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$644+ Cheap flights from Boise (BOI) to Bulgaria

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 3/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SOF
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheap flight deals from Boise to Bulgaria

Keep the following information in mind while searching for Boise to Bulgaria flight deals. Data was last updated October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$644
(United Airlines)

Popular in

March

Cheapest in

September

Average price

$807
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Sofia flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Sofia flights.
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From Boise Air Term. Gowen Fld to Bulgaria
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Highest demand for flights based on searches. 59% potential increase in price ($2,081 potential increase over avg. RT price).
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Cheapest flight prices on average. 59% potential price decrease ($537 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Boise to Bulgaria

Best flights from Boise to Bulgaria
Discover carefully curated flight deals from Boise to Bulgaria that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 16, 2025.

This United Airlines deal was found by Cheapflights users on 10/15. 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 3/277:00 amBOI - SOF
2 stops27h 20mUnited Airlines
Tue 3/316:15 amSOF - BOI
2 stops25h 07mUnited Airlines
Deal found 10/15$644

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Bulgaria 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 October 16, 2025.
Use the filters below to find and compare flights from Boise to Bulgaria that are best for you.

Fly from

Boise

Fly to

Bulgaria

Route

Depart

Return

Price

BoiseSofia

BOI - SOF

BOISOF

Boise Air Term. Gowen Fld

Fri 3/27

7:00 am-6:20 pm

2 stops27h 20m

Sofia

Tue 3/31

6:15 am-10:22 pm

2 stops25h 07m

$644

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Best time to book a flight from Boise to Bulgaria

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

Cheapflights Insights

Everything you need to know about your flight from Boise to Bulgaria
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Bulgaria

Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated October 16, 2025.
Read reviews from past customers who have flown United Airlines from Boise to Bulgaria. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,982 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,982 reviews
United Airlines
7.4
Good
8,982 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

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

  • What airport do you fly from for flights from Boise to Bulgaria?

    Located just 3.3 mi from the city center, Boise Air Term. Gowen Fld (BOI) is the airport most travelers will use when flying to Bulgaria from Boise.

  • How long is the flight from Boise to Bulgaria?

    A quick flight from Boise to Bulgaria can take about 27h 20m. United Airlines provides one of the quickest options available for as low as $644. There are 5970 mi between Boise and Bulgaria.

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

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

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

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

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

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

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Top airline flying from Boise to Bulgaria

Discover the top airline that operate flights from Boise to Bulgaria. 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$807Average$807FlexibilityNo cancel feeOn-time69%

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