Cheap Flights from Singapore (SIN) to Washington (IAD) from HK$4,359~

Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip journey between Changi Airport and Dulles Intl. Airport was HK$9,775. Cheap tickets don't last forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.

This varies from airline to airline, as each has its own terms and conditions. Visit the Customer Service Portal, where there are instructions on how to cancel online.

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 Changi Airport (SIN) to IAD flights, you'll see a "no change fees" filter for you to select.

The distance is around 15,500 kilometers, so fill your carry-on luggage with all you need to make the long journey comfortable. Wondering what to take on board your Singapore to Chantilly flight? A sleep mask, earplugs and a neck pillow are among the essentials.

At present, no airlines offer direct flights from SIN to IAD. You'll have to book a flight with one or more stops. To score the best price and connections, lock in your airfare well in advance.

Flight prices from Singapore Airport to IAD are available up to a year prior to departure on Expedia. And although you may pick up a great last-minute deal, it's never something you can count on. Also, booking your flights ahead of time means you'll have more options — and you can avoid landing the dreaded middle seat! We're always updating our fares to bring you the best bargains, so keep checking in for all the latest specials.