Which airport is the most popular layover for flights between Chicago and Bilbao?

Frankfurt am Main (FRA) was the most common stop: 64% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Chicago to Bilbao?

Flights via Munich (MUC) offer the lowest average round-trip price of $817.

Which layover airport has the shortest connection time from Chicago to Bilbao?

Munich (MUC) has the shortest average layover time for this route: 2h 03m.

Which layover airport has the shortest travel time from Chicago to Bilbao?

Flights connecting via Paris (CDG) have the shortest average one-way travel time: 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?

The number of operators available for flights from Chicago to Bilbao Airport is 3 as of January 2026.

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.

$285 Cheap Flights from Chicago to Bilbao in 2026

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Find the cheapest flights from Chicago to Bilbao

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:40 pm - 8:50 pm

ORD

BIO

20h 10m

1 stop

9:35 pm - 3:55 pm

BIO

ORD

24h 20m

1 stop

$452Multiple Airlines

lun., mar. 2 - lun., mar. 9

3:50 pm - 12:50 pm

ORD

BIO

14h 00m

2 stops

9:35 pm - 3:55 pm

BIO

ORD

24h 20m

1 stop

$456Iberia

lun., mar. 2 - lun., mar. 9

9:50 pm - 6:05 pm

ORD

BIO

13h 15m

1 stop

11:35 am - 7:25 pm

BIO

ORD

13h 50m

1 stop

$460Lufthansa

dom., mar. 1 - mar., mar. 17

6:00 pm - 6:05 pm

ORD

BIO

17h 05m

1 stop

6:45 am - 6:28 pm

BIO

ORD

17h 43m

2 stops

$473United Airlines

dom., mar. 1 - mar., mar. 17

6:00 am - 12:50 pm

ORD

BIO

23h 50m

2 stops

11:35 am - 10:04 pm

BIO

ORD

40h 29m

2 stops

$483United Airlines

lun., mar. 2 - lun., mar. 9

10:35 pm - 10:50 pm

ORD

BIO

17h 15m

1 stop

7:40 am - 7:25 pm

BIO

ORD

17h 45m

1 stop

$484Lufthansa

jue., mar. 5 - jue., mar. 12

12:45 pm - 11:30 am

MDW

BIO

15h 45m

2 stops

6:50 am - 6:40 pm

BIO

MDW

17h 50m

2 stops

$623Delta

lun., mar. 2 - lun., mar. 9

6:45 pm - 4:30 pm

MDW

BIO

14h 45m

2 stops

7:10 am - 6:31 pm

BIO

MDW

18h 21m

2 stops

$1,686Delta

vie., may. 8 - sáb., jun. 20

1:00 pm - 9:50 am

MDW

BIO

13h 50m

2 stops

7:10 am - 4:27 pm

BIO

MDW

16h 17m

2 stops

$2,405Air France

mié., jun. 3 - mar., jul. 7

1:00 pm - 9:50 am

MDW

BIO

13h 50m

2 stops

7:10 am - 4:25 pm

BIO

MDW

16h 15m

2 stops

$2,686Air France

mié., jun. 3 - lun., jul. 6

Lufthansa flights from Chicago to Bilbao

Our best Lufthansa deals on Chicago to Bilbao flight tickets

Lufthansa

Mar 1

ORD9:50 pmChicago O'Hare Intl

13h 15m

1 stop

BIO6:05 pmBilbao

Mar 17

BIO11:35 amBilbao

13h 50m

1 stop

ORD7:25 pmChicago O'Hare Intl

$460

Lufthansa

Mar 5

ORD10:35 pmChicago O'Hare Intl

17h 15m

1 stop

BIO10:50 pmBilbao

Mar 12

BIO7:40 amBilbao

17h 45m

1 stop

ORD7:25 pmChicago O'Hare Intl

$484

Lufthansa

Apr 2

ORD9:40 pmChicago O'Hare Intl

13h 15m

1 stop

BIO5:55 pmBilbao

Apr 12

BIO7:15 amBilbao

19h 40m

2 stops

ORD7:55 pmChicago O'Hare Intl

$697

United Airlines flights from Chicago to Bilbao

Our best United Airlines deals on Chicago to Bilbao flight tickets

United Airlines

Mar 1

ORD6:00 pmChicago O'Hare Intl

17h 05m

1 stop

BIO6:05 pmBilbao

Mar 17

BIO6:45 amBilbao

17h 43m

2 stops

ORD6:28 pmChicago O'Hare Intl

$473

United Airlines

Mar 2

ORD6:00 amChicago O'Hare Intl

23h 50m

2 stops

BIO12:50 pmBilbao

Mar 9

BIO11:35 amBilbao

40h 29m

2 stops

