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Dulles Intl

$570+ Cheap flights from Sofia (SOF) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — IAD
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Sofia to Washington, D.C. Dulles Intl are usually found in November or February, booked 44 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap 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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$570
(Air France)

Popular in

December

Cheapest in

November

Average price

$641
Provider with most accurate pricing for Sofia-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Sofia-Washington, D.C. Dulles Intl flights.
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From Sofia to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 April 29, 2025.

This Air France deal was found by Cheapflights users on 4/28. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/97:00 amSOF - IAD
1 stop16h 20mAir France
Thu 7/176:30 pmIAD - SOF
1 stop12h 30mAir France
Deal found 4/28$570
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1210:50 amSOF - IAD
1 stop12h 25mSWISS
Thu 6/198:45 pmIAD - SOF
1 stop30h 20mSWISS
Deal found 4/28$586
This Booking.com deal was found by Cheapflights users on 4/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/43:30 pmSOF - IAD
1 stop31h 45mMultiple Airlines
Thu 3/126:40 pmIAD - SOF
1 stop17h 30mMultiple Airlines
Deal found 4/28$611
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/146:15 amSOF - IAD
2 stops17h 04mUnited Airlines
Wed 5/2110:25 amIAD - SOF
2 stops29h 35mUnited Airlines
Deal found 4/28$640
This Lufthansa deal was found by Cheapflights users on 4/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/141:50 pmSOF - IAD
1 stop13h 15mLufthansa
Sun 7/2710:20 pmIAD - SOF
1 stop17h 40mLufthansa
Deal found 4/28$641
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:15 amSOF - IAD
2 stops21h 53mAir Canada
Thu 7/1710:25 amIAD - SOF
2 stops17h 50mAir Canada
Deal found 4/28$727
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/146:55 pmSOF - IAD
2 stops27h 40mAustrian Airlines
Sun 7/275:45 pmIAD - SOF
2 stops17h 25mAustrian Airlines
Deal found 4/28$733
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/143:35 pmSOF - IAD
1 stop27h 10mTurkish Airlines
Wed 5/219:40 pmIAD - SOF
1 stop34h 05mTurkish Airlines
Deal found 4/28$768

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 April 29, 2025.
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

Fri 5/9

7:00 am-4:20 pm

1 stop16h 20m

Washington, D.C. Dulles Intl

Thu 7/17

6:30 pm-2:00 pm

1 stop12h 30m

$570

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Thu 6/12

10:50 am-4:15 pm

1 stop12h 25m

Washington, D.C. Dulles Intl

Thu 6/19

8:45 pm-10:05 am

1 stop30h 20m

$586

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Mon 8/4

3:30 pm-4:15 pm

1 stop31h 45m

Washington, D.C. Dulles Intl

Thu 3/12

6:40 pm-6:10 pm

1 stop17h 30m

$611

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Wed 5/14

6:15 am-4:19 pm

2 stops17h 04m

Washington, D.C. Dulles Intl

Wed 5/21

10:25 am-11:00 pm

2 stops29h 35m

$640

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Mon 7/14

1:50 pm-8:05 pm

1 stop13h 15m

Washington, D.C. Dulles Intl

Sun 7/27

10:20 pm-11:00 pm

1 stop17h 40m

$641

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Fri 5/9

6:15 am-9:08 pm

2 stops21h 53m

Washington, D.C. Dulles Intl

Thu 7/17

10:25 am-11:15 am

2 stops17h 50m

$727

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Mon 7/14

6:55 pm-3:35 pm

2 stops27h 40m

Washington, D.C. Dulles Intl

Sun 7/27

5:45 pm-6:10 pm

2 stops17h 25m

$733

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Wed 5/14

3:35 pm-11:45 am

1 stop27h 10m

Washington, D.C. Dulles Intl

Wed 5/21

9:40 pm-2:45 pm

1 stop34h 05m

$768

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Sat 5/3

1:30 pm-8:40 am

1 stop26h 10m

$571

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Thu 7/10

7:00 am-3:35 pm

1 stop15h 35m

$646

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 12 results
1
2

Compare providers for flights from Sofia to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sofia to Dulles Intl in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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 eDreams the most. eDreams 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

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

Use this chart to determine the optimal time to book a round-trip flight from Sofia to Dulles Intl. Price data was last updated on April 25, 2025.

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sofia to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Sofia to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Sofia to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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 SOF to IAD?

Find hourly flight availability from Sofia to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

It’s typically best to fly out from Sofia to Washington, D.C. Dulles Intl Airport in the evening. Doing so could potentially save you 17% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in Dulles Intl by month

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

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

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

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 April 29, 2025.
Read reviews from past customers who have flown KLM, Austrian Airlines and SWISS from Sofia to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,333 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.2

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
1,333 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.2

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
780 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.2

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
1,587 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.2

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.
Qatar Airways
7.4
Good
3,561 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.2

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.
Air France
7.4
Good
1,444 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.2

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 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. 3 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 $570, Air France will fly you from Sofia to Washington, D.C. Dulles Intl Airport and back. In addition to Air France, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from SWISS and United Airlines - these airlines can fly you to your destination from $586 and $640, respectively. These flights start at 17% lower than the current average price 3 months from now.

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

    The cheapest airlines for a one-way flight from Sofia to Washington, D.C. Dulles Intl Airport are Qatar Airways ($571), KLM ($646), and Lufthansa ($672).

  • 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, August is the cheapest month in which you can book a flight from Sofia to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Sofia to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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.

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Alternative routes for Sofia to Dulles Intl

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Top 3 airlines flying from Sofia to Dulles Intl

Discover the top 3 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$572Average$806FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$584Average$659FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$614Average$665FlexibilityNo cancel feeOn-time77%

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