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Flights from Sofia to Denver

What to know about flights from 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.

Cheapest one-way
DKK 5,699
Turkish Airlines Turkish Airlines SOF-DEN 30h 15m · 1 stop Sun, Oct 25
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Cheapest round-trip
DKK 5,746
Turkish Airlines Turkish Airlines SOF-DEN 35h 25m · 2 stops Mon, Nov 2 - Mon, Nov 9
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Recommended airlines
Turkish Airlines Turkish AirlinesCheapest· From DKK 5,699 Lufthansa LufthansaMost booked
When to travel
October
Cheapest
August
Peak season for travel
Route details
9,454.14 km
Flight distance

Explore the cheapest one-way and round-trip flights from Sofia to Denver over the next 90 days, with one-way fares from DKK 5,699 and round-trip from DKK 5,746. Based on Trip.com's latest 7-day flight data.

    • SOF 4:00 PM
      35h 25m
      1 stop
      DEN 6:25 PM
      Sofia - Denver | Mon, Nov 2 | Turkish Airlines
      DEN 7:30 PM
      34h 40m
      1 stop
      SOF 3:10 PM
      Denver - Sofia | Mon, Nov 9 | Turkish Airlines
      DKK 5,746 DKK 9,085
      37% off
      37% off
      DKK 9,085 DKK 5,746
    • SOF 9:30 AM
      16h 55m
      1 stop
      DEN 5:25 PM
      Sofia - Denver | Mon, Nov 9 | Turkish Airlines
      DEN 7:30 PM
      30h 35m
      1 stop
      SOF 11:05 AM
      Denver - Sofia | Sat, Nov 14 | Turkish Airlines
      DKK 5,855 DKK 9,085
      36% off
      36% off
      DKK 9,085 DKK 5,855
    • SOF 4:00 PM
      34h 25m
      1 stop
      DEN 5:25 PM
      Sofia - Denver | Fri, Nov 20 | Turkish Airlines
      DEN 7:30 PM
      30h 35m
      1 stop
      SOF 11:05 AM
      Denver - Sofia | Thu, Nov 26 | Turkish Airlines
      DKK 5,894 DKK 9,085
      35% off
      35% off
      DKK 9,085 DKK 5,894
    • SOF 9:30 AM
      16h 55m
      1 stop
      DEN 5:25 PM
      Sofia - Denver | Mon, Nov 23 | Turkish Airlines
      DEN 7:30 PM
      16h 20m
      1 stop
      SOF 8:50 PM
      Denver - Sofia | Tue, Dec 1 | Turkish Airlines
      DKK 6,077
      33% off
      DKK 9,085 DKK 6,077
    • SOF 9:30 AM
      17h 55m
      1 stop
      DEN 6:25 PM
      Sofia - Denver | Tue, Nov 3 | Turkish Airlines
      DEN 7:30 PM
      16h 20m
      1 stop
      SOF 8:50 PM
      Denver - Sofia | Tue, Nov 10 | Turkish Airlines
      DKK 6,180
      32% off
      DKK 9,085 DKK 6,180
    • SOF 9:30 AM
      16h 55m
      1 stop
      DEN 5:25 PM
      Sofia - Denver | Tue, Nov 24 | Turkish Airlines
      DEN 7:30 PM
      16h 25m
      1 stop
      SOF 8:55 PM
      Denver - Sofia | Tue, Dec 1 | Turkish Airlines
      DKK 6,202
      32% off
      DKK 9,085 DKK 6,202
    • SOF 9:30 AM
      17h 55m
      1 stop
      DEN 6:25 PM
      Sofia - Denver | Sat, Nov 7 | Turkish Airlines
      DEN 7:30 PM
      16h 20m
      1 stop
      SOF 8:50 PM
      Denver - Sofia | Sat, Nov 14 | Turkish Airlines
      DKK 6,284
      31% off
      DKK 9,085 DKK 6,284
    • SOF 4:00 PM
      34h 25m
      1 stop
      DEN 5:25 PM
      Sofia - Denver | Mon, Nov 30 | Turkish Airlines
      DEN 7:30 PM
      34h 40m
      1 stop
      SOF 3:10 PM
      Denver - Sofia | Mon, Dec 7 | Turkish Airlines
      DKK 6,319
      30% off
      DKK 9,085 DKK 6,319
    • SOF 4:00 PM
      35h 25m
      1 stop
      DEN 6:25 PM
      Sofia - Denver | Sun, Nov 1 | Turkish Airlines
      DEN 7:30 PM
      34h 40m
      1 stop
      SOF 3:10 PM
      Denver - Sofia | Mon, Nov 9 | Turkish Airlines
      DKK 6,335
      30% off
      DKK 9,085 DKK 6,335
    • SOF 1:00 PM
      17h 25m
      1 stop
      DEN 2:00 PM
      Sofia - Denver | Sun, Oct 25 | Normal Airline
      DEN 3:00 PM
      6h
      Nonstop
      SOF 4:00 PM
      Denver - Sofia | Tue, Oct 27 | Normal Airline
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    • Cheapest
      SOF 9:10 PM
      30h 15m
      1 stop
      DEN 6:25 PM
      Sofia - Denver | Sun, Oct 25 | Turkish Airlines
      DKK 5,699 DKK 11,355
      50% off
      50% off
      DKK 11,355 DKK 5,699
    • SOF 9:40 PM
      28h 45m
      1 stop
      DEN 6:25 PM
      Sofia - Denver | Fri, Oct 30 | Turkish Airlines
      DKK 5,881 DKK 11,355
      48% off
      48% off
      DKK 11,355 DKK 5,881
