HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sofia

$298+ Cheap flights from Breckenridge, CO to Sofia (SOF)

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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SOF
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Breckenridge to Sofia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Breckenridge to Sofia are usually found in April or February, booked 48 days in advance, depart on a Thursday or Sunday and return on a Friday

Cheap flight deals from Breckenridge to Sofia

Keep the following information in mind while searching for Breckenridge to Sofia flight deals. Data was last updated September 16, 2025.

Round-trip from

$558
(British Airways)

One-way from

$298
(Kiwi.com)

Popular in

May

Cheapest in

April

Average price

$645
From Breckenridge to Sofia
Search Deals
One-way flight from Breckenridge to Sofia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Breckenridge to Sofia

Cheapest flights from Breckenridge to Sofia
Explore the most affordable flight options available from Breckenridge to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This British Airways deal was found by Cheapflights users on 9/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:25 pmDEN - SOF
1 stop13h 55mBritish Airways
Mon 11/105:25 pmSOF - DEN
1 stop31h 05mBritish Airways
Deal found 9/15$558
This British Airways deal was found by Cheapflights users on 9/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:25 pmDEN - SOF
1 stop13h 55mBritish Airways
Wed 11/59:00 pmSOF - DEN
1 stop27h 30mBritish Airways
Deal found 9/14$568
This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:20 pmDEN - SOF
1 stop34h 50mTurkish Airlines
Sat 11/810:05 amSOF - DEN
1 stop16h 30mTurkish Airlines
Deal found 9/14$575
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/311:59 pmDEN - SOF
2 stops35h 11mAmerican Airlines
Wed 11/129:00 pmSOF - DEN
2 stops34h 22mAmerican Airlines
Deal found 9/14$587
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:25 pmDEN - SOF
2 stops16h 55mLufthansa
Tue 11/116:00 amSOF - DEN
1 stop19h 00mLufthansa
Deal found 9/14$605
This British Airways deal was found by Cheapflights users on 9/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:25 pmDEN - SOF
1 stop13h 55mBritish Airways
Sat 11/812:05 pmSOF - DEN
1 stop36h 25mBritish Airways
Deal found 9/15$608
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:45 pmDEN - SOF
1 stop15h 30mLufthansa
Tue 11/116:00 amSOF - DEN
1 stop19h 00mLufthansa
Deal found 9/14$617
This British Airways deal was found by Cheapflights users on 9/16. 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 British Airways 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 9/16$618
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 10/275:20 pmDEN - SOF
1 stop17h 00mUnited Airlines
Fri 11/76:10 amSOF - DEN
1 stop16h 30mUnited Airlines
Deal found 9/15$621

Cheapflights Fare Finder

 
Customize your flight search to find flights from Breckenridge to Sofia 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 September 16, 2025.
Use the filters below to find and compare flights from Breckenridge to Sofia that are best for you.

Fly from

Breckenridge

Fly to

Sofia

Route

Depart

Return

Price

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/28

6:25 pm-8:10 pm

1 stop17h 45m

Sofia

Mon 11/10

5:25 pm-3:30 pm

1 stop31h 05m

$558

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/28

8:20 pm-9:15 am

1 stop28h 55m

Sofia

Sat 11/8

10:05 am-5:35 pm

1 stop16h 30m

$598

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 10/26

6:25 pm-4:20 pm

1 stop13h 55m

Sofia

Sun 11/9

2:30 pm-3:30 pm

1 stop34h 00m

$608

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 10/30

6:25 pm-11:15 am

1 stop32h 50m

Sofia

Mon 11/10

5:25 pm-3:30 pm

1 stop31h 05m

$608

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 10/30

6:25 pm-11:15 am

1 stop32h 50m

Sofia

Wed 11/5

9:00 pm-3:30 pm

1 stop27h 30m

$608

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/28

6:25 pm-8:10 pm

1 stop17h 45m

Sofia

Sat 11/8

12:05 pm-3:30 pm

1 stop36h 25m

$608

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 10/29

5:20 pm-10:45 pm

1 stop21h 25m

Sofia

Tue 11/11

6:00 am-4:00 pm

1 stop19h 00m

$613

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

$618

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 10/29

5:20 pm-10:45 pm

1 stop21h 25m

Sofia

Thu 11/6

6:00 am-7:55 pm

2 stops22h 55m

$621

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 9/24

8:00 am-2:30 am

3 stops57h 30m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 15 results
1
2

Best time to book a flight from Breckenridge to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia 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 Sofia

How far ahead should I book a flight from Breckenridge to Sofia?

Use this chart to determine the optimal time to book a round-trip flight from Breckenridge to Sofia. Price data was last updated on September 12, 2025.

The price you pay for your flight from Breckenridge to Sofia may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from Breckenridge to Sofia (average of $632). Flying from Breckenridge to Sofia in June is currently the most expensive (average of $1,183). 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 SOF?

Find hourly flight availability from Breckenridge to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Breckenridge to Sofia as you normally would.

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated September 16, 2025.
Read through reviews of airlines operating flights from Breckenridge to Sofia, such as United Airlines, Turkish Airlines, and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,924 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Turkish Airlines
7.3
Good
3,968 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.8
Okay
7,407 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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

  • What airport do you fly into for flights to Sofia from Breckenridge?

    Sofia (SOF) is the airport you will fly into if you book a flight from Breckenridge to Sofia. You should not have trouble finding flights to Sofia from Breckenridge; the airport handles an average of 0 inbound flights from Breckenridge per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Sofia airport from Breckenridge. It is only a 4.2 mi journey from Sofia (SOF) to Sofia’s city center.

  • How long is the flight from Breckenridge to Sofia?

    A quick flight from Breckenridge to Sofia can take about 17h 45m. British Airways provides one of the quickest options available for as low as $558. Airlines will cover a distance of 5871 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Breckenridge to Sofia 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 Sofia?

    Currently, November is the cheapest month in which you can book a flight from Breckenridge to Sofia (average of $632). Flying from Breckenridge to Sofia in June is currently the most expensive (average of $1,183). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Breckenridge to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Sofia flights
Grand Junction to Sofia flights

Top 3 airlines flying from Breckenridge to Sofia

Discover the top 3 airlines that operate flights from Breckenridge to Sofia. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$522Average$644FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$672Average$1,211FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$674Average$870FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.