How long is the flight from Bulgaria to Denver?

Lufthansa and United Airlines can get you from Bulgaria to Denver in just under 16h 30m. Your travel time can differ by up to . There are 5871 mi between Bulgaria and Denver.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What are the most popular airlines that fly from Bulgaria to Denver?

Lufthansa, Turkish Airlines and United Airlines are the most popular airlines when flying from Bulgaria to Denver.

What airport do you fly into for flights to Denver from Bulgaria?

Denver Intl (DEN), located 18.5 mi from the city center, is the airport you fly into when you book flights from Bulgaria to Denver.

Can I find deals for flights from Bulgaria to Denver that include hotel bookings?

Yes. In addition to deals on Bulgaria to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Bulgaria to Denver?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bulgaria to Denver.

Can I find deals for business class flights from Bulgaria to Denver?

Yes. Cheapflights offers flight deals from Bulgaria to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$827+ Flights from Bulgaria to Denver

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Cheap flight deals from Bulgaria to Denver

Cheapest flights from Bulgaria to Denver
Explore the most affordable flight options available from Bulgaria to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

mar. 12/236:05 amSOF - DEN

1 stop17h 30mLufthansa

jue. 1/224:20 pmDEN - SOF

1 stop21h 25mLufthansa

Deal found 12/9

$861

mar. 12/236:00 amSOF - DEN

2 stops27h 15mUnited Airlines

jue. 1/2211:20 amDEN - SOF

2 stops26h 25mUnited Airlines

Deal found 12/9

$864

Best flights from Bulgaria to Denver
Discover carefully curated flight deals from Bulgaria to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 12, 2025.

vie. 1/166:10 amSOF - DEN

1 stop16h 30mLufthansa

jue. 1/2211:20 amDEN - SOF

2 stops16h 55mLufthansa

Deal found 12/11

$827

vie. 1/166:10 amSOF - DEN

1 stop16h 30mUnited Airlines

jue. 1/224:20 pmDEN - SOF

1 stop21h 25mUnited Airlines

Deal found 12/11

$860

sáb. 1/242:25 pmSOF - DEN

2 stops28h 58mMultiple Airlines

sáb. 1/314:20 pmDEN - SOF

1 stop17h 00mMultiple Airlines

Deal found 12/9

$865

mar. 12/236:05 amSOF - DEN

1 stop17h 30mLufthansa

jue. 1/224:20 pmDEN - SOF

1 stop21h 25mLufthansa

Deal found 12/9

$861

mar. 12/236:00 amSOF - DEN

2 stops27h 15mUnited Airlines

jue. 1/2211:20 amDEN - SOF

2 stops26h 25mUnited Airlines

Deal found 12/9

$864

sáb. 1/246:25 amSOF - DEN

2 stops22h 00mUnited Airlines

sáb. 1/319:40 amDEN - SOF

2 stops18h 35mUnited Airlines

Deal found 12/9

$866

sáb. 1/246:05 amSOF - DEN

1 stop17h 30mLufthansa

sáb. 1/314:20 pmDEN - SOF

1 stop21h 25mLufthansa

Deal found 12/9

$873

Last-minute flights from Bulgaria to Denver
Discover last-minute flight deals from Bulgaria to Denver. Data last updated diciembre 12, 2025 and is based on user searches.