    • SOF 2:00 PM
      14h 5m
      1 stop
      DEN 8:05 PM
      Sofia - Denver | Fri, Oct 30 | Lufthansa
      DKK 6,376 DKK 11,355
      44% off
      44% off
      DKK 11,355 DKK 6,376
    • SOF 6:10 AM
      17h 10m
      1 stop
      DEN 2:20 PM
      Sofia - Denver | Sun, Oct 25 | Austrian Airlines
      DKK 6,389
      44% off
      DKK 11,355 DKK 6,389
    • SOF 6:10 AM
      21h 35m
      1 stop
      DEN 6:45 PM
      Sofia - Denver | Sun, Oct 25 | Lufthansa
      DKK 6,420
      43% off
      DKK 11,355 DKK 6,420
    • SOF 6:10 AM
      21h 35m
      1 stop
      DEN 6:45 PM
      Sofia - Denver | Sun, Oct 25 | United Airlines
      DKK 6,431
      43% off
      DKK 11,355 DKK 6,431
    • SOF 6:00 AM
      17h 30m
      1 stop
      DEN 3:30 PM
      Sofia - Denver | Fri, Oct 30 | United Airlines
      DKK 6,466
      43% off
      DKK 11,355 DKK 6,466
    • SOF 6:25 AM
      18h 30m
      1 stop
      DEN 3:55 PM
      Sofia - Denver | Sun, Oct 25 | British Airways
      DKK 7,948
      30% off
      DKK 11,355 DKK 7,948
    • SOF 1:00 PM
      17h 25m
      1 stop
      DEN 2:00 PM
      Sofia - Denver | Sun, Oct 25 | Normal Airline
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    • SOF 2:00 PM
      14h 5m
      1 stop
      DEN 8:05 PM
      Sofia - Denver | Fri, Oct 30 | Lufthansa
      DKK 6,376 DKK 11,355
      44% off
      44% off
      DKK 11,355 DKK 6,376
    • SOF 6:10 AM
      17h 10m
      1 stop
      DEN 2:20 PM
      Sofia - Denver | Sun, Oct 25 | Austrian Airlines
      DKK 6,389 DKK 11,355
      44% off
      44% off
      DKK 11,355 DKK 6,389
    • SOF 6:00 AM
      17h 30m
      1 stop
      DEN 3:30 PM
      Sofia - Denver | Fri, Oct 30 | United Airlines
      DKK 6,466 DKK 11,355
      43% off
      43% off
      DKK 11,355 DKK 6,466
    • SOF 6:25 AM
      18h 30m
      1 stop
      DEN 3:55 PM
      Sofia - Denver | Sun, Oct 25 | British Airways
      DKK 7,948
      30% off
      DKK 11,355 DKK 7,948
    • SOF 6:10 AM
      21h 35m
      1 stop
      DEN 6:45 PM
      Sofia - Denver | Sun, Oct 25 | Lufthansa
      DKK 6,420
      43% off
      DKK 11,355 DKK 6,420
    • SOF 6:10 AM
      21h 35m
      1 stop
      DEN 6:45 PM
      Sofia - Denver | Sun, Oct 25 | United Airlines
      DKK 6,431
      43% off
      DKK 11,355 DKK 6,431
    • SOF 9:40 PM
      28h 45m
      1 stop
      DEN 6:25 PM
      Sofia - Denver | Fri, Oct 30 | Turkish Airlines
      DKK 5,881
      48% off
      DKK 11,355 DKK 5,881
    • SOF 9:10 PM
      30h 15m
      1 stop
      DEN 6:25 PM
      Sofia - Denver | Sun, Oct 25 | Turkish Airlines
      DKK 5,699
      50% off
      DKK 11,355 DKK 5,699
    • SOF 1:00 PM
      17h 25m
      1 stop
      DEN 2:00 PM
      Sofia - Denver | Sun, Oct 25 | Normal Airline
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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.

Which airlines are the most popular for Sofia to Denver flights?

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.

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 DKK 5,699 on Cheapest nonstop routes (e.g. SOF to DEN on Sun, Oct 25), while Turkish Airlines offers Cheapest nonstop round-trips from DKK 5,746 departing on Mon, Nov 2 and returning on Mon, Nov 9.
  • 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 Sun, Oct 25, with one-way flights priced at just DKK 5,699.
    · 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 October, when demand for travel is lower.
  • After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Sofia to Denver on October 31, 2026 with Turkish Airlines, with prices starting at DKK 6,335.
  • You can arrive at any of the following airports in Denver: Denver International Airport (DEN), and Rocky Mountain Metropolitan Airport (BJC). Flights from Sofia Airport to Denver International Airport (SOF-DEN) are by far the most popular option for this route.
  • 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Sofia to Denver is DKK 6,283. Fares vary by travel date, airline and availability.
  • Enter Sofia and Denver, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
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.
Cancellation/change due to a flight schedule change:
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.