ORD - EAS

$533 Find Cheap Flights from Chicago to San Sebastian

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to San Sebastian departing on 3/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Sebastian

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to San Sebastian, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to San Sebastian, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$533
Iberia
zo 3/1di 3/17
ORD - EAS • 1 stop
Cheapest one-way
$701
Multiple Airlines
za 5/2
ORD - EAS • 2 stops
Top airlines
Iberia
Cheapest • from $533 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to San Sebastian!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Chicago to San Sebastian (ORD-EAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to San Sebastian that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to San Sebastian

zo, mrt. 1 - di, mrt. 17
Iberia Logo
5:40 pm - 8:50 pm
ORD
-
EAS
20h 10m
1 stop
Iberia Logo
9:30 pm - 4:14 pm
EAS
-
ORD
24h 44m
1 stop
$533Iberia
zo, mrt. 8 - zo, mrt. 15
Iberia Logo
7:20 pm - 1:00 pm
ORD
-
EAS
11h 40m
1 stop
Iberia Logo
9:30 pm - 4:25 pm
EAS
-
ORD
48h 55m
2 stops
$541Iberia
zo, mrt. 1 - di, mrt. 17
Multiple Airlines Logo
5:40 pm - 8:50 pm
ORD
-
EAS
20h 10m
1 stop
Multiple Airlines Logo
9:20 am - 7:45 pm
EAS
-
ORD
16h 25m
2 stops
$551Multiple Airlines
zo, apr. 12 - ma, apr. 20
Multiple Airlines Logo
10:15 pm - 8:40 am
ORD
-
EAS
27h 25m
1 stop
Multiple Airlines Logo
9:30 pm - 2:15 pm
EAS
-
ORD
23h 45m
1 stop
$568Multiple Airlines
zo, apr. 12 - zo, apr. 19
American Airlines Logo
8:38 am - 8:40 am
ORD
-
EAS
17h 02m
2 stops
American Airlines Logo
9:20 am - 2:15 pm
EAS
-
ORD
11h 55m
1 stop
$573American Airlines
zo, mrt. 8 - zo, mrt. 15
Iberia Logo
6:40 pm - 1:00 pm
ORD
-
EAS
12h 20m
1 stop
Iberia Logo
9:30 pm - 4:14 pm
EAS
-
ORD
24h 44m
1 stop
$579Iberia
zo, apr. 12 - zo, apr. 19
American Airlines Logo
8:38 am - 8:40 am
ORD
-
EAS
17h 02m
2 stops
American Airlines Logo
1:40 pm - 12:27 am
EAS
-
ORD
17h 47m
2 stops
$583American Airlines
zo, mrt. 1 - di, mrt. 17
Iberia Logo
3:50 pm - 1:00 pm
ORD
-
EAS
14h 10m
2 stops
Iberia Logo
9:30 pm - 9:30 pm
EAS
-
ORD
30h 00m
2 stops
$611Iberia
zo, apr. 12 - za, apr. 18
Multiple Airlines Logo
10:15 pm - 8:40 am
ORD
-
EAS
27h 25m
1 stop
Multiple Airlines Logo
9:30 pm - 2:15 pm
EAS
-
ORD
23h 45m
1 stop
$620Multiple Airlines
za, apr. 11 - ma, apr. 20
Multiple Airlines Logo
4:30 pm - 8:40 am
ORD
-
EAS
33h 10m
1 stop
Multiple Airlines Logo
9:30 pm - 2:15 pm
EAS
-
ORD
23h 45m
1 stop
$621Multiple Airlines
Booking Insights

KAYAK's insights & trends for Chicago to San Sebastian flights

Get data-powered insights and trends into flights from Chicago to San Sebastian to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Chicago to San Sebastian?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Chicago to San Sebastian were found on Iberia ($533) and American Airlines ($573).

Good to know

Cheapest flight$533
Flight from Chicago to San Sebastian

When to book flights from Chicago to San Sebastian

Are your dates flexible? Find out the best times to travel from Chicago 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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago to San Sebastian flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to San Sebastian?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to San Sebastian was $701 for a one-way ticket and $533 for a round-trip.

  • Do I need a passport to fly between Chicago and San Sebastian?

    Yes, you’ll need a passport to travel to San Sebastian from Chicago.

  • Which aircraft models fly most regularly from Chicago to San Sebastian?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Chicago to San Sebastian?

    oneworld is the only airline alliance operating flights between Chicago and San Sebastian.

  • How does KAYAK find such low prices on flights from Chicago to San Sebastian?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to San Sebastian.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to San Sebastian?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Sebastian from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to San Sebastian?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Sebastian with an airline and back to Chicago with another airline. Booking your flights between Chicago and EAS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to San Sebastian?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Sebastian from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Chicago to San Sebastian

 
See real verified KAYAK customer reviews for airlines flying from Chicago to San Sebastian. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to San Sebastian? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11174 reviews
7.5Boarding
6.4Food
7.2Comfort
6.9Entertainment
8.0Crew
Airline reviews

Crew in Columbia was not prepared for landing. It was a bit of a disaster and getting bags took forever.

4.0 OkayBrooke, Jan 2026
ORD - CLT
Read more American Airlines reviews

Crew in Columbia was not prepared for landing. It was a bit of a disaster and getting bags took forever.

We were upgraded to First Class and it was a great flight

We experienced gate changes and a long delay. My seat was dirty when I boarded and I had to use wipes to clean it myself. There was an unpleasant and overpowering cleaning product scent on the plane as well that lingered through the flight.

My carry on baggage was damaged. Entire trip, I had to carry the baggage. When complained to the boarding crew, they got mad at me and still asked me to valet check in the cabin baggage. Rude boarding crew!!!

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

The boarding by groups is pointless. The first two groups worked fine, but almost Noone boarded in goups three thru five leaving the vast majority boarding when group six was called. It defeated the purpose of spreading out the crowd.

We loved the steward on the plane. He made the night enjoyable

The plane was late, when we did board the plane was as cold as a freezer. I was freezing the entire flight, no blankets. Lost miserable flight I’ve ever had.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Everything you need to know for your flight from Chicago to San Sebastian

Information on your arrival and departure airports