$516 Cheap Flights from Washington (IAD) to Singapore (SIN)

View $516 flight on Fri, Apr 10, 2026Opens 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 $516 for one-way flights and $947 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Fri, Apr 24 - Sun, May 3
IAD
Washington
SIN
Singapore
$947 Roundtrip, just found
$947
Roundtrip
just found
Select Etihad Airways flight, departing Fri, Apr 24 from Washington to Singapore, returning Sun, May 3, priced at $947 just found
Qatar Airways
Thu, Apr 16 - Fri, Apr 24
IAD
Washington
SIN
Singapore
$1,036 Roundtrip, just found
$1,036
Roundtrip
just found
Select Qatar Airways flight, departing Thu, Apr 16 from Washington to Singapore, returning Fri, Apr 24, priced at $1,036 just found
EVA Airways
Tue, Sep 15 - Tue, Sep 29
IAD
Washington
SIN
Singapore
$1,097 Roundtrip, found 6 days ago
$1,097
Roundtrip
found 6 days ago
Select EVA Airways flight, departing Tue, Sep 15 from Washington to Singapore, returning Tue, Sep 29, priced at $1,097 found 6 days ago
Air Canada
Sun, Sep 6 - Tue, Sep 15
IAD
Washington
SIN
Singapore
$1,099 Roundtrip, found 1 day ago
$1,099
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sun, Sep 6 from Washington to Singapore, returning Tue, Sep 15, priced at $1,099 found 1 day ago
Turkish Airlines
Mon, Apr 27 - Wed, May 6
IAD
Washington
SIN
Singapore
$1,111 Roundtrip, found 1 day ago
$1,111
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Mon, Apr 27 from Washington to Singapore, returning Wed, May 6, priced at $1,111 found 1 day ago
Saudia
Sat, Apr 25 - Tue, May 5
IAD
Washington
SIN
Singapore
$1,196 Roundtrip, found 5 days ago
$1,196
Roundtrip
found 5 days ago
Select Saudia flight, departing Sat, Apr 25 from Washington to Singapore, returning Tue, May 5, priced at $1,196 found 5 days ago
China Airlines
Tue, Aug 25 - Wed, Sep 30
IAD
Washington
SIN
Singapore
$1,275 Roundtrip, found 1 day ago
$1,275
Roundtrip
found 1 day ago
Select China Airlines flight, departing Tue, Aug 25 from Washington to Singapore, returning Wed, Sep 30, priced at $1,275 found 1 day ago
American Airlines
Wed, Apr 22 - Wed, Apr 29
IAD
Washington
SIN
Singapore
$1,279 Roundtrip, found 2 hours ago
$1,279
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Apr 22 from Washington to Singapore, returning Wed, Apr 29, priced at $1,279 found 2 hours ago
JetBlue Airways
Sat, Feb 13 - Thu, Feb 25
IAD
Washington
SIN
Singapore
$1,308 Roundtrip, found 2 days ago
$1,308
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Sat, Feb 13 from Washington to Singapore, returning Thu, Feb 25, priced at $1,308 found 2 days ago
Alaska Airlines
Mon, Aug 24 - Fri, Aug 28
IAD
Washington
SIN
Singapore
$1,389 Roundtrip, found 6 days ago
$1,389
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Aug 24 from Washington to Singapore, returning Fri, Aug 28, priced at $1,389 found 6 days ago

Alternative airports near Singapore

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

Select flight to Changi SIN. Cheapest option available. Average driving time to city center is 18 minutes. Flights from $1,036
SIN
Changi
Cheapest
Average driving time to city center18 min
Flights from $1,036

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

April is typically the cheapest month to fly

From $848 - $1,421 per traveler.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) cost?
You can find cheap one-way flights from $516 and cheap return flights from $947 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) with Expedia. One-way flights typically cost between $824 and $10008, and return flights often range between $1514 and $11776. 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 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) 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 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
April is the cheapest month to fly from Washington, DC (IAD) to Singapore (SIN), with average return fares around $1,121. This is about 19% lower than the average price throughout the year, as demand tends to be lower in spring. Other budget-friendly months include September and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
Enter IAD to SIN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
China Airlines is one of the cheapest airlines offering connecting flights from Washington, DC (IAD) to Singapore (SIN) with a layover in New York (JFK), starting from around $1,687. 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 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi), 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 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
For flights from Washington, DC (IAD) to Singapore (SIN), the best times to travel are in April and September. You can expect to pay around $1,121 for a return flight in these months. April is great for enjoying Singapore's warm weather before the summer heat, while September offers a quieter travel experience as the summer crowds dissipate.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
The earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) typically departs at around 6:00 AM, operated by Alaska Airlines. This seasonal service is available in June, providing an excellent opportunity for early travelers to enjoy their time in Singapore. An early departure allows you to maximize your time at your destination. 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 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
The most popular departure times for flights from Washington Dulles Intl. (IAD) to Changi (SIN) are in the late evening, from 9pm to midnight. This timing is popular because it allows travelers to maximize their day in Washington before heading to Singapore. About 22% of passengers prefer this time, with Turkish Airlines, United Airlines, and British Airways offering flights during this window.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
A flight from IAD to SIN 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 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
Business class seats are offered on the IAD to SIN route. Airlines that offer business class service on this route include:

  • British Airways
  • Lufthansa
  • United Airlines
  • Aer Lingus
  • Emirates
  • Swiss International Air Lines
  • Air Canada
  • Qatar Airways
  • Korean Air
  • Turkish Airlines

First class cabins are available on:

  • Emirates
  • Swiss International Air Lines
  • Lufthansa
  • British Airways
  • United Airlines
  • Delta Air Lines
  • Air France

How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) 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 Singapore from Washington Dulles Intl. (IAD)?
From Washington Dulles Intl. (IAD), you can fly into Changi (SIN) to reach Singapore. Some flights may connect through major hubs like O'Hare Intl. (ORD), Dubai Intl. (DXB), Pierre Elliott Trudeau Intl. (YUL) before reaching Singapore. 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 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) 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 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) Singapore 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 Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Singapore (SIN-Changi) 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
Washington Dulles Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air France, Alaska Airlines, All Nippon Airways, American Airlines, British Airways, Delta, EVA Airways, Emirates, Etihad Airways, JetBlue Airways, KLM, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, STARLUX Airlines, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$947
Distance
9649 mi

*Flight schedules are subject to change.

*Available to One Key members.

 

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