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ORD - BIO

$910 Find cheap flights from Chicago to Bilbao

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Bilbao departing on 5/26. 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
0 bags
Mon 6/3
Mon 6/10

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Bilbao.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Bilbao.
In the last 7 days travelers have searched 43,693,958 times on KAYAK, and here is why:

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
6:12 am - 10:40 pmORD-BIO
33h 28m2 stops
10:35 am - 4:35 pmBIO-ORD
37h 00m3 stops
Sun, May 26 - Fri, May 31
9:36 am - 11:10 pmORD-BIO
30h 34m3 stops
10:35 am - 5:40 pmBIO-ORD
38h 05m3 stops
Sun, May 26 - Fri, May 31
6:00 pm - 5:35 pmORD-BIO
16h 35m1 stop
6:45 pm - 4:10 pmBIO-ORD
28h 25m1 stop
$999TAP AIR PORTUGAL
Find Deal
Mon, Jul 8 - Sat, Jul 27
9:25 pm - 11:25 pmORD-BIO
19h 00m1 stop
7:35 am - 2:00 pmBIO-ORD
13h 25m1 stop
$1,015United Airlines
Find Deal
Wed, Jun 5 - Wed, Jun 19
6:00 pm - 7:20 pmORD-BIO
18h 20m1 stop
8:30 pm - 4:15 pmBIO-ORD
26h 45m1 stop
$1,055TAP AIR PORTUGAL
Find Deal
Sat, Jul 20 - Sun, Aug 4
9:25 pm - 5:50 pmORD-BIO
13h 25m1 stop
11:35 am - 12:15 pmBIO-ORD
31h 40m1 stop
$1,153Lufthansa
Find Deal
Sun, Jul 7 - Wed, Jul 17
9:25 pm - 5:50 pmORD-BIO
13h 25m1 stop
6:45 am - 12:55 pmBIO-ORD
13h 10m1 stop
$1,362Lufthansa
Find Deal
Fri, Jul 5 - Wed, Jul 17
6:05 pm - 5:50 pmORD-BIO
16h 45m1 stop
7:35 am - 7:55 amBIO-ORD
31h 20m2 stops
$1,398United Airlines
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Fri, Jun 28 - Sat, Jul 6
9:49 am - 8:30 amORD-BIO
15h 41m2 stops
9:15 am - 2:20 pmBIO-ORD
12h 05m1 stop
$3,169Iberia
Find Deal
Wed, Aug 28 - Thu, Sep 12
4:35 pm - 12:55 pmORD-BIO
13h 20m1 stop
9:15 am - 2:20 pmBIO-ORD
12h 05m1 stop
$3,415Iberia
Find Deal
Sat, Aug 31 - Wed, Sep 11

Flights from Chicago to Bilbao - Travel Insights & Trends

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.

What’s the cheapest day of the week to fly from Chicago to Bilbao?

The average price of all flights from Chicago O'Hare Intl Airport to Bilbao clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Bilbao on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Chicago to Bilbao. For your return ticket, we recommend flying on a Monday and avoiding Saturdays for the best deals.

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 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 $537 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,401 and $1,363 respectively.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Bilbao?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Chicago O'Hare Intl Airport to Bilbao, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Chicago O'Hare Intl Airport to Bilbao, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 17 days before departure.

Good to know

Low season

March

High season

June

Cheapest flight

$910
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 33% increase in price.
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 $910 for a round-trip ticket.

  • 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, SkyTeam, and oneworld are the airline alliances operating flights between Chicago and Bilbao, with Star Alliance being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Chicago to Bilbao are Delta and United Airlines. With an average price for the route of $1,325 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,387 and an overall rating of 7.3.

  • 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.

See more FAQs

Top 5 airlines serving 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.
7.3
United AirlinesOverall score based on 11134 reviews
7.2Comfort
7.1Entertainment
6.7Food
8.1Crew
7.7Boarding
Airline reviews

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

8.0 ExcellentAnonymous, Apr 2024ORD - PHX
Read more about United Airlines reviews

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

Nothing beats ANA customer service on my opinion. Maybe because of their Japanese culture (and food). Arigatō

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

Flight delayed for 2 hours due to a part. The plane sat waiting for boarding for a long time and during final preflight inspection the issue was found. Why not do the preflight inspection sooner if you know the plane is being used?

The flight experience was very good! Especially the United Club!

No in flight entertainment, gate employees were very quick and impatient, plane was uncomfortable

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

Aircraft has better leg room than any of United's larger planes. We had requested mobility assistance for this and related flights. United's response to all was superb.

The flight from Ottawa to Chicago took a lot longer due to DC in Ottawa. We got to Chicago and went to our gate to catch our flight. We only had nine minutes I found that very stressful.

Are Longus was fine. I booked thru Kayak and was unable to get my business class seat early. Sat next to galley. Crew forgot to wake me for breakfast.

I loved how they arrange boarding (starting with people seated in back and moving to the front). Flight crew was very polite and welcoming. Seating was ok, I felt like there was enough leg space however it is noticeable when the passenger in front of you sets their seat back.

Nice to be on a flight that wasn't fully booked so there were only two of us in the three seat row.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

Aer Lingus doesn't have plug ins for devices at each seat. They also did not give me a dairy free meal as requested and confirmed by staff. It was as if I had not requested anything. Otherwise, they were great!

The transatlantic flight was wonderful. The regional reminded me of jet blue. Crazy and packed. Not enough overhead space and tough on elderly.

All OK. Food, best bring your own. Even a BigMac will be better.

Always find Aer Lingus reliable and good value for money. Food on this flight was pretty basic and the headphone Jack at my seat only worked for one ear. Little disappointed in movie selection, limited on recent releases. Staff are okay - but I always buy a cheap ticket so not like I expect first class opulence anyway!!!

