$347+ Cheap flights from Chicago (CHI) to Bilbao (BIO)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BIO
Jun 27 — Jul 41
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Bilbao with Cheapflights
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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 May 28, 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 May 28, 2026.
This Booking.com deal was found by Cheapflights users on 5/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:10 pm
ORD
- BIO
1 stop32h 00m
Turkish Airlines
Wed 11/45:15 pm
BIO
- ORD
1 stop33h 05m
Turkish Airlines
Deal found 5/28![Turkish Airlines logo]()
$709
This Booking.com deal was found by Cheapflights users on 5/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:10 pm
ORD
- BIO
1 stop38h 10m
Turkish Airlines
Thu 9/246:20 pm
BIO
- ORD
1 stop22h 20m
Turkish Airlines
Deal found 5/26![Turkish Airlines logo]()
$710
This Iberia deal was found by Cheapflights users on 5/24. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:55 pm
ORD
- BIO
1 stop20h 55m
Iberia
Tue 9/296:45 am
BIO
- ORD
1 stop14h 40m
Iberia
Deal found 5/24![Iberia logo]()
$736
This Finnair deal was found by Cheapflights users on 5/24. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:01 pm
ORD
- BIO
2 stops22h 14m
Multiple Airlines
Tue 9/296:45 am
BIO
- ORD
2 stops20h 00m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$751
This Justfly.com deal was found by Cheapflights users on 5/24. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:10 pm
ORD
- BIO
1 stop38h 10m
Turkish Airlines
Thu 9/246:20 pm
BIO
- ORD
1 stop22h 20m
Turkish Airlines
Deal found 5/24![Turkish Airlines logo]()
$754
This Scandinavian Airlines deal was found by Cheapflights users on 5/24. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:00 pm
ORD
- BIO
2 stops58h 35m
Scandinavian Airlines
Wed 8/197:35 pm
BIO
- ORD
1 stop27h 35m
Scandinavian Airlines
Deal found 5/24![Scandinavian Airlines logo]()
$761
This eDestinos deal was found by Cheapflights users on 5/26. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:00 pm
ORD
- BIO
2 stops58h 35m
Scandinavian Airlines
Mon 8/2412:25 pm
BIO
- ORD
1 stop34h 45m
Scandinavian Airlines
Deal found 5/26![Scandinavian Airlines logo]()
$765
This Priceline deal was found by Cheapflights users on 5/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:15 pm
ORD
- BIO
1 stop18h 00m
Multiple Airlines
Thu 9/249:15 am
BIO
- ORD
2 stops21h 35m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$770
This Delta deal was found by Cheapflights users on 5/26. 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.
Sun 8/910:54 am
MDW
- BIO
2 stops15h 56m
Delta
Fri 8/216:45 am
BIO
- MDW
2 stops18h 16m
Delta
Deal found 5/26![Delta logo]()
$831
This Delta deal was found by Cheapflights users on 5/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:25 pm
MDW
- BIO
2 stops14h 05m
Delta
Fri 8/216:45 am
BIO
- MDW
2 stops18h 16m
Delta
Deal found 5/25![Delta logo]()
$836
This Delta deal was found by Cheapflights users on 5/26. 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.
Sun 8/910:54 am
MDW
- BIO
2 stops15h 56m
Delta
Wed 8/197:10 am
BIO
- MDW
2 stops18h 23m
Delta
Deal found 5/26![Delta logo]()
$838
This Delta deal was found by Cheapflights users on 5/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:24 am
MDW
- BIO
2 stops24h 06m
Delta
Thu 8/2010:30 am
BIO
- MDW
2 stops19h 06m
Delta
Deal found 5/25![Delta logo]()
$843
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 May 28, 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 May 28, 2026.
