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Dulles Intl

$368+ Cheap flights from Sofia (SOF) to Dulles Intl (IAD)

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — IAD
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
1 adult, Economy
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Cheap flight deals from Sofia to Dulles Intl

Cheapest flights from Sofia to Dulles Intl
Explore the most affordable flight options available from Sofia to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 27, 2026.

This KLM deal was found by Cheapflights users on 1/26. 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.
lun. 4/207:00 am
SOF
-
IAD
1 stop15h 35m
Multiple Airlines
mar. 4/286:15 pm
IAD
-
SOF
1 stop12h 45m
Multiple Airlines
Deal found 1/26$462
This KLM deal was found by Cheapflights users on 1/26. 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.
lun. 2/27:00 am
SOF
-
IAD
1 stop16h 05m
Multiple Airlines
dom. 2/156:50 pm
IAD
-
SOF
1 stop12h 05m
Multiple Airlines
Deal found 1/26$464
This KLM deal was found by Cheapflights users on 1/26. 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.
mar. 4/217:00 am
SOF
-
IAD
2 stops18h 19m
Multiple Airlines
lun. 4/276:15 pm
IAD
-
SOF
1 stop12h 45m
Multiple Airlines
Deal found 1/26$467
This KLM deal was found by Cheapflights users on 1/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/37:00 am
SOF
-
IAD
1 stop16h 05m
Multiple Airlines
mar. 3/107:50 pm
IAD
-
SOF
1 stop12h 05m
Multiple Airlines
Deal found 1/27$468
This Air France deal was found by Cheapflights users on 1/26. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/47:00 am
SOF
-
IAD
1 stop16h 35m
Air France
jue. 4/236:15 pm
IAD
-
SOF
1 stop12h 45m
Air France
Deal found 1/26$470
This KLM deal was found by Cheapflights users on 1/26. 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.
mié. 2/47:00 am
SOF
-
IAD
2 stops18h 21m
Multiple Airlines
jue. 4/236:15 pm
IAD
-
SOF
1 stop12h 45m
Multiple Airlines
Deal found 1/26$474
This Air France deal was found by Cheapflights users on 1/26. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/47:00 am
SOF
-
IAD
1 stop16h 35m
Multiple Airlines
mié. 3/46:05 pm
IAD
-
SOF
1 stop13h 00m
Multiple Airlines
Deal found 1/26$476
This KLM deal was found by Cheapflights users on 1/26. 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.
jue. 5/147:00 am
SOF
-
IAD
1 stop15h 35m
Multiple Airlines
sáb. 5/309:45 pm
IAD
-
SOF
1 stop33h 15m
Multiple Airlines
Deal found 1/26$477
This KLM deal was found by Cheapflights users on 1/25. 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.
dom. 2/87:00 am
SOF
-
IAD
2 stops19h 09m
Multiple Airlines
mié. 2/1812:35 pm
IAD
-
SOF
2 stops18h 30m
Multiple Airlines
Deal found 1/25$479
This KLM deal was found by Cheapflights users on 1/26. 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.
mié. 2/47:00 am
SOF
-
IAD
2 stops18h 21m
KLM
mié. 3/46:05 pm
IAD
-
SOF
1 stop13h 00m
KLM
Deal found 1/26$480

Find flight deals from Sofia to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$462
(KLM)

One-way from

$368
(Booking.com)

Popular in

January

Cheapest in

May

Average price

$749
Provider with most accurate pricing for Sofia-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sofia-Washington, D.C. Dulles Intl flights.
Search Deals
From Sofia to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Sofia to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sofia to Dulles Intl 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 enero 27, 2026.
Use the filters below to find and compare flights from Sofia to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Sofia

Fly to

Dulles Intl

Route

Depart

Return

Price

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

lun. 4/20

7:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

mié. 4/29

6:15 pm-2:00 pm

1 stop12h 45m

$462

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

mar. 4/21

7:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

mié. 4/29

6:15 pm-2:00 pm

1 stop12h 45m

$462

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

mié. 4/22

7:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

mar. 4/28

6:15 pm-2:00 pm

1 stop12h 45m

$462

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

mar. 3/3

7:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

mar. 3/10

7:50 pm-1:55 pm

1 stop12h 05m

$464

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

mar. 4/21

7:00 am-6:19 pm

2 stops18h 19m

Washington, D.C. Dulles Intl

lun. 4/27

6:15 pm-2:00 pm

1 stop12h 45m

$467

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

mié. 4/22

7:00 am-8:52 pm

2 stops20h 52m

Washington, D.C. Dulles Intl

mié. 4/29

6:15 pm-2:00 pm

1 stop12h 45m

$467

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

jue. 4/9

7:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

mié. 4/15

6:15 pm-2:00 pm

1 stop12h 45m

$467

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

jue. 4/9

7:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

mié. 4/15

6:10 pm-2:00 pm

1 stop12h 50m

$468

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

lun. 2/16

6:20 pm-8:30 pm

1 stop33h 10m

$368

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

sáb. 2/14

10:40 am-8:30 pm

1 stop16h 50m

$368

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 14 results
1
2
  • Most accurate provider: When it comes to deals on Sofia-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sofia-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sofia-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sofia-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sofia-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sofia to Dulles Intl

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

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

Currently, October is the cheapest month in which you can book a flight from Sofia to Washington, D.C. Dulles Intl Airport (average of $492). Flying from Sofia to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of $677). 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 Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated enero 27, 2026.
Peruse reviews from past customers who have flown with KLM, Air France, and United Airlines from Sofia to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,443 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,443 reviews
KLM
7.7
Good
1,443 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Air France
7.4
Good
1,528 reviews
KLM
7.7
Good
1,443 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
United Airlines
7.4
Good
9,207 reviews
KLM
7.7
Good
1,443 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Turkish Airlines
7.3
Good
4,209 reviews
KLM
7.7
Good
1,443 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,749 reviews
KLM
7.7
Good
1,443 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

Related info for your journey

Find useful and relevant information for your journey from Sofia to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Sofia to Washington, D.C. Dulles Intl?

    Sofia (SOF), located 4.2 mi from the city center, is the airport you fly out of when you book flights from Sofia to Washington, D.C. Dulles Intl. 5 airlines have flights from Sofia to Washington, D.C. Dulles Intl on a regular basis. Booking flights from Sofia to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.

  • What are the cheapest airlines flying from Sofia to Washington, D.C. Dulles Intl Airport round-trip?

    Currently priced at $520, KLM will fly you from Sofia to Washington, D.C. Dulles Intl Airport and back. In addition to KLM, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air France and Lufthansa - these airlines can fly you to your destination from $564 and $585, respectively. These flights start at 22% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Sofia to Washington, D.C. Dulles Intl Airport (average of $492). Flying from Sofia to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of $677). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

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Alternative routes for Sofia to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Sofia to Baltimore flights

Top 5 airlines flying from Sofia to Dulles Intl

Discover the top 5 airlines that operate flights from Sofia to Dulles Intl. 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 enero 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$520Average$552FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$564Average$680FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$585Average$654FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$595Average$751FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$625Average$702FlexibilityNo cancel feeOn-time77%

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