$288 Cheap Flights from Raleigh (RDU) to Sofia (SOF)

View $288 flight on Tue, Aug 11, 2026Opens in a new window

Popular airlines from Raleigh-Durham International Airport (RDU) to Sofia Airport (SOF)

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Cheap Flights from Raleigh to Sofia (RDU-SOF)

Prices were available within the past 7 days and start at $288 for one-way flights and $679 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Aug 17 - Thu, Aug 20
RDU
Raleigh
SOF
Sofia
$679 Roundtrip, found 16 hours ago
$679
Roundtrip
found 16 hours ago
Select United flight, departing Mon, Aug 17 from Raleigh to Sofia, returning Thu, Aug 20, priced at $679 found 16 hours ago
Swiss International Air Lines
Mon, Aug 17 - Thu, Aug 20
RDU
Raleigh
SOF
Sofia
$681 Roundtrip, found 16 hours ago
$681
Roundtrip
found 16 hours ago
Select Swiss International Air Lines flight, departing Mon, Aug 17 from Raleigh to Sofia, returning Thu, Aug 20, priced at $681 found 16 hours ago
United
Sun, Oct 25 - Tue, Nov 3
RDU
Raleigh
SOF
Sofia
$682 Roundtrip, found 2 days ago
$682
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 25 from Raleigh to Sofia, returning Tue, Nov 3, priced at $682 found 2 days ago
Air Canada
Sun, Oct 25 - Tue, Nov 3
RDU
Raleigh
SOF
Sofia
$686 Roundtrip, found 2 days ago
$686
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sun, Oct 25 from Raleigh to Sofia, returning Tue, Nov 3, priced at $686 found 2 days ago
Lufthansa
Mon, Aug 17 - Thu, Aug 20
RDU
Raleigh
SOF
Sofia
$686 Roundtrip, found 16 hours ago
$686
Roundtrip
found 16 hours ago
Select Lufthansa flight, departing Mon, Aug 17 from Raleigh to Sofia, returning Thu, Aug 20, priced at $686 found 16 hours ago
United
Sun, Oct 25 - Tue, Nov 3
RDU
Raleigh
SOF
Sofia
$687 Roundtrip, found 2 days ago
$687
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 25 from Raleigh to Sofia, returning Tue, Nov 3, priced at $687 found 2 days ago
United
Mon, Aug 17 - Thu, Aug 20
RDU
Raleigh
SOF
Sofia
$689 Roundtrip, found 16 hours ago
$689
Roundtrip
found 16 hours ago
Select United flight, departing Mon, Aug 17 from Raleigh to Sofia, returning Thu, Aug 20, priced at $689 found 16 hours ago
United
Mon, Aug 17 - Thu, Aug 20
RDU
Raleigh
SOF
Sofia
$691 Roundtrip, found 16 hours ago
$691
Roundtrip
found 16 hours ago
Select United flight, departing Mon, Aug 17 from Raleigh to Sofia, returning Thu, Aug 20, priced at $691 found 16 hours ago
Air Canada
Sun, Oct 25 - Tue, Nov 3
RDU
Raleigh
SOF
Sofia
$691 Roundtrip, found 2 days ago
$691
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sun, Oct 25 from Raleigh to Sofia, returning Tue, Nov 3, priced at $691 found 2 days ago
British Airways
Wed, Apr 22 - Fri, May 1
RDU
Raleigh
SOF
Sofia
$741 Roundtrip, found 16 hours ago
$741
Roundtrip
found 16 hours ago
Select British Airways flight, departing Wed, Apr 22 from Raleigh to Sofia, returning Fri, May 1, priced at $741 found 16 hours ago

Frequently asked questions

How much does a flight from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) cost?
You can find cheap one-way flights from $288 and cheap return flights from $679 Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) with Expedia. One-way flights usually range from $342 to $3570, and return flights typically cost between $679 and $5245. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
The cheapest month to fly from RDU to SOF is August when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
Enter RDU to SOF and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
Aer Lingus is one of the cheapest airlines offering connecting flights from Raleigh, NC (RDU) to Sofia (SOF) with a layover in Dublin (DUB), starting from around $1,118. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
To find a cheap flight from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from RDU to SOF. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
The most popular departure times for flights from Raleigh, NC (RDU) to Sofia (SOF) are in the late afternoon, from 3pm to 6pm. About 43% of passengers prefer this time window. Many major carriers, including Lufthansa and United Airlines, offer flights during this window. This timing is popular because it allows you to travel after a productive day.
How long does it take to fly from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
Flights from RDU to SOF with one stop typically take around 12 hours 50 minutes, covering approximately 5,130 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
Select the "Business class" and "First class" filters when looking for RDU to SOF flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) flight with Expedia?
It's easy to earn miles on a Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) at the last minute?
Typically, booking a last minute flight from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) flight and hotel package?
Securing a Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) Sofia Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF)?
If you booked your Raleigh, NC (RDU-Raleigh - Durham Intl.) to Sofia (SOF) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Raleigh - Durham Intl.
Destination airport
Sofia
Airlines serving
Air Canada, Air France, Air Serbia, Austrian Airlines, British Airways, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$678
Distance
5129 mi

Book with confidence

Raleigh to Sofia Flights

The cheapest times to fly from Raleigh to Sofia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Raleigh to Sofia are during the month of August. You can find some of the cheapest flights from Raleigh to Sofia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Raleigh to Sofia

Sunday is one of the best days to book for cheap flights from Raleigh to Sofia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Raleigh to Sofia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Raleigh to Sofia in 2026. You can also book with separate airlines for your outbound and return journeys, from $288 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Raleigh to Sofia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Raleigh to Sofia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Raleigh to Sofia Flights

*Flight schedules are subject to change.

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