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

Frankfurt am Main (FRA) has the shortest average layover time for this route: 2h 25m.

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

Istanbul (IST) was the most common stop: 63% 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 Istanbul (IST) offer the lowest average round-trip price of $639.

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

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 13h 23m.

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

Lufthansa, SWISS, and Delta are the most popular carriers operating from Chicago to Bilbao

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 2 as of September 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.

$442 Cheap Flights from Chicago to Bilbao in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Bilbao

Round-trip

One-way

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Cheap round-trip flights

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10:20 pm - 11:15 pmORD Chicago O'Hare Intl-BIO Bilbao

17h 55m1 stop Madrid Barajas

6:45 am - 4:00 pmBIO Bilbao-ORD Chicago O'Hare Intl

16h 15m1 stop Madrid Barajas

$567Finnair

Mon, Oct 5 - Wed, Oct 21

10:20 pm - 11:15 pmORD Chicago O'Hare Intl-BIO Bilbao

17h 55m1 stop Madrid Barajas

6:45 am - 2:25 pmBIO Bilbao-ORD Chicago O'Hare Intl

14h 40m1 stop Madrid Barajas

$576Finnair

Mon, Oct 5 - Wed, Oct 21

6:05 pm - 12:50 pmORD Chicago O'Hare Intl-BIO Bilbao

11h 45m1 stop Madrid Barajas

9:15 am - 2:55 pmBIO Bilbao-ORD Chicago O'Hare Intl

12h 40m1 stop Madrid Barajas

$587Iberia

Tue, Nov 10 - Tue, Nov 17

4:26 pm - 11:15 pmORD Chicago O'Hare Intl-BIO Bilbao

23h 49m2 stops New York John F Kennedy Intl Madrid Barajas

6:45 am - 4:00 pmBIO Bilbao-ORD Chicago O'Hare Intl

16h 15m1 stop Madrid Barajas

$588Multiple Airlines

Mon, Oct 5 - Wed, Oct 21

9:40 pm - 5:55 pmORD Chicago O'Hare Intl-BIO Bilbao

13h 15m1 stop Munich Franz Josef Strauss

11:45 am - 7:25 pmBIO Bilbao-ORD Chicago O'Hare Intl

13h 40m1 stop Munich Franz Josef Strauss

$607Lufthansa

Tue, Oct 20 - Thu, Oct 29

6:00 pm - 11:25 pmORD Chicago O'Hare Intl-BIO Bilbao

22h 25m1 stop Munich Franz Josef Strauss

11:45 am - 6:25 pmBIO Bilbao-ORD Chicago O'Hare Intl

13h 40m1 stop Munich Franz Josef Strauss

$611United Airlines

Mon, Oct 5 - Thu, Nov 12

6:00 pm - 11:25 pmORD Chicago O'Hare Intl-BIO Bilbao

22h 25m1 stop Munich Franz Josef Strauss

11:45 am - 6:25 pmBIO Bilbao-ORD Chicago O'Hare Intl

13h 40m1 stop Munich Franz Josef Strauss

$611United Airlines

Wed, Oct 7 - Fri, Nov 13

6:00 pm - 11:25 pmORD Chicago O'Hare Intl-BIO Bilbao

22h 25m1 stop Munich Franz Josef Strauss

7:30 am - 2:10 pmBIO Bilbao-ORD Chicago O'Hare Intl

13h 40m1 stop Munich Franz Josef Strauss

$611United Airlines

Tue, Oct 6 - Thu, Nov 12

9:40 pm - 5:55 pmORD Chicago O'Hare Intl-BIO Bilbao

13h 15m1 stop Munich Franz Josef Strauss

6:30 pm - 6:25 pmBIO Bilbao-ORD Chicago O'Hare Intl

30h 55m1 stop Munich Franz Josef Strauss

$627Lufthansa

Mon, Oct 5 - Mon, Nov 9

9:40 pm - 11:25 pmORD Chicago O'Hare Intl-BIO Bilbao

18h 45m1 stop Munich Franz Josef Strauss

6:30 pm - 6:25 pmBIO Bilbao-ORD Chicago O'Hare Intl

30h 55m1 stop Munich Franz Josef Strauss

$627Lufthansa

Tue, Oct 6 - Thu, Nov 5

Cheap last minute flights

Enter your travel dates to find the best prices.

