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Cheap flights from Illinois to San Sebastian from $276

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to San Sebastian departing on 4/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
9:35 pm - 8:40 am
ORD
-
EAS
29h 05m
2 stops
Iberia Logo
9:30 pm - 6:55 pm
EAS
-
ORD
27h 25m
2 stops
$527Iberia
mar., mar. 17 - lun., mar. 23
Iberia Logo
6:40 pm - 8:40 am
ORD
-
EAS
32h 00m
1 stop
Iberia Logo
9:30 pm - 6:55 pm
EAS
-
ORD
27h 25m
2 stops
$539Iberia
mar., mar. 17 - lun., mar. 23
American Airlines Logo
8:12 am - 8:40 am
ORD
-
EAS
17h 28m
2 stops
American Airlines Logo
9:20 am - 8:10 pm
EAS
-
ORD
17h 50m
2 stops
$583American Airlines
mié., ene. 28 - dom., feb. 1
American Airlines Logo
7:10 am - 8:40 am
ORD
-
EAS
18h 30m
2 stops
American Airlines Logo
9:20 am - 2:55 pm
EAS
-
ORD
12h 35m
1 stop
$636American Airlines
jue., feb. 12 - jue., feb. 19
American Airlines Logo
11:52 am - 8:40 am
ORD
-
EAS
13h 48m
2 stops
American Airlines Logo
9:20 am - 8:10 pm
EAS
-
ORD
17h 50m
2 stops
$646American Airlines
mié., ene. 28 - dom., feb. 1
Iberia Logo
6:40 pm - 8:40 am
ORD
-
EAS
32h 00m
1 stop
Iberia Logo
9:30 pm - 4:14 pm
EAS
-
ORD
24h 44m
1 stop
$663Iberia
mar., mar. 17 - lun., mar. 23
American Airlines Logo
4:30 pm - 8:50 pm
ORD
-
EAS
21h 20m
1 stop
American Airlines Logo
9:20 am - 9:11 pm
EAS
-
ORD
18h 51m
2 stops
$684American Airlines
lun., mar. 30 - mié., abr. 8
American Airlines Logo
11:40 am - 8:40 am
ORD
-
EAS
14h 00m
2 stops
American Airlines Logo
9:20 am - 9:11 pm
EAS
-
ORD
18h 51m
2 stops
$688American Airlines
lun., mar. 30 - mié., abr. 8
Iberia Logo
8:35 pm - 8:40 am
ORD
-
EAS
29h 05m
2 stops
Iberia Logo
9:20 am - 2:55 pm
EAS
-
ORD
12h 35m
1 stop
$690Iberia
vie., feb. 27 - vie., mar. 6
Iberia Logo
1:34 pm - 1:00 pm
ORD
-
EAS
16h 26m
2 stops
Iberia Logo
9:20 am - 2:55 pm
EAS
-
ORD
12h 35m
1 stop
$698Iberia
mié., ene. 28 - dom., feb. 1

American Airlines flights from Illinois to San Sebastian

Our best American Airlines deals on Illinois to San Sebastian flight tickets
American Airlines
Jan 28
ORD8:12 amChicago O'Hare Intl
17h 28m
2 stops
EAS8:40 amSan Sebastián
Feb 1
EAS9:20 amSan Sebastián
17h 50m
2 stops
ORD8:10 pmChicago O'Hare Intl
$583
American Airlines
Mar 17
ORD10:28 amChicago O'Hare Intl
16h 12m
2 stops
EAS8:40 amSan Sebastián
Mar 23
EAS9:30 pmSan Sebastián
24h 44m
1 stop
ORD4:14 pmChicago O'Hare Intl
$597
American Airlines
Feb 12
ORD7:10 amChicago O'Hare Intl
18h 30m
2 stops
EAS8:40 amSan Sebastián
Feb 19
EAS9:20 amSan Sebastián
12h 35m
1 stop
ORD2:55 pmChicago O'Hare Intl
$636

Iberia flights from Illinois to San Sebastian

Our best Iberia deals on Illinois to San Sebastian flight tickets
Iberia
Mar 17
ORD9:35 pmChicago O'Hare Intl
29h 05m
2 stops
EAS8:40 amSan Sebastián
Mar 23
EAS9:30 pmSan Sebastián
27h 25m
2 stops
ORD6:55 pmChicago O'Hare Intl
$527
Iberia
Mar 17
ORD6:40 pmChicago O'Hare Intl
32h 00m
1 stop
EAS8:40 amSan Sebastián
Mar 23
EAS9:30 pmSan Sebastián
27h 25m
2 stops
ORD6:55 pmChicago O'Hare Intl
$539
Iberia
Mar 17
ORD6:40 pmChicago O'Hare Intl
32h 00m
1 stop
EAS8:40 amSan Sebastián
Mar 23
EAS9:30 pmSan Sebastián
24h 44m
1 stop
ORD4:14 pmChicago O'Hare Intl
$663

momondo Fare Finder

 
Customize your flight search to find flights from Illinois 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, momondo users made 832,500 searches. Data last updated enero 15, 2026.
Use the filters below to find and compare flights from Illinois to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

mar. 3/17

9:35 pm-8:40 am

2 stops29h 05m

San Sebastián

lun. 3/23

9:30 pm-6:55 pm

2 stops27h 25m

$527

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

mar. 3/17

6:40 pm-8:40 am

1 stop32h 00m

San Sebastián

lun. 3/23

9:30 pm-6:55 pm

2 stops27h 25m

$539

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

mié. 1/28

8:12 am-8:40 am

2 stops17h 28m

San Sebastián

dom. 2/1

9:20 am-8:10 pm

2 stops17h 50m

$583

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

jue. 2/12

7:10 am-8:40 am

2 stops18h 30m

San Sebastián

jue. 2/19

9:20 am-2:55 pm

1 stop12h 35m

$636

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

mié. 1/28

11:52 am-8:40 am

2 stops13h 48m

San Sebastián

dom. 2/1

9:20 am-8:10 pm

2 stops17h 50m

$646

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

mar. 3/17

6:40 pm-8:40 am

1 stop32h 00m

San Sebastián

lun. 3/23

9:30 pm-4:14 pm

1 stop24h 44m

$663

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

lun. 3/30

4:30 pm-8:50 pm

1 stop21h 20m

San Sebastián

mié. 4/8

9:20 am-9:11 pm

2 stops18h 51m

$684

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

lun. 3/30

11:40 am-8:40 am

2 stops14h 00m

San Sebastián

mié. 4/8

9:20 am-9:11 pm

2 stops18h 51m

$688

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

vie. 2/27

8:35 pm-8:40 am

2 stops29h 05m

San Sebastián

vie. 3/6

9:20 am-2:55 pm

1 stop12h 35m

$690

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

mié. 1/28

1:34 pm-1:00 pm

2 stops16h 26m

San Sebastián

dom. 2/1

9:20 am-2:55 pm

1 stop12h 35m

$698

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to San Sebastian from

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

What airlines fly to San Sebastian?

Lufthansa, Iberia and United Airlines are the top three most popular airlines that fly to San Sebastian from Illinois according to our data. Lufthansa is the first choice among our users, with 30% 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.

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

Fastest flight time

13h 30m

Direct flights

None
The fastest flight from Illinois to San Sebastian takes 13h 30m
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?

  • 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 AirlinesPriceFrom $694Free CancellationRating
7.2
11,129 reviews
Search American Airlines flights

Traveling to a place near San Sebastian?

Book flights to San Sebastian if you plan to visit one of these locations
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.

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