HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bulgaria

$260+ Cheap flights from Dulles Intl (IAD) 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — 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 Dulles Intl 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 Dulles Intl to Bulgaria

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

This CrystalTravel deal was found by Cheapflights users on 12/14. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:25 pmIAD - SOF
1 stop14h 50mMultiple Airlines
Tue 1/136:00 amSOF - IAD
1 stop16h 50mMultiple Airlines
Deal found 12/14$657
This CrystalTravel deal was found by Cheapflights users on 12/14. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:20 pmIAD - SOF
2 stops16h 40mAustrian Airlines
Tue 1/136:45 pmSOF - IAD
2 stops26h 50mAustrian Airlines
Deal found 12/14$699
This Justfly.com deal was found by Cheapflights users on 12/13. 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.
Mon 12/296:00 pmIAD - SOF
1 stop22h 55mMultiple Airlines
Mon 1/123:00 pmSOF - IAD
1 stop32h 40mMultiple Airlines
Deal found 12/13$709
This FlightHub deal was found by Cheapflights users on 12/13. 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.
Sun 12/2810:55 pmIAD - SOF
1 stop16h 50mMultiple Airlines
Thu 1/86:45 pmSOF - IAD
2 stops32h 30mMultiple Airlines
Deal found 12/13$726
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:25 pmIAD - SOF
2 stops23h 30mMultiple Airlines
Sat 1/246:25 amSOF - IAD
2 stops16h 21mMultiple Airlines
Deal found 12/15$734
This Cheapflightsfares deal was found by Cheapflights users on 12/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:25 pmIAD - SOF
2 stops35h 25mAustrian Airlines
Mon 1/126:45 pmSOF - IAD
2 stops27h 45mAustrian Airlines
Deal found 12/13$736
This FlightHub deal was found by Cheapflights users on 12/14. 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.
Sun 12/286:00 pmIAD - VAR
1 stop14h 15mAustrian Airlines
Fri 1/94:00 pmVAR - IAD
2 stops53h 00mAustrian Airlines
Deal found 12/14$740
This FlightHub deal was found by Cheapflights users on 12/14. 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.
Sun 12/2810:55 pmIAD - VAR
2 stops33h 20mMultiple Airlines
Fri 1/94:00 pmVAR - IAD
2 stops53h 00mMultiple Airlines
Deal found 12/14$741
This Austrian 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:25 pmIAD - SOF
2 stops23h 30mAustrian Airlines
Sat 1/247:55 amSOF - IAD
1 stop13h 45mAustrian Airlines
Deal found 12/15$743
This FlightHub deal was found by Cheapflights users on 12/14. 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 12/276:10 pmIAD - VAR
2 stops38h 05mAustrian Airlines
Fri 1/94:00 pmVAR - IAD
2 stops53h 00mAustrian Airlines
Deal found 12/14$744
This FlightHub deal was found by Cheapflights users on 12/14. 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.
Sun 12/286:00 pmIAD - VAR
1 stop14h 15mMultiple Airlines
Thu 1/86:05 pmVAR - IAD
2 stops26h 55mMultiple Airlines
Deal found 12/14$745
This FlightHub deal was found by Cheapflights users on 12/14. 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.
Sun 12/2810:55 pmIAD - VAR
2 stops33h 20mLufthansa
Thu 1/86:05 pmVAR - IAD
2 stops26h 55mLufthansa
Deal found 12/14$746

Find flight deals from Dulles Intl to Bulgaria

Keep the following information in mind while searching for Dulles Intl 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

$533
(Justfly.com)

One-way from

$260
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,060
Provider with most accurate pricing for Washington, D.C. (WAS)-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Sofia flights.
Search Deals
From Washington, D.C. Dulles Intl to Bulgaria
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Bulgaria
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 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 Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Bulgaria that are best for you.

