$560 Cheap Flights from Singapore (SIN) to Washington (IAD)

View $560 flight on Mon, Nov 16, 2026Opens in a new window

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

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Cheap Flights from Singapore to Washington (SIN-IAD)

Prices were available within the past 7 days and start at $560 for one-way flights and $830 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Fri, Oct 23 - Fri, Nov 13
SIN
Singapore
IAD
Washington
$830 Roundtrip, found 2 days ago
$830
Roundtrip
found 2 days ago
Select Air China flight, departing Fri, Oct 23 from Singapore to Washington, returning Fri, Nov 13, priced at $830 found 2 days ago
STARLUX Airlines
Mon, Nov 2 - Mon, Nov 23
SIN
Singapore
IAD
Washington
$1,250 Roundtrip, found 2 days ago
$1,250
Roundtrip
found 2 days ago
Select STARLUX Airlines flight, departing Mon, Nov 2 from Singapore to Washington, returning Mon, Nov 23, priced at $1,250 found 2 days ago
Saudia
Sat, Oct 17 - Sat, Nov 7
SIN
Singapore
IAD
Washington
$1,284 Roundtrip, found 23 hours ago
$1,284
Roundtrip
found 23 hours ago
Select Saudia flight, departing Sat, Oct 17 from Singapore to Washington, returning Sat, Nov 7, priced at $1,284 found 23 hours ago
United
Tue, Oct 27 - Tue, Nov 17
SIN
Singapore
IAD
Washington
$1,323 Roundtrip, found 2 days ago
$1,323
Roundtrip
found 2 days ago
Select United flight, departing Tue, Oct 27 from Singapore to Washington, returning Tue, Nov 17, priced at $1,323 found 2 days ago
Emirates
Tue, May 12 - Sun, May 17
SIN
Singapore
IAD
Washington
$1,390 Roundtrip, found 4 days ago
$1,390
Roundtrip
found 4 days ago
Select Emirates flight, departing Tue, May 12 from Singapore to Washington, returning Sun, May 17, priced at $1,390 found 4 days ago
EVA Airways
Sun, Jul 5 - Sun, Jul 26
SIN
Singapore
IAD
Washington
$1,442 Roundtrip, found 2 hours ago
$1,442
Roundtrip
found 2 hours ago
Select EVA Airways flight, departing Sun, Jul 5 from Singapore to Washington, returning Sun, Jul 26, priced at $1,442 found 2 hours ago
Lufthansa
Wed, Feb 10 - Wed, Feb 17
SIN
Singapore
IAD
Washington
$1,478 Roundtrip, found 7 hours ago
$1,478
Roundtrip
found 7 hours ago
Select Lufthansa flight, departing Wed, Feb 10 from Singapore to Washington, returning Wed, Feb 17, priced at $1,478 found 7 hours ago
Qatar Airways
Sat, May 9 - Sat, May 30
SIN
Singapore
IAD
Washington
$1,510 Roundtrip, found 5 hours ago
$1,510
Roundtrip
found 5 hours ago
Select Qatar Airways flight, departing Sat, May 9 from Singapore to Washington, returning Sat, May 30, priced at $1,510 found 5 hours ago
Korean Air
Wed, Mar 10 - Wed, Mar 17
SIN
Singapore
IAD
Washington
$1,526 Roundtrip, found 6 hours ago
$1,526
Roundtrip
found 6 hours ago
Select Korean Air flight, departing Wed, Mar 10 from Singapore to Washington, returning Wed, Mar 17, priced at $1,526 found 6 hours ago
Swiss International Air Lines
Wed, Feb 10 - Wed, Feb 17
SIN
Singapore
IAD
Washington
$1,529 Roundtrip, found 7 hours ago
$1,529
Roundtrip
found 7 hours ago
Select Swiss International Air Lines flight, departing Wed, Feb 10 from Singapore to Washington, returning Wed, Feb 17, priced at $1,529 found 7 hours ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $2,193
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $2,193

Frequently asked questions

How much does a flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) cost?
You can find cheap one-way flights from $560 and cheap return flights from $830 Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) with Expedia. One-way flights usually range from $836 to $6000, and return flights typically cost between $1186 and $9956. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
The cheapest month to fly from SIN to IAD is October when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
Enter SIN to IAD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
Starlux Airlines is one of the cheapest airlines offering connecting flights from Singapore (SIN) to Washington, DC (IAD), with round-trip tickets starting from around $1,447 with a layover in Taoyuan Intl. (TPE). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
To find a cheap flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
The earliest flight from Singapore (SIN) to Washington, DC (IAD) typically departs at around 12:05 AM, operated by Swiss International Air Lines. This is a seasonal service active in January, February, October, and November. An early departure like this can help you maximize your time in Washington. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
The most popular departure times for flights from Changi Airport (SIN) to Washington Dulles International Airport (IAD) are in the late evening, from 9pm to midnight. About 44% of passengers prefer this time window. Many major carriers, including United Airlines, Emirates, and All Nippon Airways, operate flights during this time, making it a good option for travelers looking to depart after a full day.
How long does it take to fly from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
A flight from SIN to IAD with a layover takes around 23 hours 50 minutes, with the route covering approximately 9,651 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
Business class seats are offered on the SIN to IAD route. Airlines that offer business class service on this route include:

  • Swiss International Air Lines
  • Malaysia Airlines
  • Singapore Airlines
  • Etihad Airways
  • Lufthansa
  • Korean Air
  • Emirates
  • Batik Air
  • All Nippon Airways
  • Turkish Airlines

First class cabins are available on:

  • Swiss International Air Lines
  • Singapore Airlines
  • Emirates
  • British Airways
  • Lufthansa

How do I earn miles on a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight with Expedia?
It's easy to earn miles on a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Washington from Changi (SIN)?
From Changi (SIN), you can fly into Ronald Reagan Washington National (DCA) and Washington Dulles Intl. (IAD) in Washington. Some flights may connect through major hubs like Hong Kong Intl. (HKG), Vancouver Intl. (YVR), Haneda (HND) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) at the last minute?
Typically, booking a last minute flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package?
Securing a Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) Fairfax County Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.)?
If you booked your Singapore (SIN-Changi) to Washington, DC (IAD-Washington Dulles Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Changi
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, Air China, Air France, Alaska Airlines, All Nippon Airways, American Airlines, British Airways, Delta, EVA Airways, Emirates, Etihad Airways, JetBlue Airways, KLM, Korean Air, Lufthansa, Qatar Airways, STARLUX Airlines, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$829
Distance
9649 mi

*Flight schedules are subject to change.

*Available to One Key members.

 

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