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Bulgaria

$295+ Cheap flights from Breckenridge, CO to Bulgaria

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SOF
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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Cheap flight deals from Breckenridge to Bulgaria

Keep the following information in mind while searching for Breckenridge to Bulgaria flight deals. Data was last updated August 7, 2025.

Round-trip from

$600
(Lufthansa)

One-way from

$295
(Kiwi.com)

Popular in

May

Cheapest in

April

Average price

$734
From Breckenridge to Bulgaria
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One-way flight from Breckenridge to Bulgaria
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Highest demand for flights based on searches. 8% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Breckenridge to Bulgaria

Cheapest flights from Breckenridge to Bulgaria
Explore the most affordable flight options available from Breckenridge to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2025.

This Lufthansa deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/84:15 pmDEN - SOF
1 stop17h 25mLufthansa
Wed 11/56:15 amSOF - DEN
1 stop18h 45mLufthansa
Deal found 8/5$600
This Lufthansa deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/75:59 pmDEN - SOF
1 stop14h 51mLufthansa
Wed 11/56:15 amSOF - DEN
1 stop18h 45mLufthansa
Deal found 8/5$604
This oojo deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:20 pmDEN - SOF
1 stop16h 30mTurkish Airlines
Sat 11/810:05 amSOF - DEN
1 stop16h 30mTurkish Airlines
Deal found 8/7$605
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/84:15 pmDEN - SOF
1 stop21h 45mUnited Airlines
Wed 11/52:30 pmSOF - DEN
2 stops28h 53mUnited Airlines
Deal found 8/5$607
This Air Canada deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:05 pmDEN - SOF
2 stops38h 45mAir Canada
Wed 11/52:30 pmSOF - DEN
2 stops28h 53mAir Canada
Deal found 8/5$610
This Lufthansa deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/84:15 pmDEN - SOF
1 stop17h 25mLufthansa
Mon 11/106:50 pmSOF - DEN
1 stop30h 10mLufthansa
Deal found 8/5$619
This Booking.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/111:15 amDEN - SOF
2 stops17h 10mMultiple Airlines
Fri 12/196:05 amSOF - DEN
2 stops26h 38mMultiple Airlines
Deal found 8/5$620
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/79:40 amDEN - SOF
2 stops23h 10mUnited Airlines
Mon 11/102:20 pmSOF - DEN
1 stop34h 40mUnited Airlines
Deal found 8/5$623
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/81:25 pmDEN - SOF
2 stops19h 25mUnited Airlines
Mon 11/102:20 pmSOF - DEN
1 stop34h 40mUnited Airlines
Deal found 8/5$628
This Gurufare deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:25 pmDEN - SOF
1 stop17h 45mBritish Airways
Sun 11/92:30 pmSOF - DEN
1 stop34h 00mBritish Airways
Deal found 8/7$642
This Ovago deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:04 pmDEN - SOF
2 stops35h 26mBritish Airways
Sat 11/812:05 pmSOF - DEN
1 stop36h 25mBritish Airways
Deal found 8/5$646
This Austrian Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:25 pmDEN - VAR
2 stops40h 50mAustrian Airlines
Tue 11/114:00 pmVAR - DEN
2 stops34h 45mAustrian Airlines
Deal found 8/6$1,454

Cheapflights Fare Finder

 
Customize your flight search to find flights from Breckenridge 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, Cheapflights users made 2,558,603 searches. Data last updated August 7, 2025.
Use the filters below to find and compare flights from Breckenridge to Bulgaria that are best for you.

Fly from

Breckenridge

Fly to

Bulgaria

Route

Depart

Return

Price

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 10/8

4:15 pm-11:00 pm

1 stop21h 45m

Sofia

Tue 11/4

6:00 am-4:00 pm

1 stop19h 00m

$600

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/7

5:59 pm-5:50 pm

1 stop14h 51m

Sofia

Fri 11/7

6:15 am-7:55 pm

2 stops22h 40m

$604

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/28

8:20 pm-8:50 pm

1 stop16h 30m

Sofia

Sat 11/8

10:05 am-5:35 pm

1 stop16h 30m

$605

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 10/8

4:15 pm-11:00 pm

1 stop21h 45m

Sofia

Wed 11/5

2:30 pm-10:23 am

2 stops28h 53m

$607

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 10/6

6:05 pm-5:50 pm

2 stops38h 45m

Sofia

Wed 11/5

2:30 pm-10:23 am

2 stops28h 53m

$610

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 10/8

4:15 pm-6:40 pm

1 stop17h 25m

Sofia

Mon 11/10

6:50 pm-4:00 pm

1 stop30h 10m

$619

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 12/1

4:20 pm-10:45 pm

1 stop21h 25m

Sofia

Fri 12/19

6:05 am-11:43 pm

2 stops26h 38m

$620

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/7

9:40 am-5:50 pm

2 stops23h 10m

Sofia

Mon 11/10

2:20 pm-4:00 pm

1 stop34h 40m

$623

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 10/8

1:25 pm-5:50 pm

2 stops19h 25m

Sofia

Mon 11/10

2:20 pm-4:00 pm

1 stop34h 40m

$628

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/28

6:25 pm-8:10 pm

1 stop17h 45m

Sofia

Sun 11/9

2:30 pm-3:30 pm

1 stop34h 00m

$642

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Breckenridge to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria from Breckenridge with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Breckenridge to Bulgaria

What is the cheapest month to book a flight from Breckenridge to Bulgaria?

Currently, November is the cheapest month in which you can book a flight from Breckenridge to Bulgaria (average of $632). Flying from Breckenridge to Bulgaria in June is currently the most expensive (average of $1,186). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BK9 to BG?

Find hourly flight availability from Breckenridge to Bulgaria. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 7, 2025.

When flying from Breckenridge to Bulgaria, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Bulgaria

Get insights into the airlines that provide service to Bulgaria. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bulgaria. Reviews last updated August 7, 2025.
Get a feel of what it's like to fly with Austrian Airlines, SWISS, and United Airlines from Breckenridge to Bulgaria by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
824 reviews

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
824 reviews
Austrian Airlines
7.6
Good
824 reviews

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
SWISS
7.6
Good
1,692 reviews
Austrian Airlines
7.6
Good
824 reviews

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
United Airlines
7.4
Good
8,916 reviews
Austrian Airlines
7.6
Good
824 reviews

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Turkish Airlines
7.3
Good
3,934 reviews
Austrian Airlines
7.6
Good
824 reviews

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Air Canada
7.1
Good
9,899 reviews
Austrian Airlines
7.6
Good
824 reviews

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Related info for your journey

Find useful and relevant information for your journey from Breckenridge to Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Breckenridge to Bulgaria that include hotel bookings?

    Yes. In addition to deals on Breckenridge to Bulgaria flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Breckenridge to Bulgaria?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Breckenridge to Bulgaria.

  • Can I find deals for business class flights from Breckenridge to Bulgaria?

    Yes. Cheapflights offers flight deals from Breckenridge to Bulgaria by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Breckenridge to Bulgaria?

    Currently, November is the cheapest month in which you can book a flight from Breckenridge to Bulgaria (average of $632). Flying from Breckenridge to Bulgaria in June is currently the most expensive (average of $1,186). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Breckenridge to Bulgaria

Discover the top 3 airlines that operate flights from Breckenridge to Bulgaria. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$522Average$868FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$653Average$857FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$672Average$1,173FlexibilityNo cancel feeOn-time76%

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