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Cheap flights from Chicago to Bilbao from $321

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Bilbao departing on 8/4. 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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0 bags

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Find the cheapest flights from Chicago to Bilbao

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
8:25 pm - 6:35 pm
ORD
-
BIO
15h 10m
1 stop
TAP AIR PORTUGAL Logo
6:40 pm - 3:00 pm
BIO
-
ORD
27h 20m
1 stop
$462TAP AIR PORTUGAL
Sun, Feb 15 - Tue, Mar 3
Turkish Airlines Logo
8:10 pm - 11:10 am
ORD
-
BIO
32h 00m
1 stop
Turkish Airlines Logo
6:15 pm - 9:40 am
BIO
-
ORD
22h 25m
1 stop
$553Turkish Airlines
Thu, Apr 2 - Thu, Apr 9
Turkish Airlines Logo
11:50 am - 4:10 pm
ORD
-
BIO
21h 20m
1 stop
Turkish Airlines Logo
5:10 pm - 7:25 pm
BIO
-
ORD
32h 15m
1 stop
$558Turkish Airlines
Wed, Mar 4 - Wed, Mar 11
Turkish Airlines Logo
8:20 pm - 4:10 pm
ORD
-
BIO
36h 50m
1 stop
Turkish Airlines Logo
12:00 pm - 11:05 am
BIO
-
ORD
29h 05m
1 stop
$559Turkish Airlines
Tue, Mar 3 - Tue, Mar 10
Lufthansa Logo
9:40 pm - 11:25 pm
ORD
-
BIO
18h 45m
1 stop
Lufthansa Logo
6:50 am - 7:55 pm
BIO
-
ORD
20h 05m
1 stop
$594Lufthansa
Wed, Apr 15 - Sat, Apr 25
Lufthansa Logo
9:40 pm - 11:25 pm
ORD
-
BIO
18h 45m
1 stop
Lufthansa Logo
6:50 am - 7:55 pm
BIO
-
ORD
20h 05m
1 stop
$595Lufthansa
Wed, Apr 15 - Sat, Apr 25
Multiple Airlines Logo
6:30 pm - 3:55 pm
ORD
-
BIO
14h 25m
2 stops
Multiple Airlines Logo
7:45 am - 6:20 pm
BIO
-
ORD
16h 35m
2 stops
$619Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
9:50 pm - 6:05 pm
ORD
-
BIO
13h 15m
1 stop
United Airlines Logo
12:50 pm - 9:05 pm
BIO
-
ORD
14h 15m
1 stop
$624United Airlines
Wed, Mar 4 - Wed, Mar 11
Delta Logo
10:49 am - 11:20 am
MDW
-
BIO
17h 31m
2 stops
Delta Logo
6:50 am - 6:40 pm
BIO
-
MDW
17h 50m
2 stops
$643Delta
Tue, Mar 3 - Tue, Mar 10
Delta Logo
1:26 pm - 11:30 am
MDW
-
BIO
15h 04m
2 stops
Delta Logo
6:50 am - 5:37 pm
BIO
-
MDW
17h 47m
2 stops
$856Delta
Thu, Feb 19 - Mon, Feb 23

Lufthansa flights from Chicago to Bilbao

Our best Lufthansa deals on Chicago to Bilbao flight tickets
Lufthansa
Apr 15
ORD9:40 pmChicago O'Hare Intl
18h 45m
1 stop
BIO11:25 pmBilbao
Apr 25
BIO6:50 amBilbao
20h 05m
1 stop
ORD7:55 pmChicago O'Hare Intl
$594
Lufthansa
Apr 15
ORD9:40 pmChicago O'Hare Intl
18h 45m
1 stop
BIO11:25 pmBilbao
Apr 25
BIO6:50 amBilbao
20h 05m
1 stop
ORD7:55 pmChicago O'Hare Intl
$595
Lufthansa
Mar 4
ORD9:50 pmChicago O'Hare Intl
13h 15m
1 stop
BIO6:05 pmBilbao
Mar 11
BIO11:35 amBilbao
15h 30m
2 stops
ORD9:05 pmChicago O'Hare Intl
$616