This Turkish Airlines deal was found by Cheapflights users on 5/24. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:10 pm
ORD
- BIO
1 stop38h 10m
Turkish Airlines
Thu 9/246:20 pm
BIO
- ORD
1 stop22h 20m
Turkish Airlines
Deal found 5/24![Turkish Airlines logo]()
$724
This Scandinavian Airlines deal was found by Cheapflights users on 5/27. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:15 pm
ORD
- BIO
1 stop16h 30m
Scandinavian Airlines
Wed 8/267:35 pm
BIO
- ORD
1 stop27h 35m
Scandinavian Airlines
Deal found 5/27![Scandinavian Airlines logo]()
$774
This Delta deal was found by Cheapflights users on 5/27. 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 8/196:00 am
ORD
- BIO
2 stops20h 50m
Delta
Tue 8/256:45 am
BIO
- ORD
1 stop14h 30m
Delta
Deal found 5/27![Delta logo]()
$817
This TAP AIR PORTUGAL deal was found by Cheapflights users on 5/23. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/158:10 pm
ORD
- BIO
1 stop15h 25m
TAP AIR PORTUGAL
Thu 11/1912:10 pm
BIO
- ORD
1 stop34h 20m
TAP AIR PORTUGAL
Deal found 5/23![TAP AIR PORTUGAL logo]()
$819
This United Airlines deal was found by Cheapflights users on 5/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:40 pm
ORD
- BIO
1 stop13h 15m
United Airlines
Thu 8/206:50 am
BIO
- ORD
1 stop15h 05m
United Airlines
Deal found 5/24![United Airlines logo]()
$869
This Finnair deal was found by Cheapflights users on 5/25. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2910:30 pm
ORD
- BIO
1 stop17h 45m
Multiple Airlines
Mon 8/39:35 pm
BIO
- ORD
1 stop25h 25m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$894
This Delta deal was found by Cheapflights users on 5/27. 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 8/126:00 am
ORD
- BIO
2 stops20h 50m
Delta
Fri 8/216:45 am
BIO
- ORD
1 stop14h 30m
Delta
Deal found 5/27![Delta logo]()
$817
This United Airlines deal was found by Cheapflights users on 5/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:30 pm
ORD
- BIO
1 stop21h 55m
United Airlines
Wed 8/196:50 am
BIO
- ORD
1 stop15h 05m
United Airlines
Deal found 5/23![United Airlines logo]()
$881
This Delta deal was found by Cheapflights users on 5/27. 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.
Tue 8/185:10 pm
ORD
- BIO
1 stop33h 40m
Delta
Thu 8/276:45 am
BIO
- ORD
1 stop14h 30m
Delta
Deal found 5/27![Delta logo]()
$818
This Delta deal was found by Cheapflights users on 5/26. 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.
Tue 8/111:27 pm
MDW
- BIO
2 stops13h 23m
Delta
Fri 8/216:45 am
BIO
- MDW
2 stops18h 48m
Delta
Deal found 5/26![Delta logo]()
$831
This Delta deal was found by Cheapflights users on 5/27. 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.
Tue 8/1812:46 pm
MDW
- BIO
2 stops14h 04m
Delta
Wed 8/266:45 am
BIO
- MDW
2 stops18h 16m
Delta
Deal found 5/27![Delta logo]()
$831
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:54 am
MDW
- BIO
2 stops15h 56m
Delta
Tue 8/256:45 am
BIO
- MDW
2 stops18h 16m
Delta
Deal found 5/24![Delta logo]()
$831
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/161:27 pm
MDW
- BIO
2 stops13h 23m
Delta
Tue 8/256:45 am
BIO
- MDW
2 stops18h 16m
Delta
Deal found 5/24![Delta logo]()
$831
This Delta deal was found by Cheapflights users on 5/26. 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.
Sun 8/910:54 am
MDW
- BIO
2 stops15h 56m
Delta
Fri 8/216:45 am
BIO
- MDW
2 stops18h 16m
Delta
Deal found 5/26![Delta logo]()
$831
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:10 pm
ORD
- BIO
1 stop33h 40m
Delta
Thu 8/2010:30 am
BIO
- ORD
2 stops29h 56m
Delta
Deal found 5/24![Delta logo]()
$835
This Delta deal was found by Cheapflights users on 5/23. 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 9/147:13 pm
MDW
- BIO
2 stops14h 17m
Delta
Thu 9/246:45 am
BIO
- MDW
2 stops18h 48m
Delta
Deal found 5/23![Delta logo]()
$836
This Delta deal was found by Cheapflights users on 5/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:42 pm
MDW
- BIO
2 stops14h 48m
Delta
Thu 8/2010:30 am
BIO
- MDW
2 stops19h 06m
Delta
Deal found 5/25![Delta logo]()
$843
This Delta deal was found by Cheapflights users on 5/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:24 am
MDW
- BIO
2 stops24h 06m
Delta
Thu 8/2010:30 am
BIO
- MDW
2 stops19h 06m
Delta
Deal found 5/25![Delta logo]()
$843
This Delta deal was found by Cheapflights users on 5/27. 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.
Thu 8/1310:54 am
MDW
- BIO
2 stops15h 56m
Delta
Tue 8/256:45 am
BIO
- MDW
2 stops18h 48m
Delta
Deal found 5/27![Delta logo]()
$881
This Delta deal was found by Cheapflights users on 5/26. 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.
