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 May 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.

$963 Cheap Flights from Sofia to Colorado in 2026

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Find the cheapest flights from Sofia to Colorado

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:20 am - 1:30 pm

SOF

DEN

16h 10m

1 stop

4:05 pm - 6:40 pm

DEN

SOF

17h 35m

1 stop

$963Lufthansa

Wed, Jul 15 - Thu, Oct 15

6:20 am - 3:40 pm

SOF

DEN

18h 20m

1 stop

8:25 pm - 11:15 pm

DEN

SOF

17h 50m

1 stop

$964United Airlines

Sun, Jun 7 - Sun, Jun 14

6:20 am - 2:46 pm

SOF

DEN

17h 26m

2 stops

8:00 am - 12:10 pm

DEN

SOF

19h 10m

2 stops

$969United Airlines

Wed, Jul 15 - Thu, Oct 15

6:20 am - 7:45 pm

SOF

DEN

22h 25m

2 stops

2:50 pm - 6:40 pm

DEN

SOF

18h 50m

2 stops

$970United Airlines

Fri, Jun 12 - Tue, Aug 25

6:20 am - 3:40 pm

SOF

DEN

18h 20m

1 stop

11:30 am - 11:00 pm

DEN

SOF

26h 30m

2 stops

$973United Airlines

Sun, Jun 7 - Sun, Jun 14

6:20 am - 3:17 pm

SOF

DEN

17h 57m

2 stops

8:25 pm - 11:15 pm

DEN

SOF

17h 50m

1 stop

$974United Airlines

Mon, Jun 8 - Sun, Jun 14

6:10 am - 6:50 pm

SOF

DEN

21h 40m

1 stop

4:15 pm - 6:40 pm

DEN

SOF

17h 25m

1 stop

$976Lufthansa

Fri, Jun 12 - Tue, Aug 25

8:00 am - 11:52 pm

SOF

DEN

24h 52m

2 stops

11:30 am - 11:00 pm

DEN

SOF

26h 30m

2 stops

$994United Airlines

Sun, Jun 7 - Sun, Jun 14

8:10 pm - 7:36 pm

SOF

DEN

32h 26m

2 stops

2:22 pm - 7:20 pm

DEN

SOF

19h 58m

2 stops

$1,094British Airways

Mon, Jun 8 - Sun, Jun 14

10:55 am - 10:33 am

SOF

DEN

32h 38m

3 stops

9:40 am - 6:40 pm

DEN

SOF

24h 00m

2 stops

$1,161Multiple Airlines

Fri, Jun 12 - Tue, Aug 25

United Airlines flights from Sofia to Colorado

Our best United Airlines deals on Sofia to Colorado flight tickets

United Airlines

Jun 7

SOF6:20 amSofia

18h 20m

1 stop

DEN3:40 pmDenver Intl

Jun 14

DEN8:25 pmDenver Intl

17h 50m

1 stop

SOF11:15 pmSofia

$964

United Airlines

Jul 15

SOF6:20 amSofia

17h 26m

2 stops

DEN2:46 pmDenver Intl

Oct 15

DEN8:00 amDenver Intl

19h 10m

2 stops

SOF12:10 pmSofia

$969

United Airlines

Jun 12

SOF6:20 amSofia

22h 25m

2 stops

DEN7:45 pmDenver Intl

Aug 25

DEN2:50 pmDenver Intl

18h 50m

2 stops

SOF6:40 pmSofia

$970

Lufthansa flights from Sofia to Colorado

Our best Lufthansa deals on Sofia to Colorado flight tickets

Lufthansa

Jun 7

SOF6:20 amSofia

18h 20m

1 stop

DEN3:40 pmDenver Intl

Jun 14

DEN8:25 pmDenver Intl

17h 50m

1 stop

SOF11:15 pmSofia

$963

Lufthansa

Jun 12

SOF6:10 amSofia

21h 40m

1 stop

DEN6:50 pmDenver Intl

Aug 25

DEN4:15 pmDenver Intl

17h 25m

1 stop

SOF6:40 pmSofia

$976

Lufthansa

Jul 28

SOF6:10 amSofia

16h 35m

1 stop

DEN1:45 pmDenver Intl

Aug 2

DEN4:15 pmDenver Intl

22h 00m

1 stop

SOF11:15 pmSofia

$1,311

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 7/15

6:20 am-1:30 pm

1 stop16h 10m

Denver Intl

Thu 10/15

4:05 pm-6:40 pm

1 stop17h 35m

$963

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sun 6/7

6:20 am-3:40 pm

1 stop18h 20m

Denver Intl

Sun 6/14

8:25 pm-11:15 pm

1 stop17h 50m

$964

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 7/15

6:20 am-2:46 pm

2 stops17h 26m

Denver Intl

Thu 10/15

8:00 am-12:10 pm

2 stops19h 10m

$969

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 6/12

6:20 am-7:45 pm

2 stops22h 25m

Denver Intl

Tue 8/25

2:50 pm-6:40 pm

2 stops18h 50m

$970

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sun 6/7

6:20 am-3:40 pm

1 stop18h 20m

Denver Intl

Sun 6/14

11:30 am-11:00 pm

2 stops26h 30m

$973

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Mon 6/8

6:20 am-3:17 pm

2 stops17h 57m

Denver Intl

Sun 6/14

8:25 pm-11:15 pm

1 stop17h 50m

$974

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 6/12

6:10 am-6:50 pm

1 stop21h 40m

Denver Intl

Tue 8/25

4:15 pm-6:40 pm

1 stop17h 25m

$976

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sun 6/7

8:00 am-11:52 pm

2 stops24h 52m

Denver Intl

Sun 6/14

11:30 am-11:00 pm

2 stops26h 30m

$994

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Mon 6/8

8:10 pm-7:36 pm

2 stops32h 26m

Denver Intl

Sun 6/14

2:22 pm-7:20 pm

2 stops19h 58m

$1,094

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 6/12

10:55 am-10:33 am

3 stops32h 38m

Denver Intl

Tue 8/25

9:40 am-6:40 pm

2 stops24h 00m

$1,161

Flights are sorted by cheapest round-trip flights first.

Sorted 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

What is the cheapest month to fly to Colorado?

The month of January is, on average, the cheapest month to fly to Colorado from Sofia, with most prices found around $0. The month of November is another great option to travel to Colorado, with average flight prices from Sofia averaging around $701.

Can stopping save me money on Sofia to Colorado flights?

You could potentially save up to 27% 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	16h 10m
Direct flights	None

The fastest flight from Sofia to Colorado takes 16h 10m

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 May 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 7.4 4,395 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $773	Free Cancellation	Rating 7.4 9,751 reviews	Search United Airlines flights
Lufthansa	PriceFrom $810	Free Cancellation	Rating 6.8 8,029 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.