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

Lufthansa is the most popular carrier operating from Bulgaria to Colorado

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 66% 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 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 February 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.

$481 Cheap Flights from Bulgaria to Colorado in 2026

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Find the cheapest flights from Bulgaria to Colorado

Round-trip

One-way

Recent round-trip flight deals from Bulgaria to Colorado

Enter your travel dates to find the best prices.

6:10 am - 1:40 pm

SOF

DEN

16h 30m

1 stop

8:20 pm - 6:20 pm

DEN

SOF

13h 00m

1 stop

$873United Airlines

Sun, Feb 22 - Sat, Feb 28

2:10 pm - 10:33 am

SOF

DEN

29h 23m

2 stops

9:40 am - 1:05 pm

DEN

SOF

18h 25m

2 stops

$876Air Canada

Tue, Jun 23 - Tue, Jul 21

6:10 am - 10:33 am

SOF

DEN

37h 23m

2 stops

4:15 pm - 11:10 pm

DEN

SOF

21h 55m

1 stop

$877United Airlines

Tue, Jun 23 - Tue, Jul 21

6:10 am - 1:40 pm

SOF

DEN

16h 30m

1 stop

1:30 pm - 1:15 pm

DEN

SOF

14h 45m

2 stops

$878United Airlines

Sun, Feb 22 - Sat, Feb 28

6:10 am - 7:45 pm

SOF

DEN

22h 35m

2 stops

4:15 pm - 6:40 pm

DEN

SOF

17h 25m

1 stop

$882United Airlines

Tue, Jun 23 - Tue, Jul 21

6:10 am - 6:50 pm

SOF

DEN

21h 40m

1 stop

4:15 pm - 6:40 pm

DEN

SOF

17h 25m

1 stop

$885United Airlines

Tue, Jun 23 - Tue, Jul 21

6:10 am - 6:50 pm

SOF

DEN

21h 40m

1 stop

4:15 pm - 6:40 pm

DEN

SOF

17h 25m

1 stop

$886United Airlines

Tue, Jun 23 - Tue, Jul 21

6:10 am - 7:45 pm

SOF

DEN

22h 35m

2 stops

4:15 pm - 6:40 pm

DEN

SOF

17h 25m

1 stop

$888United Airlines

Tue, Jun 23 - Tue, Jul 21

6:10 am - 6:50 pm

SOF

DEN

21h 40m

1 stop

9:40 am - 11:00 am

DEN

SOF

16h 20m

2 stops

$889United Airlines

Tue, Jun 23 - Tue, Jul 21

6:10 am - 6:50 pm

SOF

DEN

21h 40m

1 stop

4:15 pm - 6:40 pm

DEN

SOF

17h 25m

1 stop

$890United Airlines

Tue, Jun 23 - Tue, Jul 21

United Airlines flights from Bulgaria to Colorado

Our best United Airlines deals on Bulgaria to Colorado flight tickets

United Airlines

Feb 22

SOF6:10 amSofia

16h 30m

1 stop

DEN1:40 pmDenver Intl

Feb 28

DEN8:20 pmDenver Intl

13h 00m

1 stop

SOF6:20 pmSofia

$873

United Airlines

Jun 23

SOF6:10 amSofia

37h 23m

2 stops

DEN10:33 amDenver Intl

Jul 21

DEN4:15 pmDenver Intl

21h 55m

1 stop

SOF11:10 pmSofia

$877

United Airlines

Feb 22

SOF6:10 amSofia

16h 30m

1 stop

DEN1:40 pmDenver Intl

Feb 28

DEN1:30 pmDenver Intl

14h 45m

2 stops

SOF1:15 pmSofia

$878

Fly from

Fly to

Route

Depart

Return

Price

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sun 2/22

6:10 am-1:40 pm

1 stop16h 30m

Denver Intl

Sat 2/28

8:20 pm-6:20 pm

1 stop13h 00m

$873

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 6/23

2:10 pm-10:33 am

2 stops29h 23m

Denver Intl

Tue 7/21

9:40 am-1:05 pm

2 stops18h 25m

$876

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 6/23

6:10 am-10:33 am

2 stops37h 23m

Denver Intl

Tue 7/21

4:15 pm-11:10 pm

1 stop21h 55m

$877

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Sun 2/22

6:10 am-1:40 pm

1 stop16h 30m

Denver Intl

Sat 2/28

1:30 pm-1:15 pm

2 stops14h 45m

$878

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 6/23

6:10 am-7:45 pm

2 stops22h 35m

Denver Intl

Tue 7/21

4:15 pm-6:40 pm

1 stop17h 25m

$882

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 6/23

6:10 am-6:50 pm

1 stop21h 40m

Denver Intl

Tue 7/21

4:15 pm-6:40 pm

1 stop17h 25m

$885

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 6/23

6:10 am-6:50 pm

1 stop21h 40m

Denver Intl

Tue 7/21

4:15 pm-6:40 pm

1 stop17h 25m

$886

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 6/23

6:10 am-7:45 pm

2 stops22h 35m

Denver Intl

Tue 7/21

4:15 pm-6:40 pm

1 stop17h 25m

$888

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 6/23

6:10 am-6:50 pm

1 stop21h 40m

Denver Intl

Tue 7/21

9:40 am-11:00 am

2 stops16h 20m

$889

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Tue 6/23

6:10 am-6:50 pm

1 stop21h 40m

Denver Intl

Tue 7/21

4:15 pm-6:40 pm

1 stop17h 25m

$890

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

Can stopping save me money on Bulgaria to Colorado flights?

You could potentially save up to 25% 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	20h 53m
Direct flights	None

The fastest flight from Bulgaria to Colorado takes 20h 53m

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

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 February 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 7.3 4,208 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $729	Free Cancellation	Rating 7.4 9,279 reviews	Search United Airlines flights
Lufthansa	PriceFrom $767	Free Cancellation	Rating 6.8 7,780 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.