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Cheap flights from Colorado to Bulgaria from $362

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Bulgaria departing on 9/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:20 pm - 10:55 pmGJT  Grand Junction Regnl-SOF Sofia
24h 35m2 stops Denver Intl Munich Franz Josef Strauss
United Airlines Logo
6:25 am - 10:10 pmSOF  Sofia-GJT Grand Junction Regnl
24h 45m2 stops Frankfurt am Main Denver Intl
$739United Airlines
Mon, Feb 1 - Fri, Feb 5
Turkish Airlines Logo
8:30 pm - 8:45 amDEN  Denver Intl-SOF Sofia
27h 15m1 stop Istanbul
Turkish Airlines Logo
3:50 pm - 6:25 pmSOF  Sofia-DEN Denver Intl
35h 35m1 stop Istanbul
$761Turkish Airlines
Sun, Sep 20 - Mon, Oct 5
Turkish Airlines Logo
7:30 pm - 3:10 pmDEN  Denver Intl-SOF Sofia
34h 40m1 stop Istanbul
Turkish Airlines Logo
4:00 pm - 5:25 pmSOF  Sofia-DEN Denver Intl
34h 25m1 stop Istanbul
$776Turkish Airlines
Fri, Jan 22 - Tue, Jan 26
Lufthansa Logo
5:25 pm - 11:00 pmDEN  Denver Intl-SOF Sofia
20h 35m1 stop Frankfurt am Main
Lufthansa Logo
2:00 pm - 2:30 pmSOF  Sofia-DEN Denver Intl
33h 30m1 stop Munich Franz Josef Strauss
$786Lufthansa
Thu, Dec 3 - Mon, Dec 7
Turkish Airlines Logo
7:30 pm - 8:50 amDEN  Denver Intl-SOF Sofia
28h 20m1 stop Istanbul
Turkish Airlines Logo
9:45 pm - 5:25 pmSOF  Sofia-DEN Denver Intl
28h 40m1 stop Istanbul
$791Turkish Airlines
Fri, Jan 22 - Tue, Jan 26
Multiple Airlines Logo
5:25 pm - 11:00 pmDEN  Denver Intl-SOF Sofia
20h 35m1 stop Frankfurt am Main
Multiple Airlines Logo
6:45 pm - 5:46 pmSOF  Sofia-DEN Denver Intl
32h 01m2 stops Vienna Intl Toronto Pearson Intl
$797Multiple Airlines
Thu, Dec 3 - Mon, Dec 7
United Airlines Logo
6:00 am - 1:15 pmDEN  Denver Intl-SOF Sofia
22h 15m2 stops Newark Munich Franz Josef Strauss
United Airlines Logo
6:25 am - 9:31 pmSOF  Sofia-DEN Denver Intl
24h 06m2 stops Frankfurt am Main Chicago O'Hare Intl
$801United Airlines
Fri, Jan 22 - Tue, Jan 26
United Airlines Logo
8:17 am - 1:15 pmDEN  Denver Intl-SOF Sofia
19h 58m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
6:25 am - 9:25 pmSOF  Sofia-DEN Denver Intl
24h 00m2 stops Frankfurt am Main Newark
$802United Airlines
Fri, Jan 22 - Tue, Jan 26
Multiple Airlines Logo
11:20 am - 6:00 pmDEN  Denver Intl-SOF Sofia
21h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl
Multiple Airlines Logo
6:45 pm - 5:46 pmSOF  Sofia-DEN Denver Intl
32h 01m2 stops Vienna Intl Toronto Pearson Intl
$808Multiple Airlines
Thu, Dec 3 - Mon, Dec 7
Lufthansa Logo
4:15 pm - 6:20 pmDEN  Denver Intl-SOF Sofia
17h 05m1 stop Munich Franz Josef Strauss
Lufthansa Logo
2:00 pm - 2:30 pmSOF  Sofia-DEN Denver Intl
33h 30m1 stop Munich Franz Josef Strauss
$828Lufthansa
Thu, Nov 5 - Mon, Nov 9

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Air Canada flights from Colorado to Bulgaria

Our best Air Canada deals on Colorado to Bulgaria flight tickets
Air Canada
Sep 28
DEN4:17 pmDenver Intl
34h 53m
2 stops
SOF12:10 pmSofia
Oct 12
SOF2:20 pmSofia
59h 38m
2 stops
DEN4:58 pmDenver Intl
$886
Air Canada
Sep 29
DEN9:40 amDenver Intl
23h 20m
2 stops
SOF6:00 pmSofia
Oct 12
SOF2:20 pmSofia
53h 11m
2 stops
DEN10:31 amDenver Intl
$897
Air Canada
Sep 27
DEN6:05 pmDenver Intl
33h 05m
2 stops
SOF12:10 pmSofia
Oct 12
SOF2:20 pmSofia
41h 48m
2 stops
DEN11:08 pmDenver Intl
$942

