HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Reagan-National (DCA) to Sofia (SOF) from $588

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
DCA — SOF
May 10 — May 171
From?
To?
Fri 5/10
Fri 5/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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 May 5, 2024.

Round-trip from

$658
From Washington, D.C. Reagan-National to Sofia
Search Deals

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Sofia?

To save up to 9% on this flight, we recommend booking at least 23 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Washington, D.C. Reagan-National Airport to Sofia from $741 1-2 weeks out and tickets from $747 for flights departing within the next 72 hours.

What is the cheapest month to fly from Washington, D.C. Reagan-National Airport to Sofia?

November can be a great time to fly to Sofia from Washington, D.C. Reagan-National Airport with a flight ticket averaging about $933. Cheapflights users have found deals in the month of November for as cheap as $532. The most expensive prices can be found in the month of June.

When is the cheapest time to fly from Washington, D.C. Reagan-National Airport to Sofia (DCA - SOF)?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Reagan-National Airport to Sofia in the afternoon. If you’re flexible enough to do this you can expect to save up to 33% on your trip compared to booking a flight in the morning.

Cheap American Airlines flights from Reagan-National to Sofia

Explore cheap flight options specifically provided by American Airlines for the route between Reagan-National and Sofia. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Check out some of the cheapest American Airlines flights we've come across from Washington, D.C. to Sofia. It's recommended that users confirm their flight details before booking.
Wed 10/307:49 pmDCA - SOF
2 stops14h 46mAmerican Airlines
Wed 11/136:05 pmSOF - DCA
2 stops29h 15mAmerican Airlines
Deal found 5/4$702
Sat 8/34:00 pmDCA - SOF
2 stops21h 05mAmerican Airlines
Sun 8/119:00 pmSOF - DCA
2 stops33h 01mAmerican Airlines
Deal found 5/5$3,839

Cheap Air Canada flights from Reagan-National to Sofia

Explore cheap flight options specifically provided by Air Canada for the route between Reagan-National and Sofia. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Have a look at some of the cheapest available Air Canada flights departing from Washington, D.C. and landing in Sofia. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Thu 10/314:20 pmDCA - SOF
2 stops15h 00mAir Canada
Thu 11/146:25 amSOF - DCA
2 stops20h 33mAir Canada
Deal found 5/3$735
Fri 11/14:20 pmDCA - SOF
2 stops15h 00mAir Canada
Fri 11/156:25 amSOF - DCA
2 stops16h 15mAir Canada
Deal found 5/4$825
Wed 9/411:00 amDCA - SOF
2 stops17h 20mAir Canada
Wed 9/186:30 amSOF - DCA
2 stops16h 29mAir Canada
Deal found 5/3$881
Sun 9/111:00 amDCA - SOF
2 stops17h 20mAir Canada
Sun 9/156:30 amSOF - DCA
2 stops22h 19mAir Canada
Deal found 5/3$931
Tue 8/611:00 amDCA - SOF
2 stops17h 20mAir Canada
Tue 8/206:30 amSOF - DCA
2 stops22h 19mAir Canada
Deal found 5/4$1,036
Mon 8/511:00 amDCA - SOF
2 stops17h 20mAir Canada
Mon 8/192:05 pmSOF - DCA
2 stops15h 30mAir Canada
Deal found 5/3$1,119
Fri 8/24:55 pmDCA - SOF
2 stops18h 50mAir Canada
Fri 8/92:05 pmSOF - DCA
2 stops15h 30mAir Canada
Deal found 5/5$1,121
Thu 7/411:00 amDCA - SOF
2 stops19h 20mAir Canada
Tue 8/206:30 amSOF - DCA
2 stops22h 19mAir Canada
Deal found 5/4$1,191
Tue 8/1311:00 amDCA - SOF
2 stops17h 20mAir Canada
Fri 8/236:30 amSOF - DCA
2 stops16h 29mAir Canada
Deal found 5/5$1,203

