $1,488.

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

Flying to San Sebastian from Illinois in the morning is the least expensive time of day to depart. momondo users have found prices as low as $962 when looking at flights departing in the morning. Flights to San Sebastian are more costly in the afternoon, with an average ticket price of $1,256. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Illinois to San Sebastian flight deals and tips

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Illinois to San Sebastián Airport?
Prices for flights from Illinois to San Sebastián Airport were last updated today.
How many operators does momondo search for flights from Illinois to San Sebastián Airport?
The number of operators available for flights from Illinois to San Sebastián Airport is 1 as of August 2025.
How old do you have to be to fly from Illinois 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 Illinois to San Sebastián Airport.
What documentation or ID do you need to fly to San Sebastián Airport?
The required travel and health documents for your San Sebastián Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Sebastián Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to San Sebastian

Compare and see reviews for airlines that fly from Illinois to San Sebastian with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $1,039	Free Cancellation	Rating 7.2 10,000 reviews		Search American Airlines flights

Irun

Hondarribia

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to San Sebastian?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to San Sebastian for you.

Can I find flights from Illinois to San Sebastian with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Sebastian from Illinois with this policy.

How can momondo help me find flights from Illinois to San Sebastian?

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

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

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