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Cheap flights from Washington, D.C. Reagan-National Airport to Singapore from $537

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. Reagan-National Airport to Singapore departing on 4/15. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:59 pm - 7:10 pm
DCA
-
SIN
36h 11m
1 stop
Multiple Airlines Logo
9:00 am - 9:59 pm
SIN
-
DCA
24h 59m
1 stop
$1,134Multiple Airlines
Mon, Sep 21 - Sat, Sep 26
Air Canada Logo
12:40 pm - 5:15 am
DCA
-
SIN
52h 35m
2 stops
Air Canada Logo
7:00 am - 10:20 am
SIN
-
DCA
39h 20m
2 stops
$1,144Air Canada
Wed, Sep 23 - Tue, Oct 6
Air Canada Logo
12:40 pm - 5:15 am
DCA
-
SIN
52h 35m
2 stops
Air Canada Logo
7:00 am - 9:50 pm
SIN
-
DCA
50h 50m
2 stops
$1,166Air Canada
Wed, Sep 9 - Sat, Sep 19
Air Canada Logo
9:40 am - 5:15 am
DCA
-
SIN
55h 35m
2 stops
Air Canada Logo
7:00 am - 10:20 am
SIN
-
DCA
39h 20m
2 stops
$1,182Air Canada
Sat, Sep 12 - Sat, Sep 19
Singapore Airlines Logo
6:59 pm - 7:10 pm
DCA
-
SIN
36h 11m
1 stop
Singapore Airlines Logo
8:45 pm - 8:00 pm
SIN
-
DCA
35h 15m
1 stop
$1,189Singapore Airlines
Thu, Aug 27 - Mon, Sep 28
Singapore Airlines Logo
6:59 pm - 7:10 pm
DCA
-
SIN
36h 11m
1 stop
Singapore Airlines Logo
8:45 pm - 8:00 pm
SIN
-
DCA
35h 15m
1 stop
$1,195Singapore Airlines
Thu, Aug 27 - Mon, Sep 28
Air Canada Logo
4:20 pm - 5:15 am
DCA
-
SIN
48h 55m
2 stops
Air Canada Logo
7:00 am - 10:20 am
SIN
-
DCA
39h 20m
2 stops
$1,197Air Canada
Mon, Sep 21 - Sat, Sep 26
Multiple Airlines Logo
9:59 am - 7:40 am
DCA
-
SIN
33h 41m
1 stop
Multiple Airlines Logo
9:00 am - 9:59 pm
SIN
-
DCA
25h 59m
1 stop
$1,208Multiple Airlines
Sat, Aug 15 - Tue, Dec 15
Multiple Airlines Logo
9:30 am - 12:55 am
DCA
-
SIN
27h 25m
2 stops
Multiple Airlines Logo
8:45 pm - 8:00 pm
SIN
-
DCA
35h 15m
1 stop
$1,210Multiple Airlines
Tue, Sep 1 - Tue, Sep 8
Cathay Pacific Logo
5:30 pm - 11:45 am
DCA
-
SIN
30h 15m
2 stops
Cathay Pacific Logo
1:45 am - 11:58 pm
SIN
-
DCA
34h 13m
2 stops
$1,235Cathay Pacific
Tue, Sep 8 - Mon, Sep 14

United Airlines flights from Washington, D.C. Reagan-National Airport to Singapore

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Singapore flight tickets
United Airlines
May 6
DCA12:40 pmWashington, D.C. Reagan-National
30h 05m
2 stops
SIN6:45 amSingapore Changi
May 13
SIN9:00 amSingapore Changi
25h 30m
1 stop
DCA10:30 pmWashington, D.C. Reagan-National
$1,326
United Airlines
Apr 9
DCA7:59 pmWashington, D.C. Reagan-National
34h 36m
2 stops
SIN6:35 pmSingapore Changi
Apr 13
SIN8:35 pmSingapore Changi
31h 29m
3 stops
DCA4:04 pmWashington, D.C. Reagan-National
$2,110
United Airlines
Apr 10
DCA8:00 pmWashington, D.C. Reagan-National
34h 35m
2 stops
SIN6:35 pmSingapore Changi
Apr 26
SIN8:35 pmSingapore Changi
55h 29m
3 stops
DCA4:04 pmWashington, D.C. Reagan-National
$2,178

