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Sofia

$697+ Cheap flights from Boise (BOI) 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SOF
Mar 27 — Apr 31
Fri 3/27
Fri 4/3
1 adult, Economy
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Cheap flight deals from Boise to Sofia

Cheapest flights from Boise to Sofia
Explore the most affordable flight options available from Boise to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 25, 2026.

This United Airlines deal was found by Cheapflights users on 2/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/812:04 pm
BOI
-
SOF
2 stops21h 36m
United Airlines
Wed 4/156:20 am
SOF
-
BOI
2 stops20h 45m
United Airlines
Deal found 2/21$697
This United Airlines deal was found by Cheapflights users on 2/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:39 am
BOI
-
SOF
2 stops27h 21m
United Airlines
Sun 1/106:10 am
SOF
-
BOI
2 stops24h 05m
United Airlines
Deal found 2/21$847
This KLM deal was found by Cheapflights users on 2/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/103:01 pm
BOI
-
SOF
2 stops37h 59m
KLM
Fri 4/177:00 am
SOF
-
BOI
2 stops18h 14m
KLM
Deal found 2/23$849
This American Airlines deal was found by Cheapflights users on 2/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:00 am
BOI
-
SOF
2 stops25h 50m
Multiple Airlines
Fri 4/176:10 am
SOF
-
BOI
3 stops26h 46m
Multiple Airlines
Deal found 2/23$6,311

Find flight deals from Boise to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) 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 February 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$697
(United Airlines)
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Sofia flights.
Search Deals
From Boise Air Term. Gowen Fld to Sofia
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 February 25, 2026.
Use the filters below to find and compare flights from Boise to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoiseSofia

BOI - SOF

BOISOF

Boise Air Term. Gowen Fld

Wed 4/8

12:04 pm-6:40 pm

2 stops21h 36m

Sofia

Wed 4/15

6:20 am-6:05 pm

2 stops20h 45m

$697

BoiseSofia

BOI - SOF

BOISOF

Boise Air Term. Gowen Fld

Tue 8/18

10:39 am-11:00 pm

2 stops27h 21m

Sofia

Sun 1/10

6:10 am-9:15 pm

2 stops24h 05m

$847

BoiseSofia

BOI - SOF

BOISOF

Boise Air Term. Gowen Fld

Fri 4/10

3:01 pm-2:00 pm

2 stops37h 59m

Sofia

Fri 4/17

7:00 am-4:14 pm

2 stops18h 14m

$849

BoiseSofia

BOI - SOF

BOISOF

Boise Air Term. Gowen Fld

Fri 4/10

6:00 am-4:50 pm

2 stops25h 50m

Sofia

Fri 4/17

6:10 am-11:56 pm

3 stops26h 46m

$6,311

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Sorted by cheapest first

Compare providers for flights from Boise to Sofia

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 Boise to Sofia in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Sofia 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 Boise-Sofia 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 Boise to Sofia

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

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated February 25, 2026.
Get a feel of what it's like to fly with United Airlines from Boise to Sofia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,345 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,345 reviews
United Airlines
7.4
Good
9,345 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Boise 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 Boise to Sofia?

    A quick flight from Boise to Sofia can take about 21h 36m. United Airlines provides one of the quickest options available for as low as $697. The distance from Boise to Sofia is about 5970 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise 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

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Top airline flying from Boise to Sofia

Discover the top airline that operate flights from Boise to Sofia. 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 February 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$549Average$998FlexibilityNo cancel feeOn-time69%

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