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$427+ Cheap flights from Sofia (SOF) to Colorado

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — DEN
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Sofia to Colorado

Cheapest flights from Sofia to Colorado
Explore the most affordable flight options available from Sofia to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This British Airways deal was found by Cheapflights users on 1/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/12:30 pm
SOF
-
DEN
2 stops56h 27m
British Airways
Mon 3/94:43 pm
DEN
-
SOF
2 stops43h 27m
British Airways
Deal found 1/27$783
This British Airways deal was found by Cheapflights users on 1/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/259:00 pm
SOF
-
DEN
2 stops35h 54m
British Airways
Tue 3/106:25 pm
DEN
-
SOF
1 stop17h 45m
British Airways
Deal found 1/28$787
This British Airways deal was found by Cheapflights users on 1/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2812:05 pm
SOF
-
DEN
2 stops19h 32m
British Airways
Tue 3/109:10 am
DEN
-
SOF
2 stops27h 00m
British Airways
Deal found 1/28$817
This British Airways deal was found by Cheapflights users on 1/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/259:00 pm
SOF
-
DEN
1 stop27h 30m
British Airways
Sun 3/86:25 pm
DEN
-
SOF
1 stop13h 55m
British Airways
Deal found 1/27$843
This British Airways deal was found by Cheapflights users on 1/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/259:00 pm
SOF
-
DEN
1 stop27h 30m
British Airways
Mon 3/94:43 pm
DEN
-
SOF
2 stops43h 27m
British Airways
Deal found 1/27$849
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/249:35 am
SOF
-
DEN
1 stop17h 00m
Turkish Airlines
Tue 3/108:20 pm
DEN
-
SOF
1 stop16h 30m
Turkish Airlines
Deal found 1/27$852
This United Airlines deal was found by Cheapflights users on 1/27. 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 2/246:00 am
SOF
-
DEN
1 stop19h 00m
United Airlines
Wed 3/119:20 pm
DEN
-
SOF
1 stop17h 25m
United Airlines
Deal found 1/27$874
This United Airlines deal was found by Cheapflights users on 1/27. 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 2/246:00 am
SOF
-
DEN
1 stop16h 40m
United Airlines
Mon 3/911:15 am
DEN
-
SOF
2 stops23h 05m
United Airlines
Deal found 1/27$877

Find flight deals from Sofia to Colorado

Keep the following information in mind while searching for Sofia to Colorado flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$783
(British Airways)

One-way from

$427
(Kiwi.com)

Popular in

May

Cheapest in

February
Provider with most accurate pricing for Sofia-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sofia-Denver Intl flights.
Search Deals
From Sofia to Colorado
Search Deals
One-way flight from Sofia to Colorado
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sofia to Colorado 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 January 29, 2026.
Use the filters below to find and compare flights from Sofia to Colorado that are best for you.

Fly from

Sofia

Fly to

Colorado

Route

Depart

Return

Price

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sun 3/1

2:30 pm-10:40 pm

2 stops41h 10m

Denver Intl

Sun 3/8

6:25 pm-4:20 pm

1 stop13h 55m

$783

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Mon 3/2

5:25 pm-10:40 pm

2 stops38h 15m

Denver Intl

Tue 3/10

6:25 pm-8:10 pm

1 stop17h 45m

$783

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sun 3/1

2:30 pm-8:05 pm

2 stops62h 35m

Denver Intl

Mon 3/9

6:40 pm-8:10 pm

2 stops41h 30m

$787

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 2/25

9:00 pm-11:54 pm

2 stops35h 54m

Denver Intl

Tue 3/10

10:25 am-8:10 pm

2 stops25h 45m

$813

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Mon 2/23

5:25 pm-10:40 pm

2 stops38h 15m

Denver Intl

Mon 3/9

2:48 pm-8:10 pm

2 stops45h 22m

$813

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sat 2/28

12:05 pm-10:37 pm

2 stops19h 32m

Denver Intl

Tue 3/10

9:10 am-8:10 pm

2 stops27h 00m

$813

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Mon 2/23

5:25 pm-10:40 pm

2 stops38h 15m

Denver Intl

Sun 3/8

6:25 pm-4:20 pm

1 stop13h 55m

$813

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sat 2/28

12:05 pm-10:37 pm

2 stops43h 32m

Denver Intl

Sun 3/8

6:25 pm-4:20 pm

1 stop13h 55m

$813

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sat 2/28

12:05 pm-10:37 pm

2 stops19h 32m

Denver Intl

Sun 3/15

6:25 pm-4:20 pm

1 stop13h 55m

$847

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 2/3

4:45 pm-12:19 pm

3 stops52h 34m

$427

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 11 results
1
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Best time to book a flight from Sofia to Colorado

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

How much does it cost to fly round-trip from Sofia to Colorado?

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated January 29, 2026.
Peruse reviews from past customers who have flown with United Airlines, Turkish Airlines, and Lufthansa from Sofia to Colorado to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Turkish Airlines
7.3
Good
4,208 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Lufthansa
6.8
Okay
7,754 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

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

    For a flight from Sofia to Colorado, you will be flying from Sofia. Sofia (SOF) is just 4.2 mi from the center of the city.

  • How long is the flight from Sofia to Colorado?

    For as low as $783, British Airways can have you in Colorado from Sofia in 41h 10m. Airlines will cover a distance of 5871 mi.

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

    $736 is the cheapest one-way deal found within the past few days, from Turkish Airlines. You may also be able to find cheap deals on Lufthansa and United Airlines, with prices starting from $756 and $845, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sofia to Colorado 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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Alternative routes for Sofia to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Sofia to Colorado

Discover the top 3 airlines that operate flights from Sofia to Colorado. 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$704Average$860FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$729Average$792FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$767Average$1,013FlexibilityNo cancel feeOn-time76%

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