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Cheap flights from Washington, D.C. to Singapore from S$ 531

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20-8. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SIN
5 May — 12 May1
1 adult

Cheap flight deals from Washington, D.C. to Singapore

Keep the following information in mind while searching for Washington, D.C. to Singapore flight deals. Data was last updated 30 April 2025.

Round-trip from

S$ 1,341

One-way from

S$ 531

Popular in

December

Cheapest in

November

Average price

S$ 1,380
IndiGo
  • IndiGo
  • 20-9-5-10
  • 3 total stops
  • 68h 30m total
  • Washington, D.C. to Singapore
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Air India
  • Air India
  • 20-8
  • 1 total stop
  • 32h 30m total
  • Washington, D.C. to Singapore
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (S$ 50 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (S$ 83 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Washington, D.C. to Singapore

Cheapest flights from Washington, D.C. to Singapore
Explore the most affordable flight options available from Washington, D.C. to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Sun 4-513:30IAD - SIN
1 stop40h 25mTurkish Airlines
Fri 9-510:15SIN - IAD
1 stop37h 30mTurkish Airlines
Deal found 29-4S$ 1,324
Sat 20-911:00IAD - SIN
1 stop32h 30mMultiple Airlines
Sun 5-1019:45SIN - IAD
2 stops36h 00mMultiple Airlines
Deal found 28-4S$ 1,341
Wed 7-517:44IAD - SIN
2 stops49h 21mAir Canada
Tue 13-506:15SIN - IAD
2 stops26h 53mAir Canada
Deal found 29-4S$ 1,358
Wed 7-511:55DCA - SIN
2 stops29h 35mCathay Pacific
Mon 12-501:50SIN - DCA
2 stops34h 56mCathay Pacific
Deal found 29-4S$ 1,397
Mon 3-1120:05IAD - SIN
2 stops27h 50mQatar Airways
Thu 6-1110:15SIN - IAD
1 stop35h 05mQatar Airways
Deal found 29-4S$ 1,404
Sat 7-616:35DCA - SIN
2 stops50h 30mAir Canada
Sat 14-609:10SIN - DCA
2 stops37h 09mAir Canada
Deal found 29-4S$ 1,423
Wed 30-415:35IAD - SIN
2 stops27h 55mAir India
Fri 9-520:30SIN - IAD
1 stop23h 10mAir India
Deal found 29-4S$ 1,440
Fri 19-918:55BWI - SIN
1 stop24h 55mSingapore Airlines
Mon 29-920:45SIN - BWI
1 stop23h 21mSingapore Airlines
Deal found 28-4S$ 1,477
Mon 11-821:40IAD - SIN
2 stops31h 40mIndiGo
Wed 27-819:45SIN - IAD
2 stops36h 00mIndiGo
Deal found 29-4S$ 1,486
Wed 17-922:05IAD - SIN
1 stop23h 35mEtihad Airways
Sat 27-921:10SIN - IAD
1 stop31h 00mEtihad Airways
Deal found 28-4S$ 1,489
Mon 1-906:59DCA - SIN
2 stops29h 46mMultiple Airlines
Thu 11-901:10SIN - DCA
2 stops32h 41mMultiple Airlines
Deal found 29-4S$ 1,520
Mon 1-913:15IAD - SIN
1 stop42h 40mKorean Air
Tue 9-901:10SIN - IAD
1 stop21h 45mKorean Air
Deal found 29-4S$ 1,543

Cheapflights Fare Finder

Customise your flight search to find flights from Washington, D.C. 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, Cheapflights users made 200,618 searches. Data last updated 30 April 2025.
Use the filters below to find and compare flights from Washington, D.C. to Singapore that are best for you.

Fly from

Washington, D.C.

Fly to

Singapore

Route

Depart

Return

Price

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 20-9

11:00-07:30

1 stop32h 30m

Singapore Changi

Sun 5-10

19:45-19:45

2 stops36h 00m

S$ 1,341

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 13-8

11:00-07:30

1 stop32h 30m

Singapore Changi

Sat 30-8

20:30-07:40

1 stop23h 10m

S$ 1,358

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sat 7-6

16:35-07:05

2 stops50h 30m

Singapore Changi

Sat 14-6

09:10-10:19

2 stops37h 09m

S$ 1,423

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 7-6

17:31-07:05

2 stops49h 34m

Singapore Changi

Sat 14-6

09:10-09:41

2 stops36h 31m

S$ 1,431

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 9-8

13:30-17:55

1 stop40h 25m

Singapore Changi

Sun 24-8

10:15-11:45

1 stop37h 30m

S$ 1,450

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 18-9

21:00-12:55

2 stops27h 55m

Singapore Changi

Wed 24-9

03:10-15:40

1 stop24h 30m

S$ 1,472

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Fri 19-9

18:55-07:50

1 stop24h 55m

Singapore Changi

Mon 29-9

20:45-08:06

1 stop23h 21m

S$ 1,477

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 11-8

21:40-17:20

2 stops31h 40m

Singapore Changi

Wed 27-8

19:45-19:45

2 stops36h 00m

S$ 1,486

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 17-9

22:05-09:40

1 stop23h 35m

Singapore Changi

Sat 27-9

21:10-16:10

1 stop31h 00m

S$ 1,489

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 1-9

06:59-00:45

2 stops29h 46m

Singapore Changi

Thu 11-9

01:10-21:51

2 stops32h 41m

S$ 1,520

Flights are sorted by cheapest return flights first.

Deals found on 29-4

Showing 1-10 of 60 results
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Best time to book a flight from Washington, D.C. to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Washington, D.C. with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Singapore

Rainfall in Singapore by month

Plan your trip to Singapore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Singapore ranges from 150.0 - 269.0 inches per month. December is typically the wettest month, when rainfall can reach 269.0 mm. July is typically the driest time to visit Singapore when rainfall is around 150.0 mm.

Temperature in Singapore by month

Plan your trip to Singapore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 26.0 C).

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated 30 April 2025.
Peruse reviews from past customers who have flown with Korean Air, Japan Airlines and China Airlines from Washington, D.C. to Singapore to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,068 reviews
Check prices

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,068 reviews
Korean Air
8.4
Very Good
1,068 reviews
Check prices

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Japan Airlines
8.3
Very Good
1,459 reviews
Korean Air
8.4
Very Good
1,068 reviews
Check prices

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very Good
732 reviews
Korean Air
8.4
Very Good
1,068 reviews
Check prices

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.3
Very Good
852 reviews
Korean Air
8.4
Very Good
1,068 reviews
Check prices

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very Good
1,292 reviews
Korean Air
8.4
Very Good
1,068 reviews
Check prices

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Washington, D.C. to Singapore one-way?

    For one-way options, check prices for Air India. According to our data, you can fly for as low as S$ 531. Users have also found prices from S$ 665 and S$ 769 on Cathay Pacific and IndiGo, respectively.

  • What are the most popular routes from Washington, D.C. to Singapore?

    Most travellers choose Washington, D.C. Dulles Intl - Singapