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$665+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
BDL — BIO
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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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 August 14, 2025.

Round-trip from

$665
(United Airlines)
From Hartford Bradley Intl to Bilbao
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Find flight deals from Hartford to Bilbao

Cheapest flights from Hartford to Bilbao
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 August 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/14. 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 9/2812:37 pmBDL - BIO
2 stops23h 48mUnited Airlines
Sun 10/56:45 amBIO - BDL
2 stops32h 52mUnited Airlines
Deal found 8/14$665
This United Airlines deal was found by Cheapflights users on 8/12. 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.
Wed 9/101:01 pmBDL - BIO
2 stops22h 49mUnited Airlines
Wed 9/1712:30 pmBIO - BDL
2 stops17h 14mUnited Airlines
Deal found 8/12$680
This United Airlines deal was found by Cheapflights users on 8/13. 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 9/277:53 pmBDL - BIO
2 stops38h 12mUnited Airlines
Sat 10/42:10 pmBIO - BDL
2 stops39h 47mUnited Airlines
Deal found 8/13$685
This United Airlines deal was found by Cheapflights users on 8/13. 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 8/296:10 pmBDL - BIO
2 stops18h 15mUnited Airlines
Tue 9/26:45 amBIO - BDL
2 stops32h 51mUnited Airlines
Deal found 8/13$1,232
This Gotogate deal was found by Cheapflights users on 8/14. 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.
Sat 8/306:05 pmBDL - BIO
1 stop17h 25mAer Lingus
Wed 9/36:10 pmBIO - BDL
1 stop28h 25mAer Lingus
Deal found 8/14$1,518
This lol.travel deal was found by Cheapflights users on 8/14. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/302:50 pmBDL - BIO
2 stops13h 55mUnited Airlines
Wed 9/312:30 pmBIO - BDL
2 stops17h 14mUnited Airlines
Deal found 8/14$1,608
This Gotogate deal was found by Cheapflights users on 8/13. 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.
Fri 8/296:05 pmBDL - BIO
1 stop17h 25mAer Lingus
Tue 9/26:10 pmBIO - BDL
1 stop28h 25mAer Lingus
Deal found 8/13$1,751
This Mytrip deal was found by Cheapflights users on 8/13. 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.
Fri 8/294:30 pmBDL - BIO
3 stops33h 50mMultiple Airlines
Tue 9/29:00 pmBIO - BDL
2 stops25h 35mMultiple Airlines
Deal found 8/13$1,769
This Mytrip deal was found by Cheapflights users on 8/14. 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.
Sat 8/304:30 pmBDL - BIO
3 stops24h 15mMultiple Airlines
Wed 9/312:00 pmBIO - BDL
2 stops34h 35mMultiple Airlines
Deal found 8/14$1,892

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 August 14, 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

Sun 9/28

12:37 pm-6:25 pm

2 stops23h 48m

Bilbao

Sun 10/5

6:45 am-9:37 am

2 stops32h 52m

$665

HartfordBilbao

BDL - BIO

BDLBIO

Hartford Bradley Intl

Wed 9/10

1:01 pm-5:50 pm

2 stops22h 49m

Bilbao

Wed 9/17

12:30 pm-11:44 pm

2 stops17h 14m

$680

HartfordBilbao

BDL - BIO

BDLBIO

Hartford Bradley Intl

Sat 9/27

7:53 pm-4:05 pm

2 stops38h 12m

Bilbao

Sat 10/4

2:10 pm-11:57 pm

2 stops39h 47m

$685

HartfordBilbao

BDL - BIO

BDLBIO

Hartford Bradley Intl

Fri 8/29

6:10 pm-6:25 pm

2 stops18h 15m

Bilbao

Tue 9/2

6:45 am-9:36 am

2 stops32h 51m

$1,232

HartfordBilbao

BDL - BIO

BDLBIO

Hartford Bradley Intl

Sat 8/30

6:05 pm-5:30 pm

1 stop17h 25m

Bilbao

Wed 9/3

6:10 pm-4:35 pm

1 stop28h 25m

$1,518

HartfordBilbao

BDL - BIO

BDLBIO

Hartford Bradley Intl

Sat 8/30

2:50 pm-10:45 am

2 stops13h 55m

Bilbao

Wed 9/3

12:30 pm-11:44 pm

2 stops17h 14m

$1,608

HartfordBilbao

BDL - BIO

BDLBIO

Hartford Bradley Intl

Fri 8/29

6:05 pm-5:30 pm

1 stop17h 25m

Bilbao

Tue 9/2

6:10 pm-4:35 pm

1 stop28h 25m

$1,751

HartfordBilbao

BDL - BIO

BDLBIO

Hartford Bradley Intl

Fri 8/29

4:30 pm-8:20 am

3 stops33h 50m

Bilbao

Tue 9/2

9:00 pm-4:35 pm

2 stops25h 35m

$1,769

HartfordBilbao

BDL - BIO

BDLBIO

Hartford Bradley Intl

Sat 8/30

4:30 pm-10:45 pm

3 stops24h 15m

Bilbao

Wed 9/3

12:00 pm-4:35 pm

2 stops34h 35m

$1,892

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

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.

Related info for your journey

Find useful and relevant information for your journey from Hartford to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Hartford to Bilbao that include hotel bookings?

    Yes. In addition to deals on Hartford to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Hartford to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hartford to Bilbao.

  • Can I find deals for business class flights from Hartford to Bilbao?

    Yes. Cheapflights offers flight deals from Hartford to Bilbao by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Hartford to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Hartford to Bilbao (average of $541). Flying from Hartford to Bilbao in June is currently the most expensive (average of $1,139). 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.

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