IAD - SOF

$351 Find Cheap Flights from Washington, D.C. to Sofia - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$590
Typical prices: $722-$1,052
British Airways
Thu 10/18Fri 11/2
IAD - SOF • 1 stop
Cheapest one-way
$324
Typical prices: $420-$720
Multiple Airlines
Sat 11/3
IAD - SOF • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. Dulles Intl Airport and Sofia. You'll need to take a connecting flight to reach the destination.
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When to book
25 weeks
in advance
Our data shows that travelers who book at least 25 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 29% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Amsterdam Schiphol (AMS)
Cheapest • Avg $662 (round-trip)
Vienna Intl (VIE)
Shortest trip • 13h 01m (one-way)
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Insights
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Flight Deals

Cheap Flights from Washington, D.C. to Sofia (IAD-SOF)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Sofia

Sun, Oct 18 - Mon, Nov 2
British Airways Logo
7:15 pm - 7:20 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
17h 05m1 stop London Heathrow
British Airways Logo
5:15 pm - 7:55 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
33h 40m1 stop London Heathrow
$590British Airways
Sun, Oct 18 - Mon, Nov 2
British Airways Logo
10:25 pm - 7:20 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
13h 55m1 stop London Heathrow
British Airways Logo
5:15 pm - 3:40 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
29h 25m1 stop London Heathrow
$591British Airways
Tue, Dec 1 - Tue, Dec 8
Austrian Airlines Logo
6:10 pm - 11:55 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
22h 45m1 stop Vienna Intl
Austrian Airlines Logo
7:55 am - 2:10 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
13h 15m1 stop Vienna Intl
$607Austrian Airlines
Tue, Oct 27 - Tue, Nov 3
Austrian Airlines Logo
7:00 pm - 11:50 amIAD  Washington, D.C. Dulles Intl-SOF Sofia
10h 50m1 stop Vienna Intl
Austrian Airlines Logo
7:55 am - 2:10 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
13h 15m1 stop Vienna Intl
$607Austrian Airlines
Wed, Nov 18 - Wed, Nov 25
Lufthansa Logo
10:55 pm - 6:20 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
12h 25m1 stop Munich Franz Josef Strauss
Lufthansa Logo
6:00 am - 8:05 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
21h 05m1 stop Munich Franz Josef Strauss
$609Lufthansa
Wed, Nov 18 - Wed, Nov 25
Lufthansa Logo
10:55 pm - 6:20 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
12h 25m1 stop Munich Franz Josef Strauss
Lufthansa Logo
6:00 am - 8:05 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
21h 05m1 stop Munich Franz Josef Strauss
$610Lufthansa
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
3:37 pm - 1:15 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
15h 38m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
7:55 am - 2:10 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
13h 15m1 stop Vienna Intl
$622United Airlines
Tue, Nov 3 - Tue, Nov 17
United Airlines Logo
1:15 pm - 1:15 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
17h 00m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
7:55 am - 2:10 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
13h 15m1 stop Vienna Intl
$622United Airlines
Wed, Oct 7 - Wed, Oct 21
Turkish Airlines Logo
1:15 pm - 3:00 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
18h 45m1 stop Istanbul
Turkish Airlines Logo
9:10 pm - 7:45 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
29h 35m1 stop Istanbul
$794Turkish Airlines
Sun, Oct 4 - Fri, Oct 30
Turkish Airlines Logo
1:15 pm - 8:20 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
24h 05m1 stop Istanbul
Turkish Airlines Logo
4:00 pm - 12:45 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
26h 45m1 stop Istanbul
$794Turkish Airlines
Booking Insights

Price, demand and travel trends for Washington, D.C. Dulles Intl Airport to Sofia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Washington, D.C. Dulles Intl Airport to Sofia with more confidence.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Sofia?

Round-trip flights from Washington, D.C. Dulles Intl Airport to Sofia start at $590. Prices are below average for this route right now, with typical round-trip fares ranging from $722 to $1,052. The lowest price found in the past 5 days was $590 on British Airways.

What's the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Sofia?

Tuesday is the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Sofia, it is 6% cheaper than the average day. Saturday is the most expensive day with flight prices 11% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Sofia?

