What airlines fly to Colorado?

United Airlines, Lufthansa and Turkish Airlines are the top three most popular airlines that fly to Colorado from Bulgaria according to our data. United Airlines is the first choice among our users, with 47% 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.

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

Lufthansa is the most popular carrier operating from Bulgaria to Colorado

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

Prices for flights from Bulgaria to Colorado were last updated today.

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

As of August 2025, there are 3 operators available to choose from for flights from Bulgaria to Colorado.

How old do you have to be to fly from Bulgaria 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 Bulgaria to Colorado.

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

The travel and health documents you'll need for your trip to Colorado may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Colorado. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$600 Cheap Flights from Bulgaria to Colorado in 2025

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Find the cheapest flights from Bulgaria to Colorado

Round-trip

One-way

Last minute

Recent round-trip flight deals from Bulgaria to Colorado

9:25 am - 5:55 pmSOF-DEN

17h 30m1 stop

7:50 pm - 8:35 amDEN-SOF

27h 45m1 stop

$734Turkish Airlines

Find Deal

Tue, Aug 26 - Fri, Oct 3

3:35 pm - 5:55 pmSOF-DEN

35h 20m1 stop

8:20 pm - 8:50 pmDEN-SOF

16h 30m1 stop

$747Turkish Airlines

Find Deal

Thu, Sep 4 - Sat, Oct 25

9:25 am - 5:55 pmSOF-DEN

17h 30m1 stop

7:50 pm - 2:45 pmDEN-SOF

33h 55m1 stop

$751Turkish Airlines

Find Deal

Tue, Aug 26 - Sun, Sep 28

6:15 am - 3:35 pmSOF-DEN

18h 20m1 stop

9:36 am - 2:10 pmDEN-SOF

19h 34m2 stops

$757United Airlines

Find Deal

Wed, Sep 3 - Sat, Oct 25

6:15 am - 1:35 pmSOF-DEN

16h 20m1 stop

3:50 pm - 5:50 pmDEN-SOF

17h 00m1 stop

$759United Airlines

Find Deal

Fri, Sep 5 - Wed, Oct 22

6:15 am - 6:18 pmSOF-DEN

21h 03m2 stops

5:36 pm - 12:00 pmDEN-SOF

33h 24m2 stops

$764Air Canada

Find Deal

Fri, Sep 5 - Mon, Oct 20

6:00 am - 1:45 pmSOF-DEN

16h 45m1 stop

11:15 am - 12:00 pmDEN-SOF

15h 45m2 stops

$769Lufthansa

Find Deal

Tue, Sep 2 - Tue, Oct 21

7:00 am - 6:46 pmSOF-DEN

20h 46m2 stops

10:24 am - 2:00 pmDEN-SOF

18h 36m2 stops

$783

Find Deal

Wed, Sep 3 - Tue, Oct 21

6:15 am - 3:35 pmSOF-DEN

18h 20m1 stop

4:15 pm - 11:00 pmDEN-SOF

21h 45m1 stop

$797Lufthansa

Find Deal

Wed, Aug 27 - Wed, Oct 1

6:15 am - 8:42 amSOF-DEN

35h 27m2 stops

5:30 pm - 12:00 pmDEN-SOF

33h 30m2 stops

$857Air Canada

Find Deal

Wed, Sep 3 - Mon, Oct 20

Turkish Airlines flights from Bulgaria to Colorado

Our best Turkish Airlines deals on Bulgaria to Colorado flight tickets

Turkish Airlines

Aug 26

SOF9:25 amSofia

17h 30m

1 stop

DEN5:55 pmDenver Intl

Oct 3

DEN7:50 pmDenver Intl

27h 45m

1 stop

SOF8:35 amSofia

$734

Find similar

Turkish Airlines

Sep 4

SOF3:35 pmSofia

35h 20m

1 stop

DEN5:55 pmDenver Intl

Oct 25

DEN8:20 pmDenver Intl

16h 30m

1 stop

SOF8:50 pmSofia

$747

Find similar

Turkish Airlines

Aug 26

SOF9:25 amSofia

17h 30m

1 stop

DEN5:55 pmDenver Intl

Sep 28

DEN7:50 pmDenver Intl

33h 55m

1 stop

SOF2:45 pmSofia

$751

Find similar

United Airlines flights from Bulgaria to Colorado

Our best United Airlines deals on Bulgaria to Colorado flight tickets

United Airlines

Sep 3

SOF6:15 amSofia

18h 20m

1 stop

DEN3:35 pmDenver Intl

Oct 25

DEN9:36 amDenver Intl

19h 34m

2 stops

SOF2:10 pmSofia

$757

Find similar

United Airlines

Sep 5

SOF6:15 amSofia

16h 20m

1 stop

DEN1:35 pmDenver Intl

Oct 22

DEN3:50 pmDenver Intl

17h 00m

1 stop

SOF5:50 pmSofia

$759

Find similar

United Airlines

Sep 3

SOF6:15 amSofia

20h 45m

2 stops

DEN6:00 pmDenver Intl

Oct 22

DEN7:46 amDenver Intl

19h 14m

2 stops

SOF12:00 pmSofia

$762

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 8/26

9:25 am-5:55 pm

1 stop17h 30m

Denver Intl

Fri 10/3

7:50 pm-8:35 am

1 stop27h 45m

$734

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/4

3:35 pm-5:55 pm

1 stop35h 20m

Denver Intl

Sat 10/25

8:20 pm-8:50 pm

1 stop16h 30m

$747

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 8/26

