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$362+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SOF
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
1 adult, Economy
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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 August 2, 2026.

This FlightHub deal was found by Cheapflights users on 7/27. 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.
Fri 10/161:15 pm
IAD
-
SOF
1 stop12h 30m
Turkish Airlines
Sat 10/249:35 am
SOF
-
IAD
1 stop17h 10m
Turkish Airlines
Deal found 7/27$639
This Turkish Airlines deal was found by Cheapflights users on 7/27. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:40 pm
IAD
-
SOF
1 stop34h 20m
Turkish Airlines
Wed 9/303:50 pm
SOF
-
IAD
1 stop34h 55m
Turkish Airlines
Deal found 7/27$649
This Mytrip deal was found by Cheapflights users on 7/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:35 pm
IAD
-
SOF
2 stops19h 50m
Multiple Airlines
Wed 10/215:15 pm
SOF
-
IAD
2 stops34h 20m
Multiple Airlines
Deal found 7/27$656
This Mytrip deal was found by Cheapflights users on 7/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:35 pm
IAD
-
SOF
2 stops19h 50m
Multiple Airlines
Wed 10/710:40 am
SOF
-
IAD
2 stops35h 30m
Multiple Airlines
Deal found 7/31$661
This Justfly.com deal was found by Cheapflights users on 7/28. 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 9/81:15 pm
IAD
-
SOF
1 stop18h 45m
Turkish Airlines
Tue 9/223:50 pm
SOF
-
IAD
1 stop26h 40m
Turkish Airlines
Deal found 7/28$689
This FlightHub deal was found by Cheapflights users on 7/30. 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 8/199:40 pm
IAD
-
VAR
1 stop16h 45m
Turkish Airlines
Thu 10/810:15 pm
VAR
-
IAD
1 stop20h 15m
Turkish Airlines
Deal found 7/30$696
This Mytrip deal was found by Cheapflights users on 7/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:45 pm
IAD
-
SOF
3 stops26h 15m
Multiple Airlines
Tue 10/205:15 pm
SOF
-
IAD
2 stops28h 55m
Multiple Airlines
Deal found 7/31$697
This Turkish Airlines deal was found by Cheapflights users on 7/30. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:15 pm
IAD
-
VAR
1 stop25h 10m
Turkish Airlines
Wed 10/149:20 am
VAR
-
IAD
1 stop17h 25m
Turkish Airlines
Deal found 7/30$700
This Turkish Airlines deal was found by Cheapflights users on 7/27. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:15 pm
IAD
-
SOF
1 stop24h 05m
Turkish Airlines
Fri 9/189:10 pm
SOF
-
IAD
1 stop21h 20m
Turkish Airlines
Deal found 7/27$704
This Expedia deal was found by Cheapflights users on 7/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:55 pm
IAD
-
SOF
1 stop12h 25m
Lufthansa
Wed 11/116:25 am
SOF
-
IAD
1 stop16h 30m
Lufthansa
Deal found 7/29$713
This Expedia deal was found by Cheapflights users on 8/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:55 pm
IAD
-
SOF
1 stop17h 00m
Lufthansa
Wed 11/46:25 am
SOF
-
IAD
1 stop16h 30m
Lufthansa
Deal found 8/1$714
This Expedia deal was found by Cheapflights users on 7/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3010:55 pm
IAD
-
SOF
1 stop12h 25m
Multiple Airlines
Mon 12/143:00 pm
SOF
-
IAD
1 stop33h 00m
Multiple Airlines
Deal found 7/29$716

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 August 2, 2026.

