SIN - WAS

S$ 700 Find Cheap Flights from Singapore to Washington, D.C. – Compare and Save

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 18-9. 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, 0 bags

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Everything you should know

Cheapest return fare
S$ 1,010
Typical prices: S$ 3,999-S$ 5,105
Air China
Mon 2-11Fri 6-11
SIN - IAD • 1 stop
Cheapest one-way flight
S$ 700
Typical prices: S$ 810-S$ 1,157
Air China
Fri 18-9
SIN - IAD • 1 stop
Top airlines
Air China
Cheapest • from S$ 1,010 (return)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Singapore and Washington, D.C.. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Istanbul (IST)
Cheapest • Avg S$ 1,433 (return)
Taipei City (TPE)
Shortest trip • 21h 20m (one-way)
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 25% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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.!
Flight Deals
Booking Insights
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.

Mon, 2 Nov - Fri, 6 Nov
Air China Logo
23:55 - 18:30SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
31h 35m1 stop Beijing Capital
Air China Logo
22:00 - 06:50IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
43h 50m1 stop Beijing Capital
S$ 1,010Air China
Fri, 11 Sep - Fri, 18 Sep
Air China Logo
09:00 - 19:30SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
22h 30m1 stop Beijing Capital
Air China Logo
23:00 - 16:25IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
29h 25m1 stop Beijing Capital
S$ 1,037Air China
Thu, 3 Sep - Fri, 18 Sep
Air China Logo
23:25 - 19:30SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
32h 05m1 stop Beijing Capital
Air China Logo
23:00 - 16:25IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
29h 25m1 stop Beijing Capital
S$ 1,126Air China
Fri, 11 Sep - Fri, 18 Sep
Air China Logo
09:00 - 19:30SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
22h 30m1 stop Beijing Capital
Air China Logo
23:00 - 06:50IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
43h 50m1 stop Beijing Capital
S$ 1,165Air China
Wed, 23 Sep - Thu, 1 Oct
Qatar Airways Logo
03:15 - 23:59SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
32h 44m2 stops Doha Hamad Intl Seattle/Tacoma Intl
Qatar Airways Logo
11:05 - 21:15IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
22h 10m1 stop Doha Hamad Intl
S$ 1,610Qatar Airways
Fri, 27 Nov - Fri, 4 Dec
Turkish Airlines Logo
11:35 - 19:25SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
44h 50m1 stop Istanbul
Turkish Airlines Logo
13:30 - 08:45IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
30h 15m1 stop Istanbul
S$ 1,706Turkish Airlines
Sat, 6 Feb - Sun, 14 Feb
Turkish Airlines Logo
10:25 - 19:25SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
46h 00m1 stop Istanbul
Turkish Airlines Logo
21:20 - 08:45IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
22h 25m1 stop Istanbul
S$ 1,761Turkish Airlines
Tue, 15 Sep - Sat, 19 Sep
Turkish Airlines Logo
10:25 - 11:30SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
37h 05m1 stop Istanbul
Turkish Airlines Logo
21:40 - 09:30IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
23h 50m1 stop Istanbul
S$ 1,812Turkish Airlines
Sat, 19 Sep - Mon, 18 Jan
Qatar Airways Logo
03:15 - 15:40SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
24h 25m1 stop Doha Hamad Intl
Qatar Airways Logo
20:05 - 14:55IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
29h 50m1 stop Doha Hamad Intl
S$ 1,899Qatar Airways
Sat, 19 Sep - Sun, 17 Jan
Qatar Airways Logo
03:15 - 15:40SIN  Singapore Changi-IAD Washington, D.C. Dulles Intl
24h 25m1 stop Doha Hamad Intl
Qatar Airways Logo
20:05 - 14:55IAD  Washington, D.C. Dulles Intl-SIN Singapore Changi
29h 50m1 stop Doha Hamad Intl
S$ 1,932Qatar Airways
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 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 February, where tickets cost S$ 1,442 (return) on average. On the other hand, the most expensive months are November and July, where the average cost of round-trip tickets is S$ 3,999 and S$ 1,932 respectively.

Find deals

Good to know

Low season

February

Cheapest flight

S$ 700
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly and prices are also 17% 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 5 days, the lowest price for a flight from Singapore to Washington, D.C. was S$ 700 for a one-way ticket and S$ 1,010 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 oneworld are the airline alliances operating flights between Singapore and Washington, D.C., with Star Alliance being the most commonly used for this route.

  • 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 airline 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 10099 reviews
8.1Crew
6.7Food
7.1Entertainment
7.7Boarding
7.3Comfort
Airline reviews

The flight to America was freezing. The overnight flight back to the UK was boiling hot and the cabin stank of toilet or occasionally perfume, even though I was several rows back from either bathroom. Food was tiny portions. Two small pieces of tough and dry beef in random gravy with pretend mashed potato raking up most of it. Very little veg. Salad was ok. Wooden cutlery broke within minutes of using. Lots of old films for entertainment. Some new ones. Generally a bit rubbish.

2.0 MediocreK, Aug 2026
Read more United Airlines reviews

The flight to America was freezing. The overnight flight back to the UK was boiling hot and the cabin stank of toilet or occasionally perfume, even though I was several rows back from either bathroom. Food was tiny portions. Two small pieces of tough and dry beef in random gravy with pretend mashed potato raking up most of it. Very little veg. Salad was ok. Wooden cutlery broke within minutes of using. Lots of old films for entertainment. Some new ones. Generally a bit rubbish.

Entertainment center did not work and no electric available at seat for 11 hour flight. Didn’t have access to overhead light or call button. Food was tasteless and had a high salt (27 %) of recommended daily salt intake

What would be infinitely better if for Kayak to not offer this flight as if it was completely different airlines rather than United and then filtering me through some creepy discount site.

Our flight gor canceled and there was no one to help us but told us to scan the qr code and fill the forms on-line. Very poor service especially we are tourists traveling to Washington DC for the 1st time.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

The flight was canceled. I couldn't get on another flight. Meal voucher wouldn't work. The whole experience was a clusterfuck.

Staff was generally seeming stressed out and was a bit rude and slow. Plane left late. Pilot was very well-spoken.

I was not expecting much as i was not in a premium cabin. I was pleasantly surprised that the seat in economy plus was spacious and food was ample. Party of 5 with 2 parents and 3 kids.

Meals were adequate but could be better. Lots of movies, podcasts, tv shows. We really enjoyed using our personal headsets highly recommended. 15 hrs flight great to travel at night.

Customer service - staff was effective in getting my trip rescheduled

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

Information on your arrival and departure airports

Singapore (SIN)