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

View AU$769 flight on Tue, 23 Sep. 2025Opens in a new window

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

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

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.

Etihad Airways
Tue, 9 Sep. - Tue, 16 Sep.
IAD
Washington
SIN
Singapore
AU$1,356 Return, found 5 days ago
AU$1,356
Return
found 5 days ago
Select Etihad Airways flight, departing Tue, 9 Sep. from Washington to Singapore, returning Tue, 16 Sep., priced at AU$1,356 found 5 days ago
Air India
Fri, 12 Sep. - Fri, 19 Sep.
IAD
Washington
SIN
Singapore
AU$1,465 Return, found 2 days ago
AU$1,465
Return
found 2 days ago
Select Air India flight, departing Fri, 12 Sep. from Washington to Singapore, returning Fri, 19 Sep., priced at AU$1,465 found 2 days ago
Turkish Airlines
Tue, 9 Sep. - Tue, 16 Sep.
IAD
Washington
SIN
Singapore
AU$1,578 Return, found 5 days ago
AU$1,578
Return
found 5 days ago
Select Turkish Airlines flight, departing Tue, 9 Sep. from Washington to Singapore, returning Tue, 16 Sep., priced at AU$1,578 found 5 days ago
Air Canada
Fri, 31 Oct. - Sat, 8 Nov.
IAD
Washington
SIN
Singapore
AU$1,610 Return, found 11 hours ago
AU$1,610
Return
found 11 hours ago
Select Air Canada flight, departing Fri, 31 Oct. from Washington to Singapore, returning Sat, 8 Nov., priced at AU$1,610 found 11 hours ago
United
Tue, 9 Sep. - Tue, 16 Sep.
IAD
Washington
SIN
Singapore
AU$1,842 Return, found 5 days ago
AU$1,842
Return
found 5 days ago
Select United flight, departing Tue, 9 Sep. from Washington to Singapore, returning Tue, 16 Sep., priced at AU$1,842 found 5 days ago
Korean Air
Tue, 9 Sep. - Tue, 16 Sep.
IAD
Washington
SIN
Singapore
AU$1,937 Return, found 5 days ago
AU$1,937
Return
found 5 days ago
Select Korean Air flight, departing Tue, 9 Sep. from Washington to Singapore, returning Tue, 16 Sep., priced at AU$1,937 found 5 days ago
Qatar Airways
Tue, 9 Sep. - Tue, 16 Sep.
IAD
Washington
SIN
Singapore
AU$1,950 Return, found 5 days ago
AU$1,950
Return
found 5 days ago
Select Qatar Airways flight, departing Tue, 9 Sep. from Washington to Singapore, returning Tue, 16 Sep., priced at AU$1,950 found 5 days ago
Alaska Airlines
Fri, 24 Oct. - Fri, 31 Oct.
IAD
Washington
SIN
Singapore
AU$1,951 Return, found 2 days ago
AU$1,951
Return
found 2 days ago
Select Alaska Airlines flight, departing Fri, 24 Oct. from Washington to Singapore, returning Fri, 31 Oct., priced at AU$1,951 found 2 days ago
American Airlines
Tue, 9 Sep. - Tue, 16 Sep.
IAD
Washington
SIN
Singapore
AU$1,953 Return, found 5 days ago
AU$1,953
Return
found 5 days ago
Select American Airlines flight, departing Tue, 9 Sep. from Washington to Singapore, returning Tue, 16 Sep., priced at AU$1,953 found 5 days ago
Air China
Fri, 12 Sep. - Fri, 19 Sep.
IAD
Washington
SIN
Singapore
AU$2,072 Return, found 2 days ago
AU$2,072
Return
found 2 days ago
Select Air China flight, departing Fri, 12 Sep. from Washington to Singapore, returning Fri, 19 Sep., priced at AU$2,072 found 2 days ago

Find the cheapest month to fly from Washington (IAD) to Singapore (SIN)

September is typically the cheapest month to fly

From AU$1,076 - AU$1,742 per traveller.

Graph displaying average flight prices per month

Flight from Washington to Singapore route information
Origin airport
Washington Dulles Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air France, Air India, Alaska Airlines, All Nippon Airways, American Airlines, British Airways, Delta, Emirates, Ethiopian Airlines, Etihad Airways, KLM, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, United
Return price
AU$1,356
Distance
15439 km

Your quick guide to flights from Washington to Singapore

Pick up great flights from Washington to Singapore

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Washington to Singapore. 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 Washington to Singapore that take around hours.

Find cheap flights from Washington to Singapore

From the great flight deals with prices currently ranging from AU$1,356 to AU$2,072, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Washington to Singapore 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 Singapore is normally in September.

Reasons to book your flight from Washington to Singapore 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 Washington to Singapore 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 Singapore right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from IAD to Singapore Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight from IAD to SIN was AU$1,356. Fares this cheap don't last forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Washington Dulles Intl. Airport (IAD) to SIN?
Most flights can be cancelled online, but every air carrier has its own set of terms and conditions. If you do need to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from Dulles Intl. Airport to Singapore Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Washington Dulles Intl. Airport (IAD) to Changi Airport (SIN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to Changi Airport (SIN)?
Chantilly to Singapore is around 15 500 kilometres, so be prepared to spend a while in the air. Don't forget to pack all the essentials, from your eye mask to your earphones. Throw in a few snacks to munch on throughout your flight too.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Singapore Airport?
You won't find any airlines flying directly between Dulles Intl. Airport and Changi Airport (SIN), so be prepared to make at least one stop on your journey. A layover can be a welcome way to break up a trip!
Are Dulles Intl. Airport to SIN flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Washington Dulles Intl. Airport (IAD) to Singapore Airport at the last minute could be your ticket to an awesome deal. However, you might miss out on a flight altogether! If you'd rather not take any chances, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time.

Explore a world of travel with Expedia

Washington Airports

Baltimore

Baltimore Washington Intl. Thurgood Marshall to Singapore
AU$1,453.70

Washington

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