What is the cheapest airline that flies from Sofia to Colorado?

United Airlines is the most popular carrier operating from Sofia to Colorado

What airlines fly to Colorado?

United Airlines, Lufthansa and Turkish Airlines are the top three most popular airlines that fly to Colorado from Sofia according to our data. United Airlines is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 3 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Sofia Airport to Colorado?

Prices for flights from Sofia Airport to Colorado are updated daily.

How many operators does momondo search for flights from Sofia Airport to Colorado?

As of April 2026, there are 3 operators available to choose from for flights from Sofia Airport to Colorado.

How old do you have to be to fly from Sofia Airport to Colorado?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sofia Airport to Colorado.

What documentation or ID do you need to fly to Colorado?

The required travel and health documents for your Colorado trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Colorado. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$778 Cheap Flights from Sofia to Colorado in 2026

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Find the cheapest flights from Sofia to Colorado

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:35 am - 6:25 pm

SOF

DEN

17h 50m

1 stop

8:25 pm - 8:15 pm

DEN

SOF

14h 50m

1 stop

$905Turkish Airlines

Thu, Jul 23 - Sat, Aug 22

2:05 pm - 6:25 pm

SOF

DEN

37h 20m

1 stop

8:25 pm - 8:15 pm

DEN

SOF

14h 50m

1 stop

$911Turkish Airlines

Fri, Aug 14 - Sun, Aug 23

9:05 pm - 6:25 pm

SOF

DEN

30h 20m

1 stop

8:25 pm - 8:15 pm

DEN

SOF

14h 50m

1 stop

$932Turkish Airlines

Sat, Aug 15 - Sun, Aug 23

2:05 pm - 6:25 pm

SOF

DEN

37h 20m

1 stop

6:00 am - 8:45 am

DEN

SOF

17h 45m

2 stops

$942Turkish Airlines

Fri, Aug 14 - Sun, Aug 23

9:35 am - 6:25 pm

SOF

DEN

17h 50m

1 stop

8:25 pm - 8:45 am

DEN

SOF

27h 20m

1 stop

$949Turkish Airlines

Thu, Aug 13 - Sun, Aug 23

9:35 am - 6:25 pm

SOF

DEN

17h 50m

1 stop

8:25 pm - 8:45 am

DEN

SOF

27h 20m

1 stop

$950Turkish Airlines

Thu, Aug 13 - Sat, Aug 22

9:35 am - 6:25 pm

SOF

DEN

17h 50m

1 stop

6:00 am - 8:45 am

DEN

SOF

17h 45m

2 stops

$953Turkish Airlines

Thu, Jul 23 - Sat, Aug 22

8:00 am - 4:38 pm

SOF

DEN

17h 38m

2 stops

8:25 pm - 6:40 pm

DEN

SOF

13h 15m

1 stop

$954Multiple Airlines

Thu, Apr 16 - Wed, Apr 22

6:30 am - 1:35 pm

SOF

DEN

16h 05m

1 stop

4:05 pm - 11:15 pm

DEN

SOF

22h 10m

1 stop

$956United Airlines

Thu, Apr 16 - Wed, Apr 22

6:20 am - 1:35 pm

SOF

DEN

16h 15m

1 stop

4:05 pm - 6:40 pm

DEN

SOF

17h 35m

1 stop

$958United Airlines

Fri, Apr 17 - Thu, Apr 23

United Airlines flights from Sofia to Colorado

Our best United Airlines deals on Sofia to Colorado flight tickets

United Airlines

Apr 16

SOF6:30 amSofia

16h 05m

1 stop

DEN1:35 pmDenver Intl

Apr 22

DEN4:05 pmDenver Intl

22h 10m

1 stop

SOF11:15 pmSofia

$956

United Airlines

Apr 17

SOF6:20 amSofia

16h 15m

1 stop

DEN1:35 pmDenver Intl

Apr 23

DEN4:05 pmDenver Intl

17h 35m

1 stop

SOF6:40 pmSofia

$958

United Airlines

May 20

SOF6:20 amSofia

37h 14m

2 stops

DEN10:34 amDenver Intl

May 27

DEN9:35 amDenver Intl

16h 05m

2 stops

SOF10:40 amSofia

$962

Lufthansa flights from Sofia to Colorado

Our best Lufthansa deals on Sofia to Colorado flight tickets

Lufthansa

May 20

SOF6:20 amSofia

18h 20m

1 stop

DEN3:40 pmDenver Intl

May 27

DEN4:05 pmDenver Intl

22h 10m

1 stop

SOF11:15 pmSofia

$986

Lufthansa

Aug 15

SOF7:25 pmSofia

27h 20m

1 stop

DEN1:45 pmDenver Intl

Aug 24

DEN4:15 pmDenver Intl

17h 25m

1 stop

SOF6:40 pmSofia

$1,009

Lufthansa

Apr 16

SOF2:10 pmSofia

18h 49m

2 stops

DEN11:59 pmDenver Intl

Apr 22

DEN4:35 pmDenver Intl

17h 05m

2 stops

SOF6:40 pmSofia

$1,021

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 7/23

9:35 am-6:25 pm

