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Cheap flights from Chicago O'Hare Intl Airport to Bilbao from $258

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 O'Hare Intl Airport to Bilbao departing on 9/22. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to Bilbao

Cheap round-trip flights

United Airlines Logo
9:50 pm - 11:05 pmORD-BIO
18h 15m1 stop
United Airlines Logo
11:35 am - 6:25 pmBIO-ORD
13h 50m1 stop
$456United Airlines
Find Deal
Sun, Nov 2 - Tue, Nov 18
Multiple Airlines Logo
9:50 pm - 6:05 pmORD-BIO
13h 15m1 stop
Multiple Airlines Logo
7:25 am - 5:48 pmBIO-ORD
17h 23m2 stops
$465Multiple Airlines
Find Deal
Sun, Nov 2 - Tue, Nov 18
Lufthansa Logo
3:35 pm - 5:50 pmORD-BIO
19h 15m1 stop
Lufthansa Logo
7:25 am - 7:25 pmBIO-ORD
18h 00m1 stop
$481Lufthansa
Find Deal
Mon, Oct 20 - Fri, Oct 31
United Airlines Logo
6:00 pm - 11:25 pmORD-BIO
22h 25m1 stop
United Airlines Logo
2:10 pm - 7:55 pmBIO-ORD
12h 45m1 stop
$489United Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 15
Iberia Logo
4:45 pm - 12:50 pmORD-BIO
13h 05m1 stop
Iberia Logo
6:45 am - 3:30 pmBIO-ORD
14h 45m1 stop
$520Iberia
Find Deal
Thu, Mar 5 - Thu, Mar 12
Iberia Logo
11:45 am - 8:30 amORD-BIO
13h 45m2 stops
Iberia Logo
9:15 am - 3:30 pmBIO-ORD
12h 15m1 stop
$524Iberia
Find Deal
Thu, Mar 5 - Thu, Mar 12
Air Canada Logo
10:40 am - 5:50 pmORD-BIO
24h 10m2 stops
Air Canada Logo
6:45 am - 2:48 pmBIO-ORD
15h 03m2 stops
$539Air Canada
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Thu, Oct 16 - Thu, Oct 23
Lufthansa Logo
9:08 pm - 12:00 pmORD-BIO
32h 52m2 stops
Lufthansa Logo
6:50 pm - 6:25 pmBIO-ORD
30h 35m1 stop
$547Lufthansa
Find Deal
Sat, Nov 1 - Mon, Nov 10
SWISS Logo
6:50 pm - 6:05 pmORD-BIO
16h 15m2 stops
SWISS Logo
11:35 am - 4:20 pmBIO-ORD
35h 45m2 stops
$550SWISS
Find Deal
Sun, Nov 2 - Tue, Nov 18
Air Canada Logo
2:00 pm - 12:05 pmORD-BIO
15h 05m2 stops
Air Canada Logo
12:45 pm - 3:10 pmBIO-ORD
57h 25m2 stops
$651Air Canada
Find Deal
Mon, Nov 24 - Sun, Nov 30

Scandinavian Airlines flights from Chicago O'Hare Intl Airport to Bilbao

Our best Scandinavian Airlines deals on Chicago O'Hare Intl Airport to Bilbao flight tickets
Scandinavian Airlines
Dec 11
ORD7:10 amChicago O'Hare Intl
28h 30m
2 stops
BIO6:40 pmBilbao
Jan 2
BIO7:30 pmBilbao
28h 15m
1 stop
ORD4:45 pmChicago O'Hare Intl
$1,009
Find similar
Scandinavian Airlines
Dec 14
ORD7:10 amChicago O'Hare Intl
28h 30m
2 stops
BIO6:40 pmBilbao
Jan 2
BIO7:30 pmBilbao
28h 15m
1 stop
ORD4:45 pmChicago O'Hare Intl
$1,079
Find similar
Scandinavian Airlines
Dec 14
ORD7:20 pmChicago O'Hare Intl
16h 20m
1 stop
BIO6:40 pmBilbao
Jan 2
BIO7:30 pmBilbao
28h 15m
1 stop
ORD4:45 pmChicago O'Hare Intl
$1,113
Find similar

