S$ 702 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 7-6. 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

Wed, 5 Aug - Thu, 10 Sep
Etihad Airways Logo
15:10 - 09:40
IAD
-
SIN
30h 30m
1 stop
Etihad Airways Logo
21:00 - 09:45
SIN
-
IAD
24h 45m
1 stop
S$ 1,312Etihad Airways
Thu, 1 Oct - Thu, 22 Oct
Etihad Airways Logo
15:10 - 09:40
IAD
-
SIN
30h 30m
1 stop
Etihad Airways Logo
21:00 - 09:45
SIN
-
IAD
24h 45m
1 stop
S$ 1,317Etihad Airways
Mon, 14 Sep - Thu, 17 Sep
Turkish Airlines Logo
21:45 - 17:55
IAD
-
SIN
32h 10m
1 stop
Turkish Airlines Logo
10:25 - 11:35
SIN
-
IAD
37h 10m
1 stop
S$ 1,324Turkish Airlines
Thu, 10 Sep - Thu, 24 Sep
Turkish Airlines Logo
21:45 - 17:55
IAD
-
SIN
32h 10m
1 stop
Turkish Airlines Logo
10:25 - 11:35
SIN
-
IAD
37h 10m
1 stop
S$ 1,325Turkish Airlines
Wed, 5 Aug - Thu, 10 Sep
Air Canada Logo
16:20 - 05:15
DCA
-
SIN
48h 55m
2 stops
Air Canada Logo
07:00 - 10:20
SIN
-
DCA
39h 20m
2 stops
S$ 1,542Air Canada
Sun, 23 Aug - Thu, 3 Sep
Finnair Logo
18:23 - 18:30
DCA
-
SIN
36h 07m
2 stops
Finnair Logo
21:35 - 23:33
SIN
-
DCA
37h 58m
2 stops
S$ 1,687Finnair
Sun, 23 Aug - Wed, 2 Sep
Finnair Logo
18:41 - 18:30
BWI
-
SIN
35h 49m
2 stops
Finnair Logo
21:35 - 11:20
SIN
-
BWI
49h 45m
2 stops
S$ 1,688Finnair
Thu, 27 Aug - Sun, 27 Sep
Multiple Airlines Logo
20:55 - 08:50
DCA
-
SIN
47h 55m
2 stops
Multiple Airlines Logo
03:15 - 21:00
SIN
-
DCA
29h 45m
2 stops
S$ 1,702Multiple Airlines
Sat, 29 Aug - Mon, 14 Sep
Multiple Airlines Logo
18:16 - 17:35
BWI
-
SIN
35h 19m
1 stop
Multiple Airlines Logo
22:00 - 06:30
SIN
-
BWI
44h 30m
2 stops
S$ 1,706Multiple Airlines
Wed, 20 May - Tue, 2 Jun
Air Canada Logo
12:45 - 05:15
DCA
-
SIN
52h 30m
2 stops
Air Canada Logo
07:00 - 10:19
SIN
-
DCA
39h 19m
2 stops
S$ 1,763Air Canada
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 September, when tickets cost S$ 435 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of return tickets is S$ 1,360 and S$ 1,120 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 32% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Find deals

Good to know

Low seasonFebruary
Cheapest flightS$ 702
Best time to beat the crowds (22% less expensive on average)
Most popular time to fly (63% 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 9694 reviews
7.1Entertainment
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
Airline reviews

Vegetarian selection could be better. Bread was too hard to chew.

8.0 ExcellentAnonymous, Apr 2026
IAD - FRA
Read more United Airlines reviews

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

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.

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.
First Class flights from Washington, D.C. to Singapore
Business Class flights from Washington, D.C. to Singapore
Premium Economy Class flights from Washington, D.C. to Singapore
Economy class flights from Washington, D.C. to Singapore