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Sofia

$516+ Cheap flights from Aurora, CO to Sofia (SOF)

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SOF
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheapflights Tip: The best prices from Aurora to Sofia are usually found in April or February, booked 48 days in advance, depart on a Thursday or Sunday and return on a Friday

Cheap flight deals from Aurora to Sofia

Keep the following information in mind while searching for Aurora to Sofia flight deals. Data was last updated June 18, 2025.

Round-trip from

$634
(FlightHub)

One-way from

$516
(Lufthansa)

Popular in

May

Cheapest in

April

Average price

$1,215
From Aurora to Sofia
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One-way flight from Aurora to Sofia
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Highest demand for flights based on searches. 9% potential increase in price ($92 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Aurora to Sofia

Cheapest flights from Aurora to Sofia
Explore the most affordable flight options available from Aurora to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

This FlightHub deal was found by Cheapflights users on 6/16. 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.
Sat 8/237:50 pmDEN - SOF
1 stop27h 45mTurkish Airlines
Sat 9/69:25 amSOF - DEN
1 stop17h 30mTurkish Airlines
Deal found 6/16$634
This FlightHub deal was found by Cheapflights users on 6/16. 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.
Wed 8/274:15 pmDEN - SOF
1 stop21h 45mLufthansa
Wed 9/106:15 amSOF - DEN
1 stop18h 20mLufthansa
Deal found 6/16$679
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Mon 9/18:20 pmDEN - SOF
1 stop17h 40mUnited Airlines
Fri 9/126:15 amSOF - DEN
2 stops21h 03mUnited Airlines
Deal found 6/17$680
This Air Canada deal was found by Cheapflights users on 6/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/277:45 amDEN - SOF
2 stops19h 15mAir Canada
Wed 9/106:15 amSOF - DEN
2 stops22h 08mAir Canada
Deal found 6/17$686
This SWISS deal was found by Cheapflights users on 6/17. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:50 pmDEN - SOF
1 stop31h 15mSWISS
Mon 9/83:30 pmSOF - DEN
2 stops57h 39mSWISS
Deal found 6/17$701
This Austrian Airlines deal was found by Cheapflights users on 6/17. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/611:18 amDEN - SOF
2 stops19h 02mAustrian Airlines
Fri 9/1212:25 pmSOF - DEN
2 stops37h 10mAustrian Airlines
Deal found 6/17$859
This British Airways deal was found by Cheapflights users on 6/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/29:41 amDEN - SOF
2 stops25h 59mBritish Airways
Mon 9/88:00 pmSOF - DEN
1 stop29h 25mBritish Airways
Deal found 6/17$921
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/217:50 pmDEN - SOF
1 stop33h 55mMultiple Airlines
Mon 7/2111:55 amSOF - DEN
2 stops39h 00mMultiple Airlines
Deal found 6/17$1,304
This American Airlines deal was found by Cheapflights users on 6/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/185:30 pmDEN - SOF
1 stop17h 40mAmerican Airlines
Mon 11/245:25 pmSOF - DEN
1 stop31h 00mAmerican Airlines
Deal found 6/16$4,405

Cheapflights Fare Finder

Customize your flight search to find flights from Aurora 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, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2025.
Use the filters below to find and compare flights from Aurora to Sofia that are best for you.

Fly from

Aurora

Fly to

Sofia

Route

Depart

Return

Price

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 8/23

7:50 pm-8:35 am

1 stop27h 45m

Sofia

Sat 9/6

9:25 am-5:55 pm

1 stop17h 30m

$634

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 8/27

4:15 pm-11:00 pm

1 stop21h 45m

Sofia

Wed 9/10

6:15 am-3:35 pm

1 stop18h 20m

$679

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 9/1

8:20 pm-11:00 pm

1 stop17h 40m

Sofia

Wed 9/10

6:15 am-6:18 pm

2 stops21h 03m

$680

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 8/27

7:45 am-12:00 pm

2 stops19h 15m

Sofia

Wed 9/10

6:15 am-7:23 pm

2 stops22h 08m

$686

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 9/1

5:50 pm-10:05 am

1 stop31h 15m

Sofia

Mon 9/8

3:30 pm-4:09 pm

2 stops57h 39m

$701

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 9/6

11:18 am-3:20 pm

2 stops19h 02m

Sofia

Fri 9/12

12:25 pm-4:35 pm

2 stops37h 10m

$859

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 9/2

9:41 am-8:40 pm

2 stops25h 59m

Sofia

Mon 9/8

8:00 pm-4:25 pm

1 stop29h 25m

$921

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 6/21

7:50 pm-2:45 pm

1 stop33h 55m

Sofia

Mon 7/21

11:55 am-5:55 pm

2 stops39h 00m

$1,304

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 9/10

4:15 pm-11:00 pm

1 stop21h 45m

$516

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/18

Best time to book a flight from Aurora to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia 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 Sofia

How far ahead should I book a flight from Aurora to Sofia?

Use this chart to determine the optimal time to book a round-trip flight from Aurora to Sofia. Price data was last updated on June 13, 2025.

The price you pay for your flight from Aurora to Sofia may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from Aurora to Sofia (average of $632). Flying from Aurora to Sofia in June is currently the most expensive (average of $1,201). 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 SOF?

Find hourly flight availability from Aurora to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2025.

When flying from Aurora to Sofia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Sofia by month

Plan your trip to Sofia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sofia ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Sofia when rainfall is around 1.2 in.

Temperature in Sofia by month

Plan your trip to Sofia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sofia, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated June 18, 2025.
See what other customers who have flown with Austrian Airlines, SWISS and United Airlines from Aurora to Sofia have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
804 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
804 reviews
Austrian Airlines
7.6
Good
804 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
SWISS
7.5
Good
1,628 reviews
Austrian Airlines
7.6
Good
804 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
United Airlines
7.4
Good
8,809 reviews
Austrian Airlines
7.6
Good
804 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Turkish Airlines
7.3
Good
3,852 reviews
Austrian Airlines
7.6
Good
804 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
American Airlines
7.2
Good
10,000 reviews
Austrian Airlines
7.6
Good
804 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Related info for your journey

Find useful and relevant information for your journey from Aurora to Sofia. 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 Sofia from Aurora?

    If you book a flight to Sofia from Aurora, you will be flying to Sofia, which is the city’s only airport. Sofia (SOF) is located 4.2 mi from the center of Sofia. There are 0 flights from Aurora to Sofia per day from 3 different airlines.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Aurora to Sofia (average of $632). Flying from Aurora to Sofia in June is currently the most expensive (average of $1,201). 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

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Alternative routes for Aurora to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Sofia flights
Grand Junction to Sofia flights

Top 3 airlines flying from Aurora to Sofia

Discover the top 3 airlines that operate flights from Aurora to Sofia. 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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$531Average$726FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$653Average$873FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$672Average$1,155FlexibilityNo cancel feeOn-time76%

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