What airlines fly to Colorado?

Lufthansa, United Airlines and Turkish Airlines are the top three most popular airlines that fly to Colorado from Sofia according to our data. Lufthansa is the first choice among our users, with 38% 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 October 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.

$753 Cheap Flights from Sofia to Colorado in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

9:30 am - 5:25 pmSOF Sofia-DEN Denver Intl

16h 55m1 stop Istanbul

7:30 pm - 8:55 pmDEN Denver Intl-SOF Sofia

16h 25m1 stop Istanbul

$854Turkish Airlines

Mon, Nov 23 - Mon, Nov 30

9:30 am - 9:48 pmSOF Sofia-DEN Denver Intl

21h 18m2 stops Istanbul Chicago O'Hare Intl

7:30 pm - 8:55 pmDEN Denver Intl-SOF Sofia

16h 25m1 stop Istanbul

$897Turkish Airlines

Mon, Nov 23 - Mon, Nov 30

9:30 am - 5:25 pmSOF Sofia-DEN Denver Intl

16h 55m1 stop Istanbul

7:30 pm - 3:10 pmDEN Denver Intl-SOF Sofia

34h 40m1 stop Istanbul

$902Turkish Airlines

Sun, Nov 8 - Sun, Nov 15

9:30 am - 10:44 pmSOF Sofia-DEN Denver Intl

22h 14m2 stops Istanbul Chicago O'Hare Intl

7:30 pm - 8:55 pmDEN Denver Intl-SOF Sofia

16h 25m1 stop Istanbul

$915Multiple Airlines

Mon, Nov 23 - Mon, Nov 30

6:25 am - 1:40 pmSOF Sofia-DEN Denver Intl

16h 15m1 stop Frankfurt am Main

8:30 pm - 10:55 pmDEN Denver Intl-SOF Sofia

17h 25m1 stop Munich Franz Josef Strauss

$974United Airlines

Mon, Nov 23 - Mon, Nov 30

7:45 pm - 10:54 pmSOF Sofia-DEN Denver Intl

36h 09m2 stops London Heathrow Chicago O'Hare Intl

5:01 pm - 4:20 pmDEN Denver Intl-SOF Sofia

14h 19m1 stop London Heathrow

$976British Airways

Sun, Nov 8 - Sun, Nov 15

6:25 am - 8:37 amSOF Sofia-DEN Denver Intl

35h 12m2 stops Frankfurt am Main Calgary

1:30 pm - 11:00 pmDEN Denver Intl-SOF Sofia

24h 30m2 stops Toronto Pearson Intl Frankfurt am Main

$981Multiple Airlines

Mon, Nov 23 - Mon, Nov 30

6:00 am - 2:30 pmSOF Sofia-DEN Denver Intl

17h 30m1 stop Munich Franz Josef Strauss

4:15 pm - 10:55 pmDEN Denver Intl-SOF Sofia

21h 40m1 stop Munich Franz Josef Strauss

$985United Airlines

Sun, Nov 8 - Sun, Nov 15

2:00 pm - 4:57 pmSOF Sofia-ASE Aspen Pitkin County

35h 57m2 stops Munich Franz Josef Strauss Denver Intl

1:30 pm - 10:55 pmASE Aspen Pitkin County-SOF Sofia

24h 25m2 stops Denver Intl Munich Franz Josef Strauss

$1,360Lufthansa

Thu, Nov 5 - Mon, Nov 9

6:00 am - 6:27 pmSOF Sofia-ASE Aspen Pitkin County

21h 27m3 stops Munich Franz Josef Strauss Frankfurt am Main Denver Intl

8:45 am - 11:50 amASE Aspen Pitkin County-SOF Sofia

18h 05m3 stops Denver Intl Chicago O'Hare Intl Vienna Intl

$1,645United Airlines

Thu, Nov 5 - Mon, Nov 9

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United Airlines flights from Sofia to Colorado

