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$588+ Cheap flights from Dulles Intl (IAD) to Sofia (SOF)

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SOF
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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The best prices from Washington, D.C. Dulles Intl to Sofia are usually found in January or November, booked 88 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Dulles Intl to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Sofia (SOF). 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 21, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$588
(oojo)

Popular in

June

Cheapest in

January

Average price

$645
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Sofia flights.
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From Washington, D.C. Dulles Intl to Sofia
Search Deals
High demand for flights, 22% potential price rise
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Best time to find cheap flights, 4% potential price drop
Search Deals
Average for round-trip flights in January 2025
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Find flight deals from Dulles Intl to Sofia

Cheapest flights from Dulles Intl to Sofia
Explore the most affordable flight options available from Dulles Intl to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2025.

This oojo deal was found by Cheapflights users on 1/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/910:25 pmIAD - SOF
1 stop16h 25mTurkish Airlines
mar. 3/259:40 pmSOF - IAD
1 stop28h 50mTurkish Airlines
Deal found 1/20$588
This Gotogate deal was found by Cheapflights users on 1/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/173:55 pmIAD - SOF
2 stops15h 40mAir Canada
mié. 4/26:15 amSOF - IAD
2 stops35h 59mAir Canada
Deal found 1/20$590
This Gotogate deal was found by Cheapflights users on 1/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/177:00 pmIAD - SOF
1 stop16h 10mBritish Airways
mié. 4/29:30 pmSOF - IAD
1 stop25h 20mBritish Airways
Deal found 1/20$592
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/117:00 pmIAD - SOF
1 stop13h 10mAmerican Airlines
mar. 3/256:05 pmSOF - IAD
1 stop28h 30mAmerican Airlines
Deal found 1/20$598
This United deal was found by Cheapflights users on 1/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/911:20 pmIAD - SOF
1 stop12h 50mMultiple Airlines
mar. 3/256:00 amSOF - IAD
2 stops35h 31mMultiple Airlines
Deal found 1/20$602
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/115:20 pmIAD - SOF
1 stop17h 35mUnited Airlines
mar. 2/256:00 amSOF - IAD
2 stops21h 41mUnited Airlines
Deal found 1/19$603
This Ovago deal was found by Cheapflights users on 1/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/217:59 pmIAD - SOF
2 stops39h 11mITA Airways
mié. 3/261:00 pmSOF - IAD
1 stop32h 40mITA Airways
Deal found 1/20$648
This Austrian Airlines deal was found by Cheapflights users on 1/20. 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.
jue. 3/207:00 pmIAD - SOF
1 stop10h 50mAustrian Airlines
lun. 3/316:55 pmSOF - IAD
1 stop26h 40mAustrian Airlines
Deal found 1/20$669
This KLM deal was found by Cheapflights users on 1/20. 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.
sáb. 3/226:35 pmIAD - SOF
1 stop13h 30mKLM
mar. 4/17:00 amSOF - IAD
2 stops16h 23mKLM
Deal found 1/20$682
This Gotogate deal was found by Cheapflights users on 1/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/205:45 pmIAD - SOF
2 stops22h 05mTAP AIR PORTUGAL
dom. 5/46:20 amSOF - IAD
2 stops21h 30mTAP AIR PORTUGAL
Deal found 1/20$883
This Air France deal was found by Cheapflights users on 1/20. 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.
vie. 3/217:40 pmIAD - SOF
2 stops13h 50mAir France
mar. 4/110:05 amSOF - IAD
2 stops16h 10mAir France
Deal found 1/20$952
This SWISS deal was found by Cheapflights users on 1/20. 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.
lun. 9/18:45 pmIAD - SOF
1 stop30h 20mSWISS
dom. 9/2812:45 pmSOF - IAD
2 stops34h 30mSWISS
Deal found 1/20$1,054

