What is the cheapest airline to fly from Boise to Sofia round-trip?

United Airlines, at $577, was found to be the cheapest airline from Boise to Sofia..

What is the cheapest month to book a flight from Boise to Sofia?

Currently, November is the cheapest month in which you can book a flight from Boise to Sofia (average of $632). Flying from Boise to Sofia in June is currently the most expensive (average of $1,189). 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.

What is the cheapest day to fly from Boise to Sofia?

Travelers seeking maximum savings on their Boise to Sofia flight should consider departing on Wednesday mornings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Sofia ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Sofia when rainfall is around 1.2 in.

If weather is an important factor for your trip to Sofia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What is the cheapest day to fly round-trip from Boise to Sofia?

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 57% when planning your travel around this day of the week.

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

It’s optimal to fly from Boise to Sofia at noon. By choosing this option you can save up to 8% on the cost of your flight, compared to a flight in the afternoon.

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.

$577+ Flights from Boise to Sofia

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Cheap flight deals from Boise to Sofia

Round-trip from	$577 (United Airlines)

From Boise Air Term. Gowen Fld to Sofia

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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 julio 7, 2025.

mar. 8/198:30 amBOI - SOF

2 stops29h 30mUnited Airlines

mar. 8/266:00 amSOF - BOI

2 stops25h 21mUnited Airlines

Deal found 7/5

$577

Best flights from Boise to Sofia
Discover carefully curated flight deals from Boise to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 7, 2025.

mar. 8/198:30 amBOI - SOF

2 stops29h 30mUnited Airlines

mar. 8/266:00 amSOF - BOI

2 stops25h 21mUnited Airlines

Deal found 7/5

$577

Last-minute flights from Boise to Sofia
Discover last-minute flight deals from Boise to Sofia. Data last updated julio 7, 2025 and is based on user searches.

mar. 8/198:30 amBOI - SOF

2 stops29h 30mUnited Airlines

mar. 8/266:00 amSOF - BOI

2 stops25h 21mUnited Airlines

Deal found 7/5

$577

Cheapflights Fare Finder

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

mar. 8/19

8:30 am-11:00 pm

2 stops29h 30m

Sofia

mar. 8/26

6:00 am-10:21 pm

2 stops25h 21m

$577

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/5

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 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

8,844 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,844 reviews

United Airlines

7.4

Good

8,844 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

What is the cheapest airline to fly from Boise to Sofia round-trip?
United Airlines, at $577, was found to be the cheapest airline from Boise to Sofia..
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.
What is the cheapest month to book a flight from Boise to Sofia?
Currently, November is the cheapest month in which you can book a flight from Boise to Sofia (average of $632). Flying from Boise to Sofia in June is currently the most expensive (average of $1,189). 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.

See more FAQs

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Top airline flying from Boise to Sofia

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$807	Average$807	FlexibilityNo cancel fee	On-time69%

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$577+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boise to Sofia with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Boise to Sofia

Round-trip from

Find flight deals from Boise to Sofia

Cheapest flights from Boise to SofiaExplore 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 julio 7, 2025.

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 julio 7, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boise to Sofia that are best for you.

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.

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 julio 7, 2025.

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.

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.

What is the cheapest airline to fly from Boise to Sofia round-trip?

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

How can I find direct flights from Boise to Sofia?

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

What is the cheapest month to book a flight from Boise to Sofia?

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 Boise to Sofia

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Boise to Sofia

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Book with Flexibility

Travel Smart

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 julio 7, 2025.