Qatar Airways flights from Washington, D.C. Reagan-National Airport to Singapore

Our best Qatar Airways deals on Washington, D.C. Reagan-National Airport to Singapore flight tickets
Qatar Airways
May 5
DCA5:48 pmWashington, D.C. Reagan-National
33h 57m
2 stops
SIN3:45 pmSingapore Changi
May 16
SIN7:40 pmSingapore Changi
33h 02m
2 stops
DCA4:42 pmWashington, D.C. Reagan-National
$1,333
Qatar Airways
May 12
DCA5:48 pmWashington, D.C. Reagan-National
33h 57m
2 stops
SIN3:45 pmSingapore Changi
May 17
SIN7:40 pmSingapore Changi
33h 02m
2 stops
DCA4:42 pmWashington, D.C. Reagan-National
$1,401
Qatar Airways
Apr 8
DCA2:54 pmWashington, D.C. Reagan-National
29h 56m
2 stops
SIN8:50 amSingapore Changi
Apr 23
SIN7:40 pmSingapore Changi
39h 48m
2 stops
DCA11:28 pmWashington, D.C. Reagan-National
$1,464

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 28, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 9/21

6:59 pm-7:10 pm

1 stop36h 11m

Singapore Changi

Sat 9/26

9:00 am-9:59 pm

1 stop24h 59m

$1,134

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 9/23

12:40 pm-5:15 am

2 stops52h 35m

Singapore Changi

Tue 10/6

7:00 am-10:20 am

2 stops39h 20m

$1,144

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 9/9

12:40 pm-5:15 am

2 stops52h 35m

Singapore Changi

Sat 9/19

7:00 am-9:50 pm

2 stops50h 50m

$1,166

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sat 9/12

9:40 am-5:15 am

2 stops55h 35m

Singapore Changi

Sat 9/19

7:00 am-10:20 am

2 stops39h 20m

$1,182

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 8/27

6:59 pm-7:10 pm

1 stop36h 11m

Singapore Changi

Mon 9/28

8:45 pm-8:00 pm

1 stop35h 15m

$1,189

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 8/27

6:59 pm-7:10 pm

1 stop36h 11m

Singapore Changi

Mon 9/28

8:45 pm-8:00 pm

1 stop35h 15m

$1,195

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 9/21

4:20 pm-5:15 am

2 stops48h 55m

Singapore Changi

Sat 9/26

7:00 am-10:20 am

2 stops39h 20m

$1,197
Quickest round-trip

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sat 8/15

9:59 am-7:40 am

1 stop33h 41m

Singapore Changi

Tue 12/15

9:00 am-9:59 pm

1 stop25h 59m

$1,208

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 9/1

9:30 am-12:55 am

2 stops27h 25m

Singapore Changi

Tue 9/8

8:45 pm-8:00 pm

1 stop35h 15m

$1,210

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 9/8

5:30 pm-11:45 am

2 stops30h 15m

Singapore Changi

Mon 9/14

1:45 am-11:58 pm

2 stops34h 13m

$1,235

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Singapore from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport 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

Can stopping save me money on Washington, D.C. Reagan-National Airport to Singapore flights?

You could potentially save up to 18% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Singapore flight.

When to book flights from Washington, D.C. Reagan-National Airport to Singapore

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport 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. Reagan-National Airport to Singapore (DCA to SIN) flight deals and tips

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

Fastest flight time

31h 16m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Singapore takes 31h 16m
There are no direct flights from Washington, D.C. Reagan-National Airport to Singapore. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Singapore.
Search flight deals

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

    A flight from Washington, D.C. Reagan-National to Singapore Changi will travel around 9654.9 mi. A reasonable flight in good conditions will take 31h 16m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Singapore Changi Airport.

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

    The required travel and health documents for your Singapore Changi Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Singapore Changi Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Singapore. momondo saves you time and could save you money on your trip.

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

Flights from Washington, D.C. to Singapore with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Singapore from Washington, D.C..

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

If you are not ready to book a flight from Washington, D.C. to Singapore now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Singapore and let you know when they change.

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Cabin classes currently available on flights to Singapore

List of cabin classes available on flights landing in Singapore. Availability may vary depending on flight origin and airline.
First Class to Singapore
Business Class to Singaporefrom $1,571