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$261+ 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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SOF
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This FlightHub deal was found by Cheapflights users on 2/2. 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 8/510:20 pm
IAD
-
SOF
1 stop17h 50m
Lufthansa
Wed 8/196:10 am
SOF
-
IAD
1 stop20h 15m
Lufthansa
Deal found 2/2$509
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Mon 5/45:25 pm
IAD
-
SOF
1 stop23h 30m
Austrian Airlines
Mon 5/1812:25 pm
SOF
-
IAD
1 stop33h 10m
Austrian Airlines
Deal found 2/2$522
This FlightHub deal was found by Cheapflights users on 2/3. 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.
Tue 9/810:20 pm
IAD
-
SOF
1 stop13h 20m
Lufthansa
Tue 9/226:10 am
SOF
-
IAD
1 stop20h 15m
Lufthansa
Deal found 2/3$526
This FlightHub deal was found by Cheapflights users on 2/3. 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.
Tue 9/110:20 pm
IAD
-
SOF
1 stop13h 20m
Lufthansa
Tue 9/2212:55 pm
SOF
-
IAD
1 stop13h 30m
Lufthansa
Deal found 2/3$527
This Mytrip deal was found by Cheapflights users on 2/2. 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 8/59:45 am
IAD
-
SOF
2 stops20h 40m
Multiple Airlines
Wed 8/197:00 pm
SOF
-
IAD
1 stop25h 35m
Multiple Airlines
Deal found 2/2$528
This FlightHub deal was found by Cheapflights users on 2/3. 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.
Wed 9/210:20 pm
IAD
-
SOF
1 stop13h 20m
Multiple Airlines
Thu 9/1711:05 am
SOF
-
IAD
1 stop12h 40m
Multiple Airlines
Deal found 2/3$532
This Justfly.com deal was found by Cheapflights users on 2/2. 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 2/249:15 pm
IAD
-
SOF
1 stop34h 55m
Turkish Airlines
Tue 3/104:00 pm
SOF
-
IAD
1 stop26h 45m
Turkish Airlines
Deal found 2/2$535
This FlightHub deal was found by Cheapflights users on 2/2. 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 2/281:30 pm
IAD
-
SOF
1 stop18h 40m
Turkish Airlines
Tue 3/104:00 pm
SOF
-
IAD
1 stop34h 20m
Turkish Airlines
Deal found 2/2$537
This FlightHub deal was found by Cheapflights users on 2/3. 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 2/199:15 pm
IAD
-
SOF
1 stop34h 55m
Turkish Airlines
Tue 2/244:00 pm
SOF
-
IAD
1 stop34h 20m
Turkish Airlines
Deal found 2/3$541
This KAYAK deal was found by Cheapflights users on 2/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/63:25 pm
IAD
-
BOJ
2 stops13h 55m
Multiple Airlines
Wed 7/2212:35 pm
BOJ
-
IAD
1 stop13h 50m
Multiple Airlines
Deal found 2/1$762
This Austrian Airlines deal was found by Cheapflights users on 2/3. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/146:00 pm
IAD
-
VAR
1 stop14h 15m
Austrian Airlines
Wed 2/254:00 pm
VAR
-
IAD
1 stop29h 40m
Austrian Airlines
Deal found 2/3$783
This KAYAK deal was found by Cheapflights users on 2/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/63:25 pm
IAD
-
VAR
1 stop13h 05m
Lufthansa
Wed 7/229:30 pm
VAR
-
IAD
1 stop28h 55m
Lufthansa
Deal found 2/2$787

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$522
(Kiwi.com)

One-way from

$261
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$791
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. 2% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 3, 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

Dulles Intl

Fly to

Bulgaria

Route

Depart

Return

Price

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 3/1

1:30 pm-8:50 pm

1 stop24h 20m

Sofia

Fri 3/13

9:35 am-8:20 pm

1 stop16h 45m

$535

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Fri 3/6

1:30 pm-3:10 pm

1 stop18h 40m

Sofia

Fri 3/20

9:35 am-12:45 pm

1 stop33h 10m

$535

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Thu 2/26

1:30 pm-8:50 pm

1 stop24h 20m

Sofia

Thu 3/5

9:40 pm-11:45 am

1 stop21h 05m

$537

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 5/5

5:25 pm-12:10 pm

1 stop11h 45m

Sofia

Tue 5/19

6:10 am-8:37 pm

2 stops21h 27m

$552

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 3/1

12:35 pm-1:55 pm

2 stops18h 20m

Sofia

Fri 3/13

7:00 am-7:19 pm

2 stops18h 19m

$593

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Thu 3/5

9:15 pm-3:10 pm

1 stop34h 55m

Sofia

Mon 3/9

9:35 am-12:45 pm

1 stop33h 10m

$605

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Fri 5/8

10:20 pm-11:10 pm

1 stop17h 50m

Sofia

Fri 5/22

6:20 am-9:05 pm

2 stops21h 45m

$607

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sat 7/4

4:25 pm-11:00 am

2 stops35h 35m

Sofia

Wed 9/2

6:10 am-11:59 pm

2 stops24h 49m

$612

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 3/29

4:30 pm-12:10 pm

2 stops36h 40m

Sofia

Mon 4/6

7:00 pm-7:25 pm

2 stops31h 25m

$621

Washington, D.C.Burgas

IAD - BOJ

IADBOJ

Washington, D.C. Dulles Intl

Mon 7/6

3:25 pm-12:20 pm

2 stops13h 55m

Bourgas

Wed 7/22

12:35 pm-7:25 pm

1 stop13h 50m

$762

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 26 results
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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 $524). 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.

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 February 3, 2026.
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
7.5
Good
896 reviews

Crew

8.1

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Austrian Airlines
7.5
Good
896 reviews
Austrian Airlines
7.5
Good
896 reviews

Crew

8.1

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
United Airlines
7.4
Good
9,235 reviews
Austrian Airlines
7.5
Good
896 reviews

Crew

8.1

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Turkish Airlines
7.3
Good
4,210 reviews
Austrian Airlines
7.5
Good
896 reviews

Crew

8.1

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Lufthansa
6.8
Okay
7,759 reviews
Austrian Airlines
7.5
Good
896 reviews

Crew

8.1

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
ITA Airways
6.7
Okay
1,144 reviews
Austrian Airlines
7.5
Good
896 reviews

Crew

8.1

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful

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 Austrian Airlines fly from Washington, D.C. Dulles Intl Airport to Bulgaria in about 11h 45m. The time it takes to get you to your destination can typically vary by up to 12h 35m. 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 $524). 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

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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.
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Reagan-National to Leonardo da Vinci/Fiumicino flights
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Baltimore to Madrid flights
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Baltimore to Keflavik Intl flights
Baltimore to Lisbon flights
Reagan-National to Istanbul flights
Baltimore to Athens flights
Reagan-National to Lisbon flights
Reagan-National to Athens flights
Dulles Intl to Munich flights
Baltimore to Istanbul flights
Baltimore to Barcelona-El Prat flights
Dulles Intl to Copenhagen flights
Reagan-National to Dublin flights
Baltimore to Dublin flights
Dulles Intl to Malpensa flights
Reagan-National to Barcelona-El Prat flights
Dulles Intl to Vicenza flights
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Reagan-National to Keflavik Intl 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$530Average$830FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$660Average$858FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$666Average$894FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$866Average$1,131FlexibilityNo cancel feeOn-time78%
ITA AirwaysCheapest$1,062Average$1,288FlexibilityNo cancel feeOn-time81%

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