Round-trip from

$639
(FlightHub)

One-way from

$362
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$796
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. 2% potential increase in price ($20 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 August 2026
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 August 2, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 9/16

9:40 pm-3:00 pm

1 stop34h 20m

Sofia

Wed 9/30

3:50 pm-7:45 pm

1 stop34h 55m

$649

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 1/27

9:20 pm-8:50 am

1 stop28h 30m

Sofia

Wed 2/10

4:00 pm-11:45 am

1 stop26h 45m

$649

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 10/7

1:15 pm-3:00 pm

1 stop18h 45m

Sofia

Wed 10/21

9:10 pm-7:45 pm

1 stop29h 35m

$699

Washington, D.C.Varna

IAD - VAR

IADVAR

Washington, D.C. Dulles Intl

Wed 8/19

9:40 pm-9:25 pm

1 stop16h 45m

Varna

Wed 10/14

9:20 am-11:30 am

1 stop33h 10m

$700

Washington, D.C.Varna

IAD - VAR

IADVAR

Washington, D.C. Dulles Intl

Wed 10/14

9:40 pm-8:30 am

1 stop27h 50m

Varna

Wed 11/18

10:05 am-7:25 pm

1 stop16h 20m

$700

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 9/9

9:40 pm-8:45 am

1 stop28h 05m

Sofia

Thu 9/17

9:10 pm-11:30 am

1 stop21h 20m

$729

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 12/6

10:55 pm-6:20 pm

1 stop12h 25m

Sofia

Thu 12/10

6:25 am-8:05 pm

1 stop20h 40m

$735

Washington, D.C.Varna

IAD - VAR

IADVAR

Washington, D.C. Dulles Intl

Mon 9/7

9:40 pm-8:30 am

1 stop27h 50m

Varna

Wed 9/16

10:15 pm-11:30 am

1 stop20h 15m

$740

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 11/1

10:55 pm-6:20 pm

1 stop12h 25m

Sofia

Wed 11/18

2:10 pm-12:30 am

2 stops17h 20m

$746

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Mon 12/28

5:15 pm-6:20 pm

2 stops18h 05m

Sofia

Mon 1/11

3:00 pm-5:00 pm

1 stop33h 00m

$748

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 42 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bulgaria (average of $536). Flying from Washington, D.C. Dulles Intl Airport to Bulgaria in December is currently the most expensive (average of $1,167). 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.

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Bulgaria?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Bulgaria may vary depending on when you book. For the best chance of a lower fare, look to book 13 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 August 2, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Bulgaria, such as Austrian Airlines,Turkish Airlines, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
950 reviews

Entertainment

6.8

Overall

7.6

Crew

8.1

Boarding

7.6

Food

6.8

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Austrian Airlines
7.6
Good
950 reviews
Austrian Airlines
7.6
Good
950 reviews

Entertainment

6.8

Overall

7.6

Crew

8.1

Boarding

7.6

Food

6.8

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Turkish Airlines
7.4
Good
4,460 reviews
Austrian Airlines
7.6
Good
950 reviews

Entertainment

6.8

Overall

7.6

Crew

8.1

Boarding

7.6

Food

6.8

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
United Airlines
7.4
Good
10,062 reviews
Austrian Airlines
7.6
Good
950 reviews

Entertainment

6.8

Overall

7.6

Crew

8.1

Boarding

7.6

Food

6.8

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Lufthansa
6.8
Okay
8,176 reviews
Austrian Airlines
7.6
Good
950 reviews

Entertainment

6.8

Overall

7.6

Crew

8.1

Boarding

7.6

Food

6.8

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice 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, United Airlines, and Lufthansa fly from Washington, D.C. Dulles Intl Airport to Bulgaria in about 12h 25m. The time it takes to get you to your destination can typically vary by up to 21h 55m. Washington, D.C. Dulles Intl Airport and Bulgaria are separated by a distance of 4931 mi. This flight may include one or multiple stops.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bulgaria (average of $536). Flying from Washington, D.C. Dulles Intl Airport to Bulgaria in December is currently the most expensive (average of $1,167). 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 Dulles Intl to Bulgaria

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

Top 4 airlines flying from Dulles Intl to Bulgaria

Discover the top 4 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 August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$522Average$746FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$637Average$1,035FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$660Average$998FlexibilityNo cancel feeOn-time76%
Austrian AirlinesCheapest$809Average$1,265FlexibilityNo cancel feeOn-time78%

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