Cheap Reagan-National to Sofia flights in May & June 2024

Find cheap flight options from Reagan-National to Sofia specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,719,943 searches. Prices were last updated on May 5, 2024.
Check out some of the best flight deals from Washington, D.C. to Sofia in 2024. More deals are always being added, so be sure to check back regularly.
Sat 5/411:40 amDCA - SOF
2 stops25h 25mBritish Airways
Sat 5/118:05 pmSOF - DCA
2 stops34h 19mBritish Airways
Deal found 5/3$885
Sun 5/55:00 pmDCA - SOF
2 stops19h 10mBritish Airways
Mon 5/138:00 pmSOF - DCA
2 stops27h 29mBritish Airways
Deal found 5/3$1,050
Wed 5/1510:20 amDCA - SOF
2 stops18h 00mMultiple Airlines
Thu 5/236:30 amSOF - DCA
2 stops18h 15mMultiple Airlines
Deal found 5/3$1,080
Tue 6/411:00 amDCA - SOF
2 stops17h 20mAir Canada
Tue 6/186:30 amSOF - DCA
2 stops16h 29mAir Canada
Deal found 5/3$1,221
Wed 6/511:00 amDCA - SOF
2 stops17h 20mAir Canada
Wed 6/192:05 pmSOF - DCA
2 stops15h 30mAir Canada
Deal found 5/4$1,227
Mon 5/2711:00 amDCA - SOF
2 stops17h 20mAir Canada
Tue 6/46:30 amSOF - DCA
2 stops16h 27mAir Canada
Deal found 5/4$1,300
Sat 5/115:08 pmDCA - SOF
2 stops17h 02mMultiple Airlines
Sun 5/266:30 amSOF - DCA
2 stops16h 27mMultiple Airlines
Deal found 5/3$1,319
Tue 5/284:55 pmDCA - SOF
2 stops18h 50mAir Canada
Sat 6/1512:55 pmSOF - DCA
2 stops15h 52mAir Canada
Deal found 5/4$1,331
Sat 5/257:45 pmDCA - SOF
2 stops17h 20mBritish Airways
Sat 6/88:05 pmSOF - DCA
2 stops33h 59mBritish Airways
Deal found 5/3$1,401

Reagan-National to Sofia 2024 flight deals

Discover exclusive flight deals for travel between Reagan-National and Sofia in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Check out some of the best flight deals from Washington, D.C. to Sofia in 2024. More deals are always being added, so be sure to check back regularly.
Wed 10/307:49 pmDCA - SOF
2 stops14h 46mAmerican Airlines
Wed 11/136:05 pmSOF - DCA
2 stops29h 15mAmerican Airlines
Deal found 5/4$702
Thu 10/314:20 pmDCA - SOF
2 stops15h 00mAir Canada
Thu 11/146:25 amSOF - DCA
2 stops20h 33mAir Canada
Deal found 5/3$735
Fri 11/14:20 pmDCA - SOF
2 stops15h 00mAir Canada
Fri 11/156:25 amSOF - DCA
2 stops16h 15mAir Canada
Deal found 5/4$825
Tue 9/104:55 pmDCA - SOF
2 stops18h 50mMultiple Airlines
Tue 9/1712:55 pmSOF - DCA
2 stops15h 54mMultiple Airlines
Deal found 5/4$841
Mon 9/25:45 pmDCA - SOF
2 stops19h 40mBritish Airways
Mon 9/168:00 pmSOF - DCA
2 stops34h 19mBritish Airways
Deal found 5/4$861
Tue 10/16:10 pmDCA - SOF
2 stops43h 20mBritish Airways
Tue 10/159:15 pmSOF - DCA
2 stops29h 14mBritish Airways
Deal found 5/3$869
Wed 9/411:00 amDCA - SOF
2 stops17h 20mAir Canada
Wed 9/186:30 amSOF - DCA
2 stops16h 29mAir Canada
Deal found 5/3$881
Fri 10/46:28 pmDCA - SOF
2 stops17h 32mBritish Airways
Fri 10/182:30 pmSOF - DCA
2 stops15h 49mBritish Airways
Deal found 5/3$883
Sat 5/411:40 amDCA - SOF
2 stops25h 25mBritish Airways
Sat 5/118:05 pmSOF - DCA
2 stops34h 19mBritish Airways
Deal found 5/3$885

Reagan-National to Sofia flights leaving soon

Find last-minute flight options from Reagan-National to Sofia for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Consider one of these great deals we found on last-minute flights from Washington, D.C. to Sofia. It's wise to confirm all flight details are correct before booking.
Wed 5/1510:20 amDCA - SOF
2 stops18h 00mMultiple Airlines
Thu 5/236:30 amSOF - DCA
2 stops18h 15mMultiple Airlines
Deal found 5/3$1,080
Sat 5/115:08 pmDCA - SOF
2 stops17h 02mMultiple Airlines
Sun 5/266:30 amSOF - DCA
2 stops16h 27mMultiple Airlines
Deal found 5/3$1,319
Mon 5/135:08 pmDCA - SOF
2 stops35h 57mITA Airways
Mon 6/36:00 pmSOF - DCA
2 stops30h 30mITA Airways
Deal found 5/3$1,405
Sun 5/125:54 pmDCA - SOF
2 stops43h 31mBritish Airways
Tue 5/289:15 pmSOF - DCA
2 stops26h 08mBritish Airways
Deal found 5/3$1,573

