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Dulles Intl

$571+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — IAD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Sofia to Washington, D.C. Dulles Intl are usually found in November or January, booked 62 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$571
(United Airlines)

Popular in

December

Cheapest in

November

Average price

$605
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. 3% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This United Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 5/136:20 amSOF - IAD
2 stops21h 48mUnited Airlines
Fri 8/2910:20 pmIAD - SOF
1 stop13h 20mUnited Airlines
Deal found 2/20$571
This Air France deal was found by Cheapflights users on 2/20. 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.
Thu 2/277:10 amSOF - IAD
1 stop16h 25mAir France
Tue 3/117:30 pmIAD - SOF
1 stop12h 25mAir France
Deal found 2/20$597
This Travelocity deal was found by Cheapflights users on 2/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/297:25 pmSOF - IAD
1 stop31h 00mLufthansa
Fri 9/1210:20 pmIAD - SOF
1 stop13h 20mLufthansa
Deal found 2/19$605
This Air Canada deal was found by Cheapflights users on 2/20. 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.
Mon 5/126:15 amSOF - IAD
2 stops37h 59mAir Canada
Sun 8/319:55 amIAD - SOF
2 stops20h 10mAir Canada
Deal found 2/20$606
This KLM deal was found by Cheapflights users on 2/20. 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.
Thu 8/287:00 amSOF - IAD
1 stop15h 35mKLM
Thu 9/115:25 pmIAD - SOF
1 stop13h 35mKLM
Deal found 2/20$610
This Expedia deal was found by Cheapflights users on 2/20. 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.
Thu 8/286:55 pmSOF - IAD
2 stops27h 30mMultiple Airlines
Thu 9/118:45 pmIAD - SOF
1 stop30h 20mMultiple Airlines
Deal found 2/20$616
This Austrian Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 5/136:55 pmSOF - IAD
1 stop26h 40mAustrian Airlines
Sat 8/306:35 pmIAD - SOF
2 stops16h 35mAustrian Airlines
Deal found 2/20$619
This SWISS deal was found by Cheapflights users on 2/20. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1312:45 pmSOF - IAD
2 stops34h 30mSWISS
Fri 8/298:45 pmIAD - SOF
2 stops32h 15mSWISS
Deal found 2/20$700
This deal was found by Cheapflights users on 2/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/279:45 amSOF - IAD
1 stop16h 45mTurkish Airlines
Fri 3/79:25 pmIAD - SOF
1 stop16h 25mTurkish Airlines
Deal found 2/20$1,016

Find flights from Sofia to Dulles Intl within your budget

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 February 20, 2025.

Fly from

Sofia

Fly to

Dulles Intl

Route

Depart

Return

Price

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Tue 5/13

6:20 am-9:08 pm

2 stops21h 48m

Washington, D.C. Dulles Intl

Fri 8/29

10:20 pm-6:40 pm

1 stop13h 20m

$571

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Mon 5/12

6:15 am-1:14 pm

2 stops37h 59m

Washington, D.C. Dulles Intl

Sun 8/31

9:55 am-1:05 pm

2 stops20h 10m

$606

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Tue 5/13

6:55 pm-2:35 pm

1 stop26h 40m

Washington, D.C. Dulles Intl

Sat 8/30

6:35 pm-6:10 pm

2 stops16h 35m

$619

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Tue 5/13

6:20 am-9:08 pm

2 stops21h 48m

Washington, D.C. Dulles Intl

Fri 8/29

6:10 pm-6:40 pm

2 stops17h 30m

$627

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Tue 5/13

12:45 pm-4:15 pm

2 stops34h 30m

Washington, D.C. Dulles Intl

Fri 8/29

8:45 pm-12:00 pm

2 stops32h 15m

$700

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Tue 5/13

10:05 am-7:20 pm

2 stops16h 15m

Washington, D.C. Dulles Intl

Sat 8/30

6:30 pm-3:35 pm

2 stops14h 05m

$768

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Thu 3/27

1:45 pm-9:05 pm

1 stop13h 20m

Washington, D.C. Dulles Intl

Fri 4/11

10:05 pm-10:50 pm

2 stops41h 45m

$769

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Mon 5/12

7:00 am-4:29 pm

2 stops16h 29m

Washington, D.C. Dulles Intl

Fri 8/29

5:25 pm-2:00 pm

1 stop13h 35m

$773

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

  • 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.

Travel insights for flights from Sofia to Dulles Intl

Get recent, data-driven insights about flights from Sofia to Dulles Intl including ideal travel times, pricing trends, and more.

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 February 14, 2025.

Booking 62 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 $389). 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 February 20, 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 February 20, 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

Entertainment

7.2

Boarding

7.8

Overall

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews

Entertainment

7.2

Boarding

7.8

Overall

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Austrian Airlines
7.6
Good
773 reviews
KLM
7.8
Good
1,333 reviews

Entertainment

7.2

Boarding

7.8

Overall

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

SWISS
7.5
Good
1,568 reviews
KLM
7.8
Good
1,333 reviews

Entertainment

7.2

Boarding

7.8

Overall

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Air France
7.4
Good
1,449 reviews
KLM
7.8
Good
1,333 reviews

Entertainment

7.2

Boarding

7.8

Overall

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

United Airlines
7.4
Good
8,765 reviews
KLM
7.8
Good
1,333 reviews

Entertainment

7.2

Boarding

7.8

Overall

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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. 4 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 $571, United Airlines will fly you from Sofia to Washington, D.C. Dulles Intl Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Austrian Airlines - these airlines can fly you to your destination from $606 and $619, respectively. These flights start at 17% 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, 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 $389). 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 Sofia?

Book flights to Sofia if you plan to visit one of these locations
Arlington
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Fairfax
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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.
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Top 4 airlines flying from Sofia to Dulles Intl

Discover the top 4 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$498Average$620FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$572Average$620FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$572Average$807FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$619Average$648FlexibilityNo cancel feeOn-time77%
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