$392 Find Cheap Flights from Bilbao to Illinois

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bilbao to Illinois departing on 12/4. 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 Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bilbao to Illinois, 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 Bilbao to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Bilbao to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bilbao to Illinois 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 Bilbao to Illinois

Thu, Dec 4 - Mon, Dec 8
American Airlines Logo
6:45 am - 2:55 pmBIO-ORD
15h 10m1 stop
American Airlines Logo
5:40 pm - 12:50 pmORD-BIO
12h 10m1 stop
$392American Airlines
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Thu, Dec 4 - Mon, Dec 8
Iberia Logo
6:45 am - 2:55 pmBIO-ORD
15h 10m1 stop
Iberia Logo
5:40 pm - 4:55 pmORD-BIO
16h 15m1 stop
$393Iberia
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Fri, Nov 14 - Tue, Nov 18
Lufthansa Logo
6:45 am - 3:20 pmBIO-ORD
15h 35m1 stop
Lufthansa Logo
9:50 pm - 9:55 pmORD-BIO
17h 05m1 stop
$414Lufthansa
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Sun, Feb 1 - Sat, Feb 7
Lufthansa Logo
6:45 am - 1:10 pmBIO-ORD
13h 25m1 stop
Lufthansa Logo
9:50 pm - 6:05 pmORD-BIO
13h 15m1 stop
$417Lufthansa
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Sun, Feb 1 - Sat, Feb 7
United Airlines Logo
6:45 am - 3:20 pmBIO-ORD
15h 35m1 stop
United Airlines Logo
2:18 pm - 6:05 pmORD-BIO
20h 47m2 stops
$418United Airlines
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Wed, Dec 24 - Wed, Dec 31
United Airlines Logo
12:50 pm - 8:05 pmBIO-ORD
14h 15m1 stop
United Airlines Logo
9:50 pm - 6:05 pmORD-BIO
13h 15m1 stop
$419United Airlines
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Tue, Dec 23 - Wed, Dec 31
Multiple Airlines Logo
5:40 pm - 1:10 pmBIO-ORD
26h 30m1 stop
Multiple Airlines Logo
6:50 pm - 9:10 pmORD-BIO
19h 20m1 stop
$436Multiple Airlines
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Fri, Nov 14 - Tue, Nov 18
SWISS Logo
9:40 am - 4:20 pmBIO-ORD
13h 40m1 stop
SWISS Logo
9:05 pm - 9:10 pmORD-BIO
41h 05m2 stops
$443SWISS
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Tue, Dec 23 - Tue, Dec 30
SWISS Logo
11:35 am - 4:20 pmBIO-ORD
35h 45m2 stops
SWISS Logo
3:45 pm - 9:10 pmORD-BIO
46h 25m2 stops
$467SWISS
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Wed, Dec 3 - Mon, Dec 8
Multiple Airlines Logo
6:45 am - 7:22 pmBIO-ORD
19h 37m2 stops
Multiple Airlines Logo
2:42 pm - 11:15 pmORD-BIO
25h 33m2 stops
$494Multiple Airlines
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Booking Insights

KAYAK's insights & trends for Bilbao to Illinois flights

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

What is the cheapest month to fly from Bilbao to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bilbao to Illinois, 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 Bilbao to Illinois is January, when tickets cost $460 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of round-trip tickets is $766 and $747 respectively.

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Good to know

Low seasonFebruary
Cheapest flight$392
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly with an average 24% increase in price.
Flight from Bilbao to Chicago

FAQs - booking Illinois flights

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

    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 Bilbao to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Bilbao to Illinois 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 Bilbao to Illinois?

    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 from Bilbao to Illinois with an airline and back with another airline.

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

    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 from Bilbao to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $738 on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $738.

Reviews of the top airline flying from Bilbao to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Bilbao to Illinois. 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 Bilbao to Illinois? 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.
6.8
LufthansaOverall score based on 7542 reviews
7.0Boarding
7.6Crew
6.4Entertainment
6.3Food
6.8Comfort
Airline reviews

The seat space seemed small especially when the person ahead reclined but other than that, very good.

10.0 ExcellentAnonymous, Oct 2025FRA - ORD
Read more Lufthansa reviews

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Food was poor quality and the screens for entertainment didn’t work properly

It was a short flight, everything was good with it.

It was as good as a flight in economy can be.

I darted through the Frankfurt airport to make my connecting flight. I asked if it was a possibility to upgrade and the agent did. This was the kindest gesture and it made up for the previous delayed flight and distress/anxiety of anticipating that Zi was going to miss my Frankfurt-Chicago connection. I cannot express my gratitude for the upgrade.. I am 5feet 10 inches do the leg space was amazing.

I meant this flight was not good, the one from Tirana to Frankfurt was better!

I was very grateful for Lufthansa's role in organizing mobility support. The touchscreen on my seat was faulty: slow, stained (I couldn't get it clean), and glitchy. This made selecting movies extremely time consuming, and twice I had to start all over from the beginning.

The crew was the best I’ve ever encountered. Business class was spacious, immaculate, and very modern.

I wish seats were not reclinable. It's so claustrophobic when the person in front of you spends most of a nine hour flight leaned all the way back. The crew was really nice though and the dinner (red Thai curry) was pretty compelling.

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

Information on your arrival and departure airports

Bilbao (BIO)

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