Cheap Flights from Washington D.C. to Singapore from $411

Frequently Asked Questions

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

  Based on Trip.com data, Delta Air Lines offers one-way fares as low as $411 on Cheapest nonstop routes (e.g. DCA to SIN on Sat, Apr 25), while Etihad Airways offers Cheapest nonstop round-trips from $826 departing on Tue, Apr 14 and returning on Mon, Apr 20.

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

  At the moment, you can catch a nonstop flight from Washington D.C. to Singapore with the following airlines, including: Etihad Airways 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 Washington D.C. to Singapore?

  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 Singapore 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 Singapore?

  To find best deals on flights from Washington D.C. to Singapore, 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 Sat, Apr 25, with one-way flights priced at just $411.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
  · 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 Singapore travel is around January.
  · Get exclusive promo codes for Trip.com app users.

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

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

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

  After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Washington D.C. to Singapore on March 19, 2026 with Etihad Airways, with prices starting at $916.

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

  You can land at any one of the following hubs in Singapore, with Dulles International Airport to Singapore Changi Airport (IAD-SIN) is by far the most common option on this route: Singapore Changi Airport (SIN) Seletar Airport (XSP).

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

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

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

  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.