Our best United Airlines deals on Sofia to Colorado flight tickets

United Airlines

Nov 23

SOF6:25 amSofia

16h 15m

1 stop

DEN1:40 pmDenver Intl

Nov 30

DEN8:30 pmDenver Intl

17h 25m

1 stop

SOF10:55 pmSofia

$974

United Airlines

Nov 8

SOF6:00 amSofia

17h 30m

1 stop

DEN2:30 pmDenver Intl

Nov 15

DEN4:15 pmDenver Intl

21h 40m

1 stop

SOF10:55 pmSofia

$985

United Airlines

Nov 5

SOF6:00 amSofia

21h 27m

3 stops

ASE6:27 pmAspen Pitkin County

Nov 9

ASE8:45 amAspen Pitkin County

18h 05m

3 stops

SOF11:50 amSofia

$1,645

Turkish Airlines flights from Sofia to Colorado

Our best Turkish Airlines deals on Sofia to Colorado flight tickets

Turkish Airlines

Nov 23

SOF9:30 amSofia

16h 55m

1 stop

DEN5:25 pmDenver Intl

Nov 30

DEN7:30 pmDenver Intl

16h 25m

1 stop

SOF8:55 pmSofia

$854

Turkish Airlines

Nov 23

SOF9:30 amSofia

21h 18m

2 stops

DEN9:48 pmDenver Intl

Nov 30

DEN7:30 pmDenver Intl

16h 25m

1 stop

SOF8:55 pmSofia

$897

Turkish Airlines

Nov 8

SOF9:30 amSofia

16h 55m

1 stop

DEN5:25 pmDenver Intl

Nov 15

DEN7:30 pmDenver Intl

34h 40m

1 stop

SOF3:10 pmSofia

$902

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 11/23

9:30 am-5:25 pm

1 stop16h 55m

Denver Intl

Mon 11/30

7:30 pm-8:55 pm

1 stop16h 25m

$854

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 11/23

9:30 am-9:48 pm

2 stops21h 18m

Denver Intl

Mon 11/30

7:30 pm-8:55 pm

1 stop16h 25m

$897

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sun 11/8

9:30 am-5:25 pm

1 stop16h 55m

Denver Intl

Sun 11/15

7:30 pm-3:10 pm

1 stop34h 40m

$902

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 11/23

9:30 am-10:44 pm

2 stops22h 14m

Denver Intl

Mon 11/30

7:30 pm-8:55 pm

1 stop16h 25m

$915

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 11/23

6:25 am-1:40 pm

1 stop16h 15m

Denver Intl

Mon 11/30

8:30 pm-10:55 pm

1 stop17h 25m

$974

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sun 11/8

7:45 pm-10:54 pm

2 stops36h 09m

Denver Intl

Sun 11/15

5:01 pm-4:20 pm

1 stop14h 19m

$976

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 11/23

6:25 am-8:37 am

2 stops35h 12m

Denver Intl

Mon 11/30

1:30 pm-11:00 pm

2 stops24h 30m

$981

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sun 11/8

6:00 am-2:30 pm

1 stop17h 30m

Denver Intl

Sun 11/15

4:15 pm-10:55 pm

1 stop21h 40m

$985

SofiaAspen

SOF Sofia - ASE Aspen Pitkin County

SOFASE

Sofia

Thu 11/5

2:00 pm-4:57 pm

2 stops35h 57m

Aspen Pitkin County

Mon 11/9

1:30 pm-10:55 pm

2 stops24h 25m

$1,360

SofiaAspen

SOF Sofia - ASE Aspen Pitkin County

SOFASE

Sofia

Thu 11/5

6:00 am-6:27 pm

3 stops21h 27m

Aspen Pitkin County

Mon 11/9

8:45 am-11:50 am

3 stops18h 05m

$1,645

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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

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 April is another great option to travel to Colorado, with average flight prices from Sofia averaging around $849.

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

Best Price Found	$753
Fastest flight time	16h 55m
Direct flights	None

The best one-way flight to Colorado from Sofia in the past 72 hours is $753. The best round-trip flight deal from Sofia to Colorado found on momondo in the last 72 hours is $854.

The fastest flight from Sofia to Colorado takes 16h 55m

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 October 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 $820	Free Cancellation	Rating 7.4 4,459 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $838	Free Cancellation	Rating 7.3 10,391 reviews	Search United Airlines flights
Lufthansa	PriceFrom $849	Free Cancellation	Rating 6.8 8,284 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.