United States
USD

IAD - SOF

$298 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
$661
Typical prices: $722-$1,052
Multiple Airlines
Mon 11/12Mon 11/19
IAD - SOF • 1 stop
Cheapest one-way
$298
Typical prices: $420-$720
Multiple Airlines
Sun 11/4
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.
Insights
Insights
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)
Insights
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

Thu, Nov 12 - Thu, Nov 19
Multiple Airlines Logo
5:50 pm - 9:20 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
20h 30m1 stop Madrid Barajas
Multiple Airlines Logo
5:40 am - 4:20 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
17h 40m1 stop Madrid Barajas
$661Multiple Airlines
Sat, Oct 17 - Wed, Oct 21
Multiple Airlines Logo
5:15 pm - 1:25 amIAD  Washington, D.C. Dulles Intl-SOF Sofia
25h 10m2 stops Dublin Madrid Barajas
Multiple Airlines Logo
6:10 am - 7:25 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
20h 15m2 stops Madrid Barajas Dublin
$674Multiple Airlines
Tue, Jan 26 - Tue, Feb 9
Lufthansa Logo
6:00 pm - 1:25 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
12h 25m1 stop Frankfurt am Main
Lufthansa Logo
6:25 am - 3:55 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
16h 30m1 stop Frankfurt am Main
$704Lufthansa
Tue, Mar 30 - Tue, Apr 13
Lufthansa Logo
10:20 pm - 6:40 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
13h 20m1 stop Munich Franz Josef Strauss
Lufthansa Logo
6:20 am - 3:55 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
16h 35m1 stop Frankfurt am Main
$705Lufthansa
Tue, Dec 29 - Tue, Jan 12
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
$711Austrian Airlines
Wed, Dec 30 - Wed, Jan 13
United Airlines Logo
5:35 pm - 1:15 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
12h 40m1 stop Munich Franz Josef Strauss
United Airlines Logo
6:25 am - 2:35 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
15h 10m1 stop Frankfurt am Main
$713United Airlines
Sun, Jan 17 - Fri, Apr 9
United Airlines Logo
5:35 pm - 1:15 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
12h 40m1 stop Munich Franz Josef Strauss
United Airlines Logo
6:20 am - 3:55 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
16h 35m1 stop Frankfurt am Main
$719United Airlines
Tue, Dec 29 - Tue, Jan 12
Austrian Airlines Logo
6:10 pm - 6:00 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
16h 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
$726Austrian Airlines
Tue, Dec 1 - Tue, Dec 8
Turkish Airlines Logo
1:30 pm - 8:40 amIAD  Washington, D.C. Dulles Intl-SOF Sofia
12h 10m1 stop Istanbul
Turkish Airlines Logo
9:30 am - 7:25 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
16h 55m1 stop Istanbul
$751Turkish Airlines
Wed, Nov 25 - Wed, Dec 9
Turkish Airlines Logo
1:30 pm - 8:50 pmIAD  Washington, D.C. Dulles Intl-SOF Sofia
24h 20m1 stop Istanbul
Turkish Airlines Logo
9:30 am - 7:25 pmSOF  Sofia-IAD Washington, D.C. Dulles Intl
16h 55m1 stop Istanbul
$751Turkish 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 with more confidence.

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

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

What’s 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 flights 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

$298
Beat the crowds with an average 86% drop in travelers.
The most popular month to fly with an average 85% increase in travelers.
One-way 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 answers about this route, including flight times, airports, airlines and booking tips.

  • 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

  • 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 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.

  • 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.

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

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

  • 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 $661 to $6,273. That means the highest observed fare was about 9x 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 higher than usual. Average one-way flight prices are about $842, which is 62% above the typical average for this route.

  • 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

  • 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).

  • 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

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

    Yes. Flexible dates can save you up to 16% on flights from Washington, D.C. Dulles Intl Airport to Sofia. 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.

  • 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 popular places can I visit in Sofia?

    Some of the most popular sights in Sofia are Vasil Levski National Stadium, National Palace of Culture and Central Sofia Market Hall. These are among the most viewed places in Sofia on KAYAK.

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 are flexible, aim for a Tuesday departure and avoid flying on Saturday. On this route, Tuesday flights average $833, about $149 less than Saturday fares (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
    • Hotel Consul

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
Vacations in Sofia