One-way flights to Sofia from Reagan-National

Search for one-way flight options from Reagan-National to Sofia. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Take a look at some of the one-way flights we've detected from Washington, D.C. to Sofia. For those needing a return trip from Washington, D.C., there is a search form available above.
Wed 7/106:10 amDCA - SOF
3 stops26h 25mMultiple Airlines
Deal found 5/4$588
Wed 7/107:00 amDCA - SOF
2 stops21h 20mMultiple Airlines
Deal found 5/4$660
Fri 7/127:00 amDCA - SOF
2 stops23h 20mMultiple Airlines
Deal found 5/4$700
Thu 7/117:00 amDCA - SOF
2 stops21h 20mMultiple Airlines
Deal found 5/4$730
Tue 7/94:55 pmDCA - SOF
2 stops18h 50mAir Canada
Deal found 5/4$777
Thu 10/178:40 amDCA - SOF
2 stops21h 50mBritish Airways
Deal found 5/4$858
Sat 7/135:43 pmDCA - SOF
2 stops19h 22mBritish Airways
Deal found 5/4$890
Fri 7/1211:00 amDCA - SOF
2 stops19h 20mAir Canada
Deal found 5/4$892

Find flights from Reagan-National to Sofia within your budget

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 2,719,943 searches. Data last updated May 5, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$702 - $1,076

Route

Depart

Return

Price

Washington, D.C. Reagan-NationalSofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Wed 10/30

2 stops14h 46m

Sofia

Wed 11/13

2 stops29h 15m

$702

Washington, D.C. Reagan-NationalSofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Thu 10/31

2 stops15h 00m

Sofia

Thu 11/14

2 stops20h 33m

$735

Washington, D.C. Reagan-NationalSofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Fri 11/1

2 stops15h 00m

Sofia

Fri 11/15

2 stops16h 15m

$825

Washington, D.C. Reagan-NationalSofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Tue 9/10

2 stops18h 50m

Sofia

Tue 9/17

2 stops15h 54m

$841

Washington, D.C. Reagan-NationalSofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Mon 9/2

2 stops19h 40m

Sofia

Mon 9/16

2 stops34h 19m

$861

Washington, D.C. Reagan-NationalSofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Tue 10/1

2 stops43h 20m

Sofia

Tue 10/15

2 stops29h 14m

$869

Washington, D.C. Reagan-NationalSofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Wed 9/4

2 stops17h 20m

Sofia

Wed 9/18

2 stops16h 29m

$881

Washington, D.C. Reagan-NationalSofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Thu 8/1

2 stops28h 00m

Sofia

Wed 8/21

2 stops30h 40m

$924

Washington, D.C. Reagan-NationalSofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Fri 8/2

2 stops28h 00m

Sofia

Fri 8/9

2 stops19h 06m

$1,076

Flights are sorted by cheapest first

Deals found on 5/4

When is the cheapest time to fly from Washington, D.C. Reagan-National Airport to Sofia?

Use this chart to determine the cheapest time to fly round-trip from Reagan-National to Sofia. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Sofia flight should consider departing on Monday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Sofia by month

Plan your trip from Reagan-National to Sofia by taking into account the cheapest months to travel. The average price of a one-way flight from Reagan-National to Sofia is currently $762 while a round-trip flight costs $857. Price data was last updated on April 28, 2024.

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Sofia (average of $658). Flying from Washington, D.C. Reagan-National Airport to Sofia in June is currently the most expensive (average of $1,353). 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.