United Airlines flights from Chicago to Bilbao

Our best United Airlines deals on Chicago to Bilbao flight tickets
United Airlines
Mar 4
ORD9:50 pmChicago O'Hare Intl
13h 15m
1 stop
BIO6:05 pmBilbao
Mar 11
BIO12:50 pmBilbao
14h 15m
1 stop
ORD9:05 pmChicago O'Hare Intl
$624
United Airlines
Mar 3
ORD1:02 pmChicago O'Hare Intl
14h 48m
2 stops
BIO10:50 amBilbao
Mar 10
BIO6:45 amBilbao
13h 40m
1 stop
ORD2:25 pmChicago O'Hare Intl
$628
United Airlines
Mar 4
ORD1:02 pmChicago O'Hare Intl
14h 48m
2 stops
BIO10:50 amBilbao
Mar 11
BIO7:25 amBilbao
20h 04m
2 stops
ORD9:29 pmChicago O'Hare Intl
$640

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Bilbao 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 February 5, 2026.
Use the filters below to find and compare flights from Chicago to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 2/15

8:25 pm-6:35 pm

1 stop15h 10m

Bilbao

Tue 3/3

6:40 pm-3:00 pm

1 stop27h 20m

$462

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 4/2

8:10 pm-11:10 am

1 stop32h 00m

Bilbao

Thu 4/9

6:15 pm-9:40 am

1 stop22h 25m

$553

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 3/4

11:50 am-4:10 pm

1 stop21h 20m

Bilbao

Wed 3/11

5:10 pm-7:25 pm

1 stop32h 15m

$558

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 3/3

8:20 pm-4:10 pm

1 stop36h 50m

Bilbao

Tue 3/10

12:00 pm-11:05 am

1 stop29h 05m

$559

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 4/15

9:40 pm-11:25 pm

1 stop18h 45m

Bilbao

Sat 4/25

6:50 am-7:55 pm

1 stop20h 05m

$594

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 4/15

9:40 pm-11:25 pm

1 stop18h 45m

Bilbao

Sat 4/25

6:50 am-7:55 pm

1 stop20h 05m

$595

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 3/3

6:30 pm-3:55 pm

2 stops14h 25m

Bilbao

Tue 3/10

7:45 am-6:20 pm

2 stops16h 35m

$619

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 3/4

9:50 pm-6:05 pm

1 stop13h 15m

Bilbao

Wed 3/11

12:50 pm-9:05 pm

1 stop14h 15m

$624

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Tue 3/3

10:49 am-11:20 am

2 stops17h 31m

Bilbao

Tue 3/10

6:50 am-6:40 pm

2 stops17h 50m

$643

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Thu 2/19

1:26 pm-11:30 am

2 stops15h 04m

Bilbao

Mon 2/23

6:50 am-5:37 pm

2 stops17h 47m

$856

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bilbao from

How to get the cheapest flight ticket from Chicago to Bilbao

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 airline that flies from Chicago to Bilbao?

Air France is the most popular carrier operating from Chicago to Bilbao

What airlines fly to Bilbao?

United Airlines, Lufthansa and Iberia are the top three most popular airlines that fly to Bilbao from Chicago according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 4 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

When to book flights from Chicago to Bilbao

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

Cheap Chicago to Bilbao (CHI to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Bilbao

Fastest flight time

11h 55m

Direct flights

None
The fastest flight from Chicago to Bilbao takes 11h 55m
There are no direct flights from Chicago to Bilbao. There are no popular flight routes from Chicago to Bilbao.
Search flight deals

  • How far is Chicago to Bilbao by plane?

    The straight-line distance from Chicago to Bilbao is 4107.8 mi. A reasonable flight in good conditions will take 11h 55m.

  • When did momondo last update prices for flights from Chicago to Bilbao Airport?

    Prices for flights from Chicago to Bilbao Airport were last updated today.

  • How many operators does momondo search for flights from Chicago to Bilbao Airport?

  • How old do you have to be to fly from Chicago to Bilbao Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Bilbao Airport.

  • What documentation or ID do you need to fly to Bilbao Airport?

    The necessary travel and health documents for your Bilbao Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Chicago to Bilbao?

Best airlines flying from Chicago to Bilbao

Compare and see reviews for airlines that fly from Chicago to Bilbao with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $575Free CancellationRating
6.8
7,762 reviews
Search Lufthansa flights
IberiaPriceFrom $656Free CancellationRating
7.0
3,104 reviews
Search Iberia flights
United AirlinesPriceFrom $699Free CancellationRating
7.4
9,241 reviews
Search United Airlines flights

Traveling to a place near Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
Getxo
Laredo
Lekeitio

Why use momondo?

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

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 Chicago to Bilbao for you.

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

Yes. All flights to Bilbao from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Chicago to Bilbao?

Once you have performed a search for Chicago to Bilbao flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Chicago to Bilbao now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bilbao and let you know when they change.

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