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Cheap flights from Washington, D.C. to Singapore from $406

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 8/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to Singapore

Cheap round-trip flights

These are some of the best round-trip flight deals from Washington, D.C. to Singapore that have been recently found on momondo from popular airlines, departing in the coming months.
Air India Logo
11:00 am - 9:45 pmIAD-SIN
22h 45m1 stop
Air India Logo
11:00 pm - 7:40 amSIN-IAD
44h 40m1 stop
$748Air India
Find Deal
Wed, Aug 27 - Mon, Sep 8
Air India Logo
11:00 am - 7:30 amIAD-SIN
32h 30m1 stop
Air India Logo
11:00 pm - 7:40 amSIN-IAD
44h 40m1 stop
$759Air India
Find Deal
Fri, Sep 19 - Mon, Sep 29
Turkish Airlines Logo
1:30 pm - 5:55 pmIAD-SIN
40h 25m1 stop
Turkish Airlines Logo
10:15 am - 11:45 amSIN-IAD
37h 30m1 stop
$890Turkish Airlines
Find Deal
Thu, Sep 18 - Thu, Sep 25
Turkish Airlines Logo
9:40 pm - 5:55 pmIAD-SIN
32h 15m1 stop
Turkish Airlines Logo
11:10 pm - 7:45 pmSIN-IAD
32h 35m1 stop
$913Turkish Airlines
Find Deal
Mon, Aug 25 - Tue, Sep 2
Qatar Airways Logo
9:00 pm - 12:55 pmIAD-SIN
27h 55m2 stops
Qatar Airways Logo
3:10 am - 3:40 pmSIN-IAD
24h 30m1 stop
$1,125Qatar Airways
Find Deal
Thu, Sep 18 - Wed, Sep 24
Qatar Airways Logo
9:00 pm - 11:25 amIAD-SIN
26h 25m2 stops
Qatar Airways Logo
3:10 am - 3:40 pmSIN-IAD
24h 30m1 stop
$1,165Qatar Airways
Find Deal
Mon, Sep 1 - Tue, Sep 9
Korean Air Logo
1:15 pm - 7:55 pmIAD-SIN
42h 40m1 stop
Korean Air Logo
1:10 am - 10:55 amSIN-IAD
21h 45m1 stop
$1,179Korean Air
Find Deal
Mon, Sep 1 - Tue, Sep 9
United Airlines Logo
6:56 pm - 6:15 amBWI-SIN
23h 19m1 stop
United Airlines Logo
8:45 am - 9:29 pmSIN-BWI
24h 44m1 stop
$1,194United Airlines
Find Deal
Tue, Sep 16 - Wed, Oct 1
United Airlines Logo
7:00 am - 6:25 pmDCA-SIN
23h 25m1 stop
United Airlines Logo
8:40 pm - 4:56 pmSIN-DCA
32h 16m1 stop
$1,194United Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 24
Korean Air Logo
7:00 am - 11:40 pmIAD-SIN
28h 40m2 stops
Korean Air Logo
1:10 am - 10:55 amSIN-IAD
21h 45m1 stop
$1,202Korean Air
Find Deal
Wed, Aug 27 - Sun, Sep 7

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

Our best Turkish Airlines deals on Washington, D.C. to Singapore flight tickets
Turkish Airlines
Sep 18
IAD1:30 pmWashington, D.C. Dulles Intl
40h 25m
1 stop
SIN5:55 pmSingapore Changi
Sep 25
SIN10:15 amSingapore Changi
37h 30m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
Turkish Airlines
May 5
IAD9:40 pmWashington, D.C. Dulles Intl
32h 15m
1 stop
SIN5:55 pmSingapore Changi
May 20
SIN11:10 pmSingapore Changi
24h 35m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
Turkish Airlines
Aug 25
IAD9:40 pmWashington, D.C. Dulles Intl
32h 15m
1 stop
SIN5:55 pmSingapore Changi
Sep 2
SIN11:10 pmSingapore Changi
32h 35m
1 stop
IAD7:45 pmWashington, D.C. Dulles Intl

Etihad Airways flights from Washington, D.C. to Singapore

Our best Etihad Airways deals on Washington, D.C. to Singapore flight tickets
Etihad Airways
May 6
IAD10:05 pmWashington, D.C. Dulles Intl
23h 35m
1 stop
SIN9:40 amSingapore Changi
May 17
SIN9:10 pmSingapore Changi
31h 00m
1 stop
IAD4:10 pmWashington, D.C. Dulles Intl
Etihad Airways
Sep 17
IAD10:05 pmWashington, D.C. Dulles Intl
23h 35m
1 stop
SIN9:40 amSingapore Changi
Sep 30
SIN9:10 pmSingapore Changi
31h 00m
1 stop
IAD4:10 pmWashington, D.C. Dulles Intl
Etihad Airways
May 16
IAD10:05 pmWashington, D.C. Dulles Intl
23h 35m
1 stop
SIN9:40 amSingapore Changi
May 26
SIN9:10 pmSingapore Changi
31h 00m
1 stop
IAD4:10 pmWashington, D.C. Dulles Intl

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 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 October is also cheap. Prices for this month can be found on momondo for an average of $1,038.

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 19 weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $1,244 when searching 19 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 $1,081 on momondo.

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

As of April 2025, prices for Washington, D.C. to Singapore flights are approximately 0% 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

$406

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 $406. The best round-trip flight deal from Washington, D.C. to Singapore found on momondo in the last 72 hours is $748.
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 routes for this connection are Washington, D.C. Dulles Intl Airport - Singapore Changi Airport, Washington, D.C. Reagan-National Airport - Singapore Changi Airport and Baltimore/Washington 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 $830Free CancellationRating
7.3
3,790 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $904Free CancellationRating
7.4
8,696 reviews
Search United Airlines flights
Air CanadaPriceFrom $960Free CancellationRating
7.0
9,245 reviews
Search Air Canada flights
Qatar AirwaysPriceFrom $1,014Free CancellationRating
7.4
3,563 reviews
Search Qatar Airways flights
JetBluePriceFrom $1,024Free CancellationRating
7.3
2,924 reviews
Search JetBlue flights
Korean AirPriceFrom $1,037Free CancellationRating
8.4
1,069 reviews
Search Korean Air flights
Singapore AirlinesPriceFrom $1,097Free CancellationRating
8.1
1,292 reviews
Search Singapore Airlines flights
American AirlinesPriceFrom $1,124Free CancellationRating
7.2
10,000 reviews
Search American 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.


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