HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bulgaria

$321+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SOF
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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

Keep the following information in mind while searching for Dulles Intl to Bulgaria flight deals. Data was last updated April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$678
(FlightHub)

One-way from

$321
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$874
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. 20% potential increase in price ($220 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find 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 April 17, 2025.

This Turkish Airlines deal was found by Cheapflights users on 4/17. 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.
Sat 11/110:25 pmIAD - SOF
1 stop16h 25mTurkish Airlines
Mon 11/33:55 pmSOF - IAD
1 stop34h 35mTurkish Airlines
Deal found 4/17$672
This Gurufare deal was found by Cheapflights users on 4/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/58:45 pmIAD - SOF
2 stops14h 55mMultiple Airlines
Wed 8/206:00 amSOF - IAD
1 stop20h 25mMultiple Airlines
Deal found 4/17$683
This United Airlines deal was found by Cheapflights users on 4/17. 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 10/3011:20 pmIAD - SOF
1 stop17h 25mUnited Airlines
Tue 11/46:00 amSOF - IAD
2 stops16h 13mUnited Airlines
Deal found 4/17$688
This Air Canada deal was found by Cheapflights users on 4/17. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/313:55 pmIAD - SOF
2 stops20h 15mAir Canada
Thu 11/66:00 amSOF - IAD
2 stops16h 51mAir Canada
Deal found 4/17$695
This Lufthansa deal was found by Cheapflights users on 4/17. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/55:10 pmIAD - SOF
2 stops18h 00mLufthansa
Sun 11/91:45 pmSOF - IAD
1 stop13h 20mLufthansa
Deal found 4/17$704
This Austrian Airlines deal was found by Cheapflights users on 4/17. 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.
Sun 11/26:00 pmIAD - SOF
1 stop10h 50mAustrian Airlines
Sun 11/96:45 pmSOF - IAD
2 stops52h 16mAustrian Airlines
Deal found 4/17$721
This Orbitz deal was found by Cheapflights users on 4/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/810:40 pmIAD - SOF
1 stop13h 30mBritish Airways
Sun 6/229:10 pmSOF - IAD
1 stop27h 25mBritish Airways
Deal found 4/16$732
This Expedia deal was found by Cheapflights users on 4/17. 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 9/85:25 pmIAD - VAR
1 stop14h 50mMultiple Airlines
Thu 9/189:20 amVAR - IAD
2 stops35h 11mMultiple Airlines
Deal found 4/17$737
This Gurufare deal was found by Cheapflights users on 4/16. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/148:45 pmIAD - SOF
1 stop30h 20mSWISS
Thu 7/2410:50 amSOF - IAD
1 stop12h 25mSWISS
Deal found 4/16$746
This KLM deal was found by Cheapflights users on 4/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/812:30 pmIAD - SOF
2 stops18h 30mKLM
Sun 10/197:00 amSOF - IAD
1 stop15h 35mKLM
Deal found 4/17$802
This ITA Airways deal was found by Cheapflights users on 4/17. 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/214:30 pmIAD - SOF
1 stop12h 35mITA Airways
Wed 9/2412:55 pmSOF - IAD
2 stops29h 55mITA Airways
Deal found 4/17$835
This KAYAK deal was found by Cheapflights users on 4/17. 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.
Fri 9/266:10 pmIAD - VAR
2 stops14h 05mLufthansa
Tue 9/309:15 amVAR - IAD
1 stop13h 35mLufthansa
Deal found 4/17$924

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 April 17, 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

