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Sofia

$535+ Cheap flights from Durham, NC to Sofia (SOF)

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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — SOF
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Durham to Sofia

Best flights from Durham to Sofia
Discover carefully curated flight deals from Durham to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

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.
Thu 1/151:29 pmRDU - SOF
2 stops26h 16mUnited Airlines
Mon 1/196:10 amSOF - RDU
1 stop14h 35mUnited Airlines
Deal found 12/15$535
This Air France deal was found by Cheapflights users on 12/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/301:13 pmRDU - SOF
2 stops17h 42mAir France
Fri 2/67:00 amSOF - RDU
1 stop16h 45mAir France
Deal found 12/16$540
This Air France deal was found by Cheapflights users on 12/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/301:20 pmRDU - SOF
2 stops17h 35mMultiple Airlines
Fri 2/67:00 amSOF - RDU
2 stops18h 37mMultiple Airlines
Deal found 12/16$544

Find flight deals from Durham to Sofia

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

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$535
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$1,851
Provider with most accurate pricing for Raleigh-Durham-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Raleigh-Durham-Sofia flights.
Search Deals
From Durham to Sofia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($138 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($78 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 Durham 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 December 18, 2025.
Use the filters below to find and compare flights from Durham to Sofia that are best for you.

Fly from

Durham

Fly to

Sofia

Route

Depart

Return

Price

RaleighSofia

RDU - SOF

RDUSOF

Raleigh-Durham

Thu 1/15

1:29 pm-10:45 pm

2 stops26h 16m

Sofia

Mon 1/19

6:10 am-1:45 pm

1 stop14h 35m

$535

RaleighSofia

RDU - SOF

RDUSOF

Raleigh-Durham

Fri 1/30

1:13 pm-1:55 pm

2 stops17h 42m

Sofia

Fri 2/6

7:00 am-4:45 pm

1 stop16h 45m

$540

RaleighSofia

RDU - SOF

RDUSOF

Raleigh-Durham

Fri 1/30

1:20 pm-1:55 pm

2 stops17h 35m

Sofia

Fri 2/6

7:00 am-6:37 pm

2 stops18h 37m

$544

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Best time to book a flight from Durham to Sofia

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

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

Currently, November is the cheapest month in which you can book a flight from Durham to Sofia (average of $599). Flying from Durham to Sofia in December is currently the most expensive (average of $1,851). 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 DU8 to SOF?

Find hourly flight availability from Durham 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 December 18, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 37% on flights from Durham to Sofia by exploring options for tickets in the evening.

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 December 18, 2025.
Read through reviews of airlines operating flights from Durham to Sofia, such as United Airlines and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,092 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
Lufthansa
6.8
Okay
7,635 reviews
United Airlines
7.4
Good
9,092 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Related info for your journey

Find useful and relevant information for your journey from Durham 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 Durham?

    Sofia (SOF), located 4.2 mi from the city center, is the airport you fly into when you book flights from Durham to Sofia. 2 airlines have flights to Sofia from Durham on a regular basis. Booking flights from Durham to Sofia should not be difficult; the airport handles an average of 0 inbound flights from Durham per day.

  • How long is the flight from Durham to Sofia?

    Departing from Durham to Sofia will take you 17h 42m. The distance from Durham to Sofia is about 5126 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Durham to Sofia (average of $599). Flying from Durham to Sofia in December is currently the most expensive (average of $1,851). 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 Durham to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Durham to Sofia

Discover the top 2 airlines that operate flights from Durham 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$660Average$882FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$677Average$968FlexibilityNo cancel feeOn-time76%

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