$562+ Cheap flights from Sofia (SOF) to Denver (DEN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — DEN
Oct 13 — Oct 201
Round-trip
1 adult, Economy
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Find cheap flights from Sofia to Denver 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.Cheap flight deals from Sofia to Denver
Cheapest
Best
Last-minute
One-way
Cheapest flights from Sofia to DenverExplore the most affordable flight options available from Sofia to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.
Explore the most affordable flight options available from Sofia to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.
This Gotogate deal was found by Cheapflights users on 9/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/19:40 am -
1 stop17h 45m
Sun 11/87:30 pm -
1 stop34h 40m
Deal found 9/8![Turkish Airlines logo]()
$893
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/69:30 am -
1 stop17h 55m
Fri 11/137:30 pm -
1 stop16h 20m
Deal found 9/11![Turkish Airlines logo]()
$894
This FlightHub deal was found by Cheapflights users on 9/13. 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 12/89:40 pm -
1 stop28h 45m
Tue 4/68:25 pm -
1 stop33h 35m
Deal found 9/13![Turkish Airlines logo]()
$909
This Mytrip deal was found by Cheapflights users on 9/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:00 pm -
3 stops35h 00m
Sun 11/83:40 pm -
3 stops35h 10m
Deal found 9/8![Multiple Airlines logo]()
$910
This Turkish Airlines deal was found by Cheapflights users on 9/9. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:00 pm -
1 stop34h 25m
Sun 11/18:30 pm -
1 stop27h 20m
Deal found 9/9![Turkish Airlines logo]()
$939
This Expedia deal was found by Cheapflights users on 9/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:25 am -
2 stops20h 48m
Tue 4/611:20 am -
2 stops15h 20m
Deal found 9/12![Multiple Airlines logo]()
$959
Best flights from Sofia to DenverDiscover carefully curated flight deals from Sofia to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.
Discover carefully curated flight deals from Sofia to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/69:30 am -
1 stop17h 55m
Fri 11/137:30 pm -
1 stop16h 20m
Deal found 9/11![Turkish Airlines logo]()
$894
This Expedia deal was found by Cheapflights users on 9/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:25 am -
2 stops20h 48m
Tue 4/611:20 am -
2 stops15h 20m
Deal found 9/12![Multiple Airlines logo]()
$959
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Fri 11/66:25 am -
1 stop18h 10m
Fri 11/134:15 pm -
1 stop21h 40m
Deal found 9/12![United Airlines logo]()
$982
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Tue 12/86:25 am -
2 stops20h 48m
Tue 4/611:49 am -
2 stops21h 51m
Deal found 9/13![Air Canada logo]()
$982
This FlightHub deal was found by Cheapflights users on 9/13. 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 12/89:40 pm -
1 stop28h 45m
Tue 4/68:25 pm -
1 stop33h 35m
Deal found 9/13![Turkish Airlines logo]()
$909
This Turkish Airlines deal was found by Cheapflights users on 9/9. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:00 pm -
1 stop34h 25m
Sun 11/18:30 pm -
1 stop27h 20m
Deal found 9/9![Turkish Airlines logo]()
$939
This Booking.com deal was found by Cheapflights users on 9/8. 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.
Sun 11/19:40 am -
2 stops45h 08m
Sun 11/87:30 pm -
1 stop28h 20m
Deal found 9/8![Turkish Airlines logo]()
$944
Last-minute flights from Sofia to DenverDiscover last-minute flight deals from Sofia to Denver. Data last updated September 13, 2026 and is based on user searches.
Discover last-minute flight deals from Sofia to Denver. Data last updated September 13, 2026 and is based on user searches.
This Turkish Airlines deal was found by Cheapflights users on 9/9. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:00 pm -
1 stop34h 25m
Sun 11/18:30 pm -
1 stop27h 20m
Deal found 9/9![Turkish Airlines logo]()
$939
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Sun 10/256:00 am -
2 stops38h 17m
Sun 11/14:15 pm -
1 stop21h 40m
Deal found 9/9![United Airlines logo]()
$1,000
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:00 pm -
3 stops34h 25m
Sun 11/13:40 pm -
2 stops17h 15m
Deal found 9/9![Multiple Airlines logo]()
$1,315
One-way flights from Sofia to DenverSearch for one-way flight options from Sofia to Denver. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.
Search for one-way flight options from Sofia to Denver. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Thu 12/106:05 am -
3 stops42h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$562
This Booking.com deal was found by Cheapflights users on 9/12. 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.
