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$541 Cheap Flights from Washington (IAD) to Singapore (SIN)

View $541 flight on Thu, Aug 27, 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 $541 for one-way flights and $923 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Mon, Aug 24 - Fri, Sep 4
IAD
Washington
SIN
Singapore
$923 Roundtrip, found 4 days ago
$923
Roundtrip
found 4 days ago
Select Etihad Airways flight, departing Mon, Aug 24 from Washington to Singapore, returning Fri, Sep 4, priced at $923 found 4 days ago
Turkish Airlines
Sun, Nov 8 - Fri, Nov 13
IAD
Washington
SIN
Singapore
$1,017 Roundtrip, found 1 day ago
$1,017
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Sun, Nov 8 from Washington to Singapore, returning Fri, Nov 13, priced at $1,017 found 1 day ago
Air Canada
Tue, Aug 4 - Tue, Aug 18
IAD
Washington
SIN
Singapore
$1,107 Roundtrip, found 23 hours ago
$1,107
Roundtrip
found 23 hours ago
Select Air Canada flight, departing Tue, Aug 4 from Washington to Singapore, returning Tue, Aug 18, priced at $1,107 found 23 hours ago
Korean Air
Sun, Aug 30 - Sun, Sep 20
IAD
Washington
SIN
Singapore
$1,114 Roundtrip, found 6 hours ago
$1,114
Roundtrip
found 6 hours ago
Select Korean Air flight, departing Sun, Aug 30 from Washington to Singapore, returning Sun, Sep 20, priced at $1,114 found 6 hours ago
Delta
Tue, Feb 16 - Thu, Feb 25
IAD
Washington
SIN
Singapore
$1,126 Roundtrip, found 1 hour ago
$1,126
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Feb 16 from Washington to Singapore, returning Thu, Feb 25, priced at $1,126 found 1 hour ago
Lufthansa
Mon, Feb 8 - Wed, Feb 24
IAD
Washington
SIN
Singapore
$1,147 Roundtrip, found 1 day ago
$1,147
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Mon, Feb 8 from Washington to Singapore, returning Wed, Feb 24, priced at $1,147 found 1 day ago
Qatar Airways
Sun, Aug 23 - Mon, Sep 7
IAD
Washington
SIN
Singapore
$1,172 Roundtrip, found 8 hours ago
$1,172
Roundtrip
found 8 hours ago
Select Qatar Airways flight, departing Sun, Aug 23 from Washington to Singapore, returning Mon, Sep 7, priced at $1,172 found 8 hours ago
EVA Airways
Thu, Sep 17 - Sun, Sep 20
IAD
Washington
SIN
Singapore
$1,185 Roundtrip, found 8 hours ago
$1,185
Roundtrip
found 8 hours ago
Select EVA Airways flight, departing Thu, Sep 17 from Washington to Singapore, returning Sun, Sep 20, priced at $1,185 found 8 hours ago
Swiss International Air Lines
Wed, Nov 11 - Thu, Nov 19
IAD
Washington
SIN
Singapore
$1,203 Roundtrip, just found
$1,203
Roundtrip
just found
Select Swiss International Air Lines flight, departing Wed, Nov 11 from Washington to Singapore, returning Thu, Nov 19, priced at $1,203 just found
Austrian Airlines
Tue, Nov 24 - Mon, Dec 14
IAD
Washington
SIN
Singapore
$1,204 Roundtrip, found 14 hours ago
$1,204
Roundtrip
found 14 hours ago
Select Austrian Airlines flight, departing Tue, Nov 24 from Washington to Singapore, returning Mon, Dec 14, priced at $1,204 found 14 hours 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 $1,454
SIN
Changi
Cheapest
Average driving time to city center18 min
Flights from $1,454

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

April is typically the cheapest month to fly

From $918 - $1,171 per traveler.

What you need to know for your flight from Washington Dulles Intl. to Changi

Washington (IAD) to Singapore (SIN) at a glance

Travel from Washington Dulles International Airport (IAD) to Singapore’s Changi Airport (SIN) with a selection of airlines catering to this long-haul journey. Whether you’re looking for full-service options or seeking cheap flights from Washington, you can easily compare fares and schedules to discover the itinerary that aligns with your budget and travel plans. Get ready to explore the iconic sights and vibrant neighborhoods of Singapore as you plan your trip from DC to Singapore.

  • Fastest flight duration: around 20h 45m in-flight, plus roughly 2h 15m layover with one stop
  • Route distance: roughly 9,700 miles (15,610 km)
  • Flights per week: around 9 departures on average
  • Typical fares (one-way): economy tickets often range from $480–$1455, depending on seasonality and how far ahead you book

Flights from Washington Dulles International Airport (IAD) to Changi Airport (SIN)

Here are the top airlines favored by travelers flying from Washington to Singapore, particularly for one-stop and multi-stop journeys. Common layovers include Istanbul Airport (IST) with about a 2-hour 15-minute stop, Hamad International Airport (DOH) offering around a 3-hour layover, and San Francisco International Airport (SFO) with a 1-hour 45-minute break. These options allow you to tailor your itinerary by balancing price, total travel time, and cabin class for the best travel experience.

