What is the cheapest airline that flies from Washington, D.C. to Singapore Changi?

IndiGo, Turkish Airlines, and Air Canada are the most popular carriers operating from Washington, D.C. to Singapore Changi

How long does it take to fly to Singapore?

The flight from Washington, D.C. to Singapore depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Washington, D.C. (a popular airport in Washington, D.C.) to Singapore (the most popular airport in Singapore), then the flight time is 23h on average. If you fly from Baltimore (another popular airport in Washington, D.C.) to Singapore, then the average flight time is 23h 15m.

What airlines fly to Singapore?

Turkish Airlines, United Airlines and Qatar Airways are the top three most popular airlines that fly to Singapore from Washington, D.C. according to our data. Turkish Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 11 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

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?

As of July 2025, there are 11 operators available to choose from 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.

$415 Cheap Flights from Washington, D.C. to Singapore in 2025

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12:50 pm - 7:15 amIAD-SIN

30h 25m1 stop

11:00 pm - 7:40 amSIN-IAD

44h 40m1 stop

$816Air India

Find Deal

Wed, Aug 27 - Mon, Sep 8

11:00 am - 9:45 pmIAD-SIN

22h 45m1 stop

11:00 pm - 7:40 amSIN-IAD

44h 40m1 stop

$837Air India

Find Deal

Sun, Sep 7 - Fri, Sep 12

10:05 pm - 9:40 amIAD-SIN

23h 35m1 stop

9:10 pm - 4:10 pmSIN-IAD

31h 00m1 stop

$839Etihad Airways

Find Deal

Thu, Sep 11 - Tue, Sep 30

10:05 pm - 9:40 amIAD-SIN

23h 35m1 stop

9:10 pm - 4:10 pmSIN-IAD

31h 00m1 stop

$864Etihad Airways

Find Deal

Thu, Sep 11 - Tue, Sep 30

8:35 am - 11:40 pmDCA-SIN

27h 05m2 stops

10:30 pm - 2:59 pmSIN-DCA

28h 29m2 stops

$967Korean Air

Find Deal

Mon, Sep 1 - Wed, Sep 10

5:00 pm - 7:55 pmDCA-SIN

38h 55m2 stops

10:30 pm - 2:59 pmSIN-DCA

28h 29m2 stops

$968Korean Air

Find Deal

Tue, Sep 2 - Wed, Sep 10

8:59 am - 12:55 amDCA-SIN

27h 56m2 stops

6:40 pm - 8:59 pmSIN-DCA

38h 19m1 stop

$1,121Singapore Airlines

Find Deal

Tue, Sep 2 - Wed, Sep 10

7:28 pm - 7:50 amBWI-SIN

24h 22m1 stop

8:45 pm - 5:57 pmSIN-BWI

33h 12m1 stop

$1,127Singapore Airlines

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Wed, Oct 22 - Mon, Oct 27

7:00 pm - 6:15 amBWI-SIN

23h 15m1 stop

8:45 am - 10:45 pmSIN-BWI

26h 00m2 stops

$1,198United Airlines

Find Deal

Tue, Aug 26 - Tue, Sep 2

7:00 am - 6:25 pmDCA-SIN

23h 25m1 stop

8:45 am - 9:37 pmSIN-DCA

24h 52m1 stop

$1,198United Airlines

Find Deal

Tue, Aug 26 - Tue, Sep 2

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

Our best United Airlines deals on Washington, D.C. to Singapore flight tickets

United Airlines

Aug 26

BWI7:00 pmBaltimore/Washington

23h 15m

1 stop

SIN6:15 amSingapore Changi

Sep 2

SIN8:45 amSingapore Changi

26h 00m

2 stops

BWI10:45 pmBaltimore/Washington

$1,198

Find similar

United Airlines

Jul 27

IAD10:08 pmWashington, D.C. Dulles Intl

32h 17m

1 stop

SIN6:25 pmSingapore Changi

Aug 5

SIN8:45 amSingapore Changi

32h 33m

1 stop

IAD5:18 amWashington, D.C. Dulles Intl

$1,214

Find similar

United Airlines

Jul 16

IAD6:32 amWashington, D.C. Dulles Intl

23h 53m

1 stop

SIN6:25 pmSingapore Changi

Jul 24

SIN8:45 amSingapore Changi

28h 00m

1 stop

IAD12:45 amWashington, D.C. Dulles Intl

$1,225

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Korean Air flights from Washington, D.C. to Singapore

