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$741+ Cheap flights from Sofia (SOF) to Denver (DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — DEN
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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1. Tell us where you want to go

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Cheap flight deals from Sofia to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Denver (DEN). 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 April 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$896
(United Airlines)

One-way from

$741
(Cheapflightsfares)

Popular in

August

Cheapest in

November

Average price

$1,044
Provider with most accurate pricing for Sofia-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sofia-Denver Intl flights.
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From Sofia to Denver Intl
Search Deals
One-way flight from Sofia to Denver Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Sofia to Denver

Cheapest flights from Sofia to Denver
Explore the most affordable flight options available from Sofia to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This United Airlines deal was found by Cheapflights users on 4/29. 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 6/136:15 amSOF - DEN
2 stops21h 05mUnited Airlines
Fri 6/2011:25 amDEN - SOF
2 stops15h 35mUnited Airlines
Deal found 4/29$896

Cheapflights Fare Finder

Customize your flight search to find flights from Sofia to Denver 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 April 30, 2025.
Use the filters below to find and compare flights from Sofia to Denver that are best for you.

Fly from

Sofia

Fly to

Denver

Route

Depart

Return

Price

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 6/13

6:15 am-6:20 pm

2 stops21h 05m

Denver Intl

Fri 6/20

11:25 am-12:00 pm

2 stops15h 35m

$896

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 9/24

9:30 pm-5:39 pm

2 stops29h 09m

$741

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 9/24

9:30 pm-4:25 pm

1 stop27h 55m

$744

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Mon 8/25

1:30 pm-10:56 pm

2 stops42h 26m

$745

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 8/6

6:00 am-1:45 pm

1 stop16h 45m

$839

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 8/1

9:25 am-5:55 pm

1 stop17h 30m

$870

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Compare providers for flights from Sofia to Denver

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 Sofia to Denver in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 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 Sofia-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sofia-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sofia-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sofia-Denver flights, Cheapflights users trust eDreams the most. eDreams 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 Sofia-Denver 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 Sofia to Denver

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

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

Currently, October is the cheapest month in which you can book a flight from Sofia to Denver (average of $197). Flying from Sofia to Denver in March is currently the most expensive (average of $278). 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 time of day to fly from SOF to DEN?

Find hourly flight availability from Sofia to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 16% on flights from Sofia to Denver by exploring options for tickets in the afternoon.

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated April 30, 2025.
Qatar Airways
7.4
Good
3,563 reviews

Entertainment

7.4

Comfort

7.4

Crew

7.9

Overall

7.4

Boarding

7.5

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.
Qatar Airways
7.4
Good
3,563 reviews
Qatar Airways
7.4
Good
3,563 reviews

Entertainment

7.4

Comfort

7.4

Crew

7.9

Overall

7.4

Boarding

7.5

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.
United Airlines
7.4
Good
8,696 reviews
Qatar Airways
7.4
Good
3,563 reviews

Entertainment

7.4

Comfort

7.4

Crew

7.9

Overall

7.4

Boarding

7.5

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.
Turkish Airlines
7.3
Good
3,788 reviews
Qatar Airways
7.4
Good
3,563 reviews

Entertainment

7.4

Comfort

7.4

Crew

7.9

Overall

7.4

Boarding

7.5

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.
American Airlines
7.2
Good
10,000 reviews
Qatar Airways
7.4
Good
3,563 reviews

Entertainment

7.4

Comfort

7.4

Crew

7.9

Overall

7.4

Boarding

7.5

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.
Lufthansa
6.7
Okay
7,044 reviews
Qatar Airways
7.4
Good
3,563 reviews

Entertainment

7.4

Comfort

7.4

Crew

7.9

Overall

7.4

Boarding

7.5

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.

Related info for your journey

Find useful and relevant information for your journey from Sofia to Denver. 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 Sofia to Denver round-trip?

    United Airlines, at $896, was found to be the cheapest airline from Sofia to Denver..

  • What are the cheapest airlines to fly from Sofia to Denver one-way?

    $741 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on American Airlines and Qatar Airways, with prices starting from $744 and $745, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sofia to Denver 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 Sofia to Denver?

    Currently, October is the cheapest month in which you can book a flight from Sofia to Denver (average of $197). Flying from Sofia to Denver in March is currently the most expensive (average of $278). 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

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Silverthorne
Brighton
Golden
Thornton
Greeley
Frisco
Grand Lake
Broomfield
Central City
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs
Limon

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Top 3 airlines flying from Sofia to Denver

Discover the top 3 airlines that operate flights from Sofia to Denver. 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$639Average$777FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$729Average$770FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$737Average$903FlexibilityNo cancel feeOn-time76%

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