4:55 pm - 8:30 amORD Chicago O'Hare Intl-BIO Bilbao

32h 35m1 stop Madrid Barajas

9:35 pm - 2:25 pmBIO Bilbao-ORD Chicago O'Hare Intl

23h 50m1 stop Madrid Barajas

$643British Airways

Tue, Sep 15 - Tue, Sep 22

3:50 pm - 11:15 pmORD Chicago O'Hare Intl-BIO Bilbao

24h 25m2 stops Boston Logan Intl Madrid Barajas

9:35 pm - 4:00 pmBIO Bilbao-ORD Chicago O'Hare Intl

25h 25m1 stop Madrid Barajas

$713Multiple Airlines

Tue, Sep 15 - Tue, Sep 22

2:40 pm - 5:55 pmORD Chicago O'Hare Intl-BIO Bilbao

20h 15m2 stops Zurich Munich Franz Josef Strauss

8:55 pm - 12:35 pmBIO Bilbao-ORD Chicago O'Hare Intl

22h 40m1 stop Zurich

$880SWISS

Tue, Sep 15 - Tue, Sep 22

2:40 pm - 5:55 pmORD Chicago O'Hare Intl-BIO Bilbao

20h 15m2 stops Zurich Munich Franz Josef Strauss

2:05 pm - 12:35 pmBIO Bilbao-ORD Chicago O'Hare Intl

29h 30m2 stops Frankfurt am Main Zurich

$910SWISS

Tue, Sep 15 - Tue, Sep 22

4:05 pm - 5:10 pmORD Chicago O'Hare Intl-BIO Bilbao

18h 05m1 stop Frankfurt am Main

2:05 pm - 7:55 pmBIO Bilbao-ORD Chicago O'Hare Intl

12h 50m1 stop Frankfurt am Main

$921Lufthansa

Tue, Sep 15 - Tue, Sep 22

2:32 pm - 10:45 amORD Chicago O'Hare Intl-BIO Bilbao

13h 13m1 stop Newark

6:50 am - 2:55 pmBIO Bilbao-ORD Chicago O'Hare Intl

15h 05m1 stop Frankfurt am Main

$922United Airlines

Tue, Sep 15 - Tue, Sep 22

5:11 pm - 5:30 pmMDW Chicago Midway-BIO Bilbao

17h 19m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

6:45 am - 6:19 pmBIO Bilbao-MDW Chicago Midway

18h 34m2 stops Amsterdam Schiphol Minneapolis St Paul

$938Delta

Tue, Sep 15 - Tue, Sep 22

7:05 am - 4:00 pmORD Chicago O'Hare Intl-BIO Bilbao

25h 55m2 stops Newark Brussels Bruxelles-National

6:50 am - 2:55 pmBIO Bilbao-ORD Chicago O'Hare Intl

15h 05m1 stop Frankfurt am Main

$995United Airlines

Thu, Sep 17 - Sat, Sep 26

7:05 am - 4:00 pmORD Chicago O'Hare Intl-BIO Bilbao

25h 55m2 stops Newark Brussels Bruxelles-National

6:50 am - 11:31 pmBIO Bilbao-ORD Chicago O'Hare Intl

23h 41m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$1,005United Airlines

Thu, Sep 17 - Sat, Sep 26

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United Airlines flights from Chicago to Bilbao