January

$661

February

$681

March

$680

April

$781

May

$932

June

$1,353

July

$1,164

August

$948

September

$790

October

$702

November

$658

December

$672

Temperature and rainfall in Sofia by month

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

SOF

Temperature

30.2 - 68 °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 May 5, 2024.
Peruse reviews from past customers who have flown with American Airlines, Air Canada and British Airways from Washington, D.C. to Sofia to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
11,118 reviews
Check prices

Crew

8.1

Entertainment

7.1

Comfort

7.2

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

United Airlines
7.4
Good
11,118 reviews
United Airlines
7.4
Good
11,118 reviews
Check prices

Crew

8.1

Entertainment

7.1

Comfort

7.2

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

American Airlines
7.3
Good
14,713 reviews
United Airlines
7.4
Good
11,118 reviews
Check prices

Crew

8.1

Entertainment

7.1

Comfort

7.2

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

Air Canada
7.0
Good
6,913 reviews
United Airlines
7.4
Good
11,118 reviews
Check prices

Crew

8.1

Entertainment

7.1

Comfort

7.2

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

British Airways
6.8
Okay
6,874 reviews
United Airlines
7.4
Good
11,118 reviews
Check prices

Crew

8.1

Entertainment

7.1

Comfort

7.2

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

ITA Airways
6.7
Okay
725 reviews
United Airlines
7.4
Good
11,118 reviews
Check prices

Crew

8.1

Entertainment

7.1

Comfort

7.2

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

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 flights from Washington, D.C. Reagan-National Airport to Sofia for under $800 on Cheapflights?

    Yes, there are multiple flights from Washington, D.C. Reagan-National Airport to Sofia for under $800. The cheapest flight booked recently is on American Airlines for just $702, but on average you can expect to pay $963.

  • Are there last-minute flights available from Washington, D.C. Reagan-National Airport to Sofia for under $1,100?

    There are currently 4+ open flights from Washington, D.C. Reagan-National Airport to Sofia within the next 7 days for less than $1,100.

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

    Cheapflights users have booked flights from Washington, D.C. Reagan-National Airport to Sofia round-trip from $702. Other airlines that can offer you cheap pricing are Air Canada, from $735, and British Airways, from $861.

  • What does DCA to SOF mean?

    Great question - DCA to SOF just means Washington, D.C. Reagan-National Airport to Sofia Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from Reagan-National to Sofia that include extra baggage allowance?

    The amount of baggage you can bring on your Reagan-National to Sofia flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Reagan-National to Sofia with specific airlines?

    Yes, Cheapflights allows you to browse and filter Reagan-National to Sofia flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Reagan-National to Sofia that allow pets onboard?

    Many airlines flying from Reagan-National to Sofia offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Reagan-National to Sofia?

    Yes, you can often find last-minute deals on Reagan-National to Sofia flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Washington, D.C. Reagan-National Airport to Sofia flight deals updated?

    The Washington, D.C. Reagan-National Airport to Sofia flight deals you see on this page were last updated on 5/4.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to Sofia
See prices for flight routes from nearby airports that may be better suited for you.

Dulles Intl to Sofia flights
Baltimore to Sofia flights
Chicago to Nashville flights
Seattle to Los Angeles flights
USA to Indonesia flights
USA to Curaçao flights
New York to Berlin flights
Los Angeles to Atlanta flights
Boston to Dallas flights
Denver to Chicago flights
Nashville to Boston flights
San Francisco to Hyderabad flights
Kansas City to Denver flights
Washington, D.C. Reagan-National Airport to Southampton flights

Search flights from Reagan-National to Sofia by cabin class

Find flights from Reagan-National to Sofia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Saint Peter Jersey
Flights to Kirkwall Arpt
Flights to Skiathos
Flights to Naxos
Flights to Ningbo Lishe Intl
Flights to Edremit/Korfez
Flights to Bourgas
Flights to Bodø
Flights to Pellston Emmet County
Flights to Cornwall Newquay
Flights to Ordu/Giresun
Flights to Batumi
Flights to Mason City
Flights to Biarritz Parme
Flights to Zakynthos Dionsios Salomos
Flights to Cortez Montezuma County
Flights to Clermont-Ferrand Aulnat
Flights to Nevsehir
Flights to Hyannis Barnstable
Flights to Girona Costa Brava
Flights to Kagoshima
Flights to Perugia Sant Egidio
Flights to Oran Es Senia
Flights to Chios

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Reagan-National to Sofia?

When you search for this flight from Reagan-National to Sofia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Reagan-National to Sofia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Reagan-National to Sofia for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Reagan-National to Sofia with no change fees?

Certainly. Search results for flights to Sofia from Reagan-National shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Reagan-National to Sofia become cheaper?

Yes! Start tracking prices for Reagan-National to Sofia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines