Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. to Singapore from $455

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Singapore departing on 4/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from Washington, D.C. to Singapore

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Washington, D.C. to Singapore.
11:00 pm - 9:55 pmIAD-SIN
34h 55m1 stop
11:25 pm - 7:30 pmSIN-IAD
32h 05m1 stop
$785Air China
Find Deal
Sat, Apr 5 - Fri, Apr 11
9:40 pm - 8:30 amIAD-SIN
22h 50m1 stop
3:45 am - 3:45 pmSIN-IAD
24h 00m1 stop
Thu, May 1 - Wed, May 7
9:40 pm - 5:55 pmIAD-SIN
32h 15m1 stop
10:15 am - 11:45 amSIN-IAD
37h 30m1 stop
$881Turkish Airlines
Find Deal
Thu, May 1 - Thu, May 8
9:40 pm - 5:55 pmIAD-SIN
32h 15m1 stop
10:15 am - 11:45 amSIN-IAD
37h 30m1 stop
$889Turkish Airlines
Find Deal
Tue, Apr 22 - Thu, May 1
9:00 pm - 9:00 amIAD-SIN
24h 00m1 stop
3:10 am - 3:40 pmSIN-IAD
24h 30m1 stop
$1,010Qatar Airways
Find Deal
Thu, Sep 18 - Sun, Sep 28
9:00 pm - 3:45 pmIAD-SIN
30h 45m1 stop
10:30 am - 3:40 pmSIN-IAD
41h 10m1 stop
$1,013Qatar Airways
Find Deal
Tue, Apr 22 - Mon, Apr 28
6:35 pm - 6:45 amBWI-SIN
24h 10m1 stop
8:40 pm - 7:17 amSIN-BWI
22h 37m1 stop
$1,179United Airlines
Find Deal
Wed, May 7 - Wed, May 14
3:30 pm - 6:45 amDCA-SIN
27h 15m2 stops
9:00 am - 9:34 pmSIN-DCA
24h 34m1 stop
$1,179United Airlines
Find Deal
Wed, May 7 - Wed, May 14
9:41 am - 12:20 amDCA-SIN
26h 39m2 stops
1:55 am - 3:59 pmSIN-DCA
26h 04m2 stops
$1,216American Airlines
Find Deal
Thu, Sep 18 - Sun, Sep 28
6:05 am - 12:20 amBWI-SIN
30h 15m2 stops
1:55 am - 10:50 pmSIN-BWI
32h 55m2 stops
$1,547American Airlines
Find Deal
Tue, Apr 22 - Wed, Apr 30

Alaska Airlines flights from Washington, D.C. to Singapore

Our best Alaska Airlines deals on Washington, D.C. to Singapore flight tickets
Alaska Airlines
Apr 14
IAD9:00 pmWashington, D.C. Dulles Intl
24h 00m
1 stop
SIN9:00 amSingapore Changi
Apr 21
SIN6:45 pmSingapore Changi
32h 55m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl
Alaska Airlines
Apr 14
IAD9:00 pmWashington, D.C. Dulles Intl
30h 45m
1 stop
SIN3:45 pmSingapore Changi
Apr 21
SIN6:45 pmSingapore Changi
32h 55m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl

United Airlines flights from Washington, D.C. to Singapore

Our best United Airlines deals on Washington, D.C. to Singapore flight tickets
United Airlines
May 7
BWI6:35 pmBaltimore/Washington
24h 10m
1 stop
SIN6:45 amSingapore Changi
May 14
SIN8:40 pmSingapore Changi
22h 37m
1 stop
BWI7:17 amBaltimore/Washington
United Airlines
Mar 31
BWI6:15 amBaltimore/Washington
24h 10m
1 stop
SIN6:25 pmSingapore Changi
Apr 7
SIN8:40 pmSingapore Changi
22h 46m
1 stop
BWI7:26 amBaltimore/Washington
United Airlines
Apr 1
BWI12:35 pmBaltimore/Washington
30h 10m
2 stops
SIN6:45 amSingapore Changi
May 12
SIN8:40 pmSingapore Changi
25h 14m
2 stops
BWI9:54 amBaltimore/Washington

See travel insights to Singapore from

How to get the cheapest flight ticket from Washington, D.C. to Singapore

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. and Singapore?