Our best United Airlines deals on Chicago to Bilbao flight tickets

United Airlines

Oct 7

ORD6:00 pmChicago O'Hare Intl

22h 25m

1 stop

BIO11:25 pmBilbao

Nov 12

BIO7:30 amBilbao

13h 40m

1 stop

ORD2:10 pmChicago O'Hare Intl

$611

United Airlines

Oct 7

ORD6:00 pmChicago O'Hare Intl

22h 25m

1 stop

BIO11:25 pmBilbao

Nov 17

BIO11:45 amBilbao

33h 25m

1 stop

ORD2:10 pmChicago O'Hare Intl

$622

United Airlines

Nov 10

ORD12:59 pmChicago O'Hare Intl

15h 01m

2 stops

BIO11:00 amBilbao

Nov 17

BIO7:30 amBilbao

19h 28m

2 stops

ORD7:58 pmChicago O'Hare Intl

$624

Iberia flights from Chicago to Bilbao

Our best Iberia deals on Chicago to Bilbao flight tickets

Iberia

Nov 10

ORD6:05 pmChicago O'Hare Intl

11h 45m

1 stop

BIO12:50 pmBilbao

Nov 17

BIO9:15 amBilbao

12h 40m

1 stop

ORD2:55 pmChicago O'Hare Intl

$587

Iberia

Jan 4

ORD1:43 pmChicago O'Hare Intl

35h 47m

2 stops

BIO8:30 amBilbao

Jan 18

BIO9:35 pmBilbao

31h 56m

2 stops

ORD10:31 pmChicago O'Hare Intl

$608

Iberia

Sep 28

ORD10:25 pmChicago O'Hare Intl

17h 50m

2 stops

BIO11:15 pmBilbao

Oct 5

BIO9:35 pmBilbao

27h 00m

2 stops

ORD5:35 pmChicago O'Hare Intl

$612

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Mon 10/5

10:20 pm-11:15 pm

1 stop17h 55m

Bilbao

Wed 10/21

6:45 am-4:00 pm

1 stop16h 15m

$567

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Mon 10/5

10:20 pm-11:15 pm

1 stop17h 55m

Bilbao

Wed 10/21

6:45 am-2:25 pm

1 stop14h 40m

$576

Quickest round-trip

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Tue 11/10

6:05 pm-12:50 pm

1 stop11h 45m

Bilbao

Tue 11/17

9:15 am-2:55 pm

1 stop12h 40m

$587

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Mon 10/5

4:26 pm-11:15 pm

2 stops23h 49m

Bilbao

Wed 10/21

6:45 am-4:00 pm

1 stop16h 15m

$588

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Tue 10/20

9:40 pm-5:55 pm

1 stop13h 15m

Bilbao

Thu 10/29

11:45 am-7:25 pm

1 stop13h 40m

$607

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Mon 10/5

6:00 pm-11:25 pm

1 stop22h 25m

Bilbao

Thu 11/12

11:45 am-6:25 pm

1 stop13h 40m

$611

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Wed 10/7

6:00 pm-11:25 pm

1 stop22h 25m

Bilbao

Fri 11/13

11:45 am-6:25 pm

1 stop13h 40m

$611

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Tue 10/6

6:00 pm-11:25 pm

1 stop22h 25m

Bilbao

Thu 11/12

7:30 am-2:10 pm

1 stop13h 40m

$611

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Mon 10/5

9:40 pm-5:55 pm

1 stop13h 15m

Bilbao

Mon 11/9

6:30 pm-6:25 pm

1 stop30h 55m

$627

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Tue 10/6

9:40 pm-11:25 pm

1 stop18h 45m

Bilbao

Thu 11/5

6:30 pm-6:25 pm

1 stop30h 55m

$627

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

Prices

Airlines

Layovers

What is the cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Chicago is in March. Flight prices, which tend to average around $640, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in March, then February is your next best option. Flight prices from Chicago to Bilbao during February average around $739.

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

Best Price Found	$442
Fastest flight time	13h 15m
Direct flights	None

The best one-way flight to Bilbao from Chicago in the past 72 hours is $442. The best round-trip flight deal from Chicago to Bilbao found on momondo in the last 72 hours is $567.

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?
The number of operators available for flights from Chicago to Bilbao Airport is 2 as of September 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.

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 $584	Free Cancellation	Rating 6.8 8,220 reviews		Search Lufthansa flights
United Airlines	PriceFrom $724	Free Cancellation	Rating 7.4 10,206 reviews		Search United Airlines flights

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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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Cheap flights from Chicago to Bilbao from $442

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 10/11. 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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How to get the cheapest flight ticket from Chicago to Bilbao

What is the cheapest month to fly to Bilbao?

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

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

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

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

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

When to book flights from Chicago to Bilbao

Cheap Chicago to Bilbao (CHI to BIO) flight deals and tips

Best Price Found

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Frequently asked questions about flying from Chicago to Bilbao

Best airlines flying from Chicago to Bilbao

Compare and see reviews for airlines that fly from Chicago to Bilbao with momondo

Traveling to a place near Bilbao?

Why use momondo?

An easier way to manage your Bilbao trip

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Bilbao. Availability may vary depending on flight origin and airline.

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