Sun 8/26:58 pm
MDW
- BIO
2 stops14h 32m
Delta
Fri 8/147:10 am
BIO
- MDW
2 stops17h 51m
Delta
Deal found 5/26![Delta logo]()
$900
Last-minute flights from Chicago to BilbaoDiscover last-minute flight deals from Chicago to Bilbao. Data last updated May 28, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Bilbao. Data last updated May 28, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 5/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/79:55 am
ORD
- BIO
3 stops27h 05m
Multiple Airlines
Wed 6/109:00 am
BIO
- ORD
2 stops35h 05m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$966
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/71:26 pm
MDW
- BIO
2 stops13h 24m
Delta
Wed 6/106:45 am
BIO
- MDW
2 stops18h 46m
Delta
Deal found 5/24![Delta logo]()
$1,900
This Delta deal was found by Cheapflights users on 5/27. 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 6/109:54 am
MDW
- BIO
2 stops18h 21m
Delta
Thu 7/26:45 am
BIO
- MDW
2 stops18h 46m
Delta
Deal found 5/27![Delta logo]()
$4,975
This Delta deal was found by Cheapflights users on 5/27. 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.
Fri 6/126:58 pm
MDW
- BIO
2 stops14h 32m
Delta
Sat 7/47:10 am
BIO
- MDW
2 stops17h 44m
Delta
Deal found 5/27![Delta logo]()
$5,475
This Mytrip deal was found by Cheapflights users on 5/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/163:45 pm
ORD
- BIO
3 stops33h 30m
Multiple Airlines
Tue 7/76:50 pm
BIO
- ORD
1 stop26h 55m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$1,077
This Delta deal was found by Cheapflights users on 5/26. 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.
Tue 6/165:11 pm
MDW
- BIO
2 stops16h 19m
Delta
Tue 7/76:45 am
BIO
- MDW
2 stops18h 33m
Delta
Deal found 5/26![Delta logo]()
$1,192
This Mytrip deal was found by Cheapflights users on 5/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1610:15 am
MDW
- BIO
3 stops25h 45m
Multiple Airlines
Tue 7/78:20 am
BIO
- MDW
3 stops17h 05m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$1,301
This Air Canada deal was found by Cheapflights users on 5/23. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/205:55 pm
ORD
- BIO
2 stops36h 25m
Air Canada
Tue 7/146:50 am
BIO
- ORD
2 stops32h 00m
Air Canada
Deal found 5/23![Air Canada logo]()
$1,060
This Air Canada deal was found by Cheapflights users on 5/23. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/209:20 pm
ORD
- BIO
2 stops33h 00m
Air Canada
Mon 7/132:10 pm
BIO
- ORD
2 stops36h 55m
Air Canada
Deal found 5/23![Air Canada logo]()
$1,080
This United Airlines deal was found by Cheapflights users on 5/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/201:30 pm
ORD
- BIO
2 stops14h 45m
United Airlines
Tue 7/147:15 am
BIO
- ORD
1 stop13h 45m
United Airlines
Deal found 5/23![United Airlines logo]()
$1,107
This United Airlines deal was found by Cheapflights users on 5/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2011:03 am
ORD
- BIO
2 stops17h 12m
United Airlines
Wed 7/156:50 am
BIO
- ORD
1 stop15h 05m
United Airlines
Deal found 5/23![United Airlines logo]()
$1,108
This United Airlines deal was found by Cheapflights users on 5/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2012:11 pm
ORD
- BIO
2 stops16h 04m
United Airlines
Mon 7/132:10 pm
BIO
- ORD
1 stop27h 50m
United Airlines
Deal found 5/23![United Airlines logo]()
$1,129
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 May 28, 2026.
Search for one-way flight options from Chicago to Bilbao. Find affordable one-way fares based on user searches. Data last updated May 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/26. 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 9/309:00 pm
ORD
- BIO
1 stop13h 30m
Aer Lingus
Deal found 5/26![Aer Lingus logo]()
$347
This Priceline deal was found by Cheapflights users on 5/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:37 am
ORD
- BIO
2 stops13h 53m
Iberia
Deal found 5/26![Iberia logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 5/26. 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 9/3010:25 pm
ORD
- BIO
3 stops35h 05m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 5/23. 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.