Thu 12/109:40 pm -
1 stop28h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Turkish Airlines logo]()
$883
Find flight deals from Sofia to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $894 (Gotogate) |
One-way from | $562 (Kiwi.com) |
Popular in | July |
Cheapest in | November |
Average price | $945 |
Cheapflights Fare Finder
Customize your flight search to find flights from Sofia to Denver 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 7,457,451 searches. Data last updated September 13, 2026.
Use the filters below to find and compare flights from Sofia to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SofiaDenver
SOF Sofia - DEN Denver Intl
SOFDEN
Sofia
Thu 12/10
6:05 am-3:52 pm
3 stops42h 47m
Denver Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$562
Quickest round-trip
SofiaDenver
SOF Sofia - DEN Denver Intl
SOFDEN
Sofia
Fri 11/6
9:30 am-6:25 pm
1 stop17h 55m
Denver Intl
Fri 11/13
7:30 pm-8:50 pm
1 stop16h 20m
$894
SofiaDenver
SOF Sofia - DEN Denver Intl
SOFDEN
Sofia
Tue 12/8
9:40 pm-5:25 pm
1 stop28h 45m
Denver Intl
Tue 4/6
8:25 pm-3:00 pm
1 stop33h 35m
$909
SofiaDenver
SOF Sofia - DEN Denver Intl
SOFDEN
Sofia
Sun 10/25
4:00 pm-6:25 pm
1 stop34h 25m
Denver Intl
Sun 11/1
8:30 pm-8:50 am
1 stop27h 20m
$939
SofiaDenver
SOF Sofia - DEN Denver Intl
SOFDEN
Sofia
Sun 11/1
9:40 am-10:48 pm
2 stops45h 08m
Denver Intl
Sun 11/8
7:30 pm-8:50 am
1 stop28h 20m
$944
SofiaDenver
SOF Sofia - DEN Denver Intl
SOFDEN
Sofia
Tue 12/8
6:25 am-6:13 pm
2 stops20h 48m
Denver Intl
Tue 4/6
11:20 am-11:40 am
2 stops15h 20m
$959
SofiaDenver
SOF Sofia - DEN Denver Intl
SOFDEN
Sofia
Fri 11/6
6:25 am-3:35 pm
1 stop18h 10m
Denver Intl
Fri 11/13
4:15 pm-10:55 pm
1 stop21h 40m
$982
SofiaDenver
SOF Sofia - DEN Denver Intl
SOFDEN
Sofia
Tue 12/8
6:25 am-6:13 pm
2 stops20h 48m
Denver Intl
Tue 4/6
11:49 am-6:40 pm
2 stops21h 51m
$982
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Sofia-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sofia-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sofia-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Sofia-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sofia-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Sofia to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Sofia with our price prediction graph.
SOF-DEN
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 Sofia to Denver
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated September 13, 2026.
Get a feel of what it's like to fly with Turkish Airlines,United Airlines, andLufthansa from Sofia to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Comfort
7.3
Food
7.5
Entertainment
7.5
Boarding
7.3
Crew
7.8
Reviews
1 / 20
8.0
ExcellentMuhammad,Jan 2026
ORD - DFW
Overall
7.4
Comfort
7.3
Food
7.5
Entertainment
7.5
Boarding
7.3
Crew
7.8
Reviews
1 / 20
8.0
ExcellentMuhammad,Jan 2026
ORD - DFW
Overall
7.4
Comfort
7.3
Food
7.5
Entertainment
7.5
Boarding
7.3
Crew
7.8
Reviews
1 / 20
8.0
ExcellentMuhammad,Jan 2026
ORD - DFW
Overall
7.4
Comfort
7.3
Food
7.5
Entertainment
7.5
Boarding
7.3
Crew
7.8
Reviews
1 / 20
8.0
ExcellentMuhammad,Jan 2026
ORD - DFW
Related info for your journey
Find useful and relevant information for your journey from Sofia to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Westminster
Lakewood
Centennial
Black Hawk
Broomfield
Golden
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Greeley
Cripple Creek
Winter Park
Limon
Frisco
Manitou Springs
Englewood
Glendale
Evergreen
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.
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Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.
Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 13, 2026.
Search flights from Sofia to Denver by cabin class
Find flights from Sofia to Denver, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Sofia and Denver flights
Browse other Sofia and Denver flight options. Last updated on September 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Sofia to Denver
Discover the top 3 airlines that operate flights from Sofia to Denver. 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 7,457,451 searches. Data last updated September 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$701 | Average$908 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$838 | Average$991 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$838 | Average$1,006 | FlexibilityNo cancel fee | On-time69% |