Fly from

Dulles Intl

Fly to

Bulgaria

Route

Depart

Return

Price

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Mon 1/19

9:15 pm-8:50 pm

1 stop16h 35m

Sofia

Tue 1/27

9:35 am-7:20 pm

1 stop16h 45m

$533

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Thu 1/29

9:15 pm-8:45 am

1 stop28h 30m

Sofia

Thu 2/5

4:00 pm-7:20 pm

1 stop34h 20m

$537

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 1/27

1:30 pm-8:45 am

1 stop12h 15m

Sofia

Tue 2/3

9:35 am-7:20 pm

1 stop16h 45m

$537

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 3/10

2:30 pm-8:45 am

1 stop12h 15m

Sofia

Sat 6/6

9:35 am-11:35 am

1 stop33h 00m

$561

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sat 3/14

10:15 pm-8:50 pm

1 stop16h 35m

Sofia

Sat 3/28

9:35 am-8:20 pm

1 stop16h 45m

$588

Washington, D.C.Varna

IAD - VAR

IADVAR

Washington, D.C. Dulles Intl

Thu 1/29

1:30 pm-9:10 am

1 stop12h 40m

Varna

Mon 2/2

9:25 pm-7:20 pm

1 stop28h 55m

$622

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Thu 1/29

1:30 pm-8:50 pm

1 stop24h 20m

Sofia

Mon 2/2

9:40 pm-11:45 am

1 stop21h 05m

$643

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 2/1

10:15 pm-11:55 pm

2 stops18h 40m

Sofia

Sun 2/15

7:55 am-2:40 pm

1 stop13h 45m

$645

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Thu 1/29

7:40 pm-9:50 am

3 stops31h 10m

Sofia

Thu 2/5

8:05 am-6:30 pm

2 stops17h 25m

$663

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 3/1

4:30 pm-6:20 pm

2 stops18h 50m

Sofia

Fri 3/13

6:10 am-8:54 pm

2 stops20h 44m

$690

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 23 results
1
2
3

Best time to book a flight from Dulles Intl to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Bulgaria

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Bulgaria?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bulgaria (average of $535). Flying from Washington, D.C. Dulles Intl Airport to Bulgaria in June is currently the most expensive (average of $762). 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 IAD to BG?

Find hourly flight availability from Dulles Intl 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.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Bulgaria at noon. Doing so could potentially save you 43% on the flight price compared to flying in the evening, which is usually more expensive.

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.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Bulgaria, such as Austrian Airlines, United Airlines, and Turkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
879 reviews

Comfort

7.3

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Austrian Airlines
7.6
Good
879 reviews
Austrian Airlines
7.6
Good
879 reviews

Comfort

7.3

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
United Airlines
7.4
Good
9,094 reviews
Austrian Airlines
7.6
Good
879 reviews

Comfort

7.3

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Turkish Airlines
7.3
Good
4,100 reviews
Austrian Airlines
7.6
Good
879 reviews

Comfort

7.3

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Lufthansa
6.8
Okay
7,631 reviews
Austrian Airlines
7.6
Good
879 reviews

Comfort

7.3

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
ITA Airways
6.7
Okay
1,107 reviews
Austrian Airlines
7.6
Good
879 reviews

Comfort

7.3

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Bulgaria?

    Airlines like Turkish Airlines fly from Washington, D.C. Dulles Intl Airport to Bulgaria in about 16h 35m. The time it takes to get you to your destination can typically vary by up to . Washington, D.C. Dulles Intl Airport and Bulgaria are separated by a distance of 4931 mi.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Bulgaria?

    Most travelers choose Washington, D.C. Dulles Intl - Sofia, Washington, D.C. Dulles Intl - Varna or Washington, D.C. Dulles Intl - Bourgas when deciding on the best route from Washington, D.C. Dulles Intl Airport to Bulgaria.

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

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

  • How can I find direct flights from Dulles Intl to Bulgaria?

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Bulgaria?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bulgaria (average of $535). Flying from Washington, D.C. Dulles Intl Airport to Bulgaria in June is currently the most expensive (average of $762). 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 Dulles Intl to Bulgaria

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Dulles Intl to Charles de Gaulle flights
Baltimore to Heathrow flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Istanbul flights
Dulles Intl to Lisbon flights
Dulles Intl to Madrid flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
Dulles Intl to Dublin flights
Dulles Intl to London City flights
Dulles Intl to Barcelona-El Prat flights
Baltimore to Gatwick flights
Dulles Intl to Athens flights
Reagan-National to Gatwick flights
Dulles Intl to Frankfurt flights
Dulles Intl to Orly flights
Dulles Intl to Stansted flights
Baltimore to Charles de Gaulle flights
Dulles Intl to Amsterdam flights
Reagan-National to Charles de Gaulle flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Zurich flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Reagan-National to Orly flights
Reagan-National to Istanbul flights
Dulles Intl to Bruxelles-National flights
Reagan-National to Madrid flights
Baltimore to Madrid flights
Dulles Intl to Keflavik Intl flights
Dulles Intl to Edinburgh flights
Dulles Intl to Vienna flights
Dulles Intl to Sabiha Gokcen flights
Reagan-National to Lisbon flights
Baltimore to Istanbul flights
Baltimore to Lisbon flights
Dulles Intl to Luton flights
Baltimore to Keflavik Intl flights
Reagan-National to Dublin flights
Dulles Intl to Munich flights
Baltimore to Barcelona-El Prat flights
Dulles Intl to Malpensa flights
Baltimore to Dublin flights
Reagan-National to Barcelona-El Prat flights
Reagan-National to Keflavik Intl flights
Dulles Intl to Linate flights
Reagan-National to Malpensa flights
Baltimore to Frankfurt flights
Dulles Intl to Vicenza flights
Reagan-National to Frankfurt flights

Top 5 airlines flying from Dulles Intl to Bulgaria

Discover the top 5 airlines that operate flights from Dulles Intl 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$562Average$871FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$679Average$850FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$691Average$946FlexibilityNo cancel feeOn-time76%
Austrian AirlinesCheapest$731Average$1,184FlexibilityNo cancel feeOn-time78%
ITA AirwaysCheapest$768Average$1,288FlexibilityNo cancel feeOn-time81%

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.