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Cheap flights from Denver to Sofia from $771

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Sofia departing on 11/5. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
4:15 pm - 6:20 pm
DEN
-
SOF
17h 05m
1 stop
Lufthansa Logo
1:55 pm - 2:30 pm
SOF
-
DEN
33h 35m
1 stop
$771Lufthansa
jeu., nov. 5 - lun., nov. 9
Lufthansa Logo
4:15 pm - 6:20 pm
DEN
-
SOF
17h 05m
1 stop
Lufthansa Logo
1:55 pm - 2:30 pm
SOF
-
DEN
33h 35m
1 stop
$781Lufthansa
jeu., nov. 5 - lun., nov. 9
Lufthansa Logo
4:15 pm - 6:20 pm
DEN
-
SOF
17h 05m
1 stop
Lufthansa Logo
1:55 pm - 2:30 pm
SOF
-
DEN
33h 35m
1 stop
$785Lufthansa
jeu., nov. 5 - lun., nov. 9
Lufthansa Logo
4:15 pm - 11:15 pm
DEN
-
SOF
22h 00m
1 stop
Lufthansa Logo
7:25 pm - 1:45 pm
SOF
-
DEN
27h 20m
1 stop
$793Lufthansa
dim., août 2 - mar., août 18
Lufthansa Logo
4:00 pm - 6:20 pm
DEN
-
SOF
17h 20m
2 stops
Lufthansa Logo
1:55 pm - 2:30 pm
SOF
-
DEN
33h 35m
1 stop
$799Lufthansa
jeu., nov. 5 - lun., nov. 9
United Airlines Logo
9:48 am - 1:15 pm
DEN
-
SOF
18h 27m
2 stops
United Airlines Logo
1:55 pm - 2:30 pm
SOF
-
DEN
33h 35m
1 stop
$803United Airlines
jeu., nov. 5 - lun., nov. 9
Multiple Airlines Logo
4:15 pm - 11:15 pm
DEN
-
SOF
22h 00m
1 stop
Multiple Airlines Logo
7:25 pm - 1:45 pm
SOF
-
DEN
27h 20m
1 stop
$808Multiple Airlines
dim., août 2 - mar., août 18
Multiple Airlines Logo
4:15 pm - 11:15 pm
DEN
-
SOF
22h 00m
1 stop
Multiple Airlines Logo
7:25 pm - 1:45 pm
SOF
-
DEN
27h 20m
1 stop
$809Multiple Airlines
dim., août 2 - mar., août 18
United Airlines Logo
6:13 am - 12:10 pm
DEN
-
SOF
20h 57m
2 stops
United Airlines Logo
12:55 pm - 1:45 pm
SOF
-
DEN
33h 50m
1 stop
$813United Airlines
dim., août 2 - mar., août 18
Multiple Airlines Logo
5:40 pm - 6:10 pm
DEN
-
SOF
39h 30m
2 stops
Multiple Airlines Logo
3:00 pm - 7:54 pm
SOF
-
DEN
37h 54m
2 stops
$818Multiple Airlines
jeu., nov. 5 - lun., nov. 9

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Lufthansa flights from Denver to Sofia

Our best Lufthansa deals on Denver to Sofia flight tickets
Lufthansa
Nov 5
DEN4:15 pmDenver Intl
17h 05m
1 stop
SOF6:20 pmSofia
Nov 9
SOF1:55 pmSofia
33h 35m
1 stop
DEN2:30 pmDenver Intl
$771
Lufthansa
Nov 5
DEN4:15 pmDenver Intl
17h 05m
1 stop
SOF6:20 pmSofia
Nov 9
SOF1:55 pmSofia
33h 35m
1 stop
DEN2:30 pmDenver Intl
$781
Lufthansa
Nov 5
DEN4:15 pmDenver Intl
17h 05m
1 stop
SOF6:20 pmSofia
Nov 9
SOF1:55 pmSofia
33h 35m
1 stop
DEN2:30 pmDenver Intl
$785

United Airlines flights from Denver to Sofia

Our best United Airlines deals on Denver to Sofia flight tickets
United Airlines
Nov 5
DEN1:25 pmDenver Intl
14h 50m
2 stops
SOF1:15 pmSofia
Nov 9
SOF1:55 pmSofia
33h 35m
1 stop
DEN2:30 pmDenver Intl
$803
United Airlines
Aug 2
DEN6:13 amDenver Intl
20h 57m
2 stops
SOF12:10 pmSofia
Aug 18
SOF12:55 pmSofia
33h 50m
1 stop
DEN1:45 pmDenver Intl
$813
United Airlines
Aug 2
DEN4:15 pmDenver Intl
22h 00m
1 stop
SOF11:15 pmSofia
Aug 18
SOF2:10 pmSofia
38h 35m
2 stops
DEN7:45 pmDenver Intl
$827