Sun 9/14

9:40 pm-2:45 pm

1 stop34h 05m

Sofia

Sun 9/28

9:25 am-11:45 am

1 stop33h 20m

$678

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 8/5

8:45 pm-6:40 pm

2 stops14h 55m

Sofia

Wed 8/20

6:00 am-7:25 pm

1 stop20h 25m

$683

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 10/8

10:25 am-11:15 am

2 stops17h 50m

Sofia

Sun 10/19

1:55 pm-9:39 am

2 stops26h 44m

$700

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 10/7

5:40 pm-12:00 pm

1 stop11h 20m

Sofia

Tue 10/21

6:20 am-9:01 pm

2 stops21h 41m

$723

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 10/8

10:20 pm-6:40 pm

1 stop13h 20m

Sofia

Sun 10/19

6:00 am-1:30 pm

2 stops14h 30m

$728

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 6/8

10:40 pm-7:10 pm

1 stop13h 30m

Sofia

Sun 6/22

9:10 pm-5:35 pm

1 stop27h 25m

$732

Washington, D.C.Varna

IAD - VAR

IADVAR

Washington, D.C. Dulles Intl

Mon 9/8

5:25 pm-3:15 pm

1 stop14h 50m

Varna

Thu 9/18

9:20 am-1:31 pm

2 stops35h 11m

$737

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Mon 7/14

8:45 pm-10:05 am

1 stop30h 20m

Sofia

Thu 7/24

10:50 am-4:15 pm

1 stop12h 25m

$746

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 10/8

12:30 pm-2:00 pm

2 stops18h 30m

Sofia

Sun 10/19

7:00 am-3:35 pm

1 stop15h 35m

$802

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 9/21

4:30 pm-12:05 pm

1 stop12h 35m

Sofia

Wed 9/24

12:55 pm-11:50 am

2 stops29h 55m

$835

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 26 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bulgaria (average of $632). Flying from Washington, D.C. Dulles Intl Airport to Bulgaria in June is currently the most expensive (average of $1,243). 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 April 17, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Bulgaria, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Bulgaria by month

Plan your trip to Bulgaria by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bulgaria ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Bulgaria when rainfall is around 1.2 in.

Temperature in Bulgaria by month

Plan your trip to Bulgaria by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bulgaria, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 April 17, 2025.
To help decide which airline to fly from Washington, D.C. to Bulgaria, see what other customers have to say about KLM, Austrian Airlines and SWISS. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,329 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,329 reviews
KLM
7.8
Good
1,329 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Austrian Airlines
7.6
Good
775 reviews
KLM
7.8
Good
1,329 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
SWISS
7.5
Good
1,580 reviews
KLM
7.8
Good
1,329 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,667 reviews
KLM
7.8
Good
1,329 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Turkish Airlines
7.3
Good
3,769 reviews
KLM
7.8
Good
1,329 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Bulgaria one-way?

    One-way options have recently been found by users for as low as $443 on Turkish Airlines. Other airlines that offer cheap prices include Austrian Airlines from $511 and SWISS from $523 one-way.

  • 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bulgaria (average of $632). Flying from Washington, D.C. Dulles Intl Airport to Bulgaria in June is currently the most expensive (average of $1,243). 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
Baltimore to Heathrow flights
Dulles Intl to Charles de Gaulle flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Athens flights
Reagan-National to Heathrow flights
Dulles Intl to Madrid flights
Dulles Intl to Lisbon flights
Dulles Intl to Istanbul flights
Dulles Intl to Dublin flights
Dulles Intl to Gatwick flights
Dulles Intl to London City flights
Dulles Intl to Barcelona-El Prat flights
Reagan-National to Gatwick flights
Baltimore to Gatwick flights
Dulles Intl to Orly flights
Dulles Intl to Frankfurt flights
Reagan-National to Charles de Gaulle flights
Baltimore to Charles de Gaulle flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Baltimore to Stansted flights
Dulles Intl to Bruxelles-National flights
Dulles Intl to Amsterdam flights
Reagan-National to Athens flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Reagan-National to Orly flights
Baltimore to Athens flights
Reagan-National to Madrid flights
Reagan-National to Lisbon flights
Dulles Intl to Keflavik Intl flights
Baltimore to Madrid flights
Baltimore to Lisbon flights
Dulles Intl to Edinburgh flights
Dulles Intl to Zurich flights
Reagan-National to Istanbul flights
Dulles Intl to Vicenza flights
Dulles Intl to Munich flights
Baltimore to Dublin flights
Dulles Intl to Copenhagen flights
Reagan-National to Dublin flights
Dulles Intl to Malpensa flights
Baltimore to Istanbul flights
Baltimore to Keflavik Intl flights
Dulles Intl to Linate flights
Reagan-National to Barcelona-El Prat flights
Dulles Intl to Stansted flights
Baltimore to Frankfurt flights
Baltimore to Barcelona-El Prat flights
Reagan-National to Malpensa flights
Dulles Intl to Sabiha Gokcen flights

Top 7 airlines flying from Dulles Intl to Bulgaria

Discover the top 7 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$552Average$1,144FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$588Average$903FlexibilityNo cancel feeOn-time78%
ITA AirwaysCheapest$597Average$1,101FlexibilityNo cancel feeOn-time81%
SWISSCheapest$635Average$1,109FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$642Average$981FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$709Average$1,120FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$766Average$1,066FlexibilityNo cancel feeOn-time76%

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.