Cheap Flights from Singapore to Washington D.C. from $546

Frequently Asked Questions

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

  Based on Trip.com data, Air China offers one-way fares as low as $546 on Cheapest nonstop routes (e.g. SIN to IAD on Mon, Apr 20), while Air China offers Cheapest nonstop round-trips from $976 departing on Mon, Mar 23 and returning on Mon, Mar 30.

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

  At the moment, you can catch a nonstop flight from Singapore to Washington D.C. with the following airlines, including: Scoot Air China Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Singapore to Washington D.C. 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 Singapore to Washington D.C.?

  To find best deals on flights from Singapore to Washington D.C., 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 Mon, Apr 20, with one-way flights priced at just $546.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Air China.
  · 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 Washington D.C. travel is around January.
  · Get exclusive promo codes for Trip.com app users.

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

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

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

  After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Singapore to Washington D.C. on March 26, 2026 with Air China, with prices starting at $474.

• Which airports can I fly to for Washington D.C. from Singapore?

  You can land at any one of the following hubs in Washington D.C., with Singapore Changi Airport to Dulles International Airport (SIN-IAD) is by far the most common option on this route: Dulles International Airport (IAD) Ronald Reagan Washington National Airport (DCA).

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

  The time difference between Washington D.C. and Singapore is 13h.

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

  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.