SOF - DEN

$562 Find Cheap Flights from Sofia to Denver - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$894
Typical prices: $861-$1,060
Turkish Airlines
Tue 11/6Tue 11/13
SOF - DEN • 1 stop
Cheapest one-way
$562
Typical prices: $839-$1,296
Multiple Airlines
Mon 12/10
SOF - DEN • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Sofia and Denver. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
September
Cheapest • 20% price drop
September
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Istanbul (IST)
Cheapest • Avg $853 (round-trip)
Frankfurt am Main (FRA)
Shortest trip • 15h 41m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Sofia to Denver (SOF-DEN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sofia to Denver

Fri, Nov 6 - Fri, Nov 13
Turkish Airlines Logo
9:30 am - 6:25 pmSOF  Sofia-DEN Denver Intl
17h 55m1 stop Istanbul
Turkish Airlines Logo
7:30 pm - 8:50 pmDEN  Denver Intl-SOF Sofia
16h 20m1 stop Istanbul
$894Turkish Airlines
Tue, Dec 8 - Tue, Apr 6
Turkish Airlines Logo
9:40 pm - 5:25 pmSOF  Sofia-DEN Denver Intl
28h 45m1 stop Istanbul
Turkish Airlines Logo
8:25 pm - 3:00 pmDEN  Denver Intl-SOF Sofia
33h 35m1 stop Istanbul
$909Turkish Airlines
Tue, Dec 8 - Tue, Apr 6
Turkish Airlines Logo
9:40 pm - 5:25 pmSOF  Sofia-DEN Denver Intl
28h 45m1 stop Istanbul
Turkish Airlines Logo
8:25 pm - 3:00 pmDEN  Denver Intl-SOF Sofia
33h 35m1 stop Istanbul
$916Turkish Airlines
Tue, Dec 8 - Tue, Apr 6
Multiple Airlines Logo
6:25 am - 6:13 pmSOF  Sofia-DEN Denver Intl
20h 48m2 stops Frankfurt am Main Vancouver Intl
Multiple Airlines Logo
11:20 am - 11:40 amDEN  Denver Intl-SOF Sofia
15h 20m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl
$959Multiple Airlines
Sat, Nov 7 - Sat, Feb 6
Lufthansa Logo
6:25 am - 3:35 pmSOF  Sofia-DEN Denver Intl
18h 10m1 stop Frankfurt am Main
Lufthansa Logo
4:15 pm - 6:20 pmDEN  Denver Intl-SOF Sofia
17h 05m1 stop Munich Franz Josef Strauss
$975Lufthansa
Fri, Nov 6 - Fri, Nov 13
United Airlines Logo
6:25 am - 3:35 pmSOF  Sofia-DEN Denver Intl
18h 10m1 stop Frankfurt am Main
United Airlines Logo
4:15 pm - 10:55 pmDEN  Denver Intl-SOF Sofia
21h 40m1 stop Munich Franz Josef Strauss
$982United Airlines
Sat, Nov 7 - Sat, Feb 6
United Airlines Logo
6:25 am - 3:35 pmSOF  Sofia-DEN Denver Intl
18h 10m1 stop Frankfurt am Main
United Airlines Logo
4:15 pm - 10:55 pmDEN  Denver Intl-SOF Sofia
21h 40m1 stop Munich Franz Josef Strauss
$982United Airlines
Tue, Dec 8 - Tue, Apr 6
Air Canada Logo
6:25 am - 6:13 pmSOF  Sofia-DEN Denver Intl
20h 48m2 stops Frankfurt am Main Vancouver Intl
Air Canada Logo
11:49 am - 6:40 pmDEN  Denver Intl-SOF Sofia
21h 51m2 stops Vancouver Intl Munich Franz Josef Strauss
$982Air Canada
Fri, Nov 6 - Fri, Nov 13
United Airlines Logo
6:25 am - 3:35 pmSOF  Sofia-DEN Denver Intl
18h 10m1 stop Frankfurt am Main
United Airlines Logo
4:15 pm - 10:55 pmDEN  Denver Intl-SOF Sofia
21h 40m1 stop Munich Franz Josef Strauss
$983United Airlines
Fri, Nov 6 - Fri, Nov 13
Multiple Airlines Logo
5:00 am - 6:00 pmSOF  Sofia-DEN Denver Intl
22h 00m3 stops Belgrade Nikola Tesla Frankfurt am Main Reykjavik Keflavik Intl
Multiple Airlines Logo
3:40 pm - 12:00 pmDEN  Denver Intl-SOF Sofia
35h 20m3 stops Reykjavik Keflavik Intl Frankfurt am Main Istanbul Sabiha Gokcen
$1,038Multiple Airlines
Booking Insights