1 stop17h 50m

Denver Intl

Sat 8/22

8:25 pm-8:15 pm

1 stop14h 50m

$905

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 8/14

2:05 pm-6:25 pm

1 stop37h 20m

Denver Intl

Sun 8/23

8:25 pm-8:15 pm

1 stop14h 50m

$911

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sat 8/15

9:05 pm-6:25 pm

1 stop30h 20m

Denver Intl

Sun 8/23

8:25 pm-8:15 pm

1 stop14h 50m

$932

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 8/14

2:05 pm-6:25 pm

1 stop37h 20m

Denver Intl

Sun 8/23

6:00 am-8:45 am

2 stops17h 45m

$942

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 8/13

9:35 am-6:25 pm

1 stop17h 50m

Denver Intl

Sun 8/23

8:25 pm-8:45 am

1 stop27h 20m

$949

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 8/13

9:35 am-6:25 pm

1 stop17h 50m

Denver Intl

Sat 8/22

8:25 pm-8:45 am

1 stop27h 20m

$950

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 7/23

9:35 am-6:25 pm

1 stop17h 50m

Denver Intl

Sat 8/22

6:00 am-8:45 am

2 stops17h 45m

$953

Quickest round-trip

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 4/16

8:00 am-4:38 pm

2 stops17h 38m

Denver Intl

Wed 4/22

8:25 pm-6:40 pm

1 stop13h 15m

$954

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 4/16

6:30 am-1:35 pm

1 stop16h 05m

Denver Intl

Wed 4/22

4:05 pm-11:15 pm

1 stop22h 10m

$956

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 4/17

6:20 am-1:35 pm

1 stop16h 15m

Denver Intl

Thu 4/23

4:05 pm-6:40 pm

1 stop17h 35m

$958

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

How to get the cheapest flight ticket from Sofia to Colorado

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Sofia to Colorado flights?

You could potentially save up to 20% on your flight if you consider stops on a Sofia to Colorado flight.

Cheap Sofia to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sofia to Colorado

Fastest flight time	17h 50m
Direct flights	None

The fastest flight from Sofia to Colorado takes 17h 50m

There are no direct flights from Sofia to Colorado. There are no popular flight routes from Sofia to Colorado.

Search flight deals

Frequently asked questions about flying from Sofia to Colorado

When did momondo last update prices for flights from Sofia Airport to Colorado?
Prices for flights from Sofia Airport to Colorado are updated daily.
How many operators does momondo search for flights from Sofia Airport to Colorado?
As of April 2026, there are 3 operators available to choose from for flights from Sofia Airport to Colorado.
How old do you have to be to fly from Sofia Airport to Colorado?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sofia Airport to Colorado.
What documentation or ID do you need to fly to Colorado?
The required travel and health documents for your Colorado trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Colorado. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Sofia to Colorado

Compare and see reviews for airlines that fly from Sofia to Colorado with momondo

Airline	Rating	Free Cancellation	Price
Turkish Airlines	PriceFrom $704	Free Cancellation	Rating 7.3 4,300 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $773	Free Cancellation	Rating 7.4 9,546 reviews	Search United Airlines flights
Lufthansa	PriceFrom $802	Free Cancellation	Rating 6.8 7,894 reviews	Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from Sofia to Colorado?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Sofia to Colorado for you.

Can I find flights from Sofia to Colorado with flexible booking policies on momondo?

All flight searches from Sofia to Colorado on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Sofia to Colorado?

Once all potential Sofia to Colorado flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Sofia to Colorado right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Sofia to Colorado flights. All you need is a valid email address and we will do the rest; it is that quick and easy.