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

TAP AIR PORTUGAL, American Airlines, and KLM are the most popular carriers operating from Chicago to Bilbao

What airlines fly to Bilbao?

Iberia, United Airlines and Lufthansa are the top three most popular airlines that fly to Bilbao from Chicago according to our data. Iberia is the first choice among our users, with 44% 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 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 4 as of July 2025.

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.

$292 Cheap Flights from Chicago to Bilbao in 2025

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Find the cheapest flights from Chicago to Bilbao

Round-trip

One-way

Cheap round-trip flights

6:00 pm - 8:05 pmORD-BIO

19h 05m2 stops

8:20 am - 4:30 pmBIO-ORD

39h 10m2 stops

$471

Find Deal

Fri, Aug 22 - Fri, Aug 29

6:15 pm - 6:05 pmORD-BIO

16h 50m1 stop

6:35 pm - 4:15 pmBIO-ORD

28h 40m1 stop

$500TAP AIR PORTUGAL

Find Deal

Sat, Aug 23 - Sat, Aug 30

11:25 am - 5:25 pmORD-BIO

23h 00m1 stop

12:05 pm - 9:40 amBIO-ORD

28h 35m1 stop

$573Turkish Airlines

Find Deal

Wed, Oct 8 - Tue, Oct 14

7:50 pm - 5:25 pmORD-BIO

38h 35m1 stop

12:00 pm - 10:05 amBIO-ORD

29h 05m1 stop

$628Turkish Airlines

Find Deal

Tue, Oct 7 - Sat, Nov 15

9:08 pm - 4:40 pmORD-BIO

37h 32m2 stops

5:30 pm - 1:10 pmBIO-ORD

26h 40m1 stop

$647Lufthansa

Find Deal

Sat, Nov 1 - Mon, Nov 10

9:08 pm - 12:05 pmORD-BIO

32h 57m2 stops

5:30 pm - 1:10 pmBIO-ORD

26h 40m1 stop

$648Lufthansa

Find Deal

Sat, Nov 1 - Mon, Nov 10

4:20 pm - 4:40 pmORD-BIO

18h 20m1 stop

12:50 pm - 1:10 pmBIO-ORD

31h 20m1 stop

$665United Airlines

Find Deal

Sat, Nov 1 - Mon, Nov 10

10:25 pm - 9:20 amORD-BIO

27h 55m2 stops

9:15 am - 2:15 pmBIO-ORD

12h 00m1 stop

$678Iberia

Find Deal

Wed, Sep 3 - Tue, Sep 16

9:50 pm - 11:05 pmORD-BIO

18h 15m1 stop

6:40 am - 3:20 pmBIO-ORD

15h 40m1 stop

$693United Airlines

Find Deal

Fri, Jan 2 - Sun, Jan 11

10:35 pm - 8:30 amORD-BIO

26h 55m2 stops

5:35 pm - 6:50 pmBIO-ORD

32h 15m1 stop

$704Iberia

Find Deal

Fri, Sep 19 - Sat, Sep 27

Air Canada flights from Chicago to Bilbao

Our best Air Canada deals on Chicago to Bilbao flight tickets

Air Canada

Sep 2

ORD10:40 amChicago O'Hare Intl

24h 10m

2 stops

BIO5:50 pmBilbao

Sep 16

BIO6:45 amBilbao

20h 26m

2 stops

ORD8:11 pmChicago O'Hare Intl

$671

Find similar

Air Canada

Sep 2

ORD7:11 amChicago O'Hare Intl

27h 39m

2 stops

BIO5:50 pmBilbao

Sep 13

BIO6:45 amBilbao

34h 06m

2 stops

ORD9:51 amChicago O'Hare Intl

$721

Find similar

Air Canada

Sep 10

ORD10:40 amChicago O'Hare Intl

24h 10m

2 stops

BIO5:50 pmBilbao

Sep 20

BIO6:45 amBilbao

33h 23m

2 stops

ORD9:08 amChicago O'Hare Intl

$728

Find similar

TAP AIR PORTUGAL flights from Chicago to Bilbao

Our best TAP AIR PORTUGAL deals on Chicago to Bilbao flight tickets

TAP AIR PORTUGAL

Aug 23

ORD6:15 pmChicago O'Hare Intl

16h 50m

1 stop

BIO6:05 pmBilbao

Aug 30

BIO6:35 pmBilbao

28h 40m

1 stop

ORD4:15 pmChicago O'Hare Intl

$500

Find similar

TAP AIR PORTUGAL

Aug 16

ORD6:15 pmChicago O'Hare Intl

16h 50m

1 stop

BIO6:05 pmBilbao

Aug 23

BIO6:35 pmBilbao

28h 40m

1 stop

ORD4:15 pmChicago O'Hare Intl

$502

Find similar

TAP AIR PORTUGAL

Aug 16

ORD6:15 pmChicago O'Hare Intl

16h 50m

1 stop

BIO6:05 pmBilbao

Aug 23

BIO6:35 pmBilbao

28h 40m

1 stop

ORD4:15 pmChicago O'Hare Intl

$503

Find similar

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

What is the cheapest day to depart on your flight to Bilbao?

The cheapest day to depart from Chicago 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 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 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	$292
Fastest flight time	12h 30m
Direct flights	None
Airports in Bilbao	1 airport

The best one-way flight to Bilbao from Chicago in the past 72 hours is $292. The best round-trip flight deal from Chicago to Bilbao found on momondo in the last 72 hours is $471.

The fastest flight from Chicago to Bilbao takes 12h 30m

There are no direct flights from Chicago to Bilbao. Popular non-direct routes for this connection are Chicago Midway Airport - Bilbao Airport and Chicago O'Hare Intl Airport - Bilbao Airport.

There is 1 airport near Bilbao: Bilbao (BIO)

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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 12h 30m.
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 4 as of July 2025.
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 30% of the total bookings. Other popular airlines include Iberia with 27%, Lufthansa with 27%, and Turkish Airlines with 17%.

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
KLM	PriceFrom $567	Free Cancellation	Rating 7.8 1,372 reviews	Search KLM flights
United Airlines	PriceFrom $639	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
Iberia	PriceFrom $640	Free Cancellation	Rating 7.0 2,826 reviews	Search Iberia flights
Lufthansa	PriceFrom $646	Free Cancellation	Rating 6.8 7,199 reviews	Search Lufthansa 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.