ORD10:04 pmChicago O'Hare Intl

$483

United Airlines

Jan 28

ORD5:55 pmChicago O'Hare Intl

15h 15m

1 stop

BIO4:10 pmBilbao

Feb 1

BIO7:25 amBilbao

13h 45m

1 stop

ORD2:10 pmChicago O'Hare Intl

$510

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

lun. 3/2

5:40 pm-8:50 pm

1 stop20h 10m

Bilbao

lun. 3/9

9:35 pm-3:55 pm

1 stop24h 20m

$452

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

lun. 3/2

3:50 pm-12:50 pm

2 stops14h 00m

Bilbao

lun. 3/9

9:35 pm-3:55 pm

1 stop24h 20m

$456

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

dom. 3/1

9:50 pm-6:05 pm

1 stop13h 15m

Bilbao

mar. 3/17

11:35 am-7:25 pm

1 stop13h 50m

$460

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

dom. 3/1

6:00 pm-6:05 pm

1 stop17h 05m

Bilbao

mar. 3/17

6:45 am-6:28 pm

2 stops17h 43m

$473

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

lun. 3/2

6:00 am-12:50 pm

2 stops23h 50m

Bilbao

lun. 3/9

11:35 am-10:04 pm

2 stops40h 29m

$483

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

jue. 3/5

10:35 pm-10:50 pm

1 stop17h 15m

Bilbao

jue. 3/12

7:40 am-7:25 pm

1 stop17h 45m

$484

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

lun. 3/2

12:45 pm-11:30 am

2 stops15h 45m

Bilbao

lun. 3/9

6:50 am-6:40 pm

2 stops17h 50m

$623

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

vie. 5/8

6:45 pm-4:30 pm

2 stops14h 45m

Bilbao

sáb. 6/20

7:10 am-6:31 pm

2 stops18h 21m

$1,686

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

mié. 6/3

1:00 pm-9:50 am

2 stops13h 50m

Bilbao

mar. 7/7

7:10 am-4:27 pm

2 stops16h 17m

$2,405

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

mié. 6/3

1:00 pm-9:50 am

2 stops13h 50m

Bilbao

lun. 7/6

7:10 am-4:25 pm

2 stops16h 15m

$2,686

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Airlines

Layovers

What is the cheapest airline that flies from Chicago to Bilbao?

American Airlines, Delta, and KLM are the most popular carriers operating from Chicago to Bilbao

What airlines fly to Bilbao?

United Airlines, Lufthansa and Iberia are the top three most popular airlines that fly to Bilbao from Chicago according to our data. United Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 4 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

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 50m
Direct flights	None

The fastest flight from Chicago to Bilbao takes 13h 50m

There are no direct flights from Chicago to Bilbao. There are no popular flight routes from Chicago to Bilbao.

Search flight deals

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 50m.
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?
The number of operators available for flights from Chicago to Bilbao Airport is 3 as of January 2026.
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?
Based on momondo bookings for flights between Chicago and Bilbao, the leading airline is United Airlines, making up 53% of the total bookings. Other popular airlines include Lufthansa with 47%.

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
Lufthansa	PriceFrom $575	Free Cancellation	Rating 6.8 7,738 reviews	Search Lufthansa flights
Iberia	PriceFrom $656	Free Cancellation	Rating 7.0 3,094 reviews	Search Iberia flights
United Airlines	PriceFrom $699	Free Cancellation	Rating 7.4 9,191 reviews	Search United Airlines flights

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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.