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Flights from Sofia to Denver

Find cheap airlines flights from Sofia to Denver

You can choose from 1 airlines that fly from Sofia to Denver, including Lufthansa, Turkish Airlines has lowest fares on this route.
Lufthansa logo Lufthansa
Airlines are determined based on actual purchased flight tickets from Sofia to Denver according to previous 12 months data from Trip.com.

Find flight deals from Sofia to Denver for the next 3 months. Book one way flights from KRW 1,245,200 or round trip flights from KRW 1,251,200.

      • SOF 9:05 PM
        28h 25m
        1 stop
        DEN 4:30 PM
        Sofia - Denver | Sun, Apr 19 | British Airways
        DEN 4:05 PM
        17h 35m
        1 stop
        SOF 6:40 PM
        Denver - Sofia | Sun, Apr 26 | United Airlines
        KRW 1,251,200 KRW 1,883,900
        34% off
        34% off
        KRW 1,883,900 KRW 1,251,200
      • SOF 9:35 AM
        17h 50m
        1 stop
        DEN 6:25 PM
        Sofia - Denver | Sun, Apr 19 | Turkish Airlines
        DEN 8:25 PM
        14h 50m
        1 stop
        SOF 8:15 PM
        Denver - Sofia | Sun, Apr 26 | Turkish Airlines
        KRW 1,321,700 KRW 1,883,900
        30% off
        30% off
        KRW 1,883,900 KRW 1,321,700
      • SOF 6:10 AM
        18h 50m
        1 stop
        DEN 5:00 PM
        Sofia - Denver | Mon, Mar 9 | Lufthansa
        DEN 5:20 PM
        17h
        1 stop
        SOF 6:20 PM
        Denver - Sofia | Mon, Mar 16 | Lufthansa
        KRW 1,321,900 KRW 1,883,900
        30% off
        30% off
        KRW 1,883,900 KRW 1,321,900
      • SOF 6:20 AM
        18h 20m
        1 stop
        DEN 3:40 PM
        Sofia - Denver | Sun, Apr 19 | Lufthansa
        DEN 5:40 PM
        15h 30m
        1 stop
        SOF 6:10 PM
        Denver - Sofia | Sun, Apr 26 | Lufthansa
        KRW 1,341,700
        28% off
        KRW 1,883,900 KRW 1,341,700
      • SOF 6:20 AM
        16h 15m
        1 stop
        DEN 1:35 PM
        Sofia - Denver | Fri, Apr 3 | Lufthansa
        DEN 4:05 PM
        22h 5m
        1 stop
        SOF 11:10 PM
        Denver - Sofia | Sat, Apr 11 | United Airlines
        KRW 1,346,200
        28% off
        KRW 1,883,900 KRW 1,346,200
      • SOF 3:50 PM
        35h 35m
        1 stop
        DEN 6:25 PM
        Sofia - Denver | Mon, Apr 13 | Turkish Airlines
        DEN 8:25 PM
        14h 50m
        1 stop
        SOF 8:15 PM
        Denver - Sofia | Tue, Apr 21 | Turkish Airlines
        KRW 1,365,500
        28% off
        KRW 1,883,900 KRW 1,365,500
      • SOF 6:10 AM
        21h 40m
        1 stop
        DEN 6:50 PM
        Sofia - Denver | Fri, Apr 3 | United Airlines
        DEN 8:25 PM
        17h 45m
        1 stop
        SOF 11:10 PM
        Denver - Sofia | Sat, Apr 11 | Lufthansa
        KRW 1,366,400
        27% off
        KRW 1,883,900 KRW 1,366,400
      • SOF 9:35 AM
        17h
        1 stop
        DEN 6:35 PM
        Sofia - Denver | Thu, Mar 19 | Turkish Airlines
        DEN 8:20 PM
        16h 30m
        1 stop
        SOF 8:50 PM
        Denver - Sofia | Thu, Mar 26 | Turkish Airlines
        KRW 1,369,400
        27% off
        KRW 1,883,900 KRW 1,369,400
      • SOF 6:10 AM
        16h 30m
        1 stop
        DEN 2:40 PM
        Sofia - Denver | Mon, Mar 16 | Lufthansa
        DEN 9:20 PM
        17h 25m
        1 stop
        SOF 10:45 PM
        Denver - Sofia | Mon, Mar 23 | United Airlines
        KRW 1,373,100
        27% off
        KRW 1,883,900 KRW 1,373,100
      • SOF 6:10 AM
        16h 30m
        1 stop
        DEN 2:40 PM
        Sofia - Denver | Mon, Mar 9 | United Airlines
        DEN 5:20 PM
        17h
        1 stop
        SOF 6:20 PM
        Denver - Sofia | Mon, Mar 16 | Lufthansa
        KRW 1,375,200
        27% off
        KRW 1,883,900 KRW 1,375,200
      • SOF 1:00 PM
        17h 25m
        1 stop
        DEN Invalid Date
        Sofia - Denver | Mon, Mar 9 | Normal Airline
        DEN 3:00 PM
        6h
        Nonstop
        SOF 4:00 PM
        Denver - Sofia | Wed, Mar 11 | Normal Airline
        Find more flights
        Find more flights
      • SOF 4:00 PM
        34h 35m
        1 stop
        DEN 6:35 PM
        Sofia - Denver | Mon, Mar 9 | Turkish Airlines
        KRW 1,245,200 KRW 2,610,000
        52% off
        52% off
        KRW 2,610,000 KRW 1,245,200
      • SOF 1:45 PM
        14h 10m
        1 stop
        DEN 7:55 PM
        Sofia - Denver | Mon, Mar 9 | United Airlines
        KRW 1,312,500 KRW 2,610,000
        50% off
        50% off
        KRW 2,610,000 KRW 1,312,500
      • SOF 6:05 AM
        17h 30m
        1 stop
        DEN 3:35 PM
        Sofia - Denver | Mon, Mar 9 | Lufthansa
        KRW 1,324,700 KRW 2,610,000
        49% off
        49% off
        KRW 2,610,000 KRW 1,324,700
      • SOF 6:10 AM
        18h 50m
        1 stop
        DEN 5:00 PM
        Sofia - Denver | Mon, Mar 9 | Austrian Airlines
        KRW 1,340,400
        49% off
        KRW 2,610,000 KRW 1,340,400
      • SOF 5:25 PM
        31h 5m
        1 stop
        DEN 4:30 PM
        Sofia - Denver | Mon, Mar 9 | British Airways
        KRW 1,683,100
        36% off
        KRW 2,610,000 KRW 1,683,100
      • SOF 5:25 PM
        31h 5m
        1 stop
        DEN 4:30 PM
        Sofia - Denver | Mon, Mar 9 | Finnair
        KRW 1,821,300
        30% off
        KRW 2,610,000 KRW 1,821,300
      • SOF 5:25 PM
        31h 5m
        1 stop
        DEN 4:30 PM
        Sofia - Denver | Mon, Mar 9 | American Airlines
        KRW 1,879,700
        28% off
        KRW 2,610,000 KRW 1,879,700
      • SOF 5:25 PM
        31h 5m
        1 stop
        DEN 4:30 PM
        Sofia - Denver | Mon, Mar 9 | Iberia
        KRW 1,905,300
        27% off
        KRW 2,610,000 KRW 1,905,300
      • SOF 1:00 PM
        17h 25m
        1 stop
        DEN Invalid Date
        Sofia - Denver | Mon, Mar 9 | Normal Airline
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        Find more flights

