Cheap Flights from Washington D.C. to Singapore from S$ 530

Frequently Asked Questions

• Which airlines offer the cheapest flights from Washington D.C. (WAS) to Singapore (SIN)?

  Based on Trip.com data, Alaska Airlines offers one-way fares as low as S$ 530 on Cheapest nonstop routes (e.g. DCA to SIN on Wed, Apr 22), while Etihad Airways offers Cheapest nonstop round-trips from S$ 1,061 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 direct flight from Washington D.C. to Singapore with the following airlines, including: United Airlines 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 Wed, Apr 22, with one-way flights priced at just S$ 530.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Alaska 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 Singapore travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Washington D.C. to Singapore to get the best price?

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

• Which upcoming date is the cheapest for flights from Washington D.C. to Singapore?

  After crunching the numbers on our April flight calendar, it's currently cheapest to fly from Washington D.C. to Singapore on April 22, 2026 with Alaska Airlines, with prices starting at S$ 521.

• Which airports can I fly through when travelling to 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).

• What is the time difference between Washington D.C. and Singapore?

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

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

  Tickets can only be changed or cancelled 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.