SIN - WAS

S$ 693 Find Cheap Flights from Singapore to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Singapore to Washington, D.C. departing on 23-9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to Washington, D.C., as well as popular online travel agencies
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Flight Deals

Cheap Flights from Singapore to Washington, D.C. (SIN-WAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Singapore to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Singapore to Washington, D.C.

Sun, 5 Oct - Sun, 19 Oct
Air Canada Logo
09:10 - 09:38SIN-IAD
36h 28m2 stops
Air Canada Logo
09:35 - 07:05IAD-SIN
33h 30m2 stops
S$ 1,116Air Canada
Find Deal
Thu, 9 Oct - Sat, 25 Oct
ANA Logo
22:10 - 10:05SIN-IAD
23h 55m1 stop
ANA Logo
13:20 - 06:55IAD-SIN
53h 35m2 stops
S$ 1,181ANA
Find Deal
Thu, 30 Oct - Thu, 6 Nov
 Logo
15:15 - 06:35SIN-BWI
27h 20m2 stops
 Logo
14:30 - 14:00BWI-SIN
34h 30m3 stops
S$ 1,200
Find Deal
Thu, 16 Oct - Fri, 24 Oct
 Logo
16:05 - 10:50SIN-BWI
30h 45m3 stops
 Logo
05:35 - 00:50BWI-SIN
31h 15m2 stops
S$ 1,222
Find Deal
Tue, 10 Mar - Sun, 15 Mar
Korean Air Logo
01:35 - 10:50SIN-IAD
21h 15m1 stop
Korean Air Logo
12:50 - 00:10IAD-SIN
23h 20m1 stop
S$ 1,272Korean Air
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Wed, 29 Oct - Wed, 5 Nov
Turkish Airlines Logo
23:25 - 12:45SIN-IAD
25h 20m1 stop
Turkish Airlines Logo
21:10 - 10:00IAD-SIN
23h 50m1 stop
S$ 1,291Turkish Airlines
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Thu, 30 Oct - Thu, 6 Nov
Turkish Airlines Logo
10:25 - 12:45SIN-IAD
38h 20m1 stop
Turkish Airlines Logo
13:30 - 08:45IAD-SIN
30h 15m1 stop
S$ 1,293Turkish Airlines
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Thu, 9 Oct - Sat, 25 Oct
United Airlines Logo
11:05 - 10:05SIN-IAD
35h 00m1 stop
United Airlines Logo
22:18 - 20:15IAD-SIN
33h 57m2 stops
S$ 1,485United Airlines
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Mon, 13 Oct - Mon, 20 Oct
United Airlines Logo
08:45 - 21:51SIN-DCA
25h 06m1 stop
United Airlines Logo
14:00 - 06:15DCA-SIN
28h 15m2 stops
S$ 1,514United Airlines
Find Deal
Tue, 28 Oct - Wed, 5 Nov
Korean Air Logo
01:35 - 10:50SIN-IAD
21h 15m1 stop
Korean Air Logo
11:50 - 00:10IAD-SIN
23h 20m1 stop
S$ 1,562Korean Air
Find Deal

Everything you should know

Top airlines
Air Canada
Cheapest • from S$ 1,116 (return)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 21% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
S$ 1,116
Overall average: S$ 1,501
Air Canada
Sun 5-10Sun 19-10
SIN - IAD • 2 stops
Cheapest one-way flight
S$ 693
Typical prices: S$ 1,090-1222
Air Canada
Tue 23-9
SIN - IAD • 2 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Booking Insights

KAYAK's insights & trends for Singapore to Washington, D.C. flights

Get data-powered insights and trends into flights from Singapore to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Singapore to Washington, D.C.?

The average price of all round-trip flights from Singapore to Washington, D.C. clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Washington, D.C. on a Friday and more expensive on a Tuesday. On your return trip to Singapore, you should consider flying back on a Tuesday, and avoid Fridays for better deals.

What is the cheapest month to fly from Singapore to Washington, D.C.?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Singapore to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Singapore to Washington, D.C. is September, where tickets cost S$ 1,294 (return) on average. On the other hand, the most expensive months are February and July, where the average cost of round-trip tickets is S$ 2,642 and S$ 1,828 respectively.