Find flights from Dulles Intl to Sofia within your budget

Customize your flight search to find flights from Dulles Intl to Sofia 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 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

dom. 3/9

10:25 pm-8:50 pm

1 stop16h 25m

Sofia

mar. 3/25

9:40 pm-8:30 pm

1 stop28h 50m

$588

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

lun. 3/17

3:55 pm-1:35 pm

2 stops15h 40m

Sofia

mié. 4/2

6:15 am-11:14 am

2 stops35h 59m

$590

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

lun. 3/17

7:00 pm-5:10 pm

1 stop16h 10m

Sofia

mié. 4/2

9:30 pm-3:50 pm

1 stop25h 20m

$592

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

mar. 3/11

7:00 pm-2:10 pm

1 stop13h 10m

Sofia

mar. 3/25

6:05 pm-4:35 pm

1 stop28h 30m

$598

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

dom. 3/9

11:20 pm-6:10 pm

1 stop12h 50m

Sofia

mar. 3/25

6:00 am-11:31 am

2 stops35h 31m

$602

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

mar. 2/11

5:20 pm-5:55 pm

1 stop17h 35m

Sofia

mar. 2/25

6:00 am-8:41 pm

2 stops21h 41m

$603

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

vie. 3/21

7:59 pm-5:10 pm

2 stops39h 11m

Sofia

mié. 3/26

1:00 pm-3:40 pm

1 stop32h 40m

$648

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

jue. 3/20

7:00 pm-11:50 am

1 stop10h 50m

Sofia

lun. 3/31

6:55 pm-2:35 pm

1 stop26h 40m

$669

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

sáb. 3/22

6:35 pm-2:05 pm

1 stop13h 30m

Sofia

mar. 4/1

7:00 am-4:23 pm

2 stops16h 23m

$682

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

dom. 4/20

5:45 pm-10:50 pm

2 stops22h 05m

Sofia

dom. 5/4

6:20 am-8:50 pm

2 stops21h 30m

$883

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 21 results
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Compare providers for flights from Dulles Intl to Sofia

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 Dulles Intl to Sofia in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Washington, D.C. Dulles Intl Airport-Sofia flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C. Dulles Intl Airport-Sofia flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Sofia flights, Cheapflights users trust AranGrant the most. AranGrant 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 Washington, D.C. Dulles Intl Airport-Sofia 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 Dulles Intl to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia 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.

Travel insights for flights from Dulles Intl to Sofia

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

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Sofia. Price data was last updated on January 17, 2025.

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Sofia. 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 Washington, D.C. Dulles Intl Airport to Sofia?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sofia (average of $632). Flying from Washington, D.C. Dulles Intl Airport to Sofia 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 SOF?

Find hourly flight availability from Dulles Intl to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 21, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 38% on flights from Washington, D.C. Dulles Intl Airport to Sofia by exploring options for tickets at noon.

Rainfall in Sofia by month

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

In terms of precipitation, rainfall in Sofia 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 Sofia when rainfall is around 1.2 in.

Temperature in Sofia by month

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

If weather is an important factor for your trip to Sofia, 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 Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated enero 21, 2025.
KLM
7.8
Good
1,341 reviews

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 10

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
1,341 reviews
KLM
7.8
Good
1,341 reviews

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 10

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
786 reviews
KLM
7.8
Good
1,341 reviews

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 10

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
1,599 reviews
KLM
7.8
Good
1,341 reviews

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 10

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
1,490 reviews
KLM
7.8
Good
1,341 reviews

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 10

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
8,982 reviews
KLM
7.8
Good
1,341 reviews

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 10

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 Dulles Intl to Sofia. 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 into for flights to Sofia from Washington, D.C. Dulles Intl?

    Most people fly into Sofia (SOF) if they book a flight to Sofia from Washington, D.C. Dulles Intl. On average, Sofia has 0 inbound flights from Washington, D.C. Dulles Intl per day from 7 airlines. Sofia is conveniently located just 4.2 mi from Sofia’s city center.

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

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Sofia round-trip from $588. Other airlines that can offer you cheap pricing are Air Canada, from $590, and British Airways, from $592. These flights start at 32% lower than the current average price 3 months from now.

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

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Sofia are ITA Airways ($641), Lufthansa ($744), and Air Canada ($758).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Sofia 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 Sofia?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sofia (average of $632). Flying from Washington, D.C. Dulles Intl Airport to Sofia 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.

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Alternative routes for Dulles Intl to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Dulles Intl to Sofia

Discover the top 7 airlines that operate flights from Dulles Intl to Sofia. 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 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$552Average$742FlexibilityNo cancel feeOn-time77%
ITA AirwaysCheapest$597Average$982FlexibilityNo cancel feeOn-time81%
British AirwaysCheapest$620Average$827FlexibilityNo cancel feeOn-time70%
SWISSCheapest$635Average$1,109FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$700Average$1,176FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$708Average$1,039FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$715Average$1,098FlexibilityNo cancel feeOn-time76%
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