ORD - BIO

$324 Find Cheap Flights from Chicago to Bilbao

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Bilbao departing on 7/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Bilbao

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Bilbao, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Bilbao, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$559
Typical prices: $843-$649
Turkish Airlines
Tue 10/6Tue 10/13
ORD - BIO • 1 stop
Cheapest one-way
$472
Iberia
Mon 7/6
ORD - BIO • 1 stop
Top airlines
Cheapest • from $559 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Chicago and Bilbao. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $866 (round-trip)
Shortest trip • 11h 47m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 32% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bilbao!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Chicago to Bilbao (ORD-BIO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Bilbao that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to Bilbao

Tue, Oct 6 - Tue, Oct 13
Turkish Airlines Logo
8:10 pm - 5:20 pm
ORD
-
BIO
38h 10m
1 stop
Turkish Airlines Logo
12:10 pm - 9:40 am
BIO
-
ORD
28h 30m
1 stop
$559Turkish Airlines
Sun, Apr 19 - Thu, Apr 30
Turkish Airlines Logo
8:10 pm - 11:10 am
ORD
-
BIO
32h 00m
1 stop
Turkish Airlines Logo
6:20 pm - 9:40 am
BIO
-
ORD
22h 20m
1 stop
$569Turkish Airlines
Mon, Apr 20 - Tue, Apr 28
Turkish Airlines Logo
8:10 pm - 5:20 pm
ORD
-
BIO
38h 10m
1 stop
Turkish Airlines Logo
12:10 pm - 9:40 am
BIO
-
ORD
28h 30m
1 stop
$572Turkish Airlines
Sun, Apr 19 - Mon, May 11
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
$598Turkish Airlines
Tue, Sep 8 - Tue, Sep 15
Turkish Airlines Logo
8:10 pm - 5:20 pm
ORD
-
BIO
38h 10m
1 stop
Turkish Airlines Logo
12:10 pm - 9:40 am
BIO
-
ORD
28h 30m
1 stop
$611Turkish Airlines
Wed, Sep 16 - Sun, Sep 27
Turkish Airlines Logo
11:25 am - 5:20 pm
ORD
-
BIO
22h 55m
1 stop
Turkish Airlines Logo
6:20 pm - 9:40 am
BIO
-
ORD
22h 20m
1 stop
$620Turkish Airlines
Sun, Aug 16 - Mon, Oct 5
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
$622Turkish Airlines
Thu, Apr 23 - Tue, Apr 28
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
$653Turkish Airlines
Tue, Sep 8 - Tue, Sep 15
Turkish Airlines Logo
8:10 pm - 5:20 pm
ORD
-
BIO
38h 10m
1 stop
Turkish Airlines Logo
12:10 pm - 9:40 am
BIO
-
ORD
28h 30m
1 stop
$655Turkish Airlines
Sun, Aug 16 - Mon, Oct 5
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
$660Turkish Airlines
Booking Insights

KAYAK's insights & trends for Chicago to Bilbao flights

Get data-powered insights and trends into flights from Chicago to Bilbao to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Chicago O'Hare Intl Airport to Bilbao?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Chicago O'Hare Intl Airport to Bilbao departing in October.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Bilbao?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Bilbao, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago O'Hare Intl Airport to Bilbao is February, where tickets cost $612 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,472 and $1,117 respectively.

Good to know

Low seasonJanuary
Cheapest flight$472
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Chicago to Bilbao

When to book flights from Chicago to Bilbao

Are your dates flexible? Find out the best times to travel from Chicago to Bilbao based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago to Bilbao flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Bilbao?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Bilbao was $472 for a one-way ticket and $559 for a round-trip.

  • Do I need a passport to fly between Chicago and Bilbao?

    Yes

  • Which aircraft models fly most regularly from Chicago to Bilbao?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Chicago to Bilbao?

    Star Alliance is the only airline alliance operating flights between Chicago and Bilbao.

  • Which is the best airline for flights from Chicago to Bilbao, United Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Chicago to Bilbao are United Airlines and Lufthansa. With an average price for the route of $925 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $972 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from Chicago to Bilbao?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to Bilbao.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to Bilbao?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bilbao from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to Bilbao?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bilbao with an airline and back to Chicago with another airline. Booking your flights between Chicago and BIO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to Bilbao?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bilbao from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Chicago to Bilbao

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Bilbao. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to Bilbao? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9555 reviews
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
7.7Boarding
Airline reviews

The boarding timing needs to be improved. The flight was delayed again because it took way too long to board. I was already exhausted from sleeping at the airport and spending all day there due to delay from my previous flight that connected in Chicago.

4.0 OkayAnonymous, Apr 2026
ORD - BRU
Read more United Airlines reviews

The boarding timing needs to be improved. The flight was delayed again because it took way too long to board. I was already exhausted from sleeping at the airport and spending all day there due to delay from my previous flight that connected in Chicago.

Great until we got to FRA. The next trip leg we were put in Business Class where seats had minimal padding!!!! They were awful and United Airlines needs to have their Lufthansa partner up their game or I won’t fly with them again!!

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Efficient boarding and early departure. Very smooth flight. Early arrival in ATL. Great flight.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

Awful. No counter attendants. No dinner offered due to delays.

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

I tried both on line and by calling the Customer Service line to arrange for a special meal as i have food intolerances. I was under the impression from your service representative that I was successful. I was not. I cannot eat spicy foods and get very ill if i eat bell peppers. I could not eat either menu choice and no special meal was actually ordered. ( your representative tried to order it for a flight that did not have meal service!!! - found this out later). Your wonderful cabin crew managed to put together a fruit, salad, roll and cheese tray for me so I had something to eat. WHY WOULD YOU SERVE SPICY FOOD, WITH NO MILDER OPTION,ON AN INTERNATIONAL FLIGHT???

I liked Quiet people around me. Crew could have helped people with overhead luggage so they aren't moving other peoples bags around and causing problems for people that had there bags there first

The plane was delayed by two hours in Chicago which led to us missing the next flight. Lufthansa rebooked the flight and booked us a hotel for the night in Frankfurt. The level of customer service and getting us taken care of was superb. The flight crew and the service on the ground was superb.

We were charged for luggage, and our ticket was with Lufthansa and was supposed to include luggage fees. So our experience was a bit bad. Also, the flight was about 45 minutes late arriving.

It was good although we could not land in Munich due to weather and we had to go to Stuttgart. Missed our second flight. They did get us on another flight but the seats where not the ones I paid for in the flight that we missed.

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

Smooth Flight, Friendly crew, food offering on board was limited.

I have flown with many airlines. My first time was several years ago. Now I remember why I avoided them for so long. Lufthanza is the only airline who has ever raised a size/weight issue with my modest standard size carry on. I had to repack three times to meet their carry-on weight criteria. (Apparently the rules of physics apply differently on Lufthansa flight than on other airlines.) In the meantime their staff was quite rude, repeating meaningless phrases like "Rules are Rules." And ignoring the additional fact that weight is also weight, whether it is in found in your carry on or in your suitcase. They eventually acknowledged that customer service and satisfaction is, for them, a low priority. Never choosing Lufthansa again.

Everything you need to know for your flight from Chicago to Bilbao

Information on your arrival and departure airports