9:25 am-5:55 pm

1 stop17h 30m

Denver Intl

Sun 9/28

7:50 pm-2:45 pm

1 stop33h 55m

$751

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 9/3

6:15 am-3:35 pm

1 stop18h 20m

Denver Intl

Sat 10/25

9:36 am-2:10 pm

2 stops19h 34m

$757

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 9/5

6:15 am-1:35 pm

1 stop16h 20m

Denver Intl

Wed 10/22

3:50 pm-5:50 pm

1 stop17h 00m

$759

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Fri 9/5

6:15 am-6:18 pm

2 stops21h 03m

Denver Intl

Mon 10/20

5:36 pm-12:00 pm

2 stops33h 24m

$764

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 9/2

6:00 am-1:45 pm

1 stop16h 45m

Denver Intl

Tue 10/21

11:15 am-12:00 pm

2 stops15h 45m

$769

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 9/3

7:00 am-6:46 pm

2 stops20h 46m

Denver Intl

Tue 10/21

10:24 am-2:00 pm

2 stops18h 36m

$783

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 8/27

6:15 am-3:35 pm

1 stop18h 20m

Denver Intl

Wed 10/1

4:15 pm-11:00 pm

1 stop21h 45m

$797

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Wed 9/3

6:15 am-8:42 am

2 stops35h 27m

Denver Intl

Mon 10/20

5:30 pm-12:00 pm

2 stops33h 30m

$857

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 Bulgaria 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 November is, on average, the cheapest month to fly to Colorado from Bulgaria, with most prices found around $652. The month of April is another great option to travel to Colorado, with average flight prices from Bulgaria averaging around $709.

What is the cheapest day to depart on your flight to Colorado?

The cheapest day to depart from Bulgaria to Colorado is on a Friday when prices can be found for as low as $778. On the other hand, Thursday is the most expensive day to depart from Bulgaria because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $972.

What is the cheapest time of day to depart on your flight to Colorado?

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $691. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $816 per ticket.

Cheap Bulgaria to Colorado flight deals and tips

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

Best Price Found	$600
Fastest flight time	16h 20m
Direct flights	None
Airports in Colorado	2 airports

The best one-way flight to Colorado from Bulgaria in the past 72 hours is $600. The best round-trip flight deal from Bulgaria to Colorado found on momondo in the last 72 hours is $734.

The fastest flight from Bulgaria to Colorado takes 16h 20m

There are no direct flights from Bulgaria to Colorado. Popular non-direct route for this connection is Sofia Airport - Denver Intl Airport.

There are 2 airports near Colorado: Aspen Pitkin County (ASE), Denver Intl (DEN)

Search flight deals

When did momondo last update prices for flights from Bulgaria to Colorado?
Prices for flights from Bulgaria to Colorado were last updated today.
How many operators does momondo search for flights from Bulgaria to Colorado?
As of August 2025, there are 3 operators available to choose from for flights from Bulgaria to Colorado.
How old do you have to be to fly from Bulgaria 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 Bulgaria to Colorado.
What documentation or ID do you need to fly to Colorado?
The travel and health documents you'll need for your trip to Colorado may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Colorado. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Bulgaria to Colorado

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

Airline	Rating	Free Cancellation	Price
Turkish Airlines	PriceFrom $639	Free Cancellation	Rating 7.3 3,940 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $729	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights
Lufthansa	PriceFrom $730	Free Cancellation	Rating 6.8 7,317 reviews	Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from Bulgaria 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 Bulgaria to Colorado for you.

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

momondo does allow users to show only those flights to Colorado from Bulgaria which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Bulgaria and Colorado by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Colorado from Bulgaria. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.