How does KAYAK find such low prices on flights from Illinois 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 Illinois to San Sebastian. Visit our flight page for the latest deals!>/a>

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Sebastian from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois 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 Illinois with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois 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 Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$321 CHEAP FLIGHTS from Illinois to San Sebastian

EAS

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Cheap Flights from Illinois to San Sebastian

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois 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.

Round-trip

One-way

Recent round-trip flight deals from Illinois to San Sebastian

Wed, Oct 29 - Wed, Nov 5

9:43 am - 8:40 amSTL-EAS

40h 57m2 stops

9:30 pm - 8:55 pmEAS-STL

30h 25m2 stops

$651Iberia

Find Deal

Tue, Oct 28 - Tue, Nov 4

2:15 pm - 1:00 pmSTL-EAS

16h 45m2 stops

9:20 am - 8:23 pmEAS-STL

18h 03m2 stops

$688American Airlines

Find Deal

Sat, Feb 7 - Sun, Feb 15

11:58 am - 8:40 amSTL-EAS

37h 42m2 stops

9:30 pm - 8:44 amEAS-STL

42h 14m2 stops

$744Iberia

Find Deal

Tue, Oct 7 - Tue, Oct 14

10:11 am - 8:40 amORD-EAS

15h 29m2 stops

9:30 pm - 2:00 pmEAS-ORD

23h 30m2 stops

$779Iberia

Find Deal

Tue, Oct 7 - Tue, Oct 14

10:11 am - 8:40 amORD-EAS

15h 29m2 stops

9:30 pm - 6:50 pmEAS-ORD

28h 20m1 stop

$792Iberia

Find Deal

Fri, Nov 7 - Tue, Nov 11

4:45 pm - 8:50 pmORD-EAS

21h 05m1 stop

9:20 am - 12:37 amEAS-ORD

22h 17m2 stops

$807American Airlines

Find Deal

Fri, Nov 7 - Tue, Nov 11

11:48 am - 8:50 pmORD-EAS

26h 02m2 stops

9:20 am - 10:15 pmEAS-ORD

19h 55m2 stops

$811American Airlines

Find Deal

Mon, Oct 20 - Mon, Nov 3

9:41 am - 8:40 amORD-EAS

15h 59m2 stops

9:30 pm - 2:30 pmEAS-ORD

24h 00m1 stop

$871

Find Deal

Mon, Oct 20 - Mon, Nov 3

10:30 pm - 8:40 amORD-EAS

27h 10m1 stop

9:30 pm - 2:30 pmEAS-ORD

24h 00m1 stop

$875

Find Deal

Tue, Oct 7 - Tue, Oct 14

4:30 pm - 8:50 pmORD-EAS

21h 20m1 stop

9:30 pm - 6:50 pmEAS-ORD

28h 20m1 stop

$879Iberia

Find Deal

Cheapest round-trip

$651

Iberia

Wed 10/29Wed 11/5

STL - EAS • 2 stops

Cheapest one-way

$321

Multiple Airlines

Sun 9/28

ORD - EAS • 3 stops

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We hope you love your trip to San Sebastian!

Useful Info

Cheapest flight	$321

Flight from Chicago to San Sebastian

How does KAYAK find such low prices on flights from Illinois 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 Illinois to San Sebastian.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to San Sebastian?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Sebastian from Illinois 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 Illinois 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 Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois 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 Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Hondarribia

Irun

Everything you need to know for your flight to San Sebastian

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Direct Flights

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Return flight deals

Information on the airport you'll fly into in San Sebastian

San Sebastian (EAS)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

EAS

$321 Find Cheap Flights from Illinois to San Sebastian

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

Cheap Flights from Illinois to San Sebastian

Recent round-trip flight deals from Illinois to San Sebastian

Recent one-way flight deals from Illinois to San Sebastian

Everything you should know

Good to know

FAQs for booking flights from Illinois to San Sebastian

How does KAYAK find such low prices on flights from Illinois 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 Illinois to San Sebastian.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Sebastian from Illinois 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 Illinois 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 Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois 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 Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near San Sebastian?

Everything you need to know for your flight to San Sebastian

Information on the airport you'll fly into in San Sebastian

Cabin class types available on flights to Illinois

Complete your trip to San Sebastian with a hotel stay or car rental

Find direct flights for San Sebastian

Flights to other popular destinations

Flights from domestic origins to San Sebastian

Choose which airport to fly into in San Sebastian

Find deals for your return flight