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 67% 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?

Turkish Airlines, United Airlines, and Lufthansa are the most popular carriers 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 July 2026, 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.

$693 Cheap Flights from Bulgaria to Colorado in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Bulgaria to Colorado

Round-trip

One-way

Last minute

Recent round-trip flight deals from Bulgaria to Colorado

Enter your travel dates to find the best prices.

6:30 am - 3:40 pm

SOF

DEN

18h 10m

1 stop

5:40 pm - 10:50 pm

DEN

SOF

20h 10m

1 stop

$922Lufthansa

Thu, Sep 3 - Wed, Sep 9

6:30 am - 3:40 pm

SOF

DEN

18h 10m

1 stop

5:40 pm - 6:40 pm

DEN

SOF

16h 00m

2 stops

$937Lufthansa

Thu, Sep 3 - Wed, Sep 9

6:30 am - 3:40 pm

SOF

DEN

18h 10m

1 stop

5:40 pm - 10:50 pm

DEN

SOF

20h 10m

1 stop

$939Lufthansa

Thu, Sep 3 - Wed, Sep 9

6:30 am - 6:25 pm

SOF

DEN

20h 55m

2 stops

3:40 pm - 6:40 pm

DEN

SOF

18h 00m

2 stops

$957United Airlines

Thu, Sep 3 - Wed, Sep 9

6:30 am - 3:40 pm

SOF

DEN

18h 10m

1 stop

8:00 am - 6:40 pm

DEN

SOF

25h 40m

2 stops

$958United Airlines

Thu, Sep 3 - Wed, Sep 9

6:30 am - 6:25 pm

SOF

DEN

20h 55m

2 stops

3:40 pm - 6:40 pm

DEN

SOF

18h 00m

2 stops

$968United Airlines

Thu, Sep 3 - Wed, Sep 9

6:10 am - 2:44 pm

SOF

ASE

41h 34m

2 stops

4:00 pm - 11:00 pm

ASE

SOF

22h 00m

2 stops

$998United Airlines

Thu, Aug 6 - Wed, Mar 31

6:45 pm - 12:40 pm

SOF

DEN

26h 55m

3 stops

8:10 pm - 12:40 am

DEN

SOF

19h 30m

2 stops

$1,236Multiple Airlines

Thu, Sep 3 - Wed, Sep 9

6:45 pm - 7:00 pm

SOF

DEN

33h 15m

3 stops

5:40 pm - 6:40 pm

DEN

SOF

16h 00m

2 stops

$1,280Multiple Airlines

Thu, Sep 3 - Wed, Sep 9

6:45 pm - 12:40 pm

SOF

DEN

26h 55m

3 stops

4:40 pm - 3:00 am

DEN

SOF

25h 20m

3 stops

$1,291Multiple Airlines

Thu, Sep 3 - Wed, Sep 9

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Lufthansa flights from Bulgaria to Colorado

Our best Lufthansa deals on Bulgaria to Colorado flight tickets

Lufthansa

Sep 3

SOF6:30 amSofia

18h 10m

1 stop

DEN3:40 pmDenver Intl

Sep 9

DEN5:40 pmDenver Intl

20h 10m

1 stop

SOF10:50 pmSofia

$922

Lufthansa

Sep 3

SOF6:30 amSofia

18h 10m

1 stop

DEN3:40 pmDenver Intl

Sep 9

DEN5:40 pmDenver Intl

16h 00m

2 stops

SOF6:40 pmSofia

$937

Lufthansa

Sep 3

SOF6:30 amSofia

18h 10m

1 stop

DEN3:40 pmDenver Intl

Sep 9

DEN5:40 pmDenver Intl

20h 10m

1 stop

SOF10:50 pmSofia

$939

United Airlines flights from Bulgaria to Colorado

Our best United Airlines deals on Bulgaria to Colorado flight tickets

United Airlines

Sep 3

SOF6:30 amSofia

20h 55m

2 stops

DEN6:25 pmDenver Intl

Sep 9

DEN3:40 pmDenver Intl

18h 00m

2 stops

SOF6:40 pmSofia

$957

United Airlines

Sep 3

SOF6:30 amSofia

18h 10m

1 stop

DEN3:40 pmDenver Intl

Sep 9

DEN8:00 amDenver Intl

25h 40m

2 stops

SOF6:40 pmSofia

$958

United Airlines

Sep 3

SOF6:30 amSofia

20h 55m

2 stops

DEN6:25 pmDenver Intl

Sep 9

DEN3:40 pmDenver Intl

18h 00m

2 stops

SOF6:40 pmSofia

$968

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/3

6:30 am-3:40 pm

1 stop18h 10m

Denver Intl

Wed 9/9

5:40 pm-10:50 pm

1 stop20h 10m

$922

Quickest round-trip

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/3

6:30 am-3:40 pm

1 stop18h 10m

Denver Intl

Wed 9/9

5:40 pm-6:40 pm

2 stops16h 00m

$937

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/3

6:30 am-3:40 pm

1 stop18h 10m

Denver Intl

Wed 9/9

5:40 pm-10:50 pm

1 stop20h 10m

$939

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/3

6:30 am-6:25 pm

2 stops20h 55m

Denver Intl

Wed 9/9

3:40 pm-6:40 pm

2 stops18h 00m

$957

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/3

6:30 am-3:40 pm

1 stop18h 10m

Denver Intl

Wed 9/9

8:00 am-6:40 pm

2 stops25h 40m

$958

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/3

6:30 am-6:25 pm

2 stops20h 55m

Denver Intl

Wed 9/9

3:40 pm-6:40 pm

2 stops18h 00m

$968

SofiaAspen

SOF - ASE

SOFASE

Sofia

Thu 8/6

6:10 am-2:44 pm

2 stops41h 34m

Aspen Pitkin County

Wed 3/31

4:00 pm-11:00 pm

2 stops22h 00m

$998

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/3

6:45 pm-12:40 pm

3 stops26h 55m

Denver Intl

Wed 9/9

8:10 pm-12:40 am

2 stops19h 30m

$1,236

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/3

6:45 pm-7:00 pm

3 stops33h 15m

Denver Intl

Wed 9/9

5:40 pm-6:40 pm

2 stops16h 00m

$1,280

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 9/3

6:45 pm-12:40 pm

3 stops26h 55m

Denver Intl

Wed 9/9

4:40 pm-3:00 am

3 stops25h 20m

$1,291

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 January is, on average, the cheapest month to fly to Colorado from Bulgaria, with most prices found around $0. The month of September is another great option to travel to Colorado, with average flight prices from Bulgaria averaging around $783.

Can stopping save me money on Bulgaria to Colorado flights?

You could potentially save up to 27% on your flight if you consider stops on a Bulgaria to Colorado flight.

Cheap Bulgaria to Colorado flight deals and tips

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

Fastest flight time	22h 45m
Direct flights	None

The fastest flight from Bulgaria to Colorado takes 22h 45m

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

Search flight deals

Frequently asked questions about flying 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 July 2026, 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 $704	Free Cancellation	Rating 7.4 4,452 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $773	Free Cancellation	Rating 7.4 10,042 reviews	Search United Airlines flights
Lufthansa	PriceFrom $810	Free Cancellation	Rating 6.8 8,159 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.