Our best Korean Air deals on Washington, D.C. to Singapore flight tickets

Korean Air

Sep 1

DCA8:35 amWashington, D.C. Reagan-National

27h 05m

2 stops

SIN11:40 pmSingapore Changi

Sep 10

SIN10:30 pmSingapore Changi

28h 29m

2 stops

DCA2:59 pmWashington, D.C. Reagan-National

$967

Find similar

Korean Air

Sep 2

DCA5:00 pmWashington, D.C. Reagan-National

38h 55m

2 stops

SIN7:55 pmSingapore Changi

Sep 10

SIN10:30 pmSingapore Changi

28h 29m

2 stops

DCA2:59 pmWashington, D.C. Reagan-National

$968

Find similar

Korean Air

Sep 17

DCA6:05 amWashington, D.C. Reagan-National

34h 55m

2 stops

SIN5:00 amSingapore Changi

Sep 24

SIN10:30 pmSingapore Changi

28h 33m

2 stops

DCA3:03 pmWashington, D.C. Reagan-National

$969

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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

Prices

Airlines

Other information

What is the cheapest month to fly to Singapore?

The month of October is, on average, the cheapest month to fly to Singapore from Washington, D.C., with most prices found around $982. If you aren’t able to travel to Singapore during the month of October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $1,006.

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 weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $1,196 when searching 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 $1,039 on momondo.

Can stopping save me money on Washington, D.C. to Singapore flights?

You could potentially save up to 2% on your flight if you consider stops on a Washington, D.C. to Singapore flight.

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

As of July 2025, prices for Washington, D.C. to Singapore flights are approximately 23% cheaper 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	$415
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 $415. The best round-trip flight deal from Washington, D.C. to Singapore found on momondo in the last 72 hours is $816.

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)

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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 10m.
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?
As of July 2025, there are 11 operators available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to Singapore is Turkish Airlines, representing 30% of all bookings. The subsequent popular airlines are Qatar Airways at 20%, United Airlines at 19%, and Alaska Airlines at 6%.

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
Air India	PriceFrom $807	Free Cancellation	Rating 5.5 2,926 reviews	Search Air India flights
Turkish Airlines	PriceFrom $827	Free Cancellation	Rating 7.3 3,901 reviews	Search Turkish Airlines flights
Etihad Airways	PriceFrom $884	Free Cancellation	Rating 7.4 1,222 reviews	Search Etihad Airways flights
United Airlines	PriceFrom $904	Free Cancellation	Rating 7.4 8,858 reviews	Search United Airlines flights
Air Canada	PriceFrom $938	Free Cancellation	Rating 7.1 9,725 reviews	Search Air Canada flights
Korean Air	PriceFrom $944	Free Cancellation	Rating 8.4 1,109 reviews	Search Korean Air flights
Qatar Airways	PriceFrom $1,006	Free Cancellation	Rating 7.4 3,602 reviews	Search Qatar Airways flights
JetBlue	PriceFrom $1,024	Free Cancellation	Rating 7.3 2,908 reviews	Search JetBlue flights
Alaska Airlines	PriceFrom $1,066	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Singapore Airlines	PriceFrom $1,097	Free Cancellation	Rating 8.1 1,326 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.

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Cheap flights from Washington, D.C. to Singapore from $415

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 9/23. 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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United Airlines flights from Washington, D.C. to Singapore

Our best United Airlines deals on Washington, D.C. to Singapore flight tickets

Korean Air flights from Washington, D.C. to Singapore

Our best Korean Air deals on Washington, D.C. to Singapore flight tickets

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?

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?

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

Can stopping save me money on Washington, D.C. to Singapore flights?

You could potentially save up to 2% on your flight if you consider stops on a Washington, D.C. to Singapore flight.

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

As of July 2025, prices for Washington, D.C. to Singapore flights are approximately 23% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Washington, D.C. to Singapore Changi?

IndiGo, Turkish Airlines, and Air Canada are the most popular carriers operating from Washington, D.C. to Singapore Changi

What airlines fly to Singapore?

How long does it take to fly to Singapore?

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

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

Fastest flight time

Direct flights

Airports in Singapore

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

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

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?

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

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

Why use momondo?

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

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

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

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

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.

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