  • February is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Sofia at $622 round-trip.
  • December ($1,091) and June ($1,024) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 75% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Washington, D.C. Dulles Intl Airport to Sofia the cheapest?

Flights from Washington, D.C. Dulles Intl Airport to Sofia are cheapest 25 weeks before departure. Booking in this window typically costs about 23% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Washington, D.C. Dulles Intl Airport to Sofia flights

Low season

February

Cheapest flight

$324
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Washington, D.C. Dulles Intl Airport to Sofia

When to book flights from Washington, D.C. to Sofia

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Sofia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. Dulles Intl Airport to Sofia flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to Sofia?

    Flights from Washington, D.C. Dulles Intl Airport to Sofia usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Sofia (SOF).

  • What cabin classes can I book on flights from Washington, D.C. Dulles Intl Airport to Sofia?

    Three cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Sofia:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to Sofia pass through?

    One-stop flights from Washington, D.C. Dulles Intl Airport to Sofia most commonly connect through:

    • Istanbul (IST) - 40% of one-stop connections
    • Munich Franz Josef Strauss (MUC) - 27% of one-stop connections
    • Vienna Intl (VIE) - 16% of one-stop connections
    • Frankfurt am Main (FRA) - 7% of one-stop connections

    Istanbul (IST) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to Sofia?

    Yes. Being flexible with your travel dates can save you up to 16% on the Washington, D.C. Dulles Intl Airport to Sofia route. Tuesday is the cheapest departure day at $833 round-trip on average, while Saturday is the most expensive at $982, a difference of $149. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Sofia?

    Some of the most popular sights in Sofia are Sofia City Centre, The St. Alexander Nevsky Cathedral and Vitosha Boulevard. These are among the most viewed places in Sofia on KAYAK.

  • How expensive are last-minute Washington, D.C. Dulles Intl Airport to Sofia flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 8% above the route average of $881. Book 25 weeks before departure for the lowest fares.

  • How long is a flight from Washington, D.C. Dulles Intl Airport to Sofia?

    A nonstop flight from Washington, D.C. Dulles Intl Airport to Sofia takes 0h 00m, covering 4,931 miles.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to Sofia?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Washington, D.C. Dulles Intl Airport to Sofia changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $590 to $5,008. That means the highest observed fare was about 8x higher than the lowest one.

  • How are flight prices from Washington, D.C. Dulles Intl Airport to Sofia looking right now?

    One-way fares from Washington, D.C. Dulles Intl Airport to Sofia are currently lower than usual. Average one-way flight prices are about $405, which is 22% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Washington, D.C. Dulles Intl Airport to Sofia?

    Flying via Vienna Intl (VIE) gives the shortest average 1-stop total travel time at 13h 01m, compared with 13h 22m via Frankfurt am Main (FRA) and 13h 35m via Rome Fiumicino (FCO).

  • What is the time difference between Washington, D.C. Dulles Intl Airport and Sofia?

    Sofia is 7 hours ahead of Washington, D.C. Dulles Intl Airport (Eastern European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Sofia Airport (SOF)?

    Sofia Airport (SOF) hosts 5 major car rental companies, with daily rates starting from around $1 for economy cars. Top options include:
    • MEXRENTACAR
    • Easyrent
    • Top Rent a Car - Bulgaria
    • NU Car
    • Priceless

  • How much should I expect to pay for a Washington, D.C. Dulles Intl Airport to Sofia flight?

    Round-trip flights from Washington, D.C. Dulles Intl Airport to Sofia range from $722 to $1,052, with an average of $881 over the past 12 months. Anything below $722 counts as a good deal.

Your guide to booking Washington, D.C. Dulles Intl Airport to Sofia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Saturday. On this route, Tuesday flights average $833 - about $149 less than Saturday (15% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 25 weeks before you fly. On this route, that window historically saves about 23% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Sofia trip for February. Fares historically average $622 round-trip in that month - typically $469 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Sofia Airport.
    - Hotel Premier Airport Sofia
    - ibis Sofia Airport
    - Avel Guest House

More options for your flight from Washington, D.C. to Sofia

Complete your trip to Sofia with a hotel stay or car rental

Car rentals in Sofia
Hotels in Sofia
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