Sat 8/17:25 pm
ORD
- BIO
3 stops40h 15m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:25 pm
ORD
- BIO
3 stops29h 50m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:25 pm
ORD
- BIO
2 stops41h 15m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$413
This Cheapflightsfares deal was found by Cheapflights users on 5/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:05 pm
ORD
- BIO
1 stop18h 15m
SWISS
Deal found 5/24![SWISS logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 5/23. 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 7/3110:25 pm
ORD
- BIO
2 stops37h 20m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/73:45 pm
ORD
- BIO
2 stops32h 50m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$466
This Air France deal was found by Cheapflights users on 5/24. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/301:27 pm
MDW
- BIO
2 stops13h 23m
Air France
Deal found 5/24![Air France logo]()
$468
This Kiwi.com deal was found by Cheapflights users on 5/23. 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 7/316:05 am
MDW
- BIO
3 stops33h 35m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$484
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/73:15 pm
MDW
- BIO
3 stops33h 50m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$506
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 May 28, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $710 (Booking.com) |
One-way from | $347 (Kiwi.com) |
Popular in | January |
Cheapest in | September |
Average price | $1,135 |
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 2,558,603 searches. Data last updated May 28, 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 - BIO
ORDBIO
Chicago O'Hare Intl
Mon 9/14
8:10 pm-5:20 pm
1 stop38h 10m
Bilbao
Thu 9/24
6:20 pm-9:40 am
1 stop22h 20m
$724
ChicagoBilbao
ORD - BIO
ORDBIO
Chicago O'Hare Intl
Tue 8/18
7:15 pm-6:45 pm
1 stop16h 30m
Bilbao
Wed 8/26
7:35 pm-4:10 pm
1 stop27h 35m
$774
ChicagoBilbao
ORD - BIO
ORDBIO
Chicago O'Hare Intl
Wed 8/19
6:00 am-9:50 am
2 stops20h 50m
Bilbao
Tue 8/25
6:45 am-2:15 pm
1 stop14h 30m
$817
ChicagoBilbao
ORD - BIO
ORDBIO
Chicago O'Hare Intl
Wed 8/12
6:00 am-9:50 am
2 stops20h 50m
Bilbao
Fri 8/21
6:45 am-2:15 pm
1 stop14h 30m
$817
ChicagoBilbao
ORD - BIO
ORDBIO
Chicago O'Hare Intl
Tue 8/18
5:10 pm-9:50 am
1 stop33h 40m
Bilbao
Thu 8/27
6:45 am-2:15 pm
1 stop14h 30m
$818
ChicagoBilbao
ORD - BIO
ORDBIO
Chicago O'Hare Intl
Sun 11/15
8:10 pm-6:35 pm
1 stop15h 25m
Bilbao
Thu 11/19
12:10 pm-3:30 pm
1 stop34h 20m
$819
ChicagoBilbao
MDW - BIO
MDWBIO
Chicago Midway
Tue 8/11
1:27 pm-9:50 am
2 stops13h 23m
Bilbao
Fri 8/21
6:45 am-6:33 pm
2 stops18h 48m
$831
ChicagoBilbao
MDW - BIO
MDWBIO
Chicago Midway
Tue 8/18
12:46 pm-9:50 am
2 stops14h 04m
Bilbao
Wed 8/26
6:45 am-6:01 pm
2 stops18h 16m
$831
ChicagoBilbao
MDW - BIO
MDWBIO
Chicago Midway
Mon 8/17
10:54 am-9:50 am
2 stops15h 56m
Bilbao
Tue 8/25
6:45 am-6:01 pm
2 stops18h 16m
$831
ChicagoBilbao
MDW - BIO
MDWBIO
Chicago Midway
Sun 8/16
1:27 pm-9:50 am
2 stops13h 23m
Bilbao
Tue 8/25
6:45 am-6:01 pm
2 stops18h 16m
$831
Showing 1-10 of 34 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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 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
MDW-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
MDW-BIO
What is the cheapest month to book a flight from Chicago to Bilbao?
Currently, September is the cheapest month in which you can book a flight from Chicago to Bilbao (average of $509). Flying from Chicago to Bilbao in June is currently the most expensive (average of $1,012). 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.
How much does it cost to fly round-trip from Chicago to Bilbao?
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 May 28, 2026.
See what other customers who have flown with United Airlines and Lufthansa 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.
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
Find useful and relevant information for your journey from Chicago to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Chicago and Bilbao flights
Browse other Chicago and Bilbao flight options. Last updated on May 28, 2026.
Other flights from Chicago
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Popular flight searches
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Top 2 airlines flying from Chicago to Bilbao
Discover the top 2 airlines that operate flights from Chicago to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$584 | Average$992 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$699 | Average$925 | FlexibilityNo cancel fee | On-time69% |