S$633 Cheap Flights from Washington to Singapore

View S$633 flight on Tue, 4 Nov, 2025Opens in a new window

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

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Cheap Flights from Washington to Singapore (IAD-SIN)

Prices were available within the past 7 days and start at S$633 for one-way flights and S$1,182 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Mon, 25 Aug - Wed, 1 Oct
IAD
Washington
SIN
Singapore
S$1,182 Return, found 2 days ago
S$1,182
Return
found 2 days ago
Select Etihad Airways flight, departing Mon, 25 Aug from Washington to Singapore, returning Wed, 1 Oct, priced at S$1,182 found 2 days ago
Air India
Mon, 18 Aug - Wed, 3 Sep
IAD
Washington
SIN
Singapore
S$1,193 Return, found 4 days ago
S$1,193
Return
found 4 days ago
Select Air India flight, departing Mon, 18 Aug from Washington to Singapore, returning Wed, 3 Sep, priced at S$1,193 found 4 days ago
Korean Air
Thu, 28 Aug - Thu, 4 Sep
IAD
Washington
SIN
Singapore
S$1,273 Return, found 3 days ago
S$1,273
Return
found 3 days ago
Select Korean Air flight, departing Thu, 28 Aug from Washington to Singapore, returning Thu, 4 Sep, priced at S$1,273 found 3 days ago
Air Canada
Fri, 22 May - Sun, 31 May
IAD
Washington
SIN
Singapore
S$1,320 Return, found 2 days ago
S$1,320
Return
found 2 days ago
Select Air Canada flight, departing Fri, 22 May from Washington to Singapore, returning Sun, 31 May, priced at S$1,320 found 2 days ago
Turkish Airlines
Wed, 27 Aug - Thu, 18 Sep
IAD
Washington
SIN
Singapore
S$1,524 Return, found 8 hours ago
S$1,524
Return
found 8 hours ago
Select Turkish Airlines flight, departing Wed, 27 Aug from Washington to Singapore, returning Thu, 18 Sep, priced at S$1,524 found 8 hours ago
United
Wed, 27 Aug - Thu, 18 Sep
IAD
Washington
SIN
Singapore
S$1,561 Return, found 8 hours ago
S$1,561
Return
found 8 hours ago
Select United flight, departing Wed, 27 Aug from Washington to Singapore, returning Thu, 18 Sep, priced at S$1,561 found 8 hours ago
Japan Airlines
Tue, 23 Sep - Tue, 7 Oct
IAD
Washington
SIN
Singapore
S$1,610 Return, found 3 days ago
S$1,610
Return
found 3 days ago
Select Japan Airlines flight, departing Tue, 23 Sep from Washington to Singapore, returning Tue, 7 Oct, priced at S$1,610 found 3 days ago
All Nippon Airways
Thu, 9 Oct - Sun, 26 Oct
IAD
Washington
SIN
Singapore
S$1,616 Return, found 3 days ago
S$1,616
Return
found 3 days ago
Select All Nippon Airways flight, departing Thu, 9 Oct from Washington to Singapore, returning Sun, 26 Oct, priced at S$1,616 found 3 days ago
American Airlines
Thu, 9 Oct - Sun, 26 Oct
IAD
Washington
SIN
Singapore
S$1,651 Return, found 3 days ago
S$1,651
Return
found 3 days ago
Select American Airlines flight, departing Thu, 9 Oct from Washington to Singapore, returning Sun, 26 Oct, priced at S$1,651 found 3 days ago
Qatar Airways
Wed, 27 Aug - Thu, 18 Sep
IAD
Washington
SIN
Singapore
S$1,654 Return, found 8 hours ago
S$1,654
Return
found 8 hours ago
Select Qatar Airways flight, departing Wed, 27 Aug from Washington to Singapore, returning Thu, 18 Sep, priced at S$1,654 found 8 hours ago

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

September is typically the cheapest month to fly

From S$901 - S$1,497 per traveller.

Graph displaying average flight prices per month

Washington to Singapore route information
Origin airport
Washington Dulles Intl.
Destination airport
Changi
Return price
S$1,181
Distance
15439 km

Perfect flights from Washington to Singapore

Your Journey from Washington to Singapore

Start your unforgettable journey with Expedia. Our broad selection of flights from Washington to Singapore caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Air India, Air Canada, Turkish Airlines, Korean Air, Etihad Airways, Cathay Pacific, United, Delta, Qatar Airways, American Airlines, Japan Airlines, All Nippon Airways. Our selection of flights from Washington Dulles Intl. to Changi caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Washington to Singapore Flights

Experience the joy of finding cheap flights from Washington Dulles Intl. to Changi that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$633 and roundtrip prices from S$1,182*.
 

Pre-Flight Essentials

Ensure a smooth journey from Washington to Singapore with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Singapore

Picture yourself stepping off the plane in Singapore and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Washington to Singapore Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Washington to Singapore.
 

Beyond the Flight – Exploring Singapore

With Expedia, your adventure extends beyond the flight. Explore Singapore at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Washington to Singapore with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Washington to Singapore with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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 S$1,182. 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

*Available to Expedia members.