S$631 Cheap Flights from Washington to Singapore

View S$631 flight on Tue, 3 Feb, 2026Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 40% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Washington to Singapore (IAD-SIN)

Prices were available within the past 7 days and start at S$631 for one-way flights and S$1,188 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air India
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
S$1,188 Return, found 1 day ago
S$1,188
Return
found 1 day ago
Select Air India flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at S$1,188 found 1 day ago
Etihad Airways
Wed, 10 Sep - Thu, 25 Sep
IAD
Washington
SIN
Singapore
S$1,223 Return, found 8 hours ago
S$1,223
Return
found 8 hours ago
Select Etihad Airways flight, departing Wed, 10 Sep from Washington to Singapore, returning Thu, 25 Sep, priced at S$1,223 found 8 hours ago
Korean Air
Wed, 10 Sep - Thu, 25 Sep
IAD
Washington
SIN
Singapore
S$1,317 Return, found 8 hours ago
S$1,317
Return
found 8 hours ago
Select Korean Air flight, departing Wed, 10 Sep from Washington to Singapore, returning Thu, 25 Sep, priced at S$1,317 found 8 hours ago
Turkish Airlines
Mon, 18 Aug - Wed, 17 Sep
IAD
Washington
SIN
Singapore
S$1,485 Return, found 4 days ago
S$1,485
Return
found 4 days ago
Select Turkish Airlines flight, departing Mon, 18 Aug from Washington to Singapore, returning Wed, 17 Sep, priced at S$1,485 found 4 days ago
Singapore Airlines
Mon, 18 Aug - Thu, 18 Sep
IAD
Washington
SIN
Singapore
S$1,495 Return, found 4 days ago
S$1,495
Return
found 4 days ago
Select Singapore Airlines flight, departing Mon, 18 Aug from Washington to Singapore, returning Thu, 18 Sep, priced at S$1,495 found 4 days ago
United
Wed, 10 Sep - Thu, 25 Sep
IAD
Washington
SIN
Singapore
S$1,551 Return, found 8 hours ago
S$1,551
Return
found 8 hours ago
Select United flight, departing Wed, 10 Sep from Washington to Singapore, returning Thu, 25 Sep, priced at S$1,551 found 8 hours ago
Delta
Mon, 18 Aug - Wed, 17 Sep
IAD
Washington
SIN
Singapore
S$1,586 Return, found 4 days ago
S$1,586
Return
found 4 days ago
Select Delta flight, departing Mon, 18 Aug from Washington to Singapore, returning Wed, 17 Sep, priced at S$1,586 found 4 days ago
Qatar Airways
Wed, 10 Sep - Thu, 25 Sep
IAD
Washington
SIN
Singapore
S$1,643 Return, found 8 hours ago
S$1,643
Return
found 8 hours ago
Select Qatar Airways flight, departing Wed, 10 Sep from Washington to Singapore, returning Thu, 25 Sep, priced at S$1,643 found 8 hours ago
American Airlines
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
S$1,651 Return, found 1 day ago
S$1,651
Return
found 1 day ago
Select American Airlines flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at S$1,651 found 1 day ago
Air China
Fri, 7 Nov - Mon, 24 Nov
IAD
Washington
SIN
Singapore
S$1,672 Return, found 21 hours ago
S$1,672
Return
found 21 hours ago
Select Air China flight, departing Fri, 7 Nov from Washington to Singapore, returning Mon, 24 Nov, priced at S$1,672 found 21 hours ago

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

September is typically the cheapest month to fly

From S$897 - S$1,473 per traveller.

Graph displaying average flight prices per month

Washington to Singapore route information
Origin airport
Washington Dulles Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air France, Air India, All Nippon Airways, American Airlines, British Airways, Delta, Emirates, Etihad Airways, KLM, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, United
Return price
S$1,188
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, Turkish Airlines, Etihad Airways, Korean Air, Qatar Airways, American Airlines, Cathay Pacific, Air Canada, United, Delta, Singapore Airlines, Air China. 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$631 and roundtrip prices from S$1,188*.
 

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$1,188. 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.