mar. 12/236:05 amSOF - DEN

1 stop17h 30mLufthansa

jue. 1/2211:20 amDEN - SOF

2 stops16h 55mLufthansa

Deal found 12/9

$861

vie. 1/166:10 amSOF - DEN

1 stop16h 30mLufthansa

jue. 1/2211:20 amDEN - SOF

2 stops16h 55mLufthansa

Deal found 12/11

$827

vie. 1/166:10 amSOF - DEN

1 stop16h 30mUnited Airlines

jue. 1/221:31 pmDEN - SOF

2 stops24h 14mUnited Airlines

Deal found 12/11

$864

vie. 1/166:10 amSOF - DEN

2 stops20h 34mAir Canada

jue. 1/2211:15 amDEN - SOF

2 stops17h 35mAir Canada

Deal found 12/10

$865

vie. 1/169:40 pmSOF - DEN

3 stops29h 25mMultiple Airlines

jue. 1/221:25 pmDEN - SOF

3 stops24h 20mMultiple Airlines

Deal found 12/10

$1,531

sáb. 1/246:25 amSOF - DEN

2 stops22h 00mUnited Airlines

sáb. 1/319:40 amDEN - SOF

2 stops18h 35mUnited Airlines

Deal found 12/9

$866

sáb. 1/246:05 amSOF - DEN

1 stop17h 30mLufthansa

sáb. 1/314:20 pmDEN - SOF

1 stop21h 25mLufthansa

Deal found 12/9

$873

sáb. 1/245:00 amSOF - DEN

3 stops22h 05mMultiple Airlines

sáb. 1/314:20 pmDEN - SOF

3 stops25h 45mMultiple Airlines

Deal found 12/9

$1,191

One-way flights from Bulgaria to Denver
Search for one-way flight options from Bulgaria to Denver. Find affordable one-way fares based on user searches. Data last updated diciembre 12, 2025.

sáb. 12/204:20 pmSOF - DEN

3 stops59h 49mMultiple Airlines

Deal found 12/10

$854

mar. 12/306:05 amSOF - DEN

1 stop17h 30mLufthansa

Deal found 12/10

$868

mar. 12/301:45 pmSOF - DEN

3 stops42h 19mMultiple Airlines

Deal found 12/10

$909

sáb. 12/207:05 pmSOF - DEN

2 stops28h 20mLufthansa

Deal found 12/10

$910

sáb. 12/202:25 pmSOF - DEN

2 stops36h 49mUnited Airlines

Deal found 12/11

$921

sáb. 12/204:00 pmSOF - DEN

2 stops39h 06mTurkish Airlines

Deal found 12/9

$951

Find flight deals from Bulgaria to Denver

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$827 (Kiwi.com)
Popular in	May
Cheapest in	February
Average price	$940

Provider with most accurate pricing for Sofia-Denver Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Sofia-Denver Intl flights.

Search Deals

From Bulgaria to Denver Intl

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($51 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

SofiaDenver

SOF - DEN

SOFDEN

Sofia

vie. 1/16

6:10 am-1:40 pm

1 stop16h 30m

Denver Intl

jue. 1/22

11:20 am-1:15 pm

2 stops16h 55m

$827

SofiaDenver

SOF - DEN

SOFDEN

Sofia

vie. 1/16

6:10 am-1:40 pm

1 stop16h 30m

Denver Intl

jue. 1/22

4:20 pm-10:45 pm

1 stop21h 25m

$860

SofiaDenver

SOF - DEN

SOFDEN

Sofia

mar. 12/23

6:05 am-2:35 pm

1 stop17h 30m

Denver Intl

jue. 1/22

4:20 pm-10:45 pm

1 stop21h 25m

$861

SofiaDenver

SOF - DEN

SOFDEN

Sofia

mar. 12/23

6:00 am-12:15 am

2 stops27h 15m

Denver Intl

jue. 1/22

11:20 am-10:45 pm

2 stops26h 25m

$864

SofiaDenver

SOF - DEN

SOFDEN

Sofia

sáb. 1/24

2:25 pm-10:23 am

2 stops28h 58m

Denver Intl

sáb. 1/31

4:20 pm-6:20 pm

1 stop17h 00m

$865

SofiaDenver

SOF - DEN

SOFDEN

Sofia

sáb. 1/24

6:25 am-7:25 pm

2 stops22h 00m

Denver Intl

sáb. 1/31

9:40 am-1:15 pm

2 stops18h 35m

$866

SofiaDenver

SOF - DEN

SOFDEN

Sofia

sáb. 1/24

6:05 am-2:35 pm

1 stop17h 30m

Denver Intl

sáb. 1/31

4:20 pm-10:45 pm

1 stop21h 25m

$873

SofiaDenver

SOF - DEN

SOFDEN

Sofia

sáb. 12/20

4:20 pm-7:09 pm

3 stops59h 49m

$854

SofiaDenver

SOF - DEN

SOFDEN

Sofia

mar. 12/30

6:05 am-4:00 pm

2 stops18h 55m

$883

SofiaDenver

SOF - DEN

SOFDEN

Sofia

mar. 12/30

1:45 pm-11:04 pm

3 stops42h 19m

$909

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 13 results

Best time to book a flight from Bulgaria to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Bulgaria with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Bulgaria to Denver

What is the cheapest month to book a flight from Bulgaria to Denver?

