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$556+ 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
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
1 adult, Economy
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Cheapflights Tip: The best prices from Aurora to Sofia are usually found in February or April, 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 April 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$636
(FlightHub)

One-way from

$556
(American Airlines)

Popular in

May

Cheapest in

February

Average price

$715
Provider with most accurate pricing for Denver Intl-Sofia flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Sofia flights.
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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. 20% potential increase in price ($248 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 4, 2025.

This FlightHub deal was found by Cheapflights users on 4/3. 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.
Thu 9/47:50 pmDEN - SOF
1 stop15h 35mTurkish Airlines
Tue 9/99:25 amSOF - DEN
1 stop17h 30mTurkish Airlines
Deal found 4/3$636
This United Airlines deal was found by Cheapflights users on 4/3. 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 4/144:05 pmDEN - SOF
1 stop17h 35mUnited Airlines
Thu 5/226:15 amSOF - DEN
2 stops21h 05mUnited Airlines
Deal found 4/3$705
This SWISS deal was found by Cheapflights users on 4/3. 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 7/215:50 pmDEN - SOF
1 stop31h 15mSWISS
Tue 8/261:15 pmSOF - DEN
1 stop36h 05mSWISS
Deal found 4/3$710
This Air Canada deal was found by Cheapflights users on 4/3. 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.
Sat 4/195:40 pmDEN - SOF
2 stops33h 20mAir Canada
Thu 5/226:15 amSOF - DEN
2 stops37h 12mAir Canada
Deal found 4/3$711
This Lufthansa deal was found by Cheapflights users on 4/3. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/144:05 pmDEN - SOF
1 stop21h 55mLufthansa
Thu 5/226:00 amSOF - DEN
1 stop16h 45mLufthansa
Deal found 4/3$716
This Kiwi.com deal was found by Cheapflights users on 4/3. 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.
Fri 4/186:35 pmDEN - SOF
1 stop34h 00mMultiple Airlines
Tue 5/208:10 pmSOF - DEN
2 stops46h 47mMultiple Airlines
Deal found 4/3$829
This American Airlines deal was found by Cheapflights users on 4/3. 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.
Sun 6/86:35 pmDEN - SOF
1 stop15h 35mAmerican Airlines
Sun 8/39:10 pmSOF - DEN
1 stop28h 15mAmerican Airlines
Deal found 4/3$925
This Booking.com deal was found by Cheapflights users on 4/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/112:11 pmDEN - SOF
2 stops38h 19mBritish Airways
Sun 8/39:10 pmSOF - DEN
1 stop28h 15mBritish Airways
Deal found 4/3$1,021
This Justfly.com deal was found by Cheapflights users on 4/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1511:20 amDEN - SOF
2 stops27h 35mAustrian Airlines
Sat 5/248:00 amSOF - DEN
2 stops21h 05mAustrian Airlines
Deal found 4/3$1,136
This KLM deal was found by Cheapflights users on 4/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/410:31 amDEN - SOF
2 stops18h 29mKLM
Wed 6/187:00 amSOF - DEN
2 stops22h 19mKLM
Deal found 4/3$1,253
This Air France deal was found by Cheapflights users on 4/3. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2210:30 amDEN - SOF
2 stops18h 30mAir France
Sat 8/237:00 amSOF - DEN
2 stops21h 58mAir France
Deal found 4/3$1,419

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 April 4, 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

Thu 9/4

7:50 pm-8:25 pm

1 stop15h 35m

Sofia

Tue 9/9

9:25 am-5:55 pm

1 stop17h 30m

$636

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 4/14

4:05 pm-6:40 pm

1 stop17h 35m

Sofia

Thu 5/22

6:15 am-6:20 pm

2 stops21h 05m

$705

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 7/21

5:50 pm-10:05 am

1 stop31h 15m

Sofia

Tue 8/26

1:15 pm-4:20 pm

1 stop36h 05m

$710

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sat 4/19

5:40 pm-12:00 pm

2 stops33h 20m

Sofia

Thu 5/22

6:15 am-10:27 am

2 stops37h 12m

$711

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 4/14

4:05 pm-11:00 pm

1 stop21h 55m

Sofia

Fri 5/23

6:00 am-1:45 pm

1 stop16h 45m

$716

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Fri 4/18

6:35 pm-1:35 pm

1 stop34h 00m

Sofia

Tue 5/20

8:10 pm-9:57 am

2 stops46h 47m

$829

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 6/8

6:35 pm-7:10 pm

1 stop15h 35m

Sofia

Sun 8/3

9:10 pm-4:25 pm

1 stop28h 15m

$925

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 6/11

2:11 pm-1:30 pm

2 stops38h 19m

Sofia

Sun 8/3

9:10 pm-4:25 pm

1 stop28h 15m

$1,021

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 4/15

11:20 am-11:55 pm

2 stops27h 35m

Sofia

Sat 5/24

8:00 am-8:05 pm

2 stops21h 05m

$1,136

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 6/4

10:31 am-2:00 pm

2 stops18h 29m

Sofia

Wed 6/18

7:00 am-8:19 pm

2 stops22h 19m

$1,253

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Showing 1-10 of 13 results
1
2

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 March 28, 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 $1,243). 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 April 4, 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 April 4, 2025.
KLM
7.8
Good
1,324 reviews

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,324 reviews
KLM
7.8
Good
1,324 reviews

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Austrian Airlines
7.6
Good
771 reviews
KLM
7.8
Good
1,324 reviews

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
SWISS
7.5
Good
1,574 reviews
KLM
7.8
Good
1,324 reviews

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.4
Good
1,427 reviews
KLM
7.8
Good
1,324 reviews

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,618 reviews
KLM
7.8
Good
1,324 reviews

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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 4 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 $1,243). 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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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 4 airlines flying from Aurora to Sofia

Discover the top 4 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 April 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$532Average$729FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$687Average$997FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$762Average$1,240FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$813Average$1,035FlexibilityNo cancel feeOn-time70%

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