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Cheap flights from Sofia to Denver from $632

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sofia to Denver departing on 3/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Sofia to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:45 pm - 12:32 am
SOF
-
DEN
18h 47m
2 stops
United Airlines Logo
11:22 am - 1:15 pm
DEN
-
SOF
17h 53m
2 stops
$864United Airlines
Mon, Mar 16 - Mon, Mar 23
Lufthansa Logo
6:30 am - 4:29 pm
SOF
-
DEN
18h 59m
2 stops
Lufthansa Logo
4:05 pm - 6:40 pm
DEN
-
SOF
17h 35m
1 stop
$870Lufthansa
Thu, Apr 2 - Wed, Apr 8
Multiple Airlines Logo
6:30 am - 4:29 pm
SOF
-
DEN
18h 59m
2 stops
Multiple Airlines Logo
5:35 pm - 11:55 pm
DEN
-
SOF
21h 20m
2 stops
$894Multiple Airlines
Thu, Apr 2 - Wed, Apr 8
Multiple Airlines Logo
7:00 am - 7:36 pm
SOF
-
DEN
20h 36m
2 stops
Multiple Airlines Logo
11:35 am - 2:05 pm
DEN
-
SOF
18h 30m
2 stops
$938Multiple Airlines
Thu, Mar 19 - Mon, Mar 23
United Airlines Logo
6:30 am - 1:35 pm
SOF
-
DEN
16h 05m
1 stop
United Airlines Logo
4:05 pm - 6:40 pm
DEN
-
SOF
17h 35m
1 stop
$942United Airlines
Thu, Apr 2 - Wed, Apr 8
United Airlines Logo
6:30 am - 1:35 pm
SOF
-
DEN
16h 05m
1 stop
United Airlines Logo
4:35 pm - 6:40 pm
DEN
-
SOF
17h 05m
2 stops
$947United Airlines
Thu, Apr 2 - Wed, Apr 8
Multiple Airlines Logo
7:00 am - 5:21 pm
SOF
-
DEN
19h 21m
2 stops
Multiple Airlines Logo
7:00 am - 2:00 pm
DEN
-
SOF
22h 00m
2 stops
$959Multiple Airlines
Thu, Apr 16 - Mon, Apr 20
United Airlines Logo
2:10 pm - 11:59 pm
SOF
-
DEN
18h 49m
2 stops
United Airlines Logo
10:15 am - 12:10 pm
DEN
-
SOF
16h 55m
2 stops
$997United Airlines
Thu, Apr 2 - Wed, Apr 8
Multiple Airlines Logo
9:35 am - 6:25 pm
SOF
-
DEN
17h 50m
1 stop
Multiple Airlines Logo
4:40 pm - 9:30 am
DEN
-
SOF
31h 50m
2 stops
$1,148Multiple Airlines
Thu, Apr 16 - Mon, Apr 20
Multiple Airlines Logo
7:10 am - 7:55 pm
SOF
-
DEN
20h 45m
2 stops
Multiple Airlines Logo
11:15 am - 5:50 pm
DEN
-
SOF
22h 35m
3 stops
$1,174Multiple Airlines
Thu, Mar 19 - Mon, Mar 23

United Airlines flights from Sofia to Denver

Our best United Airlines deals on Sofia to Denver flight tickets
United Airlines
Mar 16
SOF1:45 pmSofia
18h 47m
2 stops
DEN12:32 amDenver Intl
Mar 23
DEN11:22 amDenver Intl
17h 53m
2 stops
SOF1:15 pmSofia
$864
United Airlines
Apr 2
SOF6:30 amSofia
16h 05m
1 stop
DEN1:35 pmDenver Intl
Apr 8
DEN4:05 pmDenver Intl
17h 35m
1 stop
SOF6:40 pmSofia
$942
United Airlines
Apr 2
SOF6:30 amSofia
16h 05m
1 stop
DEN1:35 pmDenver Intl
Apr 8
DEN4:35 pmDenver Intl
17h 05m
2 stops
SOF6:40 pmSofia
$947