Price, demand and travel trends for Sofia to Denver flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Sofia to Denver with more confidence.

How much is a round-trip flight from Sofia to Denver?

Round-trip flights from Sofia to Denver start at $894. Prices are typical for this route right now, with typical round-trip fares ranging from $861 to $1,060. The lowest price found in the past 5 days was $894 on Turkish Airlines.

What's the cheapest day of the week to fly from Sofia to Denver?

Saturday is the cheapest day of the week to fly from Sofia to Denver, it is 12% cheaper than the average day. Wednesday is the most expensive day with flight prices 9% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Sofia to Denver flights

Low season

February

Cheapest flight

$562
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Sofia to Denver

When to book flights from Sofia to Denver

Are your dates flexible? Find out the best times to travel from Sofia to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Sofia to Denver flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Sofia to Denver?

    Flights from Sofia to Denver usually depart from Sofia (SOF) and arrive at Denver Intl (DEN).

  • What cabin classes can I book on flights from Sofia to Denver?

    Only Economy Class is available on flights from Sofia to Denver.

  • Which airports do connecting flights from Sofia to Denver pass through?

    One-stop flights from Sofia to Denver most commonly connect through:

    • Istanbul (IST) - 46% of one-stop connections
    • Munich Franz Josef Strauss (MUC) - 41% of one-stop connections
    • Frankfurt am Main (FRA) - 14% of one-stop connections

    Istanbul (IST) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Sofia to Denver?

    On the Sofia to Denver route, being flexible with your departure day can save you up to 20%. Saturday is the cheapest day at $862 round-trip on average, while Wednesday is the most expensive at $1,065: a $203 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What popular places can I visit in Denver?

    Some of the most popular sights in Denver are Colorado Convention Center, Union Station Denver and Coors Field. These are among the most viewed places in Denver on KAYAK.

  • How long is a flight from Sofia to Denver?

    A nonstop flight from Sofia to Denver takes 0h 00m, covering 5,871 miles.

  • Do I need a passport to fly from Sofia to Denver?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Sofia to Denver changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $894 to $1,241. That means the highest observed fare was about 38% higher than the lowest one.

  • How are flight prices from Sofia to Denver looking right now?

    One-way fares from Sofia to Denver are currently lower than usual. Average one-way flight prices are about $680, which is 31% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Sofia to Denver?

    Flying via Frankfurt am Main (FRA) gives the shortest average 1-stop total travel time at 15h 41m, compared with 16h 13m via Munich Franz Josef Strauss (MUC) and 17h 39m via Istanbul (IST).

  • What is the time difference between Sofia and Denver?

    Denver is 9 hours behind Sofia (Mountain Time vs Eastern European Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Denver Intl Airport (DEN)?

    Denver Intl Airport (DEN) hosts 5 major car rental companies, with daily rates starting from around $16 for economy cars. Top options include:
    • Routes Car & Truck Rentals
    • Ace
    • NU Car
    • Europcar
    • Hertz

  • How much should I expect to pay for a Sofia to Denver flight?

    Round-trip flights from Sofia to Denver range from $861 to $1,060, with an average of $972 over the past 12 months. Anything below $861 counts as a good deal.

Your guide to booking Sofia to Denver flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Saturday departure instead of Wednesday. On this route, Saturday flights average $862 - about $203 less than Wednesday (19% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Sofia to Denver trip for September. Fares historically average $782 round-trip in that month - typically $432 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Denver Intl Airport.
    - The Westin Denver International Airport

More options for your flight from Sofia to Denver

Complete your trip to Denver with a hotel stay or car rental

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