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Cheap flights from Chicago to Bilbao from $372

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 3/12. 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
8:25 pm - 6:35 pmORD-BIO
15h 10m1 stop
TAP AIR PORTUGAL Logo
12:10 pm - 2:45 pmBIO-ORD
33h 35m1 stop
$472TAP AIR PORTUGAL
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Sun, Nov 30 - Sat, Dec 13
Lufthansa Logo
9:50 pm - 11:05 pmORD-BIO
18h 15m1 stop
Lufthansa Logo
6:45 am - 1:10 pmBIO-ORD
13h 25m1 stop
$510Lufthansa
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Tue, Feb 10 - Tue, Feb 24
Delta Logo
5:20 pm - 11:30 amORD-BIO
11h 10m1 stop
Delta Logo
6:50 am - 2:20 pmBIO-ORD
14h 30m1 stop
$519Delta
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Sun, Feb 8 - Mon, Feb 23
Delta Logo
1:30 pm - 5:20 pmORD-BIO
20h 50m2 stops
Delta Logo
11:55 am - 2:20 pmBIO-ORD
33h 25m1 stop
$520Delta
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Mon, Feb 9 - Sun, Feb 22
Multiple Airlines Logo
9:50 pm - 6:05 pmORD-BIO
13h 15m1 stop
Multiple Airlines Logo
7:25 am - 2:10 pmBIO-ORD
13h 45m1 stop
$521Multiple Airlines
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Sun, Feb 1 - Sun, Feb 8
Multiple Airlines Logo
9:50 pm - 11:05 pmORD-BIO
18h 15m1 stop
Multiple Airlines Logo
6:45 am - 10:05 pmBIO-ORD
22h 20m2 stops
$524Multiple Airlines
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Mon, Nov 24 - Tue, Dec 2
United Airlines Logo
2:30 pm - 12:50 pmORD-BIO
15h 20m2 stops
United Airlines Logo
12:50 pm - 8:05 pmBIO-ORD
14h 15m1 stop
$526United Airlines
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Thu, Feb 12 - Wed, Feb 25
Air Canada Logo
7:15 am - 12:50 pmORD-BIO
22h 35m2 stops
Air Canada Logo
12:45 pm - 7:30 pmBIO-ORD
37h 45m2 stops
$527Air Canada
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Thu, Feb 12 - Sun, Feb 22
United Airlines Logo
9:50 pm - 11:05 pmORD-BIO
18h 15m1 stop
United Airlines Logo
6:45 am - 8:57 pmBIO-ORD
21h 12m2 stops
$528United Airlines
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Mon, Nov 24 - Tue, Dec 2
Air Canada Logo
9:20 pm - 12:05 pmORD-BIO
31h 45m2 stops
Air Canada Logo
6:45 am - 4:52 pmBIO-ORD
41h 07m2 stops
$544Air Canada
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Sun, Nov 30 - Sat, Dec 13

Turkish Airlines flights from Chicago to Bilbao

Our best Turkish Airlines deals on Chicago to Bilbao flight tickets
Turkish Airlines
Nov 8
ORD11:50 amChicago O'Hare Intl
21h 20m
1 stop
BIO4:10 pmBilbao
Dec 9
BIO12:00 pmBilbao
29h 05m
1 stop
ORD10:05 amChicago O'Hare Intl
$591
Find similar
Turkish Airlines
Nov 4
ORD11:50 amChicago O'Hare Intl
21h 20m
1 stop
BIO4:10 pmBilbao
Nov 14
BIO12:00 pmBilbao
29h 05m
1 stop
ORD10:05 amChicago O'Hare Intl
$600
Find similar
Turkish Airlines
Nov 8
ORD11:50 amChicago O'Hare Intl
21h 20m
1 stop
BIO4:10 pmBilbao
Dec 9
BIO12:00 pmBilbao
29h 05m
1 stop
ORD10:05 amChicago O'Hare Intl
$606
Find similar

United Airlines flights from Chicago to Bilbao

Our best United Airlines deals on Chicago to Bilbao flight tickets
United Airlines
Feb 12
ORD2:30 pmChicago O'Hare Intl
15h 20m
2 stops
BIO12:50 pmBilbao
Feb 25
BIO12:50 pmBilbao
14h 15m
1 stop
ORD8:05 pmChicago O'Hare Intl
$526
Find similar
United Airlines
Nov 24
ORD9:50 pmChicago O'Hare Intl
18h 15m
1 stop
BIO11:05 pmBilbao
Dec 2
BIO6:45 amBilbao
21h 12m
2 stops
ORD8:57 pmChicago O'Hare Intl
$528
Find similar
United Airlines
Nov 24
ORD12:00 pmChicago O'Hare Intl
15h 50m
2 stops
BIO10:50 amBilbao
Dec 2
BIO6:45 amBilbao
23h 58m
2 stops
ORD11:43 pmChicago O'Hare Intl
$533
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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 October 23, 2025.
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 11/30

8:25 pm-6:35 pm

1 stop15h 10m

Bilbao

Sat 12/13

12:10 pm-2:45 pm

1 stop33h 35m

$472

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 2/10

9:50 pm-11:05 pm

1 stop18h 15m

Bilbao

Tue 2/24

6:45 am-1:10 pm

1 stop13h 25m

$510

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 2/8

5:20 pm-11:30 am

1 stop11h 10m

Bilbao

Mon 2/23

6:50 am-2:20 pm

1 stop14h 30m

$519

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 2/9

1:30 pm-5:20 pm

2 stops20h 50m

Bilbao

Sun 2/22

11:55 am-2:20 pm

1 stop33h 25m

$520

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 2/1

9:50 pm-6:05 pm

1 stop13h 15m

Bilbao

Sun 2/8

7:25 am-2:10 pm

1 stop13h 45m

$521

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 11/24

9:50 pm-11:05 pm

1 stop18h 15m

Bilbao

Tue 12/2

6:45 am-10:05 pm

2 stops22h 20m

$524

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 2/12

2:30 pm-12:50 pm

2 stops15h 20m

Bilbao

Wed 2/25

12:50 pm-8:05 pm

1 stop14h 15m

$526

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 2/12

7:15 am-12:50 pm

2 stops22h 35m

Bilbao

Sun 2/22

12:45 pm-7:30 pm

2 stops37h 45m

$527

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 11/24

9:50 pm-11:05 pm

1 stop18h 15m

Bilbao

Tue 12/2

6:45 am-8:57 pm

2 stops21h 12m

$528

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 11/30

9:20 pm-12:05 pm

2 stops31h 45m

Bilbao

Sat 12/13

6:45 am-4:52 pm

2 stops41h 07m

$544

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 day to depart on your flight to Bilbao?

The cheapest day to depart from Chicago to Bilbao is on a Monday. Travelers who choose to depart for Bilbao on a Monday will often find tickets for as low as $930. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,171. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bilbao.

What is the cheapest time of day to depart on your flight to Bilbao?

Our most recent data shows that the best time of day to fly to Bilbao is in the morning. Flights from Chicago to Bilbao during this time can be as low as $652. In the evening is when there is more demand to fly to Bilbao, so prices are often more expensive at around $1,100 per ticket.

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

Direct flights

None
There are no direct flights from Chicago to Bilbao. There are no popular flight routes from Chicago to Bilbao.
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  • 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 10m.

  • 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
IberiaPriceFrom $612Free CancellationRating
7.0
2,997 reviews
Search Iberia flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
8,991 reviews
Search United Airlines flights
LufthansaPriceFrom $698Free CancellationRating
6.8
7,514 reviews
Search Lufthansa 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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