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$416+ Cheap flights from Reagan-National (DCA) to Sofia (SOF)

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SOF
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Reagan-National to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 August 18, 2025.

Round-trip from

$602
(FlightHub)

One-way from

$416
(Kiwi.com)

Popular in

September

Cheapest in

November

Average price

$727
From Washington, D.C. Reagan-National to Sofia
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One-way flight from Washington, D.C. Reagan-National to Sofia
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Highest demand for flights based on searches. 5% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Reagan-National to Sofia

Cheapest flights from Reagan-National to Sofia
Explore the most affordable flight options available from Reagan-National to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This FlightHub deal was found by Cheapflights users on 8/17. 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.
Tue 11/1811:05 amDCA - SOF
2 stops19h 40mAir Canada
Tue 12/26:00 amSOF - DCA
2 stops16h 31mAir Canada
Deal found 8/17$605
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Mon 12/18:45 pmDCA - SOF
2 stops40h 25mAmerican Airlines
Mon 12/155:25 pmSOF - DCA
2 stops31h 34mAmerican Airlines
Deal found 8/17$641
This FlightHub deal was found by Cheapflights users on 8/15. 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.
Thu 11/1311:05 amDCA - SOF
2 stops19h 45mAir Canada
Thu 11/276:00 amSOF - DCA
2 stops16h 31mAir Canada
Deal found 8/15$655
This Air Canada deal was found by Cheapflights users on 8/14. 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.
Sun 12/1411:05 amDCA - SOF
2 stops19h 05mAir Canada
Wed 1/146:10 amSOF - DCA
2 stops16h 21mAir Canada
Deal found 8/14$680
This Air Canada deal was found by Cheapflights users on 8/17. 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.
Tue 10/79:40 amDCA - SOF
2 stops25h 10mAir Canada
Thu 10/166:15 amSOF - DCA
2 stops16h 36mAir Canada
Deal found 8/17$685
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Sun 9/712:00 pmDCA - SOF
2 stops16h 15mUnited Airlines
Wed 9/176:15 amSOF - DCA
2 stops16h 36mUnited Airlines
Deal found 8/15$689
This Air Canada deal was found by Cheapflights users on 8/17. 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 10/68:40 pmDCA - SOF
2 stops38h 10mAir Canada
Tue 10/146:20 amSOF - DCA
2 stops35h 00mAir Canada
Deal found 8/17$691
This Air Canada deal was found by Cheapflights users on 8/17. 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.
Sun 10/128:40 pmDCA - SOF
2 stops32h 20mAir Canada
Thu 10/306:00 amSOF - DCA
2 stops22h 35mAir Canada
Deal found 8/17$694
This Air Canada deal was found by Cheapflights users on 8/17. 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 10/134:35 pmDCA - SOF
2 stops37h 45mAir Canada
Wed 10/292:00 pmSOF - DCA
2 stops26h 26mAir Canada
Deal found 8/17$695
This Air Canada deal was found by Cheapflights users on 8/17. 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.
Sun 10/1211:00 amDCA - SOF
2 stops18h 00mAir Canada
Wed 10/292:00 pmSOF - DCA
2 stops31h 51mAir Canada
Deal found 8/17$698
This Air Canada deal was found by Cheapflights users on 8/14. 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 12/154:10 pmDCA - SOF
2 stops14h 05mAir Canada
Mon 1/122:20 pmSOF - DCA
2 stops32h 11mAir Canada
Deal found 8/14$700
This United Airlines deal was found by Cheapflights users on 8/17. 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 10/81:00 pmDCA - SOF
2 stops15h 40mUnited Airlines
Wed 10/156:15 amSOF - DCA
2 stops18h 48mUnited Airlines
Deal found 8/17$701

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 August 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Sofia that are best for you.

Fly from

Reagan-National

Fly to

Sofia

Route

Depart

Return

Price

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Wed 1/14

6:00 am-6:20 pm

2 stops29h 20m

Sofia

Wed 1/28

6:10 am-9:56 pm

2 stops22h 46m

$602

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Tue 1/13

4:10 pm-1:50 pm

2 stops38h 40m

Sofia

Tue 1/27

6:00 am-3:31 pm

2 stops16h 31m

$605

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Tue 11/18

11:05 am-1:45 pm

2 stops19h 40m

Sofia

Tue 12/2

6:00 am-3:31 pm

2 stops16h 31m

$605

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Wed 2/11

11:05 am-6:20 pm

2 stops24h 15m

Sofia

Wed 2/25

6:10 am-10:35 pm

2 stops23h 25m

$609

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Mon 12/1

8:45 pm-8:10 pm

2 stops40h 25m

Sofia

Mon 12/15

5:25 pm-5:59 pm

2 stops31h 34m

$641

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Mon 1/12

4:10 pm-1:15 pm

2 stops14h 05m

Sofia

Mon 1/26

6:10 am-3:31 pm

2 stops16h 21m

$652

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Fri 1/16

6:00 am-1:35 pm

2 stops24h 35m

Sofia

Fri 1/30

6:10 am-9:56 pm

2 stops22h 46m

$655

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Sat 1/17

4:10 pm-1:35 pm

2 stops38h 25m

Sofia

Sat 1/31

6:25 am-9:56 pm

2 stops22h 31m

$655

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Thu 11/13

11:05 am-1:50 pm

2 stops19h 45m

Sofia

Thu 11/27

6:00 am-3:31 pm

2 stops16h 31m

$655

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Thu 1/15

6:00 am-1:50 pm

2 stops24h 50m

Sofia

Thu 1/29

6:00 am-3:31 pm

2 stops16h 31m

$656

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 22 results
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Best time to book a flight from Reagan-National to Sofia

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

What is the cheapest time of day to fly from DCA to SOF?

Find hourly flight availability from Reagan-National 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 August 18, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Sofia as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National?

    For a flight from Washington, D.C. Reagan-National to Sofia, you will be flying into Sofia. Sofia (SOF) is just 4.2 mi from the center of the city. Sofia is the only Sofia airport and it handles 0 inbound flights from Washington, D.C. Reagan-National per day. 0 airlines have flights to Sofia from Washington, D.C. Reagan-National on a regular basis.

  • Can I find deals for flights from Reagan-National to Sofia that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Sofia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Sofia?

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

  • Can I find deals for business class flights from Reagan-National to Sofia?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to Sofia?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Sofia (average of $632). Flying from Washington, D.C. Reagan-National Airport to Sofia in June is currently the most expensive (average of $1,186). 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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