$327+ Cheap flights from Chicago (CHI) to Bilbao (BIO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BIO
Nov 25 — Dec 21
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Bilbao with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Chicago to Bilbao
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Best
Last-minute
One-way
Cheapest flights from Chicago to BilbaoExplore the most affordable flight options available from Chicago to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
Explore the most affordable flight options available from Chicago to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/298:10 pm -
2 stops31h 05m
Sat 12/512:25 pm -
1 stop34h 05m
Deal found 10/23![Multiple Airlines logo]()
$679
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:10 pm -
2 stops29h 10m
Sat 12/512:25 pm -
1 stop34h 05m
Deal found 10/23![Multiple Airlines logo]()
$687
This Trip.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:15 pm -
1 stop30h 40m
Wed 11/185:15 pm -
1 stop23h 45m
Deal found 10/24![Turkish Airlines logo]()
$702
This Gotogate deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/259:15 pm -
1 stop31h 40m
Tue 11/1011:55 am -
1 stop29h 05m
Deal found 10/21![Turkish Airlines logo]()
$723
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/298:10 pm -
1 stop19h 35m
Thu 12/312:10 pm -
1 stop34h 20m
Deal found 10/23![Multiple Airlines logo]()
$730
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/298:10 pm -
1 stop19h 35m
Tue 6/223:05 pm -
2 stops30h 20m
Deal found 10/21![Multiple Airlines logo]()
$736
This flugladen.de deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/98:15 pm -
1 stop37h 00m
Sat 11/1411:55 am -
1 stop29h 05m
Deal found 10/21![Turkish Airlines logo]()
$744
This Expedia deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/68:10 pm -
1 stop15h 25m
Sun 12/139:35 pm -
1 stop24h 20m
Deal found 10/22![Multiple Airlines logo]()
$755
This Turkish Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:15 pm -
1 stop37h 00m
Mon 12/1411:55 am -
1 stop37h 25m
Deal found 10/23![Turkish Airlines logo]()
$763
This KLM deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:25 pm -
1 stop16h 00m
Thu 4/156:45 am -
1 stop14h 30m
Deal found 10/25![KLM logo]()
$771
Best flights from Chicago to BilbaoDiscover carefully curated flight deals from Chicago to Bilbao that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
Discover carefully curated flight deals from Chicago to Bilbao that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
This Turkish Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:15 pm -
1 stop37h 00m
Fri 12/411:55 am -
1 stop29h 05m
Deal found 10/23![Turkish Airlines logo]()
$793
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/51:12 pm -
2 stops14h 58m
Sun 4/1111:55 am -
2 stops18h 20m
Deal found 10/25![United Airlines logo]()
$826
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/79:59 am -
2 stops18h 31m
Mon 12/146:50 am -
2 stops19h 19m
Deal found 10/23![Delta logo]()
$835
This KLM deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:25 pm -
1 stop16h 00m
Thu 12/176:50 am -
1 stop14h 35m
Deal found 10/25![KLM logo]()
$856
This KAYAK deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/29:50 pm -
1 stop18h 30m
Sat 1/96:45 am -
2 stops19h 04m
Deal found 10/25![Lufthansa logo]()
$1,035
This Turkish Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/211:45 am -
1 stop21h 30m
Sun 12/65:15 pm -
1 stop23h 45m
Deal found 10/23![Turkish Airlines logo]()
$813
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:15 pm -
2 stops20h 40m
Thu 12/176:45 am -
2 stops24h 16m
Deal found 10/25![United Airlines logo]()
$837
This Turkish Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/279:15 pm -
1 stop30h 55m
Sun 4/46:25 pm -
1 stop22h 10m
Deal found 10/23![Turkish Airlines logo]()
$823
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:15 am -
2 stops18h 15m
Mon 6/2112:00 pm -
1 stop33h 15m
Deal found 10/21![Delta logo]()
$961
This Turkish Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/311:20 am -
1 stop23h 10m
Sun 4/186:25 pm -
1 stop22h 10m
Deal found 10/22![Turkish Airlines logo]()
$853
This Turkish Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:15 pm -
1 stop37h 00m
Thu 12/105:15 pm -
1 stop32h 05m
Deal found 10/25![Turkish Airlines logo]()
$1,001
Last-minute flights from Chicago to BilbaoDiscover last-minute flight deals from Chicago to Bilbao. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Bilbao. Data last updated October 26, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/259:15 pm -
1 stop31h 40m
Tue 11/1011:55 am -
1 stop29h 05m
Deal found 10/21![Turkish Airlines logo]()
$723
This Trip.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:15 pm -
1 stop30h 40m
Wed 11/185:15 pm -
1 stop23h 45m
Deal found 10/24![Turkish Airlines logo]()
$702
This Turkish Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/612:45 pm -
1 stop15h 10m
Tue 11/1011:55 am -
1 stop29h 05m
Deal found 10/21![Turkish Airlines logo]()
$794
This flugladen.de deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/98:15 pm -
1 stop37h 00m
Sat 11/1411:55 am -
1 stop29h 05m
Deal found 10/21![Turkish Airlines logo]()
$744
This Turkish Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:45 am -
1 stop21h 30m
Mon 11/1611:55 am -
1 stop29h 05m
Deal found 10/22![Turkish Airlines logo]()
$803
This Turkish Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2611:45 am -
1 stop16h 10m
Fri 12/411:55 am -
1 stop29h 05m
Deal found 10/23![Turkish Airlines logo]()
$802
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:10 pm -
2 stops29h 10m
Sat 12/512:25 pm -
1 stop34h 05m
Deal found 10/23![Multiple Airlines logo]()
$687
This Turkish Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:15 pm -
1 stop37h 00m
Fri 12/411:55 am -
1 stop29h 05m
Deal found 10/23![Turkish Airlines logo]()
$793
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/298:10 pm -
2 stops31h 05m
Sat 12/512:25 pm -
1 stop34h 05m
Deal found 10/23![Multiple Airlines logo]()
$679
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/298:10 pm -
1 stop19h 35m
Thu 12/312:10 pm -
1 stop34h 20m
Deal found 10/23![Multiple Airlines logo]()
$730
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/298:10 pm -
1 stop19h 35m
Tue 6/223:05 pm -
2 stops30h 20m
Deal found 10/21![Multiple Airlines logo]()
$736
One-way flights from Chicago to BilbaoSearch for one-way flight options from Chicago to Bilbao. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
Search for one-way flight options from Chicago to Bilbao. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This Expedia deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/266:50 pm -
1 stop34h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![SWISS logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:30 pm -
3 stops20h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$328
This Expedia deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/269:50 pm -
2 stops18h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Iberia logo]()
$334
This Expedia deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/174:30 pm -
2 stops22h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:30 pm -
3 stops21h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/266:30 pm -
3 stops19h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:10 pm -
3 stops39h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:30 pm -
2 stops17h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$392
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:05 pm -
1 stop13h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Aer Lingus logo]()
$425
Find flight deals from Chicago to Bilbao
Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 26, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $679 (Kiwi.com) |
One-way from | $327 (Expedia) |
Popular in | April |
Cheapest in | March |
Average price | $1,139 |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago to Bilbao that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 26, 2026.
Use the filters below to find and compare flights from Chicago to Bilbao that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Wed 3/17
5:10 pm-9:20 pm
1 stop22h 10m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$337
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Tue 12/1
7:30 pm-6:35 pm
2 stops16h 05m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$392
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Sat 11/14
6:20 pm-10:45 pm
3 stops45h 25m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$428
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Mon 11/30
6:30 pm-8:45 pm
3 stops19h 15m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$432
Quickest round-trip
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Mon 11/30
6:50 pm-2:15 pm
1 stop12h 25m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$483
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Sun 11/29
6:50 pm-5:45 pm
2 stops15h 55m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$494
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Thu 11/19
12:15 pm-11:20 am
3 stops40h 05m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$496
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Sun 11/8
9:50 pm-9:55 pm
1 stop17h 05m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$500
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Sun 11/8
11:19 am-11:30 am
2 stops17h 11m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$506
ChicagoBilbao
ORD Chicago O'Hare Intl - BIO Bilbao
ORDBIO
Chicago O'Hare Intl
Sat 11/14
6:50 pm-7:20 pm
1 stop17h 30m
Bilbao
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$518
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Chicago to Bilbao
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Bilbao in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago-Bilbao flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Chicago-Bilbao flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Chicago-Bilbao flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago-Bilbao flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Chicago to Bilbao
Have a flexible travel schedule? Discover the best time to fly to Bilbao from Chicago with our price prediction graph.
CHI-BIO
ORD-BIO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Chicago to Bilbao
CHI-BIO
ORD-BIO
What is the cheapest month to book a flight from Chicago to Bilbao?
Currently, March is the cheapest month in which you can book a flight from Chicago to Bilbao (average of $686). Flying from Chicago to Bilbao in June is currently the most expensive (average of $1,319). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Bilbao
Get insights into the airlines that provide service to Bilbao. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bilbao. Reviews last updated October 26, 2026.
See what other customers who have flown with Iberia from Chicago to Bilbao have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.6
Boarding
7.2
Crew
7.7
Comfort
6.8
Overall
7.0
Food
6.4
Reviews
1 / 20
2.0
MediocreT,Jun 2026
JFK - MAD
Entertainment
6.6
Boarding
7.2
Crew
7.7
Comfort
6.8
Overall
7.0
Food
6.4
Reviews
1 / 20
2.0
MediocreT,Jun 2026
JFK - MAD
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$528 | Average$992 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$724 | Average$925 | FlexibilityNo cancel fee | On-time69% |