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 44% 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 September 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.

$921 Cheap Flights from Sofia to Colorado in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sofia to Colorado

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:35 am - 6:25 pmSOF Sofia-DEN Denver Intl

17h 50m1 stop Istanbul

8:30 pm - 8:20 pmDEN Denver Intl-SOF Sofia

14h 50m1 stop Istanbul

$921Turkish Airlines

Sun, Oct 11 - Sat, Oct 17

9:45 pm - 6:25 pmSOF Sofia-DEN Denver Intl

28h 40m1 stop Istanbul

8:30 pm - 8:50 amDEN Denver Intl-SOF Sofia

27h 20m1 stop Istanbul

$921Turkish Airlines

Sun, Oct 25 - Sun, Nov 1

7:45 pm - 4:10 pmSOF Sofia-DEN Denver Intl

28h 25m1 stop London Heathrow

1:13 pm - 4:20 pmDEN Denver Intl-SOF Sofia

18h 07m2 stops Dallas/Fort Worth London Heathrow

$961British Airways

Sun, Oct 25 - Sun, Nov 1

9:35 am - 6:25 pmSOF Sofia-DEN Denver Intl

17h 50m1 stop Istanbul

6:00 am - 8:20 pmDEN Denver Intl-SOF Sofia

29h 20m2 stops Chicago O'Hare Intl Istanbul

$965Turkish Airlines

Sun, Oct 11 - Sat, Oct 17

5:15 pm - 5:40 pmSOF Sofia-DEN Denver Intl

33h 25m2 stops London Heathrow Dallas/Fort Worth

12:17 pm - 8:10 pmDEN Denver Intl-SOF Sofia

22h 53m2 stops Chicago O'Hare Intl London Heathrow

$967British Airways

Mon, Feb 15 - Tue, Mar 2

5:15 pm - 9:33 pmSOF Sofia-DEN Denver Intl

37h 18m2 stops London Heathrow Philadelphia

5:01 pm - 8:10 pmDEN Denver Intl-SOF Sofia

18h 09m1 stop London Heathrow

$967British Airways

Mon, Feb 15 - Tue, Mar 2

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

16h 15m1 stop Frankfurt am Main

4:15 pm - 6:20 pmDEN Denver Intl-SOF Sofia

17h 05m1 stop Munich Franz Josef Strauss

$982Lufthansa

Mon, Feb 15 - Tue, Mar 2

6:25 am - 10:45 pmSOF Sofia-DEN Denver Intl

24h 20m2 stops Frankfurt am Main Seattle/Tacoma Intl

8:00 am - 1:15 pmDEN Denver Intl-SOF Sofia

20h 15m2 stops Newark Munich Franz Josef Strauss

$998United Airlines

Sun, Oct 25 - Sun, Nov 1

6:10 am - 1:45 pmSOF Sofia-DEN Denver Intl

16h 35m1 stop Munich Franz Josef Strauss

10:20 am - 10:50 pmDEN Denver Intl-SOF Sofia

27h 30m2 stops Washington, D.C. Dulles Intl Frankfurt am Main

$1,026Lufthansa

Wed, Sep 16 - Wed, Sep 23

6:10 am - 1:45 pmSOF Sofia-DEN Denver Intl

16h 35m1 stop Munich Franz Josef Strauss

8:25 pm - 6:40 pmDEN Denver Intl-SOF Sofia

13h 15m1 stop Munich Franz Josef Strauss

$1,061United Airlines

Wed, Sep 16 - Wed, Sep 23

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Lufthansa flights from Sofia to Colorado

Our best Lufthansa deals on Sofia to Colorado flight tickets

Lufthansa

Feb 15

SOF6:25 amSofia

16h 15m

1 stop

DEN1:40 pmDenver Intl

Mar 2

DEN4:15 pmDenver Intl

17h 05m

1 stop

SOF6:20 pmSofia

$982

Lufthansa

Sep 16

SOF6:10 amSofia

16h 35m

1 stop

DEN1:45 pmDenver Intl

Sep 23

DEN10:20 amDenver Intl

27h 30m

2 stops

SOF10:50 pmSofia

$1,026

Lufthansa

Oct 11

SOF6:10 amSofia

18h 30m

2 stops

DEN3:40 pmDenver Intl

Oct 17

DEN3:45 pmDenver Intl

17h 55m

2 stops

SOF6:40 pmSofia

$1,038

United Airlines flights from Sofia to Colorado

Our best United Airlines deals on Sofia to Colorado flight tickets

United Airlines

Oct 25

SOF6:25 amSofia

24h 20m

2 stops

DEN10:45 pmDenver Intl

Nov 1

DEN8:00 amDenver Intl

20h 15m

2 stops

SOF1:15 pmSofia

$998

United Airlines

Sep 16

SOF6:10 amSofia

16h 35m

1 stop

DEN1:45 pmDenver Intl

Sep 23

DEN8:25 pmDenver Intl

13h 15m

1 stop

SOF6:40 pmSofia

$1,061

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sun 10/11

9:35 am-6:25 pm

1 stop17h 50m

Denver Intl

Sat 10/17

8:30 pm-8:20 pm

1 stop14h 50m

$921

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sun 10/25

9:45 pm-6:25 pm

1 stop28h 40m

Denver Intl

Sun 11/1

8:30 pm-8:50 am

1 stop27h 20m

$921

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sun 10/25

7:45 pm-4:10 pm

1 stop28h 25m

Denver Intl

Sun 11/1

1:13 pm-4:20 pm

2 stops18h 07m

$961

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sun 10/11

9:35 am-6:25 pm

1 stop17h 50m

Denver Intl

Sat 10/17

6:00 am-8:20 pm

2 stops29h 20m

$965

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 2/15

5:15 pm-5:40 pm

2 stops33h 25m

Denver Intl

Tue 3/2

12:17 pm-8:10 pm

2 stops22h 53m

$967

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 2/15

5:15 pm-9:33 pm

2 stops37h 18m

Denver Intl

Tue 3/2

5:01 pm-8:10 pm

1 stop18h 09m

$967

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 2/15

6:25 am-1:40 pm

1 stop16h 15m

Denver Intl

Tue 3/2

4:15 pm-6:20 pm

1 stop17h 05m

$982

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sun 10/25

6:25 am-10:45 pm

2 stops24h 20m

Denver Intl

Sun 11/1

8:00 am-1:15 pm

2 stops20h 15m

$998

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Wed 9/16

6:10 am-1:45 pm

1 stop16h 35m

Denver Intl

Wed 9/23

10:20 am-10:50 pm

2 stops27h 30m

$1,026

Quickest round-trip

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Wed 9/16

6:10 am-1:45 pm

1 stop16h 35m

Denver Intl

Wed 9/23

8:25 pm-6:40 pm

1 stop13h 15m

$1,061

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 September is another great option to travel to Colorado, with average flight prices from Sofia averaging around $818.

Can stopping save me money on Sofia to Colorado flights?

You could potentially save up to 24% 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	$921
Fastest flight time	16h 35m
Direct flights	None

The best flight deal from Sofia to Colorado found on momondo in the last 72 hours is $921

The fastest flight from Sofia to Colorado takes 16h 35m

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 September 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 $751	Free Cancellation	Rating 7.4 4,478 reviews	Search Turkish Airlines flights
Lufthansa	PriceFrom $838	Free Cancellation	Rating 6.8 8,228 reviews	Search Lufthansa flights
United Airlines	PriceFrom $838	Free Cancellation	Rating 7.4 10,152 reviews	Search United Airlines 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.