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Cheap flights from Chicago O'Hare Intl Airport to San Sebastian from $687

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to San Sebastian departing on 1/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago O'Hare Intl Airport to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:20 pm - 8:50 pmORD-EAS
18h 30m2 stops
Multiple Airlines Logo
9:20 am - 4:45 pmEAS-ORD
38h 25m2 stops
$687Multiple Airlines
Find Deal
Thu, Jan 29 - Sun, Feb 1
American Airlines Logo
5:40 pm - 1:00 pmORD-EAS
12h 20m1 stop
American Airlines Logo
9:20 am - 8:10 pmEAS-ORD
17h 50m2 stops
$726American Airlines
Find Deal
Tue, Jan 27 - Sun, Feb 1
American Airlines Logo
7:00 am - 8:40 amORD-EAS
18h 40m2 stops
American Airlines Logo
9:20 am - 8:10 pmEAS-ORD
17h 50m2 stops
$731American Airlines
Find Deal
Tue, Jan 27 - Sun, Feb 1
Iberia Logo
5:40 pm - 8:50 pmORD-EAS
20h 10m1 stop
Iberia Logo
9:20 am - 2:55 pmEAS-ORD
12h 35m1 stop
$741Iberia
Find Deal
Tue, Jan 27 - Sun, Feb 1
American Airlines Logo
8:12 am - 8:40 amORD-EAS
17h 28m2 stops
American Airlines Logo
9:20 am - 2:55 pmEAS-ORD
12h 35m1 stop
$746American Airlines
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Wed, Jan 28 - Sun, Feb 1
Multiple Airlines Logo
6:30 pm - 1:30 pmORD-EAS
36h 00m3 stops
Multiple Airlines Logo
2:05 pm - 5:20 pmEAS-ORD
34h 15m3 stops
$755Multiple Airlines
Find Deal
Thu, Jan 29 - Sun, Feb 1
Iberia Logo
5:40 pm - 1:00 pmORD-EAS
12h 20m1 stop
Iberia Logo
9:20 am - 2:55 pmEAS-ORD
12h 35m1 stop
$758Iberia
Find Deal
Thu, Feb 5 - Sun, Feb 8
Iberia Logo
11:52 am - 1:00 pmORD-EAS
18h 08m2 stops
Iberia Logo
9:20 am - 2:55 pmEAS-ORD
12h 35m1 stop
$771Iberia
Find Deal
Wed, Jan 28 - Sun, Feb 1
Multiple Airlines Logo
10:27 am - 1:30 pmORD-EAS
44h 03m3 stops
Multiple Airlines Logo
2:05 pm - 11:37 pmEAS-ORD
40h 32m3 stops
$774Multiple Airlines
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Thu, Feb 5 - Sun, Feb 8
American Airlines Logo
5:40 pm - 1:00 pmORD-EAS
12h 20m1 stop
American Airlines Logo
9:20 am - 8:10 pmEAS-ORD
17h 50m2 stops
$776American Airlines
Find Deal
Thu, Jan 29 - Sun, Feb 1

American Airlines flights from Chicago O'Hare Intl Airport to San Sebastian

Our best American Airlines deals on Chicago O'Hare Intl Airport to San Sebastian flight tickets
American Airlines
Jan 27
ORD5:40 pmChicago O'Hare Intl
12h 20m
1 stop
EAS1:00 pmSan Sebastián
Feb 1
EAS9:20 amSan Sebastián
17h 50m
2 stops
ORD8:10 pmChicago O'Hare Intl
$726
Find similar
American Airlines
Jan 27
ORD7:00 amChicago O'Hare Intl
18h 40m
2 stops
EAS8:40 amSan Sebastián
Feb 1
EAS9:20 amSan Sebastián
17h 50m
2 stops
ORD8:10 pmChicago O'Hare Intl
$731
Find similar
American Airlines
Jan 28
ORD8:12 amChicago O'Hare Intl
17h 28m
2 stops
EAS8:40 amSan Sebastián
Feb 1
EAS9:20 amSan Sebastián
12h 35m
1 stop
ORD2:55 pmChicago O'Hare Intl
$746
Find similar