What is the cheapest month to fly to Singapore?

The month of November is, on average, the cheapest month to fly to Singapore from Washington, D.C., with most prices found around $1,006. If you aren’t able to travel to Singapore during the month of November, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,022.

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Washington, D.C. to Singapore is on a Wednesday when prices can be found for as low as $1,184. The most expensive day to fly to Singapore is Saturday, with ticket prices averaging around $1,370.

What is the cheapest time of day to depart on your flight to Singapore?

At noon is the cheapest time of day to fly from Washington, D.C. to Singapore when you can find flight prices for as low as $1,137. Flying to Singapore at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,511 on average. Flights to Singapore from Washington, D.C. in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Singapore?

You are more likely to see cheaper flights to Singapore from Washington, D.C. when booking 12 weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $1,259 when searching 12 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from Washington, D.C. for as low as $1,116 on momondo.

How have Washington, D.C. to Singapore flight prices changed over time?

As of March 2025, prices for Washington, D.C. to Singapore flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Singapore

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Singapore according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Singapore (WAS to SIN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Singapore

Best Price Found

$455

Fastest flight time

22h 00m

Direct flights

None

Airports in Singapore

1 airport
The best one-way flight to Singapore from Washington, D.C. in the past 72 hours is $455. The best round-trip flight deal from Washington, D.C. to Singapore found on momondo in the last 72 hours is $785.
The fastest flight from Washington, D.C. to Singapore takes 22h 00m
There are no direct flights from Washington, D.C. to Singapore. Popular non-direct route for this connection is Washington, D.C. Dulles Intl Airport - Singapore Changi Airport.
There is 1 airport near Singapore: Singapore Changi (SIN)

  • How far is Washington, D.C. to Singapore Changi by plane?

    The straight-line distance from Washington, D.C. to Singapore Changi is 9651.2 mi. A reasonable flight in good conditions will take 22h 00m.

  • When did momondo last update prices for flights from Washington, D.C. to Singapore Changi Airport?

    Prices for flights from Washington, D.C. to Singapore Changi Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to Singapore Changi Airport?

  • How old do you have to be to fly from Washington, D.C. to Singapore Changi Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Singapore Changi Airport.

  • What documentation or ID do you need to fly to Singapore Changi Airport?

    The travel and health documents you'll need for your trip to Singapore Changi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Singapore Changi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Washington, D.C. to Singapore?


Best airlines flying from Washington, D.C. to Singapore

Compare and see reviews for airlines that fly from Washington, D.C. to Singapore with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $831Free CancellationRating
7.3
3,745 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $904Free CancellationRating
7.4
8,603 reviews
Search United Airlines flights
DeltaPriceFrom $1,009Free CancellationRating
8.0
7,888 reviews
Search Delta flights
Qatar AirwaysPriceFrom $1,014Free CancellationRating
7.4
3,540 reviews
Search Qatar Airways flights
Korean AirPriceFrom $1,037Free CancellationRating
8.4
1,047 reviews
Search Korean Air flights
JetBluePriceFrom $1,043Free CancellationRating
7.3
2,924 reviews
Search JetBlue flights
American AirlinesPriceFrom $1,124Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Singapore AirlinesPriceFrom $1,206Free CancellationRating
8.1
1,284 reviews
Search Singapore Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Singapore?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Singapore. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Singapore with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Singapore on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Singapore?

Once you have performed a search for Washington, D.C. to Singapore flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Singapore right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Singapore flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


An easier way to manage your Singapore trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Sat 3/29
Sat 4/5

Find better results for your trip to Singapore

Fly your favorite airline to Singapore

Airlines are sorted and displayed according to clicks in the past 7 days on momondo