Turkish Airlines flights from Chicago O'Hare Intl Airport to Bilbao

Our best Turkish Airlines deals on Chicago O'Hare Intl Airport to Bilbao flight tickets
Turkish Airlines
Nov 1
ORD9:20 pmChicago O'Hare Intl
31h 40m
1 stop
BIO11:00 amBilbao
Nov 10
BIO12:00 pmBilbao
29h 05m
1 stop
ORD10:05 amChicago O'Hare Intl
$634
Find similar
Turkish Airlines
Nov 1
ORD9:20 pmChicago O'Hare Intl
31h 40m
1 stop
BIO11:00 amBilbao
Nov 10
BIO12:00 pmBilbao
37h 25m
1 stop
ORD6:25 pmChicago O'Hare Intl
$653
Find similar
Turkish Airlines
Nov 20
ORD11:50 amChicago O'Hare Intl
16h 10m
1 stop
BIO11:00 amBilbao
Nov 30
BIO5:10 pmBilbao
23h 55m
1 stop
ORD10:05 amChicago O'Hare Intl
$720
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 September 17, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 11/2

9:50 pm-11:05 pm

1 stop18h 15m

Bilbao

Tue 11/18

11:35 am-6:25 pm

1 stop13h 50m

$456

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 11/2

9:50 pm-6:05 pm

1 stop13h 15m

Bilbao

Tue 11/18

7:25 am-5:48 pm

2 stops17h 23m

$465

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 10/20

3:35 pm-5:50 pm

1 stop19h 15m

Bilbao

Fri 10/31

7:25 am-7:25 pm

1 stop18h 00m

$481

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 10/6

6:00 pm-11:25 pm

1 stop22h 25m

Bilbao

Wed 10/15

2:10 pm-7:55 pm

1 stop12h 45m

$489

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 3/5

4:45 pm-12:50 pm

1 stop13h 05m

Bilbao

Thu 3/12

6:45 am-3:30 pm

1 stop14h 45m

$520

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 3/5

11:45 am-8:30 am

2 stops13h 45m

Bilbao

Thu 3/12

9:15 am-3:30 pm

1 stop12h 15m

$524

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 10/16

10:40 am-5:50 pm

2 stops24h 10m

Bilbao

Thu 10/23

6:45 am-2:48 pm

2 stops15h 03m

$539

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 11/1

9:08 pm-12:00 pm

2 stops32h 52m

Bilbao

Mon 11/10

6:50 pm-6:25 pm

1 stop30h 35m

$547

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 11/2

6:50 pm-6:05 pm

2 stops16h 15m

Bilbao

Tue 11/18

11:35 am-4:20 pm

2 stops35h 45m

$550

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 11/24

2:00 pm-12:05 pm

2 stops15h 05m

Bilbao

Sun 11/30

12:45 pm-3:10 pm

2 stops57h 25m

$651

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 O'Hare Intl Airport 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 month to fly to Bilbao?

The cheapest month to fly to Bilbao from Chicago O'Hare Intl Airport is in February. Flight prices, which tend to average around $678, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in February, then April is your next best option. Flight prices from Chicago O'Hare Intl Airport to Bilbao during April average around $739.

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

The cheapest day to depart from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport to Bilbao

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

Cheap Chicago O'Hare Intl Airport to Bilbao (ORD to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Bilbao

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to Bilbao. There are no popular flight routes from Chicago O'Hare Intl Airport to Bilbao.
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  • How far is Chicago O'Hare Intl to Bilbao by plane?

    There are 4115.9 mi between Chicago O'Hare Intl and Bilbao. Flights usually cover this in 11h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Bilbao Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Bilbao Airport were last updated today.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Bilbao Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Bilbao Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Bilbao Airport.

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

    The required travel and health documents for your Bilbao Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bilbao Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Chicago O'Hare Intl Airport to Bilbao?

Best airlines flying from Chicago O'Hare Intl Airport to Bilbao

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Bilbao with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $639Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
IberiaPriceFrom $640Free CancellationRating
7.0
2,925 reviews
Search Iberia flights
LufthansaPriceFrom $646Free CancellationRating
6.8
7,409 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. momondo allows you to filter the results for Chicago to Bilbao flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Bilbao from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Chicago to Bilbao flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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