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: 15h 21m.

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

Munich (MUC) has the shortest average layover time for this route: 2h 41m.

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

Munich (MUC) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

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.

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 51% 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 August 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.

$712 Cheap Flights from Sofia to Denver in 2026

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.

2:10 pm - 10:31 amSOF Sofia-DEN Denver Intl

29h 21m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

5:40 pm - 10:40 pmDEN Denver Intl-SOF Sofia

20h 00m1 stop Frankfurt am Main

$957Multiple Airlines

Tue, Sep 29 - Thu, Oct 15

9:35 am - 6:25 pmSOF Sofia-DEN Denver Intl

17h 50m1 stop Istanbul

8:30 pm - 3:00 pmDEN Denver Intl-SOF Sofia

33h 30m1 stop Istanbul

$963Turkish Airlines

Tue, Sep 29 - Thu, Oct 15

2:10 pm - 10:31 amSOF Sofia-DEN Denver Intl

29h 21m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

11:35 am - 11:40 amDEN Denver Intl-SOF Sofia

15h 05m2 stops Toronto Pearson Intl Vienna Intl

$963Multiple Airlines

Tue, Sep 29 - Thu, Oct 15

6:10 am - 1:35 pmSOF Sofia-DEN Denver Intl

16h 25m1 stop Frankfurt am Main

8:25 pm - 11:15 pmDEN Denver Intl-SOF Sofia

17h 50m1 stop Munich Franz Josef Strauss

$973United Airlines

Tue, Sep 29 - Thu, Oct 15

6:10 am - 11:08 pmSOF Sofia-DEN Denver Intl

25h 58m2 stops Frankfurt am Main Vancouver Intl

9:40 am - 1:20 pmDEN Denver Intl-SOF Sofia

18h 40m2 stops Vancouver Intl Frankfurt am Main

$974Air Canada

Tue, Sep 29 - Thu, Oct 15

6:10 am - 1:35 pmSOF Sofia-DEN Denver Intl

16h 25m1 stop Frankfurt am Main

7:40 am - 11:15 pmDEN Denver Intl-SOF Sofia

30h 35m2 stops Houston George Bush Intcntl Munich Franz Josef Strauss

$978United Airlines

Tue, Sep 29 - Thu, Oct 15

12:55 pm - 11:08 pmSOF Sofia-DEN Denver Intl

19h 13m2 stops Munich Franz Josef Strauss Vancouver Intl

4:40 pm - 3:00 amDEN Denver Intl-SOF Sofia

25h 20m3 stops Reykjavik Keflavik Intl Munich Franz Josef Strauss Belgrade Nikola Tesla

$1,364Multiple Airlines

Tue, Sep 29 - Thu, Oct 15

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United Airlines flights from Sofia to Denver

Our best United Airlines deals on Sofia to Denver flight tickets

United Airlines

Sep 29

SOF6:10 amSofia

16h 25m

1 stop

DEN1:35 pmDenver Intl

Oct 15

DEN8:25 pmDenver Intl

17h 50m

1 stop

SOF11:15 pmSofia

$973

United Airlines

Sep 29

SOF6:10 amSofia

16h 25m

1 stop

DEN1:35 pmDenver Intl

Oct 15

DEN7:40 amDenver Intl

30h 35m

2 stops

SOF11:15 pmSofia

$978

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Tue 9/29

2:10 pm-10:31 am

2 stops29h 21m

Denver Intl

Thu 10/15

5:40 pm-10:40 pm

1 stop20h 00m

$957

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Tue 9/29

9:35 am-6:25 pm

1 stop17h 50m

Denver Intl

Thu 10/15

8:30 pm-3:00 pm

1 stop33h 30m

$963

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Tue 9/29

2:10 pm-10:31 am

2 stops29h 21m

Denver Intl

Thu 10/15

11:35 am-11:40 am

2 stops15h 05m

$963

Quickest round-trip

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Tue 9/29

6:10 am-1:35 pm

1 stop16h 25m

Denver Intl

Thu 10/15

8:25 pm-11:15 pm

1 stop17h 50m

$973

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Tue 9/29

6:10 am-11:08 pm

2 stops25h 58m

Denver Intl

Thu 10/15

9:40 am-1:20 pm

2 stops18h 40m

$974

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Tue 9/29

6:10 am-1:35 pm

1 stop16h 25m

Denver Intl

Thu 10/15

7:40 am-11:15 pm

2 stops30h 35m

$978

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Tue 9/29

12:55 pm-11:08 pm

2 stops19h 13m

Denver Intl

Thu 10/15

4:40 pm-3:00 am

3 stops25h 20m

$1,364

Cheapest one-way

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 8/17

5:45 am-11:20 am

3 stops38h 35m

$712

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 8/17

7:30 pm-11:20 am

2 stops48h 50m

$716

Quickest one-way

SofiaDenver

SOF Sofia - DEN Denver Intl

SOFDEN

Sofia

Mon 8/17

6:10 am-1:45 pm

1 stop16h 35m

$938

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 typical price of a round-trip flight between Sofia and Denver?

Prices are currently low for flights on this route.

Typical prices usually range from $996 to $1,065.
The lowest price recently found on this route was $957.

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 September to fly from Sofia, when ticket prices are also cheap, with an average price of $783.

Can stopping save me money on Sofia to Denver flights?

You could potentially save up to 24% 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

Fastest flight time	27h 20m
Direct flights	None

The fastest flight from Sofia to Denver takes 27h 20m

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 27h 20m 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 August 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 51% of the total bookings. Other popular airlines include United Airlines with 26% and Turkish Airlines with 23%.

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 $704	Free Cancellation	Rating 7.4 4,468 reviews	Search Turkish Airlines flights
Lufthansa	PriceFrom $810	Free Cancellation	Rating 6.8 8,177 reviews	Search Lufthansa flights
United Airlines	PriceFrom $833	Free Cancellation	Rating 7.4 10,075 reviews	Search United Airlines flights

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Centennial

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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.