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Cheap flights from Denver to Sofia from $336

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Sofia departing on 8/16. 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 Denver to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
8:25 pm - 3:00 pm
DEN
-
SOF
33h 35m
1 stop
Turkish Airlines Logo
9:35 am - 6:25 pm
SOF
-
DEN
17h 50m
1 stop
$708Turkish Airlines
Tue, Aug 11 - Thu, Oct 15
Turkish Airlines Logo
8:25 pm - 8:45 am
DEN
-
SOF
27h 20m
1 stop
Turkish Airlines Logo
9:35 am - 6:25 pm
SOF
-
DEN
17h 50m
1 stop
$709Turkish Airlines
Tue, Aug 11 - Thu, Oct 15
Turkish Airlines Logo
8:25 pm - 3:00 pm
DEN
-
SOF
33h 35m
1 stop
Turkish Airlines Logo
9:35 am - 6:25 pm
SOF
-
DEN
17h 50m
1 stop
$714Turkish Airlines
Tue, Aug 11 - Thu, Oct 15
Turkish Airlines Logo
8:25 pm - 8:45 am
DEN
-
SOF
27h 20m
1 stop
Turkish Airlines Logo
9:05 pm - 6:25 pm
SOF
-
DEN
30h 20m
1 stop
$723Turkish Airlines
Tue, Aug 25 - Sat, Aug 29
Multiple Airlines Logo
11:30 am - 12:10 pm
DEN
-
SOF
15h 40m
2 stops
Multiple Airlines Logo
6:30 am - 3:40 pm
SOF
-
DEN
18h 10m
1 stop
$756Multiple Airlines
Tue, Aug 11 - Thu, Oct 15
Multiple Airlines Logo
9:40 am - 1:25 pm
DEN
-
SOF
18h 45m
2 stops
Multiple Airlines Logo
6:10 am - 1:45 pm
SOF
-
DEN
16h 35m
1 stop
$765Multiple Airlines
Wed, Aug 26 - Wed, Sep 2
Lufthansa Logo
4:15 pm - 11:15 pm
DEN
-
SOF
22h 00m
1 stop
Lufthansa Logo
6:10 am - 1:45 pm
SOF
-
DEN
16h 35m
1 stop
$768Lufthansa
Wed, Aug 26 - Wed, Sep 2
Multiple Airlines Logo
11:30 am - 11:40 am
DEN
-
SOF
15h 10m
2 stops
Multiple Airlines Logo
6:30 am - 4:58 pm
SOF
-
DEN
19h 28m
2 stops
$769Multiple Airlines
Tue, Aug 11 - Thu, Oct 15
Lufthansa Logo
3:40 pm - 6:40 pm
DEN
-
SOF
18h 00m
2 stops
Lufthansa Logo
6:10 am - 4:25 pm
SOF
-
DEN
19h 15m
2 stops
$771Lufthansa
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
9:44 am - 12:10 pm
DEN
-
SOF
17h 26m
2 stops
United Airlines Logo
6:30 am - 1:35 pm
SOF
-
DEN
16h 05m
1 stop
$773United Airlines
Tue, Aug 11 - Thu, Oct 15

United Airlines flights from Denver to Sofia

Our best United Airlines deals on Denver to Sofia flight tickets
United Airlines
Aug 11
DEN9:44 amDenver Intl
17h 26m
2 stops
SOF12:10 pmSofia
Oct 15
SOF6:30 amSofia
16h 05m
1 stop
DEN1:35 pmDenver Intl
$773
United Airlines
Oct 10
DEN11:59 pmDenver Intl
27h 11m
2 stops
SOF12:10 pmSofia
Oct 14
SOF6:20 amSofia
39h 03m
2 stops
DEN12:23 pmDenver Intl
$782
United Airlines
Oct 10
DEN7:40 pmDenver Intl
31h 00m
2 stops
SOF11:40 amSofia
Oct 14
SOF6:20 amSofia
18h 20m
1 stop
DEN3:40 pmDenver Intl
$804

Air Canada flights from Denver to Sofia

Our best Air Canada deals on Denver to Sofia flight tickets
Air Canada
Aug 11
DEN10:02 amDenver Intl
17h 08m
2 stops
SOF12:10 pmSofia
Oct 15
SOF6:30 amSofia
20h 48m
2 stops
DEN6:18 pmDenver Intl
$777
Air Canada
Oct 10
DEN6:10 pmDenver Intl
33h 00m
2 stops
SOF12:10 pmSofia
Oct 14
SOF6:20 amSofia
22h 57m
2 stops
DEN8:17 pmDenver Intl
$785
Air Canada
May 12
DEN9:10 amDenver Intl
24h 30m
2 stops
SOF6:40 pmSofia
Jun 12
SOF6:10 amSofia
26h 00m
2 stops
DEN11:10 pmDenver Intl
$1,020

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 May 5, 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

Tue 8/11

8:25 pm-3:00 pm

1 stop33h 35m

Sofia

Thu 10/15

9:35 am-6:25 pm

1 stop17h 50m

$708

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 8/11

8:25 pm-8:45 am

1 stop27h 20m

Sofia

Thu 10/15

9:35 am-6:25 pm

1 stop17h 50m

$709

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 8/11

8:25 pm-3:00 pm

1 stop33h 35m

Sofia

Thu 10/15

9:35 am-6:25 pm

1 stop17h 50m

$714

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 8/25

8:25 pm-8:45 am

1 stop27h 20m

Sofia

Sat 8/29

9:05 pm-6:25 pm

1 stop30h 20m

$723

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 8/11

11:30 am-12:10 pm

2 stops15h 40m

Sofia

Thu 10/15

6:30 am-3:40 pm

1 stop18h 10m

$756

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 8/26

9:40 am-1:25 pm

2 stops18h 45m

Sofia

Wed 9/2

6:10 am-1:45 pm

1 stop16h 35m

$765

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 8/26

4:15 pm-11:15 pm

1 stop22h 00m

Sofia

Wed 9/2

6:10 am-1:45 pm

1 stop16h 35m

$768

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 8/11

11:30 am-11:40 am

2 stops15h 10m

Sofia

Thu 10/15

6:30 am-4:58 pm

2 stops19h 28m

$769

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 8/26

3:40 pm-6:40 pm

2 stops18h 00m

Sofia

Wed 9/2

6:10 am-4:25 pm

2 stops19h 15m

$771
Quickest round-trip

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 8/11

9:44 am-12:10 pm

2 stops17h 26m

Sofia

Thu 10/15

6:30 am-1:35 pm

1 stop16h 05m

$773

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $596, 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 $773 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 $642 on momondo.

Can stopping save me money on Denver to Sofia flights?

You could potentially save up to 43% 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

18h 45m

Direct flights

None
The fastest flight from Denver to Sofia takes 18h 45m
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 18h 45m 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
4,350 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $577Free CancellationRating
6.8
7,974 reviews
Search Lufthansa flights
United AirlinesPriceFrom $686Free CancellationRating
7.4
9,683 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