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Cheap flights from Chicago 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 to Bilbao departing on 8/31. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
6:50 pm - 4:00 pm
BIO
-
ORD
28h 10m
1 stop
$595TAP AIR PORTUGAL
Fri, Oct 9 - Tue, Oct 20
Scandinavian Airlines Logo
7:15 pm - 6:45 pm
ORD
-
BIO
16h 30m
1 stop
Scandinavian Airlines Logo
7:35 pm - 4:10 pm
BIO
-
ORD
27h 35m
1 stop
$606Scandinavian Airlines
Tue, Aug 18 - Wed, Aug 26
Scandinavian Airlines Logo
7:15 pm - 6:45 pm
ORD
-
BIO
16h 30m
1 stop
Scandinavian Airlines Logo
7:35 pm - 4:10 pm
BIO
-
ORD
27h 35m
1 stop
$634Scandinavian Airlines
Tue, Aug 18 - Wed, Aug 26
Lufthansa Logo
9:40 pm - 11:25 pm
ORD
-
BIO
18h 45m
1 stop
Lufthansa Logo
6:45 am - 2:10 pm
BIO
-
ORD
13h 25m
1 stop
$713Lufthansa
Tue, Oct 20 - Thu, Oct 29
Turkish Airlines Logo
8:10 pm - 5:20 pm
ORD
-
BIO
38h 10m
1 stop
Turkish Airlines Logo
6:20 pm - 9:40 am
BIO
-
ORD
22h 20m
1 stop
$723Turkish Airlines
Tue, Sep 15 - Thu, Sep 24
Delta Logo
5:20 pm - 5:25 pm
ORD
-
BIO
17h 05m
1 stop
Delta Logo
6:50 am - 2:25 pm
BIO
-
ORD
14h 35m
1 stop
$726Delta
Tue, Nov 3 - Wed, Nov 25
Turkish Airlines Logo
8:10 pm - 11:10 am
ORD
-
BIO
32h 00m
1 stop
Turkish Airlines Logo
12:10 pm - 9:40 am
BIO
-
ORD
28h 30m
1 stop
$727Turkish Airlines
Thu, Aug 13 - Tue, Aug 25
Lufthansa Logo
9:50 pm - 11:05 pm
ORD
-
BIO
18h 15m
1 stop
Lufthansa Logo
7:25 am - 6:25 pm
BIO
-
ORD
18h 00m
1 stop
$728Lufthansa
Wed, Nov 4 - Wed, Nov 25
Delta Logo
6:00 pm - 5:30 pm
ORD
-
BIO
16h 30m
2 stops
Delta Logo
6:50 am - 3:25 pm
BIO
-
ORD
14h 35m
1 stop
$730Delta
Tue, Oct 20 - Thu, Oct 29
United Airlines Logo
6:50 am - 11:25 pm
ORD
-
BIO
33h 35m
2 stops
United Airlines Logo
6:50 am - 7:55 pm
BIO
-
ORD
20h 05m
1 stop
$732United Airlines
Wed, Sep 30 - Wed, Oct 7

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Turkish Airlines flights from Chicago to Bilbao

Our best Turkish Airlines deals on Chicago to Bilbao flight tickets
Turkish Airlines
Sep 15
ORD8:10 pmChicago O'Hare Intl
38h 10m
1 stop
BIO5:20 pmBilbao
Sep 24
BIO6:20 pmBilbao
22h 20m
1 stop
ORD9:40 amChicago O'Hare Intl
$723
Turkish Airlines
Aug 13
ORD8:10 pmChicago O'Hare Intl
32h 00m
1 stop
BIO11:10 amBilbao
Aug 25
BIO12:10 pmBilbao
28h 30m
1 stop
ORD9:40 amChicago O'Hare Intl
$727
Turkish Airlines
Nov 5
ORD12:45 pmChicago O'Hare Intl
15h 10m
1 stop
BIO10:55 amBilbao
Nov 26
BIO5:15 pmBilbao
23h 45m
1 stop
ORD10:00 amChicago O'Hare Intl
$753

KLM flights from Chicago to Bilbao

Our best KLM deals on Chicago to Bilbao flight tickets
KLM
Oct 20
ORD5:10 pmChicago O'Hare Intl
17h 20m
1 stop
BIO5:30 pmBilbao
Oct 29
BIO6:50 amBilbao
15h 34m
2 stops
ORD4:24 pmChicago O'Hare Intl
$735
KLM
Jul 9
ORD5:10 pmChicago O'Hare Intl
33h 40m
1 stop
BIO9:50 amBilbao
Aug 18
BIO12:00 pmBilbao
33h 30m
1 stop
ORD2:30 pmChicago O'Hare Intl
$1,019
KLM
Jul 9
ORD4:20 pmChicago O'Hare Intl
23h 25m
1 stop
BIO10:45 pmBilbao
Aug 18
BIO5:15 pmBilbao
28h 15m
1 stop
ORD2:30 pmChicago O'Hare Intl
$1,022

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 July 6, 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

Cheapest round-trip

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Fri 10/9

6:00 pm-5:35 pm

1 stop16h 35m

Bilbao

Tue 10/20

6:50 pm-4:00 pm

1 stop28h 10m

$595

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 8/18

7:15 pm-6:45 pm

1 stop16h 30m

Bilbao

Wed 8/26

7:35 pm-4:10 pm

1 stop27h 35m

$606

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 8/18

7:15 pm-6:45 pm

1 stop16h 30m

Bilbao

Wed 8/26

7:35 pm-4:10 pm

1 stop27h 35m

$634

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 10/20

9:40 pm-11:25 pm

1 stop18h 45m

Bilbao

Thu 10/29

6:45 am-2:10 pm

1 stop13h 25m

$713

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 9/15

8:10 pm-5:20 pm

1 stop38h 10m

Bilbao

Thu 9/24

6:20 pm-9:40 am

1 stop22h 20m

$723

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 11/3

5:20 pm-5:25 pm

1 stop17h 05m

Bilbao

Wed 11/25

6:50 am-2:25 pm

1 stop14h 35m

$726

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 8/13

8:10 pm-11:10 am

1 stop32h 00m

Bilbao

Tue 8/25

12:10 pm-9:40 am

1 stop28h 30m

$727

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 11/4

9:50 pm-11:05 pm

1 stop18h 15m

Bilbao

Wed 11/25

7:25 am-6:25 pm

1 stop18h 00m

$728
Quickest round-trip

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 10/20

6:00 pm-5:30 pm

2 stops16h 30m

Bilbao

Thu 10/29

6:50 am-3:25 pm

1 stop14h 35m

$730

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 9/30

6:50 am-11:25 pm

2 stops33h 35m

Bilbao

Wed 10/7

6:50 am-7:55 pm

1 stop20h 05m

$732

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 typical price of a round-trip flight between Chicago and Bilbao?

What is the cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Chicago is in September. Flight prices, which tend to average around $509, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in September, then March is your next best option. Flight prices from Chicago to Bilbao during March average around $528.

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

13h 15m

Direct flights

None
The fastest flight from Chicago to Bilbao takes 13h 15m
There are no direct flights from Chicago to Bilbao. There are no popular flight routes from Chicago to Bilbao.
Search flight deals

Frequently asked questions about flying from Chicago to Bilbao

  • 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 13h 15m.

  • 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.

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 $584Free CancellationRating
6.8
8,116 reviews
Search Lufthansa flights
United AirlinesPriceFrom $699Free CancellationRating
7.4
9,940 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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