Boarding was so quick, flight was ahead of time which is great and the pilot spoke clearly and was letting people know everything, amazing, love travelling with you 😊

My luggage did not get to my Miami destination/home. I am waiting for it 24 hours later.

The only comment I have is why do you sell snacks on board? They should be free. When we take domestic flights here in US, our snacks are free. Also, please communicate with me in English. I received so many emails way before my flight that were in Spanish that I had to ask my son to interpret for me. You should be WELL AWARE if the customers you are communicating speak the language, it does mean that we speak and understand Spanish because we are traveling to Spain, NOT NECESSARILY! Thank you!

Flight was delayed by well over an hour. Communication was terrible.

I like the team but I don't like the food you provided with money. I want free food and free water.

An average flight experience. For our transatlantic portion, they provided a main meal and two snacks. However, the food was not very tasty and the drinks far too small and infrequent for such a long flight. The regrettable part of the flight was that the toilets were extremely filthy. I feel this is unacceptable.

Both flights were delayed. I lost my connection on the way back. No voucher or anything was givenx I had business ticket and no support to make it on time. I got to the door running 5 min after they close. Food really bad. Breakfast in business was worst that I what I remember in economy. Even though I have accumulated many miles, I don’t think Inwill keep buying Iberia. I am a frequent business traveler.

The food is really eco only level. Breakfast was shameful. I am considering to stop flying with Iberia. Business prices are as expensive as other companies with much better service.

Why no entertainment? Also water should be free, it is basic human right.

Late boarding. Delayed departure leading to rushed connection at Madrid Barajas. Not necessarily Iberia's fault but delay loading cargo didn't help.

I can’t comment on food as it was necessary to buy it. No entertainment.

I thought Miami's airport was very disorganized during the Boarding.

Very efficient boarding - other airlines could learn from them. Friendly, efficient crew. Red eye flight, so dinner meal was irrelevant. Breakfast could have been more substantial. Seats reasonably comfy.

Disastrous boarding. Entered air bridge only to descend stairs and enter a bus. Plane had insufficient storage, was old and chair recline was damaged. Air stewardess was sullen.

Perfect although it took an hour to board the plane but other than that it was great

The flight crew was good, the flight itself was quick and comfortable

Boarding was late by 30 min due to a bus missing to take us to the plane... And then the flight was delayed by about 90 minutes, in a 60 min flight

The quality of the aircraft and the professionalism of TAP's staff were perfect. The quality of vegan meals can be hit or miss depending on the airline and the city of departure; on this flight, our vegan meals were quite good. The boarding process for the connecting flight in Lisbon could have been organized a bit better, but it did not spoil our overall experience with TAP, which was excellent. I'd definitely recommend TAP to others.

We liked the crew. They were competent, professional and friendly. The only big negative was our departure was delayed several times and the airport staff did not communicate what the problems were and what we should expect.

O comissário não nos serviu bebida no jantar. Quando voltou somente serviu água.

Airline attendant never walks along the isle to check if everyone is ok. The food is worst I’ve experienced. Chicken pasta is very salty while the fish is bland and over-cooked. Only two toilets for the entire economy section.

German crew were very kind. Food was okay but can be better, especially bread was not good, Garbage collection was very poor.

Awful Terrible staff poor communication Flight delayed for an hour with no apology or explanation and no help re missing connecting flight. Resulted in a 7 hour layover at Munich waiting for another connecting flight. Only 15 euros refreshment voucher given. Will not fly Lufthansa again

Both flights were late for what appeared to be the airline’s not having the planes ready. Arrived over 6 hours late.

It was a busy flight and all the crew were very helpful and gracious

Seats were not the most comfortable and food options weren’t great but overall but everything else was excellent

Already stated....flights were fine. Late luggage a disappointment and failure my Lufthansa to get my bag delivered in a timely fashion.

Check-in very easy and smooth. Plane and crew were nice. Seat open next to me created more space. Food was fair but plentiful. Lots of movies and I was able to sleep some on the way to Munich. Very tight connection, about an hour. Fast through passport control and a bit of a walk to last G terminal gate but I made my connection to Palma. Unfortunately, my luggage did not make it. It is now almost 24 hours since I anded and still NO luggage. I know it landed last night on another flight. Local delivery should be today to my hotel in Palma but nothing yet. I asked about the tight connection when I checked in and was assured they would get my luggage to the connecting flight. Very disappointing it missed my flight but more disappointing that it has taken so long to arrive. Failure on the airlines and service to get my luggage to date.

I wish the flight attendant was a little bit kinder

The food wasn’t great and it would be nice if the airlines showed documentaries about the countries we are flying into.

Disappointed everytime. The app doesn't load the boarding passes. They have lots of agent that seem to be busy doing nothing with a long line waiting to get paper boarding passes. Food choices are poor. Entertainment is less than entertaining.

Last minute flights from Chicago to Bilbao

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Chicago to Bilbao that are departing in the next 10 days.
5/5Sun
multi-stopTAP AIR PORTUGAL
10h 45mORD-BIO
5/21Tue
multi-stopTAP AIR PORTUGAL
27h 25mBIO-ORD
$1,009
5/5Sun
multi-stop
19h 50mORD-BIO
5/21Tue
multi-stop
27h 00mBIO-ORD
$1,062
5/5Sun
multi-stop
23h 08mORD-BIO
5/21Tue
multi-stop
27h 25mBIO-ORD
$1,091
5/5Sun
multi-stop
29h 30mORD-BIO
5/21Tue
multi-stop
27h 15mBIO-ORD
$1,269

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Chicago - Bilbao Flights

Departure:

Chicago (ORD)United States

Destination:

Bilbao (BIO)Spain

Return flight deals:

Bilbao - Chicago

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