Which layover airport has the shortest travel time from Sofia to Denver?

Flights connecting via Munich (MUC) have the shortest average one-way travel time: 16h 03m.

Which layover airport offers the lowest fares from Sofia to Denver?

Flights via Frankfurt am Main (FRA) offer the lowest average round-trip price of $863.

Which airport is the most popular layover for flights between Sofia and Denver?

Munich (MUC) was the most common stop: 41% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Sofia to Denver?

Munich (MUC) has the shortest average layover time for this route: 3h 27m.

What airlines fly to Denver?

Lufthansa, United Airlines and Turkish Airlines are the top three most popular airlines that fly to Denver from Sofia according to our data. Lufthansa is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 3 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Sofia Airport to Denver Intl Airport?

Prices for flights from Sofia Airport to Denver Intl Airport refresh daily.

How many operators does momondo search for flights from Sofia Airport to Denver Intl Airport?

As of November 2026, there are 3 operators available to choose from for flights from Sofia Airport to Denver Intl Airport.

How old do you have to be to fly from Sofia Airport to Denver Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sofia Airport to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$809 Cheap Flights from Sofia to Denver in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sofia to Denver

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:50 pm - 12:08 amSOF Sofia-DEN Denver Intl

40h 18m3 stops Barcelona-El Prat Lisbon Humberto Delgado San Francisco

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

9:30 am - 5:25 pmSOF Sofia-DEN Denver Intl

16h 55m1 stop Istanbul

8:25 pm - 8:20 pmDEN Denver Intl-SOF Sofia

14h 55m1 stop Istanbul

$871Turkish Airlines

Fri, Dec 11 - Mon, Apr 19

4:50 pm - 12:08 amSOF Sofia-DEN Denver Intl

40h 18m3 stops Barcelona-El Prat Lisbon Humberto Delgado San Francisco

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

Fri, Dec 11 - Mon, Apr 19

9:30 am - 5:25 pmSOF Sofia-DEN Denver Intl

16h 55m1 stop Istanbul

8:25 pm - 8:20 pmDEN Denver Intl-SOF Sofia

14h 55m1 stop Istanbul

$882Turkish Airlines

Wed, Dec 9 - Sat, Apr 3

4:00 pm - 6:00 pmSOF Sofia-DEN Denver Intl

35h 00m3 stops Belgrade Nikola Tesla Kastrup Copenhagen Reykjavik Keflavik Intl

1:30 pm - 12:20 pmDEN Denver Intl-SOF Sofia

37h 50m2 stops Toronto Pearson Intl Munich Franz Josef Strauss

$893Multiple Airlines

Wed, Dec 9 - Sat, Apr 3

9:30 am - 5:25 pmSOF Sofia-DEN Denver Intl

16h 55m1 stop Istanbul

7:30 pm - 3:10 pmDEN Denver Intl-SOF Sofia

34h 40m1 stop Istanbul

$899Turkish Airlines

Mon, Nov 23 - Mon, Nov 30

4:00 pm - 9:59 pmSOF Sofia-DEN Denver Intl

38h 59m2 stops Istanbul Chicago O'Hare Intl

8:25 pm - 8:20 pmDEN Denver Intl-SOF Sofia

14h 55m1 stop Istanbul

$909Turkish Airlines

Fri, Dec 11 - Mon, Apr 19

9:30 am - 9:59 pmSOF Sofia-DEN Denver Intl

45h 29m2 stops Istanbul Chicago O'Hare Intl

2:50 pm - 8:20 pmDEN Denver Intl-SOF Sofia

20h 30m2 stops New York John F Kennedy Intl Istanbul

$960Multiple Airlines

Fri, Dec 11 - Mon, Apr 19

6:00 am - 2:30 pmSOF Sofia-DEN Denver Intl

17h 30m1 stop Munich Franz Josef Strauss

4:15 pm - 6:20 pmDEN Denver Intl-SOF Sofia

17h 05m1 stop Munich Franz Josef Strauss

$1,013Lufthansa

Sat, Nov 21 - Sat, Nov 28

2:00 pm - 1:00 amSOF Sofia-DEN Denver Intl

20h 00m2 stops Munich Franz Josef Strauss San Francisco

7:45 am - 1:15 pmDEN Denver Intl-SOF Sofia

20h 30m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

$1,022United Airlines

Sat, Nov 21 - Sat, Nov 28

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Turkish Airlines flights from Sofia to Denver

