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Cheap flights from Chicago to Bilbao from $319

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 10/10. 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
8:10 pm - 6:35 pm
ORD
-
BIO
15h 25m
1 stop
TAP AIR PORTUGAL Logo
12:10 pm - 3:30 pm
BIO
-
ORD
34h 20m
1 stop
$584TAP AIR PORTUGAL
Sun, Nov 1 - Thu, Nov 12
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
$585TAP AIR PORTUGAL
Fri, Oct 9 - Tue, Oct 20
TAP AIR PORTUGAL Logo
4:40 pm - 11:30 am
ORD
-
BIO
11h 50m
1 stop
TAP AIR PORTUGAL Logo
12:25 pm - 12:40 pm
BIO
-
ORD
31h 15m
1 stop
$602TAP AIR PORTUGAL
Wed, Aug 26 - Wed, Sep 2
Multiple Airlines Logo
7:30 pm - 8:05 am
ORD
-
BIO
30h 35m
2 stops
Multiple Airlines Logo
9:15 am - 2:55 pm
BIO
-
ORD
12h 40m
1 stop
$690Multiple Airlines
Sun, Oct 25 - Thu, Nov 5
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
$712Lufthansa
Tue, Oct 20 - Thu, Oct 29
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
$714Lufthansa
Tue, Oct 20 - Thu, Oct 29
Multiple Airlines Logo
9:50 pm - 11:05 pm
ORD
-
BIO
18h 15m
1 stop
Multiple Airlines Logo
7:25 am - 7:58 pm
BIO
-
ORD
19h 33m
2 stops
$717Multiple Airlines
Sun, Nov 1 - Thu, Nov 12
Delta Logo
1:28 pm - 11:15 am
MDW
-
BIO
14h 47m
2 stops
Delta Logo
6:50 am - 6:05 pm
BIO
-
MDW
17h 15m
2 stops
$744Delta
Tue, Oct 20 - Thu, Oct 29
Delta Logo
12:28 pm - 11:15 am
MDW
-
BIO
15h 47m
2 stops
Delta Logo
6:50 am - 6:05 pm
BIO
-
MDW
17h 15m
2 stops
$745Delta
Tue, Oct 20 - Thu, Oct 29
Air France Logo
12:30 pm - 11:30 am
MDW
-
BIO
16h 00m
2 stops
Air France Logo
7:10 am - 4:50 pm
BIO
-
MDW
16h 40m
2 stops
$797Air France
Mon, Jan 4 - Mon, Jan 11

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KLM flights from Chicago to Bilbao

Our best KLM deals on Chicago to Bilbao flight tickets
KLM
Aug 29
MDW6:42 pmChicago Midway
14h 48m
2 stops
BIO4:30 pmBilbao
Sep 5
BIO6:45 amBilbao
16h 12m
2 stops
MDW3:57 pmChicago Midway
$1,004
KLM
Aug 29
MDW6:42 pmChicago Midway
14h 48m
2 stops
BIO4:30 pmBilbao
Sep 5
BIO6:45 amBilbao
16h 12m
2 stops
MDW3:57 pmChicago Midway
$1,005
KLM
Jul 28
ORD4:20 pmChicago O'Hare Intl
17h 10m
1 stop
BIO4:30 pmBilbao
Aug 8
BIO7:10 amBilbao
15h 00m
1 stop
ORD3:10 pmChicago O'Hare Intl
$1,111

United Airlines flights from Chicago to Bilbao

Our best United Airlines deals on Chicago to Bilbao flight tickets
United Airlines
Jan 4
ORD1:19 pmChicago O'Hare Intl
26h 46m
2 stops
BIO11:05 pmBilbao
Jan 11
BIO11:35 amBilbao
33h 35m
1 stop
ORD2:10 pmChicago O'Hare Intl
$744
United Airlines
Jan 3
ORD9:50 pmChicago O'Hare Intl
13h 15m
1 stop
BIO6:05 pmBilbao
Jan 11
BIO11:35 amBilbao
30h 10m
2 stops
ORD10:45 amChicago O'Hare Intl
$764
United Airlines
Jan 3
ORD9:50 pmChicago O'Hare Intl
18h 15m
1 stop
BIO11:05 pmBilbao
Jan 11
BIO6:45 amBilbao
22h 02m
3 stops
ORD9:47 pmChicago O'Hare Intl
$788

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 16, 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

Sun 11/1

8:10 pm-6:35 pm

1 stop15h 25m

Bilbao

Thu 11/12

12:10 pm-3:30 pm

1 stop34h 20m

$584

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

$585

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 8/26

4:40 pm-11:30 am

1 stop11h 50m

Bilbao

Wed 9/2

12:25 pm-12:40 pm

1 stop31h 15m

$602

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 10/25

7:30 pm-8:05 am

2 stops30h 35m

Bilbao

Thu 11/5

9:15 am-2:55 pm

1 stop12h 40m

$690

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

$712

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

$714

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 11/1

9:50 pm-11:05 pm

1 stop18h 15m

Bilbao

Thu 11/12

7:25 am-7:58 pm

2 stops19h 33m

$717
Quickest round-trip

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Tue 10/20

1:28 pm-11:15 am

2 stops14h 47m

Bilbao

Thu 10/29

6:50 am-6:05 pm

2 stops17h 15m

$744

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Tue 10/20

12:28 pm-11:15 am

2 stops15h 47m

Bilbao

Thu 10/29

6:50 am-6:05 pm

2 stops17h 15m

$745

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Mon 1/4

12:30 pm-11:30 am

2 stops16h 00m

Bilbao

Mon 1/11

7:10 am-4:50 pm

2 stops16h 40m

$797

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 25m

Direct flights

None
The fastest flight from Chicago to Bilbao takes 13h 25m
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 25m.

  • 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
8,136 reviews
Search Lufthansa flights
United AirlinesPriceFrom $699Free CancellationRating
7.4
9,988 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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