Cheap flights from Chicago O'Hare Intl Airport to Bilbao from $361
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 O'Hare Intl Airport to Bilbao departing on 7/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Chicago O'Hare Intl Airport to Bilbao
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Air Canada flights from Chicago O'Hare Intl Airport to Bilbao
Our best Air Canada deals on Chicago O'Hare Intl Airport to Bilbao flight tickets
Lufthansa flights from Chicago O'Hare Intl Airport to Bilbao
Our best Lufthansa deals on Chicago O'Hare Intl Airport to Bilbao flight tickets
See travel insights to Bilbao from
How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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
What is the cheapest month to fly to Bilbao?
The cheapest month to fly to Bilbao from Chicago O'Hare Intl Airport is in February. Flight prices, which tend to average around $678, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in February, then April is your next best option. Flight prices from Chicago O'Hare Intl Airport to Bilbao during April average around $733.
What is the cheapest day to depart on your flight to Bilbao?
The cheapest day to depart from Chicago O'Hare Intl Airport 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 airline that flies from Chicago O'Hare Intl to Bilbao?
TAP AIR PORTUGAL, Air Canada, and Aer Lingus are the most popular carriers operating from Chicago O'Hare Intl 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 O'Hare Intl Airport 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 to book flights from Chicago O'Hare Intl Airport to Bilbao
Cheap Chicago O'Hare Intl Airport to Bilbao (ORD to BIO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Bilbao
How far is Chicago O'Hare Intl to Bilbao by plane?
There are 4115.9 mi between Chicago O'Hare Intl and Bilbao. Flights usually cover this in 10h 59m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Bilbao Airport?
Prices for flights from Chicago O'Hare Intl Airport to Bilbao Airport were last updated today.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Bilbao Airport?
As of June 2025, there are 4 operators available to choose from for flights from Chicago O'Hare Intl Airport to Bilbao Airport.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Bilbao Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Bilbao Airport.
What documentation or ID do you need to fly to Bilbao Airport?
The required travel and health documents for your Bilbao Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bilbao Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Chicago O'Hare Intl Airport to Bilbao?
momondo data reveals that the most frequently booked airline on the route from Chicago O'Hare Intl Airport to Bilbao is Iberia, representing 38% of all bookings. The subsequent popular airlines are United Airlines at 29%, Lufthansa at 21%, and KLM at 12%.
Best airlines flying from Chicago O'Hare Intl Airport to Bilbao
Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Bilbao with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $567 | Free Cancellation | Rating 7.8 1,358 reviews | |||
| PriceFrom $612 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom $639 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $646 | Free Cancellation | Rating 6.7 7,136 reviews |
Traveling to a place near Bilbao?
Book flights to Bilbao if you plan to visit one of these locationsWhy 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. momondo allows you to filter the results for Chicago to Bilbao flights to just show those with flexible booking policies.
How can momondo help me find flights from Chicago to Bilbao?
momondo provides multiple filters to help you find the best flight to Bilbao from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Chicago to Bilbao right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Chicago to Bilbao flights. All you need is a valid email address and we will do the rest; it is that quick and easy.