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$584+ 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 7/16. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — DEN
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
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Cheap flight deals from Sofia to Colorado

Keep the following information in mind while searching for Sofia to Colorado flight deals. Data was last updated April 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$804
(Air France)

One-way from

$584
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$1,044
Provider with most accurate pricing for Sofia-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Sofia-Denver Intl flights.
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From Sofia to Colorado
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One-way flight from Sofia to Colorado
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 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 April 24, 2025.

This Air France deal was found by Cheapflights users on 4/23. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/57:00 amSOF - DEN
2 stops21h 15mMultiple Airlines
Sun 5/119:15 amDEN - SOF
2 stops19h 45mMultiple Airlines
Deal found 4/23$804
This United Airlines deal was found by Cheapflights users on 4/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/56:00 amSOF - DEN
2 stops21h 12mUnited Airlines
Sun 5/114:15 pmDEN - SOF
1 stop21h 45mUnited Airlines
Deal found 4/23$815
This Lufthansa deal was found by Cheapflights users on 4/23. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/56:00 amSOF - DEN
1 stop16h 45mLufthansa
Sun 5/114:15 pmDEN - SOF
1 stop17h 25mLufthansa
Deal found 4/23$817
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Sun 5/259:10 pmSOF - DEN
1 stop28h 15mAmerican Airlines
Sun 6/16:35 pmDEN - SOF
1 stop15h 35mAmerican Airlines
Deal found 4/23$836
This Austrian Airlines deal was found by Cheapflights users on 4/23. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/412:25 pmSOF - DEN
2 stops38h 14mAustrian Airlines
Sun 5/119:43 amDEN - SOF
2 stops23h 27mAustrian Airlines
Deal found 4/23$840
This SWISS deal was found by Cheapflights users on 4/23. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/271:15 pmSOF - DEN
1 stop36h 05mSWISS
Thu 6/128:20 pmDEN - SOF
2 stops28h 45mSWISS
Deal found 4/23$856

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 April 24, 2025.
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

Mon 5/5

7:00 am-7:15 pm

2 stops21h 15m

Denver Intl

Sun 5/11

9:15 am-2:00 pm

2 stops19h 45m

$804

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Mon 5/5

6:00 am-6:12 pm

2 stops21h 12m

Denver Intl

Sun 5/11

4:15 pm-11:00 pm

1 stop21h 45m

$815

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Mon 5/5

6:00 am-1:45 pm

1 stop16h 45m

Denver Intl

Sun 5/11

4:15 pm-6:40 pm

1 stop17h 25m

$817

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sun 5/25

9:10 pm-4:25 pm

1 stop28h 15m

Denver Intl

Sun 6/1

6:35 pm-7:10 pm

1 stop15h 35m

$836

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sun 5/4

12:25 pm-5:39 pm

2 stops38h 14m

Denver Intl

Sun 5/11

9:43 am-6:10 pm

2 stops23h 27m

$840

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 5/27

1:15 pm-4:20 pm

1 stop36h 05m

Denver Intl

Thu 6/12

8:20 pm-10:05 am

2 stops28h 45m

$856

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 7/16

5:45 am-11:11 pm

3 stops26h 26m

$584

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 9/24

9:30 pm-4:25 pm

1 stop27h 55m

$746

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 9/24

9:30 pm-3:44 pm

2 stops27h 14m

$747

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sat 7/19

1:30 pm-10:14 am

2 stops53h 44m

$806

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 13 results
1
2

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

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

Currently, October is the cheapest month in which you can book a flight from Sofia to Colorado (average of $197). Flying from Sofia to Colorado 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 CO?

Find hourly flight availability from Sofia to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 24, 2025.

When flying from Sofia to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Colorado by month

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

In terms of precipitation, rainfall in Colorado 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 Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

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

If weather is an important factor for your trip to Colorado, 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 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 April 24, 2025.
Read through reviews of airlines operating flights from Sofia to Colorado, such as Austrian Airlines, SWISS and Qatar Airways. 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.
Austrian Airlines
7.6
Good
780 reviews

Entertainment

6.7

Crew

8.1

Comfort

7.3

Overall

7.6

Food

6.7

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Austrian Airlines
7.6
Good
780 reviews
Austrian Airlines
7.6
Good
780 reviews

Entertainment

6.7

Crew

8.1

Comfort

7.3

Overall

7.6

Food

6.7

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
SWISS
7.5
Good
1,582 reviews
Austrian Airlines
7.6
Good
780 reviews

Entertainment

6.7

Crew

8.1

Comfort

7.3

Overall

7.6

Food

6.7

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Qatar Airways
7.4
Good
3,561 reviews
Austrian Airlines
7.6
Good
780 reviews

Entertainment

6.7

Crew

8.1

Comfort

7.3

Overall

7.6

Food

6.7

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
United Airlines
7.4
Good
8,685 reviews
Austrian Airlines
7.6
Good
780 reviews

Entertainment

6.7

Crew

8.1

Comfort

7.3

Overall

7.6

Food

6.7

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
American Airlines
7.2
Good
10,000 reviews
Austrian Airlines
7.6
Good
780 reviews

Entertainment

6.7

Crew

8.1

Comfort

7.3

Overall

7.6

Food

6.7

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.

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.

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

    $746 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on British Airways and Qatar Airways, with prices starting from $747 and $806, 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.

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

    Currently, October is the cheapest month in which you can book a flight from Sofia to Colorado (average of $197). Flying from Sofia to Colorado 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

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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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$639Average$757FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$718Average$785FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$737Average$903FlexibilityNo cancel feeOn-time76%

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