SOF - DEN

$581 Find Cheap Flights from Sofia to Denver - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$809
Typical prices: $887-$1,059
Multiple Airlines
Tue 12/11Thu 4/19
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
April
Cheapest • 15% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Frankfurt am Main (FRA)
Cheapest • Avg $924 (round-trip)
Munich Franz Josef Strauss (MUC)
Shortest trip • 15h 40m (one-way)
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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, Dec 11 - Mon, Apr 19
Multiple Airlines Logo
4:50 pm - 12:08 amSOF  Sofia-DEN Denver Intl
40h 18m3 stops Barcelona-El Prat Lisbon Humberto Delgado San Francisco
Multiple Airlines Logo
8:15 am - 6:45 pmDEN  Denver Intl-SOF Sofia
25h 30m2 stops Vancouver Intl Munich Franz Josef Strauss
$809Multiple Airlines
Fri, Dec 11 - Mon, Apr 19
Turkish Airlines Logo
9:30 am - 5:25 pmSOF  Sofia-DEN Denver Intl
16h 55m1 stop Istanbul
Turkish Airlines Logo
8:25 pm - 8:20 pmDEN  Denver Intl-SOF Sofia
14h 55m1 stop Istanbul
$871Turkish Airlines
Sun, Nov 22 - Sun, Nov 29
Turkish Airlines Logo
4:00 pm - 5:25 pmSOF  Sofia-DEN Denver Intl
34h 25m1 stop Istanbul
Turkish Airlines Logo
7:30 pm - 8:40 amDEN  Denver Intl-SOF Sofia
28h 10m1 stop Istanbul
$874Turkish Airlines
Wed, Dec 9 - Sat, Apr 3
Turkish Airlines Logo
9:30 am - 5:25 pmSOF  Sofia-DEN Denver Intl
16h 55m1 stop Istanbul
Turkish Airlines Logo
8:25 pm - 8:20 pmDEN  Denver Intl-SOF Sofia
14h 55m1 stop Istanbul
$882Turkish Airlines
Fri, Dec 11 - Mon, Apr 19
Multiple Airlines Logo
4:50 pm - 12:08 amSOF  Sofia-DEN Denver Intl
40h 18m3 stops Barcelona-El Prat Lisbon Humberto Delgado San Francisco
Multiple Airlines Logo
1:30 pm - 11:10 pmDEN  Denver Intl-SOF Sofia
24h 40m3 stops Toronto Pearson Intl Munich Franz Josef Strauss Budapest Ferenc Liszt Intl
$882Multiple Airlines
Wed, Dec 9 - Sat, Apr 3
Multiple Airlines Logo
4:00 pm - 6:00 pmSOF  Sofia-DEN Denver Intl
35h 00m3 stops Belgrade Nikola Tesla Kastrup Copenhagen Reykjavik Keflavik Intl
Multiple Airlines Logo
1:30 pm - 12:20 pmDEN  Denver Intl-SOF Sofia
37h 50m2 stops Toronto Pearson Intl Munich Franz Josef Strauss
$893Multiple Airlines
Mon, Nov 23 - Mon, Nov 30
Turkish Airlines Logo
9:30 am - 9:48 pmSOF  Sofia-DEN Denver Intl
21h 18m2 stops Istanbul Chicago O'Hare Intl
Turkish Airlines Logo
7:30 pm - 3:10 pmDEN  Denver Intl-SOF Sofia
34h 40m1 stop Istanbul
$902Turkish Airlines
Mon, Nov 23 - Mon, Nov 30
Multiple Airlines Logo
9:30 am - 11:08 pmSOF  Sofia-DEN Denver Intl
22h 38m2 stops Istanbul New York John F Kennedy Intl
Multiple Airlines Logo
7:30 pm - 8:55 pmDEN  Denver Intl-SOF Sofia
16h 25m1 stop Istanbul
$932Multiple Airlines
Fri, Dec 11 - Mon, Apr 19
Multiple Airlines Logo
9:30 am - 9:59 pmSOF  Sofia-DEN Denver Intl
45h 29m2 stops Istanbul Chicago O'Hare Intl
Multiple Airlines Logo
2:50 pm - 8:20 pmDEN  Denver Intl-SOF Sofia
20h 30m2 stops New York John F Kennedy Intl Istanbul
$960Multiple Airlines
Mon, Nov 23 - Mon, Nov 30
Lufthansa Logo
6:25 am - 1:40 pmSOF  Sofia-DEN Denver Intl
16h 15m1 stop Frankfurt am Main
Lufthansa Logo
8:30 pm - 10:55 pmDEN  Denver Intl-SOF Sofia
17h 25m1 stop Munich Franz Josef Strauss
$1,005Lufthansa
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 with more confidence.

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

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from Sofia to Denver. It’s 12% cheaper than the average day, while Wednesday is the most expensive, with prices 6% higher.

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Key details for Sofia to Denver flights

Low season

December

Cheapest flight

$809
Beat the crowds with an average 57% drop in travelers.
The most popular month to fly with an average 30% increase in travelers.
Round-trip 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 answers about this route, including flight times, airports, airlines and booking tips.

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

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

  • How long is a flight from Sofia to Denver?

    A nonstop flight from Sofia to Denver takes 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.

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

    Round-trip flights from Sofia to Denver range from $887 to $1,059, with an average of $996 over the past 12 months. Anything below $887 counts as a good deal.

  • 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 showed a wide range, from about $809 to $5,823. That means the highest observed fare was about 7x higher than the lowest one.

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

    Denver Intl Airport (DEN) hosts 5 major car rental companies, with daily rates averaging $56 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • Ace
    • Europcar
    • NU Car
    • Hertz

  • 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).

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

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

    • Munich Franz Josef Strauss (MUC) - 42% of one-stop connections
    • Istanbul (IST) - 30% of one-stop connections
    • Frankfurt am Main (FRA) - 28% of one-stop connections

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

    Yes. Flexible dates can save you up to 17% on flights from Sofia to Denver. Friday is the cheapest departure day at $884 round-trip on average, while Wednesday is the most expensive at $1,065, a difference of $181.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Munich Franz Josef Strauss (MUC) gives the shortest average 1-stop total travel time at 15h 40m, compared with 15h 43m via Frankfurt am Main (FRA) and 18h 13m via Istanbul (IST).

  • What is the time difference between Sofia and Denver?

    Denver is 8 hours behind Sofia (Mountain Time vs Eastern European Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Denver?

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

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 are flexible, aim for a Friday departure and avoid flying on Wednesday. On this route, Friday flights average $884, about $181 less than Wednesday fares (17% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Sofia to Denver trip for April. Fares historically average $849 round-trip in that month - typically $365 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

Car rentals in Denver
Hotels in Denver
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