₩624,400 Cheap Flights from Washington (IAD) to Singapore (SIN)

View ₩624,400 flight on Sun, Sep 21, 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 ₩624,400 for one-way flights and ₩1,242,800 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Sun, Sep 21 - Sun, Sep 28
IAD
Washington
SIN
Singapore
₩1,242,800 Roundtrip, found 4 days ago
₩1,242,800
Roundtrip
found 4 days ago
Select Etihad Airways flight, departing Sun, Sep 21 from Washington to Singapore, returning Sun, Sep 28, priced at ₩1,242,800 found 4 days ago
Turkish Airlines
Sun, Sep 21 - Sun, Sep 28
IAD
Washington
SIN
Singapore
₩1,556,900 Roundtrip, found 4 days ago
₩1,556,900
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Sun, Sep 21 from Washington to Singapore, returning Sun, Sep 28, priced at ₩1,556,900 found 4 days ago
Turkish Airlines
Sun, Sep 21 - Sun, Sep 28
IAD
Washington
SIN
Singapore
₩1,591,600 Roundtrip, found 4 days ago
₩1,591,600
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Sun, Sep 21 from Washington to Singapore, returning Sun, Sep 28, priced at ₩1,591,600 found 4 days ago
Turkish Airlines
Sun, Sep 21 - Sun, Sep 28
IAD
Washington
SIN
Singapore
₩1,724,900 Roundtrip, found 4 days ago
₩1,724,900
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Sun, Sep 21 from Washington to Singapore, returning Sun, Sep 28, priced at ₩1,724,900 found 4 days ago
Turkish Airlines
Mon, Dec 29 - Wed, Jan 14
IAD
Washington
SIN
Singapore
₩1,728,200 Roundtrip, found 6 days ago
₩1,728,200
Roundtrip
found 6 days ago
Select Turkish Airlines flight, departing Mon, Dec 29 from Washington to Singapore, returning Wed, Jan 14, priced at ₩1,728,200 found 6 days ago
Etihad Airways
Sun, Sep 21 - Sun, Sep 28
IAD
Washington
SIN
Singapore
₩1,737,100 Roundtrip, found 4 days ago
₩1,737,100
Roundtrip
found 4 days ago
Select Etihad Airways flight, departing Sun, Sep 21 from Washington to Singapore, returning Sun, Sep 28, priced at ₩1,737,100 found 4 days ago
United
Sun, Sep 21 - Sun, Sep 28
IAD
Washington
SIN
Singapore
₩1,756,900 Roundtrip, found 4 days ago
₩1,756,900
Roundtrip
found 4 days ago
Select United flight, departing Sun, Sep 21 from Washington to Singapore, returning Sun, Sep 28, priced at ₩1,756,900 found 4 days ago
American Airlines
Sun, Sep 21 - Sun, Sep 28
IAD
Washington
SIN
Singapore
₩1,790,100 Roundtrip, found 4 days ago
₩1,790,100
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Sep 21 from Washington to Singapore, returning Sun, Sep 28, priced at ₩1,790,100 found 4 days ago
United
Sun, Sep 21 - Sun, Sep 28
IAD
Washington
SIN
Singapore
₩1,826,300 Roundtrip, found 4 days ago
₩1,826,300
Roundtrip
found 4 days ago
Select United flight, departing Sun, Sep 21 from Washington to Singapore, returning Sun, Sep 28, priced at ₩1,826,300 found 4 days ago
Qatar Airways
Sun, Sep 21 - Sun, Sep 28
IAD
Washington
SIN
Singapore
₩1,843,000 Roundtrip, found 4 days ago
₩1,843,000
Roundtrip
found 4 days ago
Select Qatar Airways flight, departing Sun, Sep 21 from Washington to Singapore, returning Sun, Sep 28, priced at ₩1,843,000 found 4 days ago

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

September is typically the cheapest month to fly

From ₩971,168 - ₩1,553,035 per traveler.

Graph displaying average flight prices per month

Flights from Washington (IAD) to Singapore (SIN)
Origin airport
Washington Dulles Intl.
Destination airport
Changi
Roundtrip price
₩1,242,800
Distance
15439 km

Chantilly to Singapore Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Chantilly to Singapore will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Singapore.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with IAD to SIN flights that won’t make your bank account wince. Ready to temporarily leave behind Chantilly for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SIN with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

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 ₩1,242,800. 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 canceled 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 kilometers, 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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