Turkish Airlines flights from Colorado to Bulgaria

Our best Turkish Airlines deals on Colorado to Bulgaria flight tickets
Turkish Airlines
Sep 20
DEN8:30 pmDenver Intl
27h 15m
1 stop
SOF8:45 amSofia
Oct 5
SOF3:50 pmSofia
35h 35m
1 stop
DEN6:25 pmDenver Intl
$761
Turkish Airlines
Jan 22
DEN7:30 pmDenver Intl
34h 40m
1 stop
SOF3:10 pmSofia
Jan 26
SOF4:00 pmSofia
34h 25m
1 stop
DEN5:25 pmDenver Intl
$776
Turkish Airlines
Jan 22
DEN7:30 pmDenver Intl
28h 20m
1 stop
SOF8:50 amSofia
Jan 26
SOF9:45 pmSofia
28h 40m
1 stop
DEN5:25 pmDenver Intl
$791

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to Bulgaria that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Colorado to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Grand JunctionSofia

GJT Grand Junction Regnl - SOF Sofia

GJTSOF

Grand Junction Regnl

Mon 2/1

1:20 pm-10:55 pm

2 stops24h 35m

Sofia

Fri 2/5

6:25 am-10:10 pm

2 stops24h 45m

$739

DenverSofia

DEN Denver Intl - SOF Sofia

DENSOF

Denver Intl

Sun 9/20

8:30 pm-8:45 am

1 stop27h 15m

Sofia

Mon 10/5

3:50 pm-6:25 pm

1 stop35h 35m

$761

DenverSofia

DEN Denver Intl - SOF Sofia

DENSOF

Denver Intl

Fri 1/22

7:30 pm-3:10 pm

1 stop34h 40m

Sofia

Tue 1/26

4:00 pm-5:25 pm

1 stop34h 25m

$776

DenverSofia

DEN Denver Intl - SOF Sofia

DENSOF

Denver Intl

Thu 12/3

5:25 pm-11:00 pm

1 stop20h 35m

Sofia

Mon 12/7

2:00 pm-2:30 pm

1 stop33h 30m

$786

DenverSofia

DEN Denver Intl - SOF Sofia

DENSOF

Denver Intl

Fri 1/22

7:30 pm-8:50 am

1 stop28h 20m

Sofia

Tue 1/26

9:45 pm-5:25 pm

1 stop28h 40m

$791

DenverSofia

DEN Denver Intl - SOF Sofia

DENSOF

Denver Intl

Thu 12/3

5:25 pm-11:00 pm

1 stop20h 35m

Sofia

Mon 12/7

6:45 pm-5:46 pm

2 stops32h 01m

$797

DenverSofia

DEN Denver Intl - SOF Sofia

DENSOF

Denver Intl

Fri 1/22

6:00 am-1:15 pm

2 stops22h 15m

Sofia

Tue 1/26

6:25 am-9:31 pm

2 stops24h 06m

$801
Quickest round-trip

DenverSofia

DEN Denver Intl - SOF Sofia

DENSOF

Denver Intl

Fri 1/22

8:17 am-1:15 pm

2 stops19h 58m

Sofia

Tue 1/26

6:25 am-9:25 pm

2 stops24h 00m

$802

DenverSofia

DEN Denver Intl - SOF Sofia

DENSOF

Denver Intl

Thu 12/3

11:20 am-6:00 pm

2 stops21h 40m

Sofia

Mon 12/7

6:45 pm-5:46 pm

2 stops32h 01m

$808

DenverSofia

DEN Denver Intl - SOF Sofia

DENSOF

Denver Intl

Thu 11/5

4:15 pm-6:20 pm

1 stop17h 05m

Sofia

Mon 11/9

2:00 pm-2:30 pm

1 stop33h 30m

$828

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Bulgaria from

How to get the cheapest flight ticket from Colorado to Bulgaria

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

What is the cheapest month to fly to Bulgaria?

If you aren’t able to travel to Bulgaria during the month of November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $623.

How far in advance should I book a flight from Colorado to Bulgaria?

You are more likely to see cheaper flights to Bulgaria from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Bulgaria for around $781 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bulgaria from Colorado for as low as $622 on momondo.

Can stopping save me money on Colorado to Bulgaria flights?

You could potentially save up to 13% on your flight if you consider stops on a Colorado to Bulgaria flight.

Cheap Colorado to Bulgaria flight deals and tips

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

Fastest flight time

14h 50m

Direct flights

None
The fastest flight from Colorado to Bulgaria takes 14h 50m
There are no direct flights from Colorado to Bulgaria. There are no popular flight routes from Colorado to Bulgaria.
Search flight deals

Frequently asked questions about flying from Colorado to Bulgaria

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

    Prices for flights from Colorado to Bulgaria are updated daily.

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

  • How old do you have to be to fly from Colorado to Bulgaria?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Bulgaria.

  • What documentation or ID do you need to fly to Bulgaria?

    The necessary travel and health documents for your Bulgaria trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to Bulgaria

Compare and see reviews for airlines that fly from Colorado to Bulgaria with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $568Free CancellationRating
7.4
4,480 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $634Free CancellationRating
6.8
8,176 reviews
Search Lufthansa flights
United AirlinesPriceFrom $686Free CancellationRating
7.4
10,101 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Bulgaria?

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 Colorado to Bulgaria for you.

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

Yes. All flights to Bulgaria from Colorado on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bulgaria from Colorado.

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

Price alerts on flights to Bulgaria from Colorado are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Bulgaria trip

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