Cheap Flights from Singapore (SIN) to Washington (IAD)

View AU$776 flight on Thu, 29 Oct 2026Opens in a new window

Popular airlines from Changi Airport (SIN) to Washington Dulles International Airport (IAD)

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Cheap Flights from Singapore (SIN) to Washington (IAD)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Thu, 29 Oct - Thu, 5 Nov
SIN
Singapore
IAD
Washington
AU$1,827 Return, found 23 hours ago
AU$1,827
Return
found 23 hours ago
Select Singapore Airlines flight, departing Thu, 29 Oct from Singapore to Washington, returning Thu, 5 Nov, priced at AU$1,827 found 23 hours ago
Air China
Thu, 29 Oct - Thu, 5 Nov
SIN
Singapore
IAD
Washington
AU$1,898 Return, found 23 hours ago
AU$1,898
Return
found 23 hours ago
Select Air China flight, departing Thu, 29 Oct from Singapore to Washington, returning Thu, 5 Nov, priced at AU$1,898 found 23 hours ago
Emirates
Thu, 29 Oct - Thu, 5 Nov
SIN
Singapore
IAD
Washington
AU$1,929 Return, found 23 hours ago
AU$1,929
Return
found 23 hours ago
Select Emirates flight, departing Thu, 29 Oct from Singapore to Washington, returning Thu, 5 Nov, priced at AU$1,929 found 23 hours ago
Emirates
Thu, 29 Oct - Thu, 5 Nov
SIN
Singapore
IAD
Washington
AU$1,932 Return, found 23 hours ago
AU$1,932
Return
found 23 hours ago
Select Emirates flight, departing Thu, 29 Oct from Singapore to Washington, returning Thu, 5 Nov, priced at AU$1,932 found 23 hours ago
Qatar Airways
Sat, 27 June - Sat, 4 July
SIN
Singapore
IAD
Washington
AU$2,061 Return, found 3 days ago
AU$2,061
Return
found 3 days ago
Select Qatar Airways flight, departing Sat, 27 June from Singapore to Washington, returning Sat, 4 July, priced at AU$2,061 found 3 days ago
Turkish Airlines
Thu, 29 Oct - Thu, 5 Nov
SIN
Singapore
IAD
Washington
AU$2,083 Return, found 23 hours ago
AU$2,083
Return
found 23 hours ago
Select Turkish Airlines flight, departing Thu, 29 Oct from Singapore to Washington, returning Thu, 5 Nov, priced at AU$2,083 found 23 hours ago
Korean Air
Thu, 29 Oct - Thu, 5 Nov
SIN
Singapore
IAD
Washington
AU$2,113 Return, found 23 hours ago
AU$2,113
Return
found 23 hours ago
Select Korean Air flight, departing Thu, 29 Oct from Singapore to Washington, returning Thu, 5 Nov, priced at AU$2,113 found 23 hours ago
United
Thu, 29 Oct - Thu, 5 Nov
SIN
Singapore
IAD
Washington
AU$2,190 Return, found 23 hours ago
AU$2,190
Return
found 23 hours ago
Select United flight, departing Thu, 29 Oct from Singapore to Washington, returning Thu, 5 Nov, priced at AU$2,190 found 23 hours ago
Delta
Thu, 29 Oct - Thu, 5 Nov
SIN
Singapore
IAD
Washington
AU$2,563 Return, found 23 hours ago
AU$2,563
Return
found 23 hours ago
Select Delta flight, departing Thu, 29 Oct from Singapore to Washington, returning Thu, 5 Nov, priced at AU$2,563 found 23 hours ago
British Airways
Thu, 29 Oct - Thu, 5 Nov
SIN
Singapore
IAD
Washington
AU$2,646 Return, found 23 hours ago
AU$2,646
Return
found 23 hours ago
Select British Airways flight, departing Thu, 29 Oct from Singapore to Washington, returning Thu, 5 Nov, priced at AU$2,646 found 23 hours ago

Frequently asked questions

How do I find cheap flights from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
To find a cheap flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
There are approximately 77 connecting flights per day from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.). Some common connection points include Incheon Intl. (ICN), Kuala Lumpur Intl. (KUL), and San Francisco Intl. (SFO).
What is the earliest flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
The earliest flight from Singapore (SIN-Changi) (SIN) to Washington, DC (IAD-Washington Dulles Intl.) (IAD) typically departs at approximately 12:05 AM local time. This service is operated by LX, 2L, and UA and is seasonal, active in January, February, October, and November. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
You'll typically find the most flights from Singapore Changi (SIN) to Washington Dulles Intl. (IAD) on a Tuesday, with around 46 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Qatar Airways, Singapore Airlines, and Malaysia Airlines. Flight options are fairly consistent throughout the week, with Tuesday offering only slightly more flights than other days.
What are the most popular departure times for flights from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
The most popular departure times for flights from Singapore Changi (SIN) to Washington Dulles Intl. (IAD) are in the late evening, from 9pm to midnight. About 32% of passengers prefer this time window. Many major carriers, including United Airlines, Emirates and Lufthansa, offer flights during this window. These times work well because you can maximise your time in Singapore before your evening flight, and you'll arrive in Washington, DC in the morning ready to explore.
How long does it take to fly from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
Flights from SIN to IAD with one stop typically take around 24 hours 30 minutes, covering approximately 9,651 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
Select the "Business class" and "First class" filters when looking for SIN to IAD flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight with Expedia?
It's easy to earn miles on a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Washington from Changi (SIN)?
When traveling from Changi (SIN) to Washington, you can fly into Washington Dulles Intl. (IAD) and Ronald Reagan Washington National (DCA). Some flights may connect through major hubs like ZRH (ZRH), San Francisco Intl. (SFO), Taoyuan Intl. (TPE) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) at the last minute?
Typically, booking a last minute flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package?
Securing a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
If you booked your Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Changi
Destination airport
Washington Dulles Intl.
Airlines serving
Air France, All Nippon Airways, British Airways, Delta, Emirates, KLM, Korean Air, Lufthansa, Qatar Airways, Swiss International Air Lines, Turkish Airlines, United
Return price
AU$1,827
Distance
15439 km

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Your quick guide to flights from Singapore to Washington

Pick up great flights from Singapore to Washington

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Singapore to Washington. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Singapore to Washington that take around hours.

Find cheap flights from Singapore to Washington

From the great flight deals with prices currently ranging from AU$1,827 to AU$2,646, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Singapore to Washington around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Washington is normally in October.

Reasons to book your flight from Singapore to Washington with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Singapore to Washington across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Washington right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Singapore to Washington

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