€492 Cheap Flights Washington to Singapore (IAD-SIN)

View €492 flight on Wed, 8 Oct 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 €492 for one-way flights and €1,088 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,088 Return, found 5 days ago
€1,088
Return
found 5 days ago
Select United flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,088 found 5 days ago
United
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,131 Return, found 5 days ago
€1,131
Return
found 5 days ago
Select United flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,131 found 5 days ago
United
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,267 Return, found 5 days ago
€1,267
Return
found 5 days ago
Select United flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,267 found 5 days ago
United
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,308 Return, found 5 days ago
€1,308
Return
found 5 days ago
Select United flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,308 found 5 days ago
Qatar Airways
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,316 Return, found 5 days ago
€1,316
Return
found 5 days ago
Select Qatar Airways flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,316 found 5 days ago
United
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,318 Return, found 5 days ago
€1,318
Return
found 5 days ago
Select United flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,318 found 5 days ago
United
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,326 Return, found 5 days ago
€1,326
Return
found 5 days ago
Select United flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,326 found 5 days ago
JetBlue Airways
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,427 Return, found 5 days ago
€1,427
Return
found 5 days ago
Select JetBlue Airways flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,427 found 5 days ago
Delta
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,474 Return, found 5 days ago
€1,474
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,474 found 5 days ago
Korean Air
Thu, 4 Dec - Sat, 6 Dec
IAD
Washington
SIN
Singapore
€1,475 Return, found 5 days ago
€1,475
Return
found 5 days ago
Select Korean Air flight, departing Thu, 4 Dec from Washington to Singapore, returning Sat, 6 Dec, priced at €1,475 found 5 days ago

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

September is typically the cheapest month to fly

From €688 - €1,004 per traveller.

Graph displaying average flight prices per month

Washington to Singapore route information
Origin airport
Washington Dulles Intl.
Destination airport
Changi
Return price
€1,088
Distance
15439 km

Perfect flights from Washington to Singapore

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Washington to Singapore. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Washington Dulles Intl. to Changi ticket options cater to your travel preferences, with incredible one-way fares from €492 and roundtrip prices from €1,088. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Changi and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Singapore.

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 €1,088. 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.

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