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Cheap flights from Chicago O'Hare Intl Airport to Bilbao from $306

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 1/5. 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

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
7:20 pm - 6:40 pmORD-BIO
16h 20m1 stop
Scandinavian Airlines Logo
7:30 pm - 4:45 pmBIO-ORD
28h 15m1 stop
$457Scandinavian Airlines
Find Deal
jue., nov. 27 - vie., dic. 12
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
$461TAP AIR PORTUGAL
Find Deal
dom., nov. 30 - sáb., dic. 13
Scandinavian Airlines Logo
7:20 pm - 6:40 pmORD-BIO
16h 20m1 stop
Scandinavian Airlines Logo
7:30 pm - 9:35 pmBIO-ORD
32h 05m2 stops
$475Scandinavian Airlines
Find Deal
jue., mar. 5 - lun., mar. 16
Delta Logo
4:20 pm - 11:15 amORD-BIO
11h 55m1 stop
Delta Logo
12:00 pm - 2:20 pmBIO-ORD
33h 20m1 stop
$501Delta
Find Deal
vie., abr. 3 - mar., abr. 7
Delta Logo
4:20 pm - 11:15 amORD-BIO
11h 55m1 stop
Delta Logo
6:50 am - 9:35 pmBIO-ORD
21h 45m2 stops
$511Delta
Find Deal
vie., abr. 3 - mar., abr. 7
Lufthansa Logo
9:50 pm - 11:20 pmORD-BIO
18h 30m1 stop
Lufthansa Logo
6:50 pm - 7:25 pmBIO-ORD
30h 35m1 stop
$618Lufthansa
Find Deal
vie., mar. 6 - lun., mar. 16
United Airlines Logo
1:10 pm - 10:50 amORD-BIO
14h 40m2 stops
United Airlines Logo
7:25 am - 7:30 pmBIO-ORD
18h 05m2 stops
$682United Airlines
Find Deal
jue., mar. 5 - sáb., mar. 14
United Airlines Logo
9:50 pm - 6:05 pmORD-BIO
13h 15m1 stop
United Airlines Logo
6:45 am - 1:10 pmBIO-ORD
13h 25m1 stop
$725United Airlines
Find Deal
dom., nov. 30 - sáb., dic. 13
Lufthansa Logo
9:50 pm - 11:20 pmORD-BIO
18h 30m1 stop
Lufthansa Logo
6:45 am - 1:10 pmBIO-ORD
13h 25m1 stop
$768Lufthansa
Find Deal
vie., nov. 14 - mar., dic. 9
Iberia Logo
3:50 pm - 12:50 pmORD-BIO
14h 00m2 stops
Iberia Logo
6:45 am - 8:58 pmBIO-ORD
21h 13m2 stops
$860Iberia
Find Deal
dom., nov. 30 - sáb., dic. 13

TAP AIR PORTUGAL flights from Chicago O'Hare Intl Airport to Bilbao

Our best TAP AIR PORTUGAL deals on Chicago O'Hare Intl Airport to Bilbao flight tickets
TAP AIR PORTUGAL
Nov 30
ORD8:25 pmChicago O'Hare Intl
15h 10m
1 stop
BIO6:35 pmBilbao
Dec 13
BIO12:10 pmBilbao
33h 35m
1 stop
ORD2:45 pmChicago O'Hare Intl
$461
Find similar
TAP AIR PORTUGAL
Nov 13
ORD11:20 amChicago O'Hare Intl
23h 35m
2 stops
BIO5:55 pmBilbao
Dec 10
BIO12:10 pmBilbao
26h 32m
3 stops
ORD7:42 amChicago O'Hare Intl
$1,099
Find similar
TAP AIR PORTUGAL
Nov 13
ORD11:20 amChicago O'Hare Intl
23h 35m
2 stops
BIO5:55 pmBilbao
Dec 10
BIO12:10 pmBilbao
26h 32m
3 stops
ORD7:42 amChicago O'Hare Intl
$1,279
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
Apr 6
ORD7:50 pmChicago O'Hare Intl
38h 30m
1 stop
BIO5:20 pmBilbao
Apr 21
BIO11:55 amBilbao
28h 45m
1 stop
ORD9:40 amChicago O'Hare Intl
$566
Find similar
Turkish Airlines
Mar 5
ORD11:50 amChicago O'Hare Intl
16h 10m
1 stop
BIO11:00 amBilbao
Mar 16
BIO12:00 pmBilbao
29h 05m
1 stop
ORD11:05 amChicago O'Hare Intl
$604
Find similar
Turkish Airlines
Mar 5
ORD11:50 amChicago O'Hare Intl
16h 10m
1 stop
BIO11:00 amBilbao
Mar 16
BIO12:00 pmBilbao
29h 05m
1 stop
ORD11:05 amChicago O'Hare Intl
$613
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 noviembre 4, 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

jue. 11/27

7:20 pm-6:40 pm

1 stop16h 20m

Bilbao

vie. 12/12

7:30 pm-4:45 pm

1 stop28h 15m

$457

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

dom. 11/30

8:25 pm-6:35 pm

1 stop15h 10m

Bilbao

sáb. 12/13

12:10 pm-2:45 pm

1 stop33h 35m

$461

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

jue. 3/5

7:20 pm-6:40 pm

1 stop16h 20m

Bilbao

lun. 3/16

7:30 pm-9:35 pm

2 stops32h 05m

$475

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

vie. 4/3

4:20 pm-11:15 am

1 stop11h 55m

Bilbao

mar. 4/7

12:00 pm-2:20 pm

1 stop33h 20m

$501

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

vie. 4/3

4:20 pm-11:15 am

1 stop11h 55m

Bilbao

mar. 4/7

6:50 am-9:35 pm

2 stops21h 45m

$511

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

vie. 3/6

9:50 pm-11:20 pm

1 stop18h 30m

Bilbao

lun. 3/16

6:50 pm-7:25 pm

1 stop30h 35m

$618

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

jue. 3/5

1:10 pm-10:50 am

2 stops14h 40m

Bilbao

sáb. 3/14

7:25 am-7:30 pm

2 stops18h 05m

$682

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

dom. 11/30

9:50 pm-6:05 pm

1 stop13h 15m

Bilbao

sáb. 12/13

6:45 am-1:10 pm

1 stop13h 25m

$725

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

vie. 11/14

9:50 pm-11:20 pm

1 stop18h 30m

Bilbao

mar. 12/9

6:45 am-1:10 pm

1 stop13h 25m

$768

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

dom. 11/30

3:50 pm-12:50 pm

2 stops14h 00m

Bilbao

sáb. 12/13

6:45 am-8:58 pm

2 stops21h 13m

$860

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 10m, 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
IberiaPriceFrom $612Free CancellationRating
7.0
3,006 reviews
Search Iberia flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
LufthansaPriceFrom $698Free CancellationRating
6.8
7,547 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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