How far in advance should I book a flight from Singapore to Washington, D.C.?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Singapore to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Singapore to Washington, D.C., you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flightS$ 693
Best time to beat the crowds but there is an average 62% increase in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Singapore to Washington Dulles Airport

When to book flights from Singapore to Washington, D.C.

Are your dates flexible? Find out the best times to travel from Singapore to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Singapore to Washington, D.C.

  • What is the cheapest flight from Singapore to Washington, D.C.?

    In the last 3 days, the lowest price for a flight from Singapore to Washington, D.C. was S$ 541 for a one-way ticket and S$ 871 for a return.

  • Which airports will I be using when flying from Singapore to Washington, D.C.?

    On your way to Washington, D.C., you’ll fly out from Singapore Changi. You’ll be landing in one of Washington, D.C.’s 2 airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from Singapore to Washington, D.C.?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Singapore to Washington, D.C.?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Singapore and Washington, D.C., with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Singapore to Washington, D.C., United Airlines or Turkish Airlines?

    The two airlines most popular with KAYAK users for flights from Singapore to Washington, D.C. are United Airlines and Turkish Airlines. With an average price for the route of S$ 1,501 and an overall rating of 7.4, United Airlines is the most popular choice. Turkish Airlines is also a great choice for the route, with an average price of S$ 1,394 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Singapore to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Singapore to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Singapore to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Singapore is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Singapore to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington, D.C. with an airline and back to Singapore with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Singapore to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Singapore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Singapore to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Singapore to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Singapore to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8929 reviews
6.6Food
7.3Comfort
7.7Boarding
7.1Entertainment
8.1Crew
Airline reviews

IAD with the archaic people movers is just a place to be avoided.

10.0 ExcellentThomas, Aug 2025CMH - IAD
Read more United Airlines reviews

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

United airlines, mediocre at best. No issues , nothing great . Worked for me

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

We couldn’t fly to Chicago on our booked flight. The flight was overbooked.

Small seat space for 13 hours flight, they charged for baggage , very bad quality of food,

I was sitting almost in the back, the seats are very tight and there’s no legroom, it’s uncomfortable for a long distance

Absolute worst airline. Charged us $720 to check 4 bags (2 of which were carry-on). Entertainment systems didnt work. And on a 12 hour flight they served 2 meals and never once came around outside of those 2 meals with a beverage or cup of water. Will never fly them again.

Took forever to board. They made announcements without the loudspeaker and since the waiting room was full of screaming kids, no one could hear what they were saying. The business class sleeper seats were designed for tall skinny people. When partially reclined there was nowhere to rest my feet because they did not reach the footrest. and when fully reclined there wasn't room at my sides for my arms. Definitely one of the worst sleeper seats I have ever had.

About an hour delay but we made it to Chicago. I feel that the smaller connecting flights are the ones that cause the delays on the bigger planes that fly international.

Amazing trip! No delays, no broken or lost luggage, and amazing food.

The food we received during the flight was excellent. The service was very friendly. Definitely the best value for the money when flying across the Atlantic.

I use a wheelchair for mobility. Both in my flight from Houston and back to Houston from Istanbul, the Turkish airline staff asked that I claim my wheelchair at the luggage area. On arrival to Istanbul, parts of the wheelchair were in disarray at that time I raised no objection however upon claiming my wheelchair in Houston parts where outright missing. In both occasions, upon arriving in Houston and arriving in Istanbul, I asked multiple times why am made to pick up my wheelchair in the baggage claim rather than at the jet bridge. Getting the wheelchair at the jet bridge minimizes the probability of loosing parts because they can be hopefully reclaimed on the spot. I was told in Houston that a manager turned down my request to claim the wheelchair at the jet bridge in Houston. This is extremely frustrating because a wheelchair is not a set of clean underwear or a toothbrush- this is the way I move. A Turkish Arline staff took my complaint at the luggage claim area in Houston but as of the writing of this review the only contact I have received from the airline is because I initiated a claim rather than her as she told me she would.

The security at the airport was excellent. The one criticism is the boarding process just before entering the plane. There were only 2 boarding lines and there were no barriers thus leading to a mass rush to enter the plane. I suggest that they board by rows, eight or ten rows at a time to prevent the mass rush to enter the plane. Otherwise, I would highly recommend Turkish Airlines

Everything you need to know for your flight from Singapore to Washington, D.C.

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