Cheap flights from Denver (DEN) to Sofia (SOF) from $563

This is the cheapest one-way flight price, found on 6/4. Prices may vary by date and flight preferences.
DEN — SOF
Jun 11 — Jun 181
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The best prices from Denver Intl to Sofia are usually found in April or February, booked 59 days in advance, depart on a Tuesday or Wednesday and return on a Friday

How to find the cheapest flight from Denver (DEN) to Sofia (SOF)

All the information you need to plan the best DEN to SOF flight in 2023: compare Denver to Sofia flight prices with the expected peak season, weather and rainfall in Sofia.

Popular in

July

Cheapest in

April

Average price

$1,374

Round-trip from

$541
High demand for flights, 24% potential price rise
Best time to find cheap flights, 39% potential price drop
Average for round-trip flights in June 2023
From Denver Intl to Sofia

DEN - SOF

Price

$541 - $1,263

SOF

Temperature

30.2 - 68 °F

SOF

Rainfall

1.2 - 2.8 inches

Cheap flights from Denver to Sofia in June, July 2023

The best prices found for DEN to SOF flights for June, July
Listed are some of the best fares we've found on flights departing from Denver to Sofia in 2023. More deals are always being added, so be sure to check back regularly.

Denver to Sofia 2023 flight deals

Cheap flights to Sofia from Denver found for this year
Listed are some of the best fares we've found on flights departing from Denver to Sofia in 2023. More deals are always being added, so be sure to check back regularly.

Cheap Lufthansa flights from Denver to Sofia

Find some of the cheapest Lufthansa flights traveling from Denver to Sofia. Deals update often to give you more flight options matching your criteria

Cheap Austrian Airlines flights from Denver to Sofia

Some of the best deals we've found on Austrian Airlines flights traveling from Denver to Sofia. Deals are refreshing constantly so come back soon for more options.

One-way flights to Sofia from Denver

The cheapest one-way flights from Denver to Sofia
Take a look at some of the best available options we've come across on one-way flights from Denver to Sofia. Users can also find round-trip Denver to Sofia flights by using the search form above.

Find flights from Denver to Sofia within your budget

Use the slider to find flights from Denver to Sofia that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$826 - $944

Route

Depart

Return

Price

Denver IntlSofia

DEN - SOF

DENSOF

Denver Intl

Mon 10/30

1 stop16h 45m

Sofia

Wed 11/15

1 stop17h 30m

Denver IntlSofia

DEN - SOF

DENSOF

Denver Intl

Wed 11/1

2 stops16h 28m

Sofia

Wed 11/15

2 stops19h 01m

Denver IntlSofia

DEN - SOF

DENSOF

Denver Intl

Thu 11/2

2 stops16h 28m

Sofia

Thu 11/16

1 stop17h 30m

Denver IntlSofia

DEN - SOF

DENSOF

Denver Intl

Wed 11/1

2 stops16h 20m

Sofia

Sun 11/12

2 stops33h 54m

Denver IntlSofia

DEN - SOF

DENSOF

Denver Intl

Sat 11/4

2 stops19h 50m

Sofia

Mon 11/13

2 stops30h 21m

Denver IntlSofia

DEN - SOF

DENSOF

Denver Intl

Fri 11/3

2 stops16h 20m

Sofia

Tue 11/14

2 stops20h 55m

Denver IntlSofia

DEN - SOF

DENSOF

Denver Intl

Tue 10/31

2 stops17h 35m

Sofia

Sun 11/12

2 stops35h 10m

Denver IntlSofia

DEN - SOF

DENSOF

Denver Intl

Sat 11/4

2 stops19h 50m

Sofia

Fri 11/17

2 stops22h 59m

Denver IntlSofia

DEN - SOF

DENSOF

Denver Intl

Fri 11/3

2 stops21h 50m

Sofia

Sat 11/18

2 stops30h 21m

Flights are sorted by cheapest first

Deals found on 6/4

Reviews of airlines servicing Sofia

Read reviews from past customers who have flown Lufthansa, Austrian Airlines and Air Canada from Denver to Sofia. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.4
Good
153 reviews