Iberia flights from Chicago O'Hare Intl Airport to San Sebastian

Our best Iberia deals on Chicago O'Hare Intl Airport to San Sebastian flight tickets
Iberia
Jan 27
ORD5:40 pmChicago O'Hare Intl
20h 10m
1 stop
EAS8:50 pmSan Sebastián
Feb 1
EAS9:20 amSan Sebastián
12h 35m
1 stop
ORD2:55 pmChicago O'Hare Intl
$741
Find similar
Iberia
Feb 5
ORD5:40 pmChicago O'Hare Intl
12h 20m
1 stop
EAS1:00 pmSan Sebastián
Feb 8
EAS9:20 amSan Sebastián
12h 35m
1 stop
ORD2:55 pmChicago O'Hare Intl
$758
Find similar
Iberia
Jan 28
ORD11:52 amChicago O'Hare Intl
18h 08m
2 stops
EAS1:00 pmSan Sebastián
Feb 1
EAS9:20 amSan Sebastián
12h 35m
1 stop
ORD2:55 pmChicago O'Hare Intl
$771
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 November 6, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport 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

Thu 1/29

7:20 pm-8:50 pm

2 stops18h 30m

San Sebastián

Sun 2/1

9:20 am-4:45 pm

2 stops38h 25m

$687

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 1/27

5:40 pm-1:00 pm

1 stop12h 20m

San Sebastián

Sun 2/1

9:20 am-8:10 pm

2 stops17h 50m

$726

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 1/27

7:00 am-8:40 am

2 stops18h 40m

San Sebastián

Sun 2/1

9:20 am-8:10 pm

2 stops17h 50m

$731

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 1/27

5:40 pm-8:50 pm

1 stop20h 10m

San Sebastián

Sun 2/1

9:20 am-2:55 pm

1 stop12h 35m

$741

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 1/28

8:12 am-8:40 am

2 stops17h 28m

San Sebastián

Sun 2/1

9:20 am-2:55 pm

1 stop12h 35m

$746

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Thu 1/29

6:30 pm-1:30 pm

3 stops36h 00m

San Sebastián

Sun 2/1

2:05 pm-5:20 pm

3 stops34h 15m

$755

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Thu 2/5

5:40 pm-1:00 pm

1 stop12h 20m

San Sebastián

Sun 2/8

9:20 am-2:55 pm

1 stop12h 35m

$758

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 1/28

11:52 am-1:00 pm

2 stops18h 08m

San Sebastián

Sun 2/1

9:20 am-2:55 pm

1 stop12h 35m

$771

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Thu 2/5

10:27 am-1:30 pm

3 stops44h 03m

San Sebastián

Sun 2/8

2:05 pm-11:37 pm

3 stops40h 32m

$774

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Thu 1/29

5:40 pm-1:00 pm

1 stop12h 20m

San Sebastián

Sun 2/1

9:20 am-8:10 pm

2 stops17h 50m

$776

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to San Sebastian from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport 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.

When to book flights from Chicago O'Hare Intl Airport to San Sebastian

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to San Sebastian according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to San Sebastian (ORD to EAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to San Sebastian

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to San Sebastian. There are no popular flight routes from Chicago O'Hare Intl Airport to San Sebastian.
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  • How far is Chicago O'Hare Intl to San Sebastián by plane?

    The distance between Chicago O'Hare Intl and San Sebastián is about 4155.4 mi. Flights usually cover this in 12h 20m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Sebastián Airport?

    Prices for flights from Chicago O'Hare Intl Airport to San Sebastián Airport were last updated today.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to San Sebastián Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to San Sebastián Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport 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.

  • What is the most popular airline from Chicago O'Hare Intl Airport to San Sebastian?

Best airlines flying from Chicago O'Hare Intl Airport to San Sebastian

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to San Sebastian with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $694Free CancellationRating
7.2
11,042 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
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Hondarribia

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Sebastian from Chicago.

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

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

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

Once all potential Chicago to San Sebastian flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to San Sebastian, momondo offers a useful price alert feature which will track prices for flights to San Sebastian from Chicago and alert you when they change.

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