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Dulles Intl

$511+ 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 6/19. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — IAD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$559
(British Airways)

One-way from

$511
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$744
From Sofia to Washington, D.C. Dulles Intl
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One-way flight from Sofia to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 3% potential increase in price ($21 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 June 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 June 12, 2025.

This British Airways deal was found by Cheapflights users on 6/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/238:00 pmSOF - IAD
2 stops28h 11mBritish Airways
Sun 7/610:40 pmIAD - SOF
1 stop13h 30mBritish Airways
Deal found 6/11$559
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Mon 6/233:30 pmSOF - IAD
1 stop31h 45mSWISS
Tue 7/88:45 pmIAD - SOF
1 stop30h 20mSWISS
Deal found 6/11$597
This Booking.com deal was found by Cheapflights users on 6/11. 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 6/233:30 pmSOF - IAD
1 stop31h 45mMultiple Airlines
Sun 7/610:20 pmIAD - SOF
1 stop17h 40mMultiple Airlines
Deal found 6/11$609
This FlightHub deal was found by Cheapflights users on 6/10. 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 7/93:35 pmSOF - IAD
1 stop27h 10mTurkish Airlines
Sat 7/191:30 pmIAD - SOF
1 stop18h 15mTurkish Airlines
Deal found 6/10$616
This Lufthansa deal was found by Cheapflights users on 6/11. 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 7/166:00 amSOF - IAD
1 stop20h 25mLufthansa
Tue 8/123:25 pmIAD - SOF
1 stop12h 50mLufthansa
Deal found 6/11$618
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/226:20 amSOF - IAD
2 stops16h 59mUnited Airlines
Sat 8/910:20 pmIAD - SOF
1 stop17h 40mUnited Airlines
Deal found 6/11$619
This Air France deal was found by Cheapflights users on 6/11. 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 7/177:00 amSOF - IAD
1 stop16h 20mAir France
Sat 8/236:30 pmIAD - SOF
1 stop12h 30mAir France
Deal found 6/11$620
This Trip.com deal was found by Cheapflights users on 6/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/136:00 pmSOF - IAD
1 stop27h 40mITA Airways
Sat 7/264:30 pmIAD - SOF
1 stop17h 40mITA Airways
Deal found 6/10$628
This Austrian Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 7/168:00 amSOF - IAD
2 stops37h 40mAustrian Airlines
Sun 8/245:25 pmIAD - SOF
1 stop11h 15mAustrian Airlines
Deal found 6/11$654
This Air Canada deal was found by Cheapflights users on 6/12. 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 7/216:15 amSOF - IAD
2 stops38h 27mAir Canada
Tue 8/123:40 pmIAD - SOF
2 stops36h 35mAir Canada
Deal found 6/12$674

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 June 12, 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

Mon 6/23

8:00 pm-5:11 pm

2 stops28h 11m

Washington, D.C. Dulles Intl

Sun 7/6

10:40 pm-7:10 pm

1 stop13h 30m

$559

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Mon 6/23

3:30 pm-4:15 pm

1 stop31h 45m

Washington, D.C. Dulles Intl

Tue 7/8

8:45 pm-10:05 am

1 stop30h 20m

$597

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Mon 6/23

3:30 pm-4:15 pm

1 stop31h 45m

Washington, D.C. Dulles Intl

Sun 7/6

10:20 pm-11:00 pm

1 stop17h 40m

$609

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Wed 7/9

3:35 pm-11:45 am

1 stop27h 10m

Washington, D.C. Dulles Intl

Sat 7/19

1:30 pm-2:45 pm

1 stop18h 15m

$616

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Wed 7/16

6:00 am-7:25 pm

1 stop20h 25m

Washington, D.C. Dulles Intl

Tue 8/12

3:25 pm-11:15 am

1 stop12h 50m

$618

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Tue 7/22

6:20 am-4:19 pm

2 stops16h 59m

Washington, D.C. Dulles Intl

Sat 8/9

10:20 pm-11:00 pm

1 stop17h 40m

$619

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Thu 7/17

7:00 am-4:20 pm

1 stop16h 20m

Washington, D.C. Dulles Intl

Sat 8/23

6:30 pm-2:00 pm

1 stop12h 30m

$620

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Sun 7/13

6:00 pm-2:40 pm

1 stop27h 40m

Washington, D.C. Dulles Intl

Sat 7/26

4:30 pm-5:10 pm

1 stop17h 40m

$628

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Wed 7/16

8:00 am-2:40 pm

2 stops37h 40m

Washington, D.C. Dulles Intl

Mon 8/4

5:25 pm-6:10 pm

1 stop17h 45m

$654

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Mon 7/21

6:15 am-1:42 pm

2 stops38h 27m

Washington, D.C. Dulles Intl

Tue 8/12

3:40 pm-11:15 am

2 stops36h 35m

$674

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 20 results
1
2

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, 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 July is currently the most expensive (average of $349). 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 June 12, 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 June 12, 2025.
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Austrian Airlines
7.6
Good
802 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Air France
7.5
Good
1,463 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
SWISS
7.5
Good
1,623 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Qatar Airways
7.4
Good
3,584 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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 $559, British Airways will fly you from Sofia to Washington, D.C. Dulles Intl Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from SWISS and Turkish Airlines - these airlines can fly you to your destination from $597 and $616, respectively. These flights start at 18% 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 Lufthansa ($557), Qatar Airways ($573), and KLM ($584).

  • 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 July is currently the most expensive (average of $349). 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 Sofia to Dulles Intl

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$520Average$658FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$572Average$721FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$584Average$652FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$614Average$655FlexibilityNo cancel feeOn-time77%

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