HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bulgaria

$293+ Cheap flights from Aurora, CO to Bulgaria

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SOF
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Aurora to Bulgaria with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Aurora to Bulgaria

Cheapest flights from Aurora to Bulgaria
Explore the most affordable flight options available from Aurora to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This Trip.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/163:40 pmDEN - SOF
2 stops18h 55mMultiple Airlines
Tue 12/239:35 amSOF - DEN
1 stop17h 00mMultiple Airlines
Deal found 12/15$1,710
This FlightHub deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:20 pmDEN - SOF
1 stop16h 30mTurkish Airlines
Tue 12/239:35 amSOF - DEN
1 stop17h 00mTurkish Airlines
Deal found 12/15$1,784
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1610:15 amDEN - SOF
2 stops18h 30mUnited Airlines
Tue 12/236:00 amSOF - DEN
1 stop16h 40mUnited Airlines
Deal found 12/15$1,796

Find flight deals from Aurora to Bulgaria

Keep the following information in mind while searching for Aurora to Bulgaria flight deals. Data was last updated December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$590
(FlightHub)

One-way from

$293
(Trip.com)

Popular in

July

Cheapest in

April

Average price

$1,026
Provider with most accurate pricing for Denver Intl-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Sofia flights.
Search Deals
From Aurora to Bulgaria
Search Deals
One-way flight from Aurora to Bulgaria
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($270 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Aurora to Bulgaria 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, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
Use the filters below to find and compare flights from Aurora to Bulgaria that are best for you.

Fly from

Aurora

Fly to

Bulgaria

Route

Depart

Return

Price

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 4/26

8:25 pm-8:45 am

1 stop27h 20m

Sofia

Sun 5/3

9:35 am-6:25 pm

1 stop17h 50m

$590

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 2/10

7:20 pm-3:10 pm

1 stop34h 50m

Sofia

Thu 2/19

9:35 am-5:35 pm

1 stop17h 00m

$590

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 4/5

8:25 pm-3:00 pm

1 stop33h 35m

Sofia

Sun 4/12

9:35 am-6:25 pm

1 stop17h 50m

$599

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Fri 1/30

7:20 pm-8:50 pm

1 stop16h 30m

Sofia

Tue 2/17

9:35 am-5:35 pm

1 stop17h 00m

$615

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 4/25

8:25 pm-8:15 pm

1 stop14h 50m

Sofia

Sun 5/3

9:35 am-6:25 pm

1 stop17h 50m

$624

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 1/31

7:20 pm-3:10 pm

1 stop34h 50m

Sofia

Fri 2/20

4:00 pm-5:35 pm

1 stop34h 35m

$641

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 1/29

7:20 pm-3:10 pm

1 stop34h 50m

Sofia

Mon 2/16

4:00 pm-5:35 pm

1 stop34h 35m

$652

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 1/31

7:20 pm-3:10 pm

1 stop34h 50m

Sofia

Tue 2/17

9:35 am-5:35 pm

1 stop17h 00m

$652

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 4/25

8:25 pm-3:00 pm

1 stop33h 35m

Sofia

Tue 5/5

9:35 am-6:25 pm

1 stop17h 50m

$657

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 4/28

8:25 pm-8:15 pm

1 stop14h 50m

Sofia

Tue 5/5

9:35 am-6:25 pm

1 stop17h 50m

$657

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 13 results
1
2

Best time to book a flight from Aurora to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria from Aurora 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 Aurora to Bulgaria

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

Currently, February is the cheapest month in which you can book a flight from Aurora to Bulgaria (average of $518). Flying from Aurora to Bulgaria in December is currently the most expensive (average of $908). 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 9UR to BG?

Find hourly flight availability from Aurora to Bulgaria. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

One of the essential ways to save on airfare from Aurora to Bulgaria is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 32% on airfare.

Reviews of airlines servicing Bulgaria

Get insights into the airlines that provide service to Bulgaria. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bulgaria. Reviews last updated December 15, 2025.
See what other customers who have flown with United Airlines, Turkish Airlines, and Lufthansa from Aurora to Bulgaria 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
9,094 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,094 reviews
United Airlines
7.4
Good
9,094 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Turkish Airlines
7.3
Good
4,100 reviews
United Airlines
7.4
Good
9,094 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Lufthansa
6.8
Okay
7,631 reviews
United Airlines
7.4
Good
9,094 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

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

  • How long is the flight from Aurora to Bulgaria?

    For as low as $590, Turkish Airlines can have you in Bulgaria from Aurora in 27h 20m. There are 5871 mi between Aurora and Bulgaria.

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

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

  • How can I find direct flights from Aurora to Bulgaria?

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

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

    Yes. Cheapflights offers flight deals from Aurora to Bulgaria 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 Aurora to Bulgaria?

    Currently, February is the cheapest month in which you can book a flight from Aurora to Bulgaria (average of $518). Flying from Aurora to Bulgaria in December is currently the most expensive (average of $908). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Aurora to Bulgaria

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Heathrow flights
Denver to Dublin flights
Denver to Leonardo da Vinci/Fiumicino flights
Denver to Charles de Gaulle flights
Denver to Frankfurt flights
Denver to Gatwick flights
Denver to Orly flights
Denver to Athens flights
Denver to Barcelona-El Prat flights
Denver to Istanbul flights
Denver to Munich flights
Denver to London City flights
Denver to Madrid flights
Denver to Lisbon flights
Denver to Amsterdam flights
Denver to Vicenza flights
Denver to Malpensa flights
Denver to Keflavik Intl flights
Denver to Linate flights
Denver to Stansted flights
Denver to Sabiha Gokcen flights
Denver to Zurich flights
Denver to Edinburgh flights
Denver to Oslo Gardermoen flights
Denver to Florence flights
Denver to Naples flights
Denver to Geneva flights
Denver to Bruxelles-National flights
Denver to Glasgow Intl flights
Denver to Berlin flights
Denver to Copenhagen flights
Denver to Luton flights
Denver to Manchester flights
Denver to Porto flights
Denver to Arlanda flights
Denver to Budapest flights
Denver to Prague flights
Denver to Catania flights
Denver to Duesseldorf Intl flights
Denver to Shannon flights
Denver to Helsinki flights
Denver to Vienna flights
Denver to Otopeni Intl flights
Denver to Bologna flights
Denver to Split flights
Denver to Dubrovnik flights
Denver to Frederic Chopin flights

Top 3 airlines flying from Aurora to Bulgaria

Discover the top 3 airlines that operate flights from Aurora to Bulgaria. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$522Average$626FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$616Average$1,114FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$656Average$1,015FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.