S$ 558 Find Cheap Flights from Washington, D.C. to Singapore

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Singapore departing on 31-3. 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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Cheap Flights from Washington, D.C. to Singapore

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Washington, D.C. to Singapore 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 Washington, D.C. to Singapore

Thu, 5 Mar - Fri, 13 Mar
Etihad Airways Logo
14:35 - 09:35
IAD
-
SIN
30h 00m
1 stop
Etihad Airways Logo
19:25 - 10:05
SIN
-
IAD
26h 40m
1 stop
S$ 1,076Etihad Airways
Thu, 5 Mar - Fri, 13 Mar
Turkish Airlines Logo
13:30 - 08:35
IAD
-
SIN
30h 05m
1 stop
Turkish Airlines Logo
11:40 - 12:45
SIN
-
IAD
37h 05m
1 stop
S$ 1,113Turkish Airlines
Sun, 12 Apr - Tue, 5 May
Air Canada Logo
09:55 - 05:15
IAD
-
SIN
31h 20m
2 stops
Air Canada Logo
07:00 - 20:29
SIN
-
IAD
25h 29m
2 stops
S$ 1,257Air Canada
Tue, 7 Apr - Tue, 14 Apr
Multiple Airlines Logo
17:59 - 15:05
IAD
-
SIN
33h 06m
2 stops
Multiple Airlines Logo
20:05 - 05:40
SIN
-
IAD
45h 35m
2 stops
S$ 1,259Multiple Airlines
Sun, 12 Apr - Tue, 5 May
Multiple Airlines Logo
15:10 - 09:40
IAD
-
SIN
30h 30m
1 stop
Multiple Airlines Logo
21:00 - 14:47
SIN
-
IAD
29h 47m
2 stops
S$ 1,263Multiple Airlines
Sun, 12 Apr - Tue, 5 May
Air Canada Logo
06:00 - 05:15
DCA
-
SIN
35h 15m
2 stops
Air Canada Logo
07:00 - 10:19
SIN
-
DCA
39h 19m
2 stops
S$ 1,298Air Canada
Fri, 24 Apr - Thu, 30 Apr
Singapore Airlines Logo
19:16 - 17:35
BWI
-
SIN
34h 19m
1 stop
Singapore Airlines Logo
09:00 - 05:44
SIN
-
BWI
32h 44m
1 stop
S$ 1,378Singapore Airlines
Fri, 24 Apr - Thu, 30 Apr
Cathay Pacific Logo
18:59 - 12:25
DCA
-
SIN
29h 26m
2 stops
Cathay Pacific Logo
12:45 - 23:59
SIN
-
DCA
47h 14m
2 stops
S$ 1,381Cathay Pacific
Tue, 7 Apr - Tue, 14 Apr
Cathay Pacific Logo
18:59 - 11:45
DCA
-
SIN
28h 46m
2 stops
Cathay Pacific Logo
13:25 - 23:59
SIN
-
DCA
46h 34m
2 stops
S$ 1,402Cathay Pacific
Wed, 13 May - Tue, 26 May
Singapore Airlines Logo
19:27 - 17:35
BWI
-
SIN
34h 08m
1 stop
Singapore Airlines Logo
09:00 - 06:28
SIN
-
BWI
33h 28m
1 stop
S$ 1,440Singapore Airlines
Booking Insights

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Singapore, 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 Washington, D.C. to Singapore is August, when tickets cost S$ 924 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of return tickets is S$ 2,498 and S$ 1,904 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Singapore, 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 a flight from Washington, D.C. to Singapore, you should book around 3 weeks before departure, which saves you about 38% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonNovember
Cheapest flightS$ 558
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly (61% more expensive on average)
Flight from Washington Dulles Airport to Singapore

FAQs - booking Singapore flights

  • Do I need to get a visa before I fly to Singapore?

    While you will need a passport that is valid for at least six months beyond the date of your intended duration of stay in Singapore, there is no need to get a visa so long as you plan on traveling as a tourist one business purposes for visits that last no more than 90 days. If you were traveling for any other purpose or you plan on staying in the country for longer than 90 days, you should visit the website at the Embassy of Singapore to get the most up-to-date visa information.

  • What are some things I should know about car child seat laws in Singapore before I depart from my arrival airport in Singapore?

    When transporting a child in a vehicle in Singapore, those under nine months old must use a rear-facing car seat, transitioning to a forward-facing seat until the age of four. Children up to six years old should travel in a booster seat, and those up to eight years old require a booster cushion for safe travel.

  • What are the primary differences between the three major airports in the Washington, D.C., area?

    Ronald Reagan Washington National Airport is the smallest and primarily handles domestic and short-haul international flights. Washington Dulles International Airport is a major international hub, offering a diverse range of domestic and international flights. Baltimore/Washington International Thurgood Marshall Airport is known for its mix of domestic and international flights, particularly with a focus on low-cost carriers.

  • What are reasons to upgrade to business class on United Airlines?

    Upgrading to Business Class on United Airlines elevates your travel experience with benefits such as spacious seating, enhanced comfort with lie-flat beds, gourmet dining options, and priority boarding. Enjoy exclusive lounges, attentive service from dedicated staff, increased baggage allowance, and superior in-flight entertainment, making your journey more luxurious and seamless.

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

    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 Washington, D.C. to Singapore.

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

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

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

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

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

    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 from Washington, D.C. to Singapore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Singapore

  • One of the most popular airport destinations in Singapore is Singapore Changi Airport (SIN). One way to get there from Washington, D.C., is to travel on a one-stop flight aboard ANA from Washington Dulles International Airport (IAD) with a layover at Haneda Airport (HND). Emirates Airlines also provide a one-stop flight with layover at Dubai.
  • If you are going to be departing from Baltimore Washington International Airport (BWI), a great way to get to the Singapore Changi Airport is to take a one-stop flight utilizing Condor and Lufthansa with a layover at Frankfurt Am Main International Airport (FRA).
  • If you plan on traveling early in the morning from Washington Dulles International Airport, you might consider staying at the Washington Dulles Airport Marriott, which sits right on the airport property and offers a shuttle to the terminal.
  • If your departure flight is from Ronald Reagan Washington National Airport (DCA) aboard American Airlines, you will be happy to know that this airline offers three of their lounge locations inside of Terminals C, D, and E.
  • For those that want to travel from the Ronald Reagan Washington National Airport to Singapore, there is a one-stop flight utilizing United Airlines in Singapore airlines that has a layover at Newark International Airport before arriving at Singapore Changi Airport.

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

 
Need help choosing which airline to fly with from Washington, D.C. to Singapore? 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 9299 reviews
6.6Food
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
Airline reviews

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

6.0 Goodrob, Feb 2026
IAD - YYZ
Read more United Airlines reviews

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

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

Cabin class types available on flights to Singapore

Cabin classes available on flights to Singapore. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.