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Sofia 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 juin 25, 2026.
Use the filters below to find and compare flights from Denver to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSofia

DEN - SOF

DENSOF

Denver Intl

jeu. 11/5

4:15 pm-6:20 pm

1 stop17h 05m

Sofia

lun. 11/9

1:55 pm-2:30 pm

1 stop33h 35m

$771

DenverSofia

DEN - SOF

DENSOF

Denver Intl

jeu. 11/5

4:15 pm-6:20 pm

1 stop17h 05m

Sofia

lun. 11/9

1:55 pm-2:30 pm

1 stop33h 35m

$781

DenverSofia

DEN - SOF

DENSOF

Denver Intl

jeu. 11/5

4:15 pm-6:20 pm

1 stop17h 05m

Sofia

lun. 11/9

1:55 pm-2:30 pm

1 stop33h 35m

$785
Quickest round-trip

DenverSofia

DEN - SOF

DENSOF

Denver Intl

dim. 8/2

4:15 pm-11:15 pm

1 stop22h 00m

Sofia

mar. 8/18

7:25 pm-1:45 pm

1 stop27h 20m

$793

DenverSofia

DEN - SOF

DENSOF

Denver Intl

jeu. 11/5

4:00 pm-6:20 pm

2 stops17h 20m

Sofia

lun. 11/9

1:55 pm-2:30 pm

1 stop33h 35m

$799

DenverSofia

DEN - SOF

DENSOF

Denver Intl

jeu. 11/5

9:48 am-1:15 pm

2 stops18h 27m

Sofia

lun. 11/9

1:55 pm-2:30 pm

1 stop33h 35m

$803

DenverSofia

DEN - SOF

DENSOF

Denver Intl

dim. 8/2

4:15 pm-11:15 pm

1 stop22h 00m

Sofia

mar. 8/18

7:25 pm-1:45 pm

1 stop27h 20m

$808

DenverSofia

DEN - SOF

DENSOF

Denver Intl

dim. 8/2

4:15 pm-11:15 pm

1 stop22h 00m

Sofia

mar. 8/18

7:25 pm-1:45 pm

1 stop27h 20m

$809

DenverSofia

DEN - SOF

DENSOF

Denver Intl

dim. 8/2

6:13 am-12:10 pm

2 stops20h 57m

Sofia

mar. 8/18

12:55 pm-1:45 pm

1 stop33h 50m

$813

DenverSofia

DEN - SOF

DENSOF

Denver Intl

jeu. 11/5

5:40 pm-6:10 pm

2 stops39h 30m

Sofia

lun. 11/9

3:00 pm-7:54 pm

2 stops37h 54m

$818

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Sofia from

How to get the cheapest flight ticket from Denver to Sofia

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

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

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Denver is in November. Flight prices, which tend to average around $600, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Sofia from Denver during March instead. Flights to Sofia in March, while not as cheap as those in November, still average around $623.

How far in advance should I book a flight from Denver to Sofia?

You are more likely to see cheaper flights to Sofia from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $775 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Denver for as low as $683 on momondo.

Can stopping save me money on Denver to Sofia flights?

You could potentially save up to 52% on your flight if you consider stops on a Denver to Sofia flight.

When to book flights from Denver to Sofia

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

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

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

Fastest flight time

14h 55m

Direct flights

None
The fastest flight from Denver to Sofia takes 14h 55m
There are no direct flights from Denver to Sofia. There are no popular flight routes from Denver to Sofia.
Search flight deals

Frequently asked questions about flying from Denver to Sofia

  • How far is Denver Intl to Sofia by plane?

    There are 5884.6 mi between Denver Intl and Sofia. Typically, this will take 14h 55m by plane in normal conditions.

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

    Prices for flights from Denver Intl Airport to Sofia Airport were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Sofia Airport.

  • What documentation or ID do you need to fly to Sofia Airport?

    The required travel and health documents for your Sofia 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 Sofia 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 Denver to Sofia?

Best airlines flying from Denver to Sofia

Compare and see reviews for airlines that fly from Denver to Sofia with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $568Free CancellationRating
7.4
4,421 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $634Free CancellationRating
6.8
8,094 reviews
Search Lufthansa flights
United AirlinesPriceFrom $686Free CancellationRating
7.4
9,893 reviews
Search United Airlines flights

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
Bansko
Borovets
Velingrad
Sandanski

Why use momondo?

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

It is quick and easy to find Denver to Sofia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sofia that suits you.

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

Yes. All flights to Sofia from Denver on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sofia from Denver.

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

If you are not ready to book a flight from Denver to Sofia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sofia and let you know when they change.

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Fly your favorite airline to Sofia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Turkish Airlines
United Airlines
Lufthansa