$689+ Cheap flights from Hartford (BDL) 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
BDL — BIO
Dec 20 — Dec 271
1 adult, Economy
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Cheapest flights from Hartford to BilbaoExplore the most affordable flight options available from Hartford to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.
Explore the most affordable flight options available from Hartford to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.
This United Airlines deal was found by Cheapflights users on 11/18. 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 12/56:00 amBDL - BIO
2 stops35h 20mUnited Airlines
Tue 12/96:45 amBIO - BDL
2 stops20h 46mUnited Airlines
Deal found 11/18![United Airlines logo]()
$689
This Delta deal was found by Cheapflights users on 11/17. 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 12/57:30 amBDL - BIO
2 stops21h 50mDelta
Tue 12/96:50 amBIO - BDL
2 stops19h 21mDelta
Deal found 11/17![Delta logo]()
$691
Cheap flight deals from Hartford to Bilbao
Discover tips and strategies to find the most affordable flight options for your journey from Hartford (BDL) 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 November 20, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 1 star |
Round-trip from | $689 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Hartford 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 November 20, 2025.
Use the filters below to find and compare flights from Hartford to Bilbao that are best for you.
Fly from
Hartford
Fly to
Bilbao
Route
Depart
Return
Price
HartfordBilbao
BDL - BIO
BDLBIO
Hartford Bradley Intl
Fri 12/5
6:00 am-11:20 pm
2 stops35h 20m
Bilbao
Tue 12/9
6:45 am-9:31 pm
2 stops20h 46m
$689
HartfordBilbao
BDL - BIO
BDLBIO
Hartford Bradley Intl
Fri 12/5
7:30 am-11:20 am
2 stops21h 50m
Bilbao
Tue 12/9
6:50 am-8:11 pm
2 stops19h 21m
$691
HartfordBilbao
BDL - BIO
BDLBIO
Hartford Bradley Intl
Fri 3/27
6:00 am-12:00 pm
2 stops25h 00m
Bilbao
Tue 3/31
6:45 am-9:22 pm
3 stops20h 37m
$836
HartfordBilbao
BDL - BIO
BDLBIO
Hartford Bradley Intl
Sat 1/3
6:15 pm-11:20 pm
2 stops23h 05m
Bilbao
Sat 1/10
11:35 am-2:22 pm
2 stops32h 47m
$1,075
HartfordBilbao
BDL - BIO
BDLBIO
Hartford Bradley Intl
Sat 1/3
5:40 pm-3:15 pm
1 stop15h 35m
Bilbao
Sat 1/10
12:00 pm-11:48 pm
2 stops41h 48m
$2,050
- Most accurate provider: When it comes to deals on Hartford-Bilbao flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Hartford-Bilbao flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Hartford-Bilbao flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Hartford-Bilbao flights, Cheapflights users trust FlightHub the most. FlightHub 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 Hartford-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 Hartford to Bilbao
Have a flexible travel schedule? Discover the best time to fly to Bilbao from Hartford with our price prediction graph.
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.