Overall

7.4

Comfort

7.1

Food

6.7

Crew

7.9

Entertainment

6.7

Boarding

7.5

Reviews

1 / 10

Crew was friendly and helpful. All the way from the counter to the on board crew. However, plane was outdated, and Austrian Airlines has the policy that they can switch seats whenever and however they want, so the seats I had booked for my wife and son were not the ones we got. Gladly a crew and staff were helpful enough to get them seats together and a gentleman was kind to allow me to swap seats so I could be with my family. No courtesy food, drinks or any. For a 300€ flight and paid luggage you would expect more.

Austrian Airlines
7.4
Good
153 reviews
Austrian Airlines
7.4
Good
153 reviews

Overall

7.4

Comfort

7.1

Food

6.7

Crew

7.9

Entertainment

6.7

Boarding

7.5

Reviews

1 / 10

Crew was friendly and helpful. All the way from the counter to the on board crew. However, plane was outdated, and Austrian Airlines has the policy that they can switch seats whenever and however they want, so the seats I had booked for my wife and son were not the ones we got. Gladly a crew and staff were helpful enough to get them seats together and a gentleman was kind to allow me to swap seats so I could be with my family. No courtesy food, drinks or any. For a 300€ flight and paid luggage you would expect more.

Lufthansa
6.8
Okay
1,193 reviews
Austrian Airlines
7.4
Good
153 reviews

Overall

7.4

Comfort

7.1

Food

6.7

Crew

7.9

Entertainment

6.7

Boarding

7.5

Reviews

1 / 10

Crew was friendly and helpful. All the way from the counter to the on board crew. However, plane was outdated, and Austrian Airlines has the policy that they can switch seats whenever and however they want, so the seats I had booked for my wife and son were not the ones we got. Gladly a crew and staff were helpful enough to get them seats together and a gentleman was kind to allow me to swap seats so I could be with my family. No courtesy food, drinks or any. For a 300€ flight and paid luggage you would expect more.

Air Canada
6.7
Okay
933 reviews
Austrian Airlines
7.4
Good
153 reviews

Overall

7.4

Comfort

7.1

Food

6.7

Crew

7.9

Entertainment

6.7

Boarding

7.5

Reviews

1 / 10

Crew was friendly and helpful. All the way from the counter to the on board crew. However, plane was outdated, and Austrian Airlines has the policy that they can switch seats whenever and however they want, so the seats I had booked for my wife and son were not the ones we got. Gladly a crew and staff were helpful enough to get them seats together and a gentleman was kind to allow me to swap seats so I could be with my family. No courtesy food, drinks or any. For a 300€ flight and paid luggage you would expect more.

British Airways
6.6
Okay
557 reviews
Austrian Airlines
7.4
Good
153 reviews

Overall

7.4

Comfort

7.1

Food

6.7

Crew

7.9

Entertainment

6.7

Boarding

7.5

Reviews

1 / 10

Crew was friendly and helpful. All the way from the counter to the on board crew. However, plane was outdated, and Austrian Airlines has the policy that they can switch seats whenever and however they want, so the seats I had booked for my wife and son were not the ones we got. Gladly a crew and staff were helpful enough to get them seats together and a gentleman was kind to allow me to swap seats so I could be with my family. No courtesy food, drinks or any. For a 300€ flight and paid luggage you would expect more.

Related info for your journey

Useful info, stats and facts about Denver to Sofia flights.

Other flights from Denver

Top 2 airlines flying from Denver to Sofia

The chart below displays the airlines Cheapflights users traveling from Denver to Sofia choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
United AirlinesCheapest$778Average$1,235FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
LufthansaCheapest$884Average$1,501FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Lufthansa flights