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Cheap flights from Denver to Sofia from $297

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 9/7. 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 - 8:15 pm
DEN
-
SOF
14h 50m
1 stop
Turkish Airlines Logo
9:35 am - 6:25 pm
SOF
-
DEN
17h 50m
1 stop
$596Turkish Airlines
Sat, Apr 18 - Sat, Apr 25
Turkish Airlines Logo
8:25 pm - 8:15 am
DEN
-
SOF
26h 50m
1 stop
Turkish Airlines Logo
9:35 pm - 6:25 pm
SOF
-
DEN
29h 50m
1 stop
$597Turkish Airlines
Thu, Apr 2 - Mon, Apr 13
Turkish Airlines Logo
8:25 pm - 8:15 pm
DEN
-
SOF
14h 50m
1 stop
Turkish Airlines Logo
9:35 am - 6:25 pm
SOF
-
DEN
17h 50m
1 stop
$617Turkish Airlines
Thu, Apr 30 - Thu, May 7
Turkish Airlines Logo
8:25 pm - 3:00 pm
DEN
-
SOF
33h 35m
1 stop
Turkish Airlines Logo
3:50 pm - 6:25 pm
SOF
-
DEN
35h 35m
1 stop
$680Turkish Airlines
Tue, May 5 - Wed, Jul 1
Lufthansa Logo
4:05 pm - 11:00 pm
DEN
-
SOF
21h 55m
1 stop
Lufthansa Logo
12:55 pm - 2:20 pm
SOF
-
DEN
34h 25m
1 stop
$707Lufthansa
Mon, Apr 13 - Mon, Apr 20
United Airlines Logo
7:45 am - 11:00 pm
DEN
-
SOF
30h 15m
2 stops
United Airlines Logo
12:55 pm - 2:20 pm
SOF
-
DEN
34h 25m
1 stop
$713United Airlines
Mon, Apr 13 - Mon, Apr 20
Multiple Airlines Logo
4:05 pm - 6:40 pm
DEN
-
SOF
17h 35m
1 stop
Multiple Airlines Logo
6:30 am - 5:00 pm
SOF
-
DEN
19h 30m
2 stops
$722Multiple Airlines
Thu, Apr 30 - Thu, May 7
United Airlines Logo
7:45 am - 11:00 pm
DEN
-
SOF
30h 15m
2 stops
United Airlines Logo
12:55 pm - 8:13 pm
SOF
-
DEN
40h 18m
2 stops
$723United Airlines
Mon, Apr 13 - Mon, Apr 20
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
$727Turkish Airlines
Sat, Aug 1 - Sat, Aug 8
Multiple Airlines Logo
4:05 pm - 6:40 pm
DEN
-
SOF
17h 35m
1 stop
Multiple Airlines Logo
2:10 pm - 10:18 am
SOF
-
DEN
29h 08m
2 stops
$731Multiple Airlines
Fri, Apr 17 - Fri, Apr 24

Turkish Airlines flights from Denver to Sofia

Our best Turkish Airlines deals on Denver to Sofia flight tickets
Turkish Airlines
Apr 18
DEN8:25 pmDenver Intl
14h 50m
1 stop
SOF8:15 pmSofia
Apr 25
SOF9:35 amSofia
17h 50m
1 stop
DEN6:25 pmDenver Intl
$596
Turkish Airlines
Apr 2
DEN8:25 pmDenver Intl
26h 50m
1 stop
SOF8:15 amSofia
Apr 13
SOF9:35 pmSofia
29h 50m
1 stop
DEN6:25 pmDenver Intl
$597
Turkish Airlines
Apr 30
DEN8:25 pmDenver Intl
14h 50m
1 stop
SOF8:15 pmSofia
May 7
SOF9:35 amSofia
17h 50m
1 stop
DEN6:25 pmDenver Intl
$617

Lufthansa flights from Denver to Sofia

Our best Lufthansa deals on Denver to Sofia flight tickets
Lufthansa
Apr 13
DEN4:05 pmDenver Intl
21h 55m
1 stop
SOF11:00 pmSofia
Apr 20
SOF12:55 pmSofia
34h 25m
1 stop
DEN2:20 pmDenver Intl
$707
Lufthansa
Apr 17
DEN4:05 pmDenver Intl
17h 35m
1 stop
SOF6:40 pmSofia
Apr 24
SOF6:20 amSofia
18h 20m
1 stop
DEN3:40 pmDenver Intl
$745
Lufthansa
Apr 1
DEN4:05 pmDenver Intl
17h 35m
1 stop
SOF6:40 pmSofia
Apr 10
SOF6:10 amSofia
17h 10m
1 stop
DEN2:20 pmDenver Intl
$763

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 March 17, 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
Quickest round-trip

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 4/18

8:25 pm-8:15 pm

1 stop14h 50m

Sofia

Sat 4/25

9:35 am-6:25 pm

1 stop17h 50m

$596

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 4/2

8:25 pm-8:15 am

1 stop26h 50m

Sofia

Mon 4/13

9:35 pm-6:25 pm

1 stop29h 50m

$597

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 4/30

8:25 pm-8:15 pm

1 stop14h 50m

Sofia

Thu 5/7

9:35 am-6:25 pm

1 stop17h 50m

$617

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 5/5

8:25 pm-3:00 pm

1 stop33h 35m

Sofia

Wed 7/1

3:50 pm-6:25 pm

1 stop35h 35m

$680

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 4/13

4:05 pm-11:00 pm

1 stop21h 55m

Sofia

Mon 4/20

12:55 pm-2:20 pm

1 stop34h 25m

$707

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 4/13

7:45 am-11:00 pm

2 stops30h 15m

Sofia

Mon 4/20

12:55 pm-2:20 pm

1 stop34h 25m

$713

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 4/30

4:05 pm-6:40 pm

1 stop17h 35m

Sofia

Thu 5/7

6:30 am-5:00 pm

2 stops19h 30m

$722

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 4/13

7:45 am-11:00 pm

2 stops30h 15m

Sofia

Mon 4/20

12:55 pm-8:13 pm

2 stops40h 18m

$723

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 8/1

8:25 pm-8:45 am

1 stop27h 20m

Sofia

Sat 8/8

9:05 pm-6:25 pm

1 stop30h 20m

$727

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Fri 4/17

4:05 pm-6:40 pm

1 stop17h 35m

Sofia

Fri 4/24

2:10 pm-10:18 am

2 stops29h 08m

$731

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $627.

How far in advance should I book a flight 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 $772 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 49% 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 50m

Direct flights

None
The fastest flight from Denver to Sofia takes 14h 50m
There are no direct flights from Denver to Sofia. There are no popular flight routes from Denver to Sofia.
Search flight deals

  • How far is Denver Intl to Sofia by plane?

    There are 5884.6 mi between Denver Intl and Sofia. Typically, this will take 14h 50m 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
7.3
4,258 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $577Free CancellationRating
6.8
7,858 reviews
Search Lufthansa flights
United AirlinesPriceFrom $686Free CancellationRating
7.4
9,432 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