Our best Turkish Airlines deals on Sofia to Denver flight tickets

Turkish Airlines

Nov 23

SOF9:30 amSofia

16h 55m

1 stop

DEN5:25 pmDenver Intl

Nov 30

DEN7:30 pmDenver Intl

34h 40m

1 stop

SOF3:10 pmSofia

$899

Turkish Airlines

Nov 23

SOF9:30 amSofia

21h 18m

2 stops

DEN9:48 pmDenver Intl

Nov 30

DEN7:30 pmDenver Intl

34h 40m

1 stop

SOF3:10 pmSofia

$937

Turkish Airlines

Nov 22

SOF9:45 pmSofia

33h 03m

2 stops

DEN9:48 pmDenver Intl

Nov 29

DEN7:30 pmDenver Intl

34h 40m

1 stop

SOF3:10 pmSofia

$949

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Fri 12/11

4:50 pm-12:08 am

3 stops40h 18m

Denver Intl

Mon 4/19

8:15 am-6:45 pm

2 stops25h 30m

$809

Quickest round-trip

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Fri 12/11

9:30 am-5:25 pm

1 stop16h 55m

Denver Intl

Mon 4/19

8:25 pm-8:20 pm

1 stop14h 55m

$871

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Fri 12/11

4:50 pm-12:08 am

3 stops40h 18m

Denver Intl

Mon 4/19

1:30 pm-11:10 pm

3 stops24h 40m

$882

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Wed 12/9

9:30 am-5:25 pm

1 stop16h 55m

Denver Intl

Sat 4/3

8:25 pm-8:20 pm

1 stop14h 55m

$882

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Wed 12/9

4:00 pm-6:00 pm

3 stops35h 00m

Denver Intl

Sat 4/3

1:30 pm-12:20 pm

2 stops37h 50m

$893

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 11/23

9:30 am-5:25 pm

1 stop16h 55m

Denver Intl

Mon 11/30

7:30 pm-3:10 pm

1 stop34h 40m

$899

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Fri 12/11

4:00 pm-9:59 pm

2 stops38h 59m

Denver Intl

Mon 4/19

8:25 pm-8:20 pm

1 stop14h 55m

$909

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Fri 12/11

9:30 am-9:59 pm

2 stops45h 29m

Denver Intl

Mon 4/19

2:50 pm-8:20 pm

2 stops20h 30m

$960

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sat 11/21

6:00 am-2:30 pm

1 stop17h 30m

Denver Intl

Sat 11/28

4:15 pm-6:20 pm

1 stop17h 05m

$1,013

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Sat 11/21

2:00 pm-1:00 am

2 stops20h 00m

Denver Intl

Sat 11/28

7:45 am-1:15 pm

2 stops20h 30m

$1,022

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Sofia to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Sofia is in January. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in January, then you should wait until April to fly from Sofia, when ticket prices are also cheap, with an average price of $849.

Can stopping save me money on Sofia to Denver flights?

You could potentially save up to 7% on your flight if you consider stops on a Sofia to Denver flight.

When to book flights from Sofia to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Sofia to Denver according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Sofia to Denver (SOF to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sofia to Denver

Best Price Found	$809
Fastest flight time	35h 25m
Direct flights	None

The best flight deal from Sofia to Denver found on momondo in the last 72 hours is $809

The fastest flight from Sofia to Denver takes 35h 25m

There are no direct flights from Sofia to Denver. There are no popular flight routes from Sofia to Denver.

Search flight deals

Frequently asked questions about flying from Sofia to Denver

How far is Sofia to Denver Intl by plane?
The straight-line distance from Sofia to Denver Intl is 5884.6 mi. Typically, this will take 35h 25m by plane in normal conditions.
When did momondo last update prices for flights from Sofia Airport to Denver Intl Airport?
Prices for flights from Sofia Airport to Denver Intl Airport refresh daily.
How many operators does momondo search for flights from Sofia Airport to Denver Intl Airport?
As of November 2026, there are 3 operators available to choose from for flights from Sofia Airport to Denver Intl Airport.
How old do you have to be to fly from Sofia Airport to Denver Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sofia Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Sofia to Denver?
Based on momondo bookings for flights between Sofia and Denver, the leading airline is Lufthansa, making up 37% of the total bookings. Other popular airlines include United Airlines with 37% and Turkish Airlines with 27%.

Best airlines flying from Sofia to Denver

Compare and see reviews for airlines that fly from Sofia to Denver with momondo

Airline	Rating	Free Cancellation	Price
Turkish Airlines	PriceFrom $820	Free Cancellation	Rating 7.4 4,464 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $838	Free Cancellation	Rating 7.3 10,460 reviews	Search United Airlines flights
Lufthansa	PriceFrom $849	Free Cancellation	Rating 6.8 8,299 reviews	Search Lufthansa flights

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Fort Collins

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Boulder

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Greeley

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Littleton

Cripple Creek

Englewood

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Winter Park

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Why use momondo?

Why should I use momondo to find a flight deal from Sofia to Denver?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sofia to Denver. momondo saves you time and could save you money on your trip.

Can I find flights from Sofia to Denver with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Sofia to Denver flights to just show those with flexible booking policies.

How can momondo help me find flights from Sofia to Denver?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sofia to Denver.

I’m not ready to book a flight from Sofia to Denver right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Denver from Sofia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.