Displayed flight fares from Sofia to Denver are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Sofia to Denver

The distance between Sofia and Denver is approximately 9,454.14 km. Based on Trip.com's data travel demand peaks in August. The off-season for travel is December.

Cheapest one-way flight priceKRW 1,245,200
Cheapest round-trip ticket priceKRW 1,251,200
Off-season for travelDecember
Peak season for travelAugust
Flight distance9,454.14 km
Popular airlineLufthansa
Flight statistics for the Sofia–Denver route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Sofia to Denver (SOF-DEN)?

    Based on Trip.com data, Turkish Airlines offers one-way fares as low as KRW 1,245,200 on Cheapest nonstop routes (e.g. SOF to DEN on Mon, Mar 9), while British Airways offers Cheapest nonstop round-trips from KRW 1,251,200 departing on Sun, Apr 19 and returning on Sun, Apr 26.
  • At the moment, several airlines serve connecting flights from Sofia to Denver, including: Lufthansa Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Sofia to Denver is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Sofia to Denver, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Mar 9, with one-way flights priced at just KRW 1,245,200.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Turkish Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Denver travel is around August.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Sofia to Denver is December, when demand for travel is lower.
  • After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Sofia to Denver on March 9, 2026 with Lufthansa, with prices starting at KRW 1,321,900.
  • You can land at any one of the following hubs in Denver, with Sofia International Airport to Denver International Airport (SOF-DEN) is by far the most common option on this route: Denver International Airport (DEN) Rocky Mountain Metropolitan Airport (BJC).
  • The time difference between Denver and Sofia is 9h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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