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Cheap flights from Chicago to Bilbao from $309

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 4/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
6:00 pm - 5:35 pm
ORD
-
BIO
16h 35m
1 stop
TAP AIR PORTUGAL Logo
12:15 pm - 4:00 pm
BIO
-
ORD
34h 45m
1 stop
$452TAP AIR PORTUGAL
Fri, Apr 17 - Thu, Apr 30
Turkish Airlines Logo
8:10 pm - 5:20 pm
ORD
-
BIO
38h 10m
1 stop
Turkish Airlines Logo
12:10 pm - 6:15 pm
BIO
-
ORD
37h 05m
1 stop
$556Turkish Airlines
Tue, Apr 7 - Tue, Apr 14
Turkish Airlines Logo
8:10 pm - 5:20 pm
ORD
-
BIO
38h 10m
1 stop
Turkish Airlines Logo
12:10 pm - 9:40 am
BIO
-
ORD
28h 30m
1 stop
$557Turkish Airlines
Tue, Apr 21 - Tue, Apr 28
Turkish Airlines Logo
8:10 pm - 5:20 pm
ORD
-
BIO
38h 10m
1 stop
Turkish Airlines Logo
12:10 pm - 9:40 am
BIO
-
ORD
28h 30m
1 stop
$558Turkish Airlines
Tue, Apr 7 - Tue, Apr 14
Turkish Airlines Logo
8:10 pm - 11:10 am
ORD
-
BIO
32h 00m
1 stop
Turkish Airlines Logo
6:20 pm - 9:40 am
BIO
-
ORD
22h 20m
1 stop
$559Turkish Airlines
Thu, Apr 23 - Thu, Apr 30
TAP AIR PORTUGAL Logo
6:05 pm - 6:05 pm
ORD
-
BIO
17h 00m
1 stop
TAP AIR PORTUGAL Logo
6:35 pm - 4:00 pm
BIO
-
ORD
28h 25m
1 stop
$576TAP AIR PORTUGAL
Sat, Apr 11 - Sat, Apr 18
Multiple Airlines Logo
4:07 pm - 11:15 pm
ORD
-
BIO
24h 08m
2 stops
Multiple Airlines Logo
6:45 am - 2:25 pm
BIO
-
ORD
14h 40m
1 stop
$585Multiple Airlines
Wed, Apr 22 - Wed, Apr 29
Delta Logo
11:19 am - 9:50 am
ORD
-
BIO
15h 31m
2 stops
Delta Logo
7:10 am - 6:59 pm
BIO
-
ORD
18h 49m
2 stops
$593Delta
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
4:07 pm - 11:15 pm
ORD
-
BIO
24h 08m
2 stops
Multiple Airlines Logo
6:45 am - 8:52 pm
BIO
-
ORD
21h 07m
2 stops
$596Multiple Airlines
Wed, Apr 22 - Wed, Apr 29
Delta Logo
10:41 am - 9:50 am
MDW
-
BIO
16h 09m
2 stops
Delta Logo
7:10 am - 5:58 pm
BIO
-
MDW
17h 48m
2 stops
$648Delta
Tue, Apr 21 - Tue, Apr 28

Turkish Airlines flights from Chicago to Bilbao

Our best Turkish Airlines deals on Chicago to Bilbao flight tickets
Turkish Airlines
Apr 7
ORD8:10 pmChicago O'Hare Intl
38h 10m
1 stop
BIO5:20 pmBilbao
Apr 14
BIO12:10 pmBilbao
37h 05m
1 stop
ORD6:15 pmChicago O'Hare Intl
$556
Turkish Airlines
Apr 21
ORD8:10 pmChicago O'Hare Intl
38h 10m
1 stop
BIO5:20 pmBilbao
Apr 28
BIO12:10 pmBilbao
28h 30m
1 stop
ORD9:40 amChicago O'Hare Intl
$557
Turkish Airlines
Apr 7
ORD8:10 pmChicago O'Hare Intl
38h 10m
1 stop
BIO5:20 pmBilbao
Apr 14
BIO12:10 pmBilbao
28h 30m
1 stop
ORD9:40 amChicago O'Hare Intl
$558

KLM flights from Chicago to Bilbao

Our best KLM deals on Chicago to Bilbao flight tickets
KLM
Mar 23
ORD5:25 pmChicago O'Hare Intl
11h 55m
1 stop
BIO11:20 amBilbao
Mar 30
BIO6:10 pmBilbao
28h 00m
1 stop
ORD3:10 pmChicago O'Hare Intl
$647
KLM
Mar 23
ORD2:10 pmChicago O'Hare Intl
15h 10m
2 stops
BIO11:20 amBilbao
Mar 30
BIO6:10 pmBilbao
28h 00m
1 stop
ORD3:10 pmChicago O'Hare Intl
$677
KLM
Apr 11
ORD5:10 pmChicago O'Hare Intl
33h 40m
1 stop
BIO9:50 amBilbao
Apr 18
BIO12:00 pmBilbao
33h 15m
1 stop
ORD2:15 pmChicago O'Hare Intl
$783

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 23, 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

Fri 4/17

6:00 pm-5:35 pm

1 stop16h 35m

Bilbao

Thu 4/30

12:15 pm-4:00 pm

1 stop34h 45m

$452

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 4/7

8:10 pm-5:20 pm

1 stop38h 10m

Bilbao

Tue 4/14

12:10 pm-6:15 pm

1 stop37h 05m

$556

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 4/21

8:10 pm-5:20 pm

1 stop38h 10m

Bilbao

Tue 4/28

12:10 pm-9:40 am

1 stop28h 30m

$557

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 4/7

8:10 pm-5:20 pm

1 stop38h 10m

Bilbao

Tue 4/14

12:10 pm-9:40 am

1 stop28h 30m

$558

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 4/23

8:10 pm-11:10 am

1 stop32h 00m

Bilbao

Thu 4/30

6:20 pm-9:40 am

1 stop22h 20m

$559

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 4/11

6:05 pm-6:05 pm

1 stop17h 00m

Bilbao

Sat 4/18

6:35 pm-4:00 pm

1 stop28h 25m

$576

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 4/22

4:07 pm-11:15 pm

2 stops24h 08m

Bilbao

Wed 4/29

6:45 am-2:25 pm

1 stop14h 40m

$585

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 4/21

11:19 am-9:50 am

2 stops15h 31m

Bilbao

Tue 4/28

7:10 am-6:59 pm

2 stops18h 49m

$593

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 4/22

4:07 pm-11:15 pm

2 stops24h 08m

Bilbao

Wed 4/29

6:45 am-8:52 pm

2 stops21h 07m

$596

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Tue 4/21

10:41 am-9:50 am

2 stops16h 09m

Bilbao

Tue 4/28

7:10 am-5:58 pm

2 stops17h 48m

$648

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?

TAP AIR PORTUGAL, Aer Lingus, and Turkish Airlines are the most popular carriers 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 33% 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

14h 50m

Direct flights

None
The fastest flight from Chicago to Bilbao takes 14h 50m
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 14h 50m.

  • 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
7,801 reviews
Search Lufthansa flights
IberiaPriceFrom $656Free CancellationRating
7.0
3,120 reviews
Search Iberia flights
United AirlinesPriceFrom $699Free CancellationRating
7.4
9,339 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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