  • Turkish Airlines: This full-service airline provides a one-stop travel experience, with one-way ticket prices generally falling between $480 and $3405. It represents around 35% of the flights on this route, featuring an in-flight duration of 20 hours and 45 minutes, with an overall travel time close to 23 hours and 45 minutes, including layover.
  • Qatar Airways: As a full-service carrier, Qatar Airways offers one-stop flights, with one-way fares typically priced from $525 to $1100. It accounts for about 18% of the departures on this route, boasting an in-flight time of 20 hours and 45 minutes and a total journey duration of approximately 23 hours and 45 minutes, layover included.
  • United: This full-service airline also provides one-stop options, with one-way fares ranging from $585 to $1180. United makes up roughly 16% of the flights on this route and features a flight time of 20 hours and 45 minutes, leading to a total travel time of around 23 hours and 45 minutes, factoring in the layover.
  • Etihad Airways: Another full-service airline, Etihad offers one-stop services with one-way fares that typically range from $510 to $3625. It represents about 10% of the departures for this route, with an in-flight duration of 20 hours and 45 minutes and an overall journey time estimated at 23 hours and 45 minutes, including layover.
  • JetBlue Airways: As a low-cost carrier, JetBlue provides one-stop service with one-way fares usually between $560 and $1455. This airline accounts for approximately 6% of the departures on this route, with an in-flight time of 20 hours and 45 minutes and a total travel duration of about 23 hours and 45 minutes, including layover.

Travelers flying from Washington to Singapore have the option to upgrade their flight experience, with top business class airlines including Turkish Airlines, Etihad Airways, and Lufthansa offering exceptional service.

Best time to fly from Washington (IAD) to Singapore (SIN)

The most popular months for travelers flying from Washington to Singapore are January, July, and December, when peak temperatures in Singapore reach up to 82.4°F in July. If you prefer quieter travel, consider August, the least busy time to visit with temperatures around 82.2°F and typically the lowest average one-way fare (around $605). Flight availability peaks in July, with approximately 11 flights per week, making it easier to find convenient departure times.

  • Cheapest time to fly: August usually offers good deals with average one-way fare around $605, roughly 43% cheaper than the yearly average.
  • Most flight options: July has the highest number of flights from Washington to Singapore, with approximately 11 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January79.7°F (26.5°C)High9$943
February80.2°F (26.8°C)Average10$1013
March81.3°F (27.4°C)Average10$915
April82.6°F (28.1°C)Average8$1782
May83.3°F (28.5°C)Average10$1148
June82.9°F (28.3°C)Average8$1429
July82.4°F (28.0°C)High11$868
August82.2°F (27.9°C)Low7$605
September82.0°F (27.8°C)Low9$962
October82.2°F (27.9°C)Low8$968
November81.3°F (27.4°C)Average8$1019
December80.2°F (26.8°C)High10$1100

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Washington (IAD) to Singapore (SIN)

  • Washington to Singapore (DCA-SIN): Ronald Reagan Washington National Airport (DCA) is located approximately 23 miles from Washington Dulles International Airport (IAD).

How to find the best prices for flights from Washington (IAD) to Singapore (SIN)

Getting some of the best deals on flights from Washington to Singapore is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking at least two months in advance, which aligns with when most travelers make their reservations. Afternoon departures from 12 PM to 6 PM tend to be less expensive, although evening flights from 6 PM to 12 AM are the most popular. Additionally, flying on Wednesday generally results in lower prices, while Friday is the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Singapore hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Changi Airport from Washington Dulles International Airport

Singapore welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Washington Dulles International Airport is roughly a 40-minute drive (covering about 29 miles) from central Washington. Here's how to reach Singapore efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Singapore, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from Changi Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Changi Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Changi Airport, F Station, a metro station, is just a short 0.1-mile walk away, offering convenient access to public transport, while Tanah Merah Ferry Terminal, a ferry terminal, is located about 4.9 miles away by car.

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 $541 and cheap return flights from $923 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
$923
Distance
9649 mi

Book with confidence

Washington to Singapore Flights

The cheapest times to fly from Washington to Singapore

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Singapore are during the month of August. You can find some of the cheapest flights from Washington to Singapore with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Singapore

Sunday is one of the best days to book for cheap flights from Washington to Singapore: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Singapore

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Singapore in 2026. You can also book with separate airlines for your outbound and return journeys, from $541 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Singapore flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Singapore airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Singapore Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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