$539 Cheap Flights from Singapore (SIN) to Washington (IAD)

View $539 flight on Tue, Oct 28, 2025Opens in a new window

Popular airlines from Singapore Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD)

Cheap Flights from Singapore to Washington (SIN-IAD)

Prices were available within the past 7 days and start at $539 for one-way flights and $879 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Fri, Jan 23 - Fri, Jan 30
SIN
Singapore
IAD
Washington
$879 Roundtrip, found 2 days ago
$879
Roundtrip
found 2 days ago
Select Air Canada flight, departing Fri, Jan 23 from Singapore to Washington, returning Fri, Jan 30, priced at $879 found 2 days ago
Air China
Mon, Nov 10 - Tue, Nov 18
SIN
Singapore
IAD
Washington
$932 Roundtrip, found 3 days ago
$932
Roundtrip
found 3 days ago
Select Air China flight, departing Mon, Nov 10 from Singapore to Washington, returning Tue, Nov 18, priced at $932 found 3 days ago
Korean Air
Mon, Oct 27 - Sun, Nov 9
SIN
Singapore
IAD
Washington
$986 Roundtrip, found 5 hours ago
$986
Roundtrip
found 5 hours ago
Select Korean Air flight, departing Mon, Oct 27 from Singapore to Washington, returning Sun, Nov 9, priced at $986 found 5 hours ago
Delta
Mon, Nov 10 - Wed, Nov 26
SIN
Singapore
IAD
Washington
$997 Roundtrip, found 23 hours ago
$997
Roundtrip
found 23 hours ago
Select Delta flight, departing Mon, Nov 10 from Singapore to Washington, returning Wed, Nov 26, priced at $997 found 23 hours ago
Turkish Airlines
Sun, Nov 23 - Sat, Nov 29
SIN
Singapore
IAD
Washington
$1,049 Roundtrip, found 2 days ago
$1,049
Roundtrip
found 2 days ago
Select Turkish Airlines flight, departing Sun, Nov 23 from Singapore to Washington, returning Sat, Nov 29, priced at $1,049 found 2 days ago
STARLUX Airlines
Tue, Nov 11 - Sat, Jan 17
SIN
Singapore
IAD
Washington
$1,137 Roundtrip, found 2 days ago
$1,137
Roundtrip
found 2 days ago
Select STARLUX Airlines flight, departing Tue, Nov 11 from Singapore to Washington, returning Sat, Jan 17, priced at $1,137 found 2 days ago
United
Thu, Oct 30 - Thu, Nov 6
SIN
Singapore
IAD
Washington
$1,143 Roundtrip, found 2 days ago
$1,143
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 30 from Singapore to Washington, returning Thu, Nov 6, priced at $1,143 found 2 days ago
Japan Airlines
Mon, Nov 24 - Wed, Nov 26
SIN
Singapore
IAD
Washington
$1,206 Roundtrip, found 2 days ago
$1,206
Roundtrip
found 2 days ago
Select Japan Airlines flight, departing Mon, Nov 24 from Singapore to Washington, returning Wed, Nov 26, priced at $1,206 found 2 days ago
Saudia
Tue, Feb 17 - Sat, Feb 28
SIN
Singapore
IAD
Washington
$1,218 Roundtrip, found 12 hours ago
$1,218
Roundtrip
found 12 hours ago
Select Saudia flight, departing Tue, Feb 17 from Singapore to Washington, returning Sat, Feb 28, priced at $1,218 found 12 hours ago
British Airways
Mon, Nov 10 - Sat, Nov 15
SIN
Singapore
IAD
Washington
$1,319 Roundtrip, found 1 day ago
$1,319
Roundtrip
found 1 day ago
Select British Airways flight, departing Mon, Nov 10 from Singapore to Washington, returning Sat, Nov 15, priced at $1,319 found 1 day ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Washington Dulles Intl. IAD. Cheapest option available. Average driving time to city center is 36 minutes. Flights from $1,206
IAD
Washington Dulles Intl.
Cheapest
Average driving time to city center36 min
Flights from $1,206

Frequently asked questions

How much does a flight from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight from $539 or cheap return flight from $879 from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD)?
January is the most affordable month to fly from SIN to IAD. Traveling outside of peak seasons is often the key to finding a great deal.
What is the cheapest airline that flies from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from SIN to IAD. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD)?
You'll need to take a flight with a layover if you're traveling from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SIN to IAD?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on various factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD)?
Book a flight from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your plane ticket from SIN to IAD just before your trip is typically more expensive. But if you're flexible with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a SIN to IAD flight and hotel package?
Opting for a SIN to IAD flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our wide range of hotels and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Changi Airport (SIN) to Washington Dulles Intl. Airport (IAD)?
If you reserved your SIN to IAD flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Travel information

Origin airport
Changi
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, Air China, Air France, Alaska Airlines, All Nippon Airways, American Airlines, British Airways, Delta, Emirates, Etihad Airways, Japan Airlines, JetBlue Airways, KLM, Korean Air, Lufthansa, Qatar Airways, STARLUX Airlines, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$879
Distance
9649 mi

Book with confidence

Book with confidence

Singapore to Washington Flights

The cheapest times to fly from Singapore to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Singapore to Washington are during the month of January. You can find some of the cheapest flights from Singapore to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Singapore to Washington

Sunday is one of the best days to book for cheap flights from Singapore to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Singapore to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Singapore to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $539 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Singapore to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Singapore to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Singapore to Washington Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.