Lufthansa flights from Sofia to Denver

Our best Lufthansa deals on Sofia to Denver flight tickets
Lufthansa
Apr 23
SOF6:30 amSofia
18h 10m
1 stop
DEN3:40 pmDenver Intl
Apr 29
DEN4:05 pmDenver Intl
21h 55m
1 stop
SOF11:00 pmSofia
$859
Lufthansa
Apr 2
SOF6:30 amSofia
18h 59m
2 stops
DEN4:29 pmDenver Intl
Apr 8
DEN4:05 pmDenver Intl
17h 35m
1 stop
SOF6:40 pmSofia
$870
Lufthansa
Mar 19
SOF6:05 amSofia
17h 30m
1 stop
DEN3:35 pmDenver Intl
Mar 23
DEN5:20 pmDenver Intl
21h 25m
1 stop
SOF10:45 pmSofia
$1,236

momondo Fare Finder

 
Customize your flight search to find flights from Sofia to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 6, 2026.
Use the filters below to find and compare flights from Sofia to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Mon 3/16

1:45 pm-12:32 am

2 stops18h 47m

Denver Intl

Mon 3/23

11:22 am-1:15 pm

2 stops17h 53m

$864

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 4/2

6:30 am-4:29 pm

2 stops18h 59m

Denver Intl

Wed 4/8

4:05 pm-6:40 pm

1 stop17h 35m

$870

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 4/2

6:30 am-4:29 pm

2 stops18h 59m

Denver Intl

Wed 4/8

5:35 pm-11:55 pm

2 stops21h 20m

$894

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 3/19

7:00 am-7:36 pm

2 stops20h 36m

Denver Intl

Mon 3/23

11:35 am-2:05 pm

2 stops18h 30m

$938

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 4/2

6:30 am-1:35 pm

1 stop16h 05m

Denver Intl

Wed 4/8

4:05 pm-6:40 pm

1 stop17h 35m

$942
Quickest round-trip

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 4/2

6:30 am-1:35 pm

1 stop16h 05m

Denver Intl

Wed 4/8

4:35 pm-6:40 pm

2 stops17h 05m

$947

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 4/16

7:00 am-5:21 pm

2 stops19h 21m

Denver Intl

Mon 4/20

7:00 am-2:00 pm

2 stops22h 00m

$959

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 4/2

2:10 pm-11:59 pm

2 stops18h 49m

Denver Intl

Wed 4/8

10:15 am-12:10 pm

2 stops16h 55m

$997

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 4/16

9:35 am-6:25 pm

1 stop17h 50m

Denver Intl

Mon 4/20

4:40 pm-9:30 am

2 stops31h 50m

$1,148

SofiaDenver

SOF - DEN

SOFDEN

Sofia

Thu 3/19

7:10 am-7:55 pm

2 stops20h 45m

Denver Intl

Mon 3/23

11:15 am-5:50 pm

3 stops22h 35m

$1,174

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Denver from

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

Can stopping save me money on Sofia to Denver flights?

You could potentially save up to 26% 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

35h 59m

Direct flights

None
The fastest flight from Sofia to Denver takes 35h 59m
There are no direct flights from Sofia to Denver. There are no popular flight routes from Sofia to Denver.
Search flight deals

  • 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 59m 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?

  • 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?

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 AirlinesPriceFrom $704Free CancellationRating
7.3
4,244 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $758Free CancellationRating
7.4
9,403 reviews
Search United Airlines flights
LufthansaPriceFrom $784Free CancellationRating
6.8
7,828 reviews
Search Lufthansa flights

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Breckenridge
Estes Park
Black Hawk
Aurora
Fort Collins
Manitou Springs
Boulder
Longmont
Greeley
Cripple Creek
Keystone
Lakewood
Westminster
Thornton
Frisco
Centennial
Winter Park
Grand Lake
Copper Mountain
Englewood

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.

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