ORD - EAS

$354 Find Cheap Flights from Chicago to San Sebastian

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to San Sebastian departing on 7/24. 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

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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Flights 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

Tue, Sep 9 - Thu, Sep 18
Iberia Logo
4:30 pm - 8:50 pmORD-EAS
21h 20m1 stop
Iberia Logo
9:20 am - 2:15 pmEAS-ORD
11h 55m1 stop
$745Iberia
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Tue, Sep 9 - Thu, Sep 18
Iberia Logo
3:21 pm - 1:00 pmORD-EAS
14h 39m2 stops
Iberia Logo
9:20 am - 2:15 pmEAS-ORD
11h 55m1 stop
$750Iberia
Find Deal
Wed, Sep 3 - Tue, Sep 9
American Airlines Logo
7:02 am - 8:40 amORD-EAS
18h 38m2 stops
American Airlines Logo
9:20 am - 9:23 pmEAS-ORD
19h 03m2 stops
$760American Airlines
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Wed, Sep 3 - Tue, Sep 9
 Logo
4:30 pm - 8:40 amORD-EAS
33h 10m1 stop
 Logo
9:30 pm - 2:15 pmEAS-ORD
23h 45m1 stop
Thu, Sep 4 - Tue, Sep 9
American Airlines Logo
8:38 am - 8:40 amORD-EAS
17h 02m2 stops
American Airlines Logo
9:20 am - 9:23 pmEAS-ORD
19h 03m2 stops
$820American Airlines
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Wed, Jul 9 - Wed, Jul 16
 Logo
7:00 pm - 5:20 pmORD-EAS
15h 20m1 stop
 Logo
9:10 am - 11:55 amEAS-ORD
33h 45m2 stops
$1,070
Find Deal
Thu, Sep 4 - Wed, Sep 10
Avianca Logo
2:35 pm - 8:40 amORD-EAS
35h 05m2 stops
Avianca Logo
1:40 pm - 1:15 pmEAS-ORD
30h 35m2 stops
$1,507Avianca
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Thu, Sep 4 - Tue, Sep 9
Avianca Logo
2:35 pm - 8:40 amORD-EAS
35h 05m2 stops
Avianca Logo
9:30 pm - 1:15 pmEAS-ORD
46h 45m2 stops
$1,518Avianca
Find Deal
Sun, Sep 14 - Sun, Sep 21
British Airways Logo
4:30 pm - 8:50 pmORD-EAS
21h 20m1 stop
British Airways Logo
1:40 pm - 6:15 pmEAS-ORD
11h 35m1 stop
$1,834British Airways
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Mon, Sep 15 - Sun, Sep 21
British Airways Logo
4:30 pm - 8:50 pmORD-EAS
21h 20m1 stop
British Airways Logo
1:40 pm - 6:15 pmEAS-ORD
11h 35m1 stop
$1,923British Airways
Find Deal
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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 ($745) and American Airlines ($760).

Good to know

Cheapest flight$354
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 $354 for a one-way ticket and $745 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, and Star Alliance are the airline alliances operating flights between Chicago and San Sebastian, with oneworld being the most commonly used for this route.

  • 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.

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.
7.0
IberiaOverall score based on 2776 reviews
7.1Boarding
7.7Crew
6.8Comfort
6.6Entertainment
6.3Food
Airline reviews

Not having to check carry on bags when plane wasn’t full. (The told us it was)

6.0 GoodAnonymous, May 2025BOS - MAD
Read more Iberia reviews

Not having to check carry on bags when plane wasn’t full. (The told us it was)

Service and food were excellent, could have been more info in English.

I was in business class for the 8 hour flight where: 1. The WiFi did not work 2. The entertainment system did not work 3. We were told there were no hot drinks for the entire flight

I had an issue with the name on my ticket vs my passport name. I was very upset that the Iberia ticket clerk had no authorization to help me and I was left to fix it. It took 19 calls of persons promising to accomplish and not doing anything before I reached someone who helped me in 10 minutes. Two of them even hung up on me. I missed my original flight because of this. Terrible customer service.

Flight boarded three hours late for no reason other than someone made a huge error in crew scheduling. We missed our connecting flight in Madrid and got zero help from American or Iberian airlines on rebooking. We had to pay for a car to take us to the Madrid train station and pay for train tickets to Santiago. We never used our booked flight to Santiago. American claims I can submit the expenses but they are not obligated to cover them. Very frustrating.

Flight delayed Service could be better Iberia staff are not really friendly

They cancelled the flight)(they said bad weather but many other flights took off) and made us wait 5 hours in line to figure out what to do. We ended up making a new flight the next day on another airlines...I hope they honor giving us our money back

Flight from Costa Rica to Madrid was excellent. Good food and service. The flight from Madrid to Brussels was very poor . No food , no entertainment, no usb … Total package was quite expensive so you should give same service on the second flight

We travelled with Level, which is a subsidiary of Iberia. They mixed up all our seats, downgraded few from premium economy fo economy. The crew were not professional, they seem to be in a rush! Also some with an attitude

Paid for “extra room” selected seat. Wasn’t a benefit. Also was in aisle and was bumped almost every time attendants walked down aisle. Should have saved the assigned seat money and let them select.

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

Information on your arrival and departure airports

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