Cheap Flights from Washington D.C. to Sofia from €419

Frequently Asked Questions

• What are the cheapest flights from Washington D.C. to Sofia (WAS-SOF)?

  Based on Trip.com data, United Airlines offers one-way fares as low as €419 on Cheapest nonstop routes (e.g. IAD to SOF on Wed, Oct 28), while British Airways offers Cheapest nonstop round-trips from €623 departing on Fri, Nov 20 and returning on Tue, Nov 24.

• Which airlines offer flights from Washington D.C. to Sofia?

  At the moment, several airlines serve connecting flights from Washington D.C. to Sofia, including: Turkish Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

• When is the best time to book flights from Washington D.C. to Sofia?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Washington D.C. to Sofia is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Washington D.C. to Sofia?

  To find best deals on flights from Washington D.C. to Sofia, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Oct 28, with one-way flights priced at just €419.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Sofia travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Washington D.C. (WAS) to Sofia (SOF) the cheapest?

  The cheapest months to fly from Washington D.C. to Sofia is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Washington D.C. to Sofia on?

  After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Washington D.C. to Sofia on October 27, 2026 with Turkish Airlines, with prices starting at €705.

• Which airports can I fly into Sofia from Washington D.C.?

  You can arrive at any of the following airports in Sofia: Sofia Airport (SOF). Flights from Dulles International Airport to Sofia Airport (IAD-SOF) are by far the most popular option for this route.

• Is there any time difference between Washington D.C. and Sofia?

  The time difference between Sofia and Washington D.C. is 7h.

• How do I change or cancel my ticket from Washington D.C. to Sofia?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Washington D.C. to Sofia?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Washington D.C. to Sofia is €581. Fares vary by travel date, airline and availability.

• How do I book flights from Washington D.C. to Sofia on Trip.com?

  Enter Washington D.C. and Sofia, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.