Currently, July is the cheapest month in which you can book a flight from Bulgaria to Denver (average of $722). Flying from Bulgaria to Denver in April is currently the most expensive (average of $861). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BG to DEN?

One of the essential ways to save on airfare from Bulgaria to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 15% on airfare.

Reviews of airlines servicing Denver

See what other customers who have flown with United Airlines, Turkish Airlines, and Lufthansa from Bulgaria to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

United Airlines

7.4

Good

9,095 reviews

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

Turkish Airlines

7.3

Good

4,088 reviews

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

Lufthansa

6.8

Okay

7,626 reviews

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

Related info for your journey

What airport do you fly into for flights to Denver from Bulgaria?
Denver Intl (DEN), located 18.5 mi from the city center, is the airport you fly into when you book flights from Bulgaria to Denver.
How long is the flight from Bulgaria to Denver?
Lufthansa and United Airlines can get you from Bulgaria to Denver in just under 16h 30m. Your travel time can differ by up to . There are 5871 mi between Bulgaria and Denver.
Can I find deals for flights from Bulgaria to Denver that include hotel bookings?
Yes. In addition to deals on Bulgaria to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Bulgaria to Denver?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bulgaria to Denver.
Can I find deals for business class flights from Bulgaria to Denver?
Yes. Cheapflights offers flight deals from Bulgaria to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Bulgaria to Denver?
Currently, July is the cheapest month in which you can book a flight from Bulgaria to Denver (average of $722). Flying from Bulgaria to Denver in April is currently the most expensive (average of $861). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Broomfield

Lakewood

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Greeley

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Cripple Creek

Silverthorne

Central City

Frisco

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Manitou Springs

Fort Morgan

Brighton

Longmont

Idaho Springs

Parker

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Bulgaria to Denver

Airline	Cheapest	Average	Flexibility	On-time
Turkish Airlines	Cheapest$704	Average$807	FlexibilityNo cancel fee	On-time77%
United Airlines	Cheapest$729	Average$785	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$749	Average$995	FlexibilityNo cancel fee	On-time76%

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$827+ Cheap flights from Bulgaria to Denver (DEN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Bulgaria to Denver with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Bulgaria to Denver

Cheapest flights from Bulgaria to DenverExplore the most affordable flight options available from Bulgaria to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

Explore the most affordable flight options available from Bulgaria to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

Find flight deals from Bulgaria to Denver

Keep the following information in mind while searching for Bulgaria to Denver flight deals. Data was last updated diciembre 12, 2025.

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Bulgaria to Denver that are best for you.

Best time to book a flight from Bulgaria to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Bulgaria with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Bulgaria to Denver

What is the cheapest month to book a flight from Bulgaria to Denver?

What is the cheapest time of day to fly from BG to DEN?

Find hourly flight availability from Bulgaria to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 12, 2025.

Reviews of airlines servicing Denver

See what other customers who have flown with United Airlines, Turkish Airlines, and Lufthansa from Bulgaria to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Bulgaria to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Denver from Bulgaria?

How long is the flight from Bulgaria to Denver?

Can I find deals for flights from Bulgaria to Denver that include hotel bookings?

How can I find direct flights from Bulgaria to Denver?

Can I find deals for business class flights from Bulgaria to Denver?

What is the cheapest month to book a flight from Bulgaria to Denver?

Traveling to a place near Denver?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Bulgaria to Denver

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Top 3 airlines flying from Bulgaria to Denver

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Cheapest flights from Bulgaria to Denver
Explore the most affordable flight options available from Bulgaria to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.