HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sofia

$555+ Cheap flights from Hartford (BDL) to Sofia (SOF)

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
BDL — SOF
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Hartford to Sofia 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 Hartford to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Hartford (BDL) to Sofia (SOF). 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 13, 2025.

Round-trip from

$555
(United Airlines)
From Hartford Bradley Intl to Sofia
Search Deals

Find flight deals from Hartford to Sofia

Cheapest flights from Hartford to Sofia
Explore the most affordable flight options available from Hartford to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This United Airlines deal was found by Cheapflights users on 11/11. 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.
Tue 12/96:10 amBDL - SOF
2 stops33h 35mUnited Airlines
Wed 12/242:25 pmSOF - BDL
2 stops16h 33mUnited Airlines
Deal found 11/11$555
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/106:10 amBDL - SOF
2 stops22h 40mUnited Airlines
Thu 12/252:35 pmSOF - BDL
2 stops16h 23mUnited Airlines
Deal found 11/11$564
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Tue 12/97:50 pmBDL - SOF
2 stops19h 55mUnited Airlines
Tue 12/232:00 pmSOF - BDL
2 stops40h 58mUnited Airlines
Deal found 11/11$567
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Tue 12/96:10 amBDL - SOF
2 stops33h 35mUnited Airlines
Sun 12/217:55 amSOF - BDL
2 stops23h 03mUnited Airlines
Deal found 11/11$572
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/106:10 amBDL - SOF
2 stops22h 40mUnited Airlines
Tue 12/232:00 pmSOF - BDL
2 stops40h 58mUnited Airlines
Deal found 11/11$576
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/106:10 amBDL - SOF
2 stops22h 40mUnited Airlines
Sun 12/217:55 amSOF - BDL
2 stops23h 03mUnited Airlines
Deal found 11/11$581
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Tue 12/97:50 pmBDL - SOF
2 stops19h 55mUnited Airlines
Mon 12/222:20 pmSOF - BDL
2 stops40h 38mUnited Airlines
Deal found 11/11$649
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/106:10 amBDL - SOF
2 stops22h 40mUnited Airlines
Mon 12/222:20 pmSOF - BDL
2 stops40h 38mUnited Airlines
Deal found 11/11$658
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/116:00 amBDL - SOF
2 stops33h 45mUnited Airlines
Wed 12/242:25 pmSOF - BDL
2 stops16h 33mUnited Airlines
Deal found 11/11$804
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/116:00 amBDL - SOF
2 stops33h 45mUnited Airlines
Tue 12/232:00 pmSOF - BDL
2 stops40h 58mUnited Airlines
Deal found 11/11$815
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/116:00 amBDL - SOF
2 stops33h 45mUnited Airlines
Sun 12/217:55 amSOF - BDL
2 stops23h 03mUnited Airlines
Deal found 11/11$821
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Tue 12/97:50 pmBDL - SOF
2 stops19h 55mUnited Airlines
Fri 12/196:10 amSOF - BDL
2 stops24h 48mUnited Airlines
Deal found 11/11$853

Cheapflights Fare Finder

 
Customize your flight search to find flights from Hartford to Sofia 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 13, 2025.
Use the filters below to find and compare flights from Hartford to Sofia that are best for you.

Fly from

Hartford

Fly to

Sofia

Route

Depart

Return

Price

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Wed 12/10

6:10 am-11:50 am

2 stops22h 40m

Sofia

Wed 12/24

2:25 pm-11:58 pm

2 stops16h 33m

$564

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Wed 12/10

6:10 am-11:50 am

2 stops22h 40m

Sofia

Thu 12/25

2:35 pm-11:58 pm

2 stops16h 23m

$564

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Tue 12/9

7:50 pm-10:45 pm

2 stops19h 55m

Sofia

Tue 12/23

2:00 pm-11:58 pm

2 stops40h 58m

$567

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Tue 12/9

7:50 pm-10:45 pm

2 stops19h 55m

Sofia

Mon 12/22

2:20 pm-11:58 pm

2 stops40h 38m

$649

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Wed 12/10

6:10 am-11:50 am

2 stops22h 40m

Sofia

Mon 12/22

2:20 pm-11:58 pm

2 stops40h 38m

$658

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Thu 12/11

6:00 am-10:45 pm

2 stops33h 45m

Sofia

Wed 12/24

2:25 pm-11:58 pm

2 stops16h 33m

$804

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Thu 12/11

6:00 am-10:45 pm

2 stops33h 45m

Sofia

Sun 12/21

7:55 am-11:58 pm

2 stops23h 03m

$821

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Wed 12/10

6:10 am-11:50 am

2 stops22h 40m

Sofia

Fri 12/19

6:10 am-11:58 pm

2 stops24h 48m

$862

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Mon 12/15

6:10 am-10:45 pm

2 stops33h 35m

Sofia

Tue 12/23

2:00 pm-11:58 pm

2 stops40h 58m

$872

HartfordSofia

BDL - SOF

BDLSOF

Hartford Bradley Intl

Mon 12/15

6:10 am-10:45 pm

2 stops33h 35m

Sofia

Sun 12/21

7:55 am-11:58 pm

2 stops23h 03m

$877

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 12 results
1
2

Best time to book a flight from Hartford to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia 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.

Cheapflights Insights

Everything you need to know about your flight from Hartford to Sofia

What is the cheapest time of day to fly from BDL to SOF?

Find hourly flight availability from Hartford to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Hartford to Sofia in the morning. If you’re flexible enough to do this you can expect to save up to 56% on your trip compared to booking a flight in the afternoon.

Related info for your journey

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

  • How long is the flight from Hartford to Sofia?

    There are many flights that can get you from Hartford to Sofia in 22h 40m. Fly via United Airlines to get the fastest option. Hartford and Sofia are separated by a distance of 4607 mi.

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

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

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

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

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

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

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Hartford to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Sofia flights
Newark to Sofia flights
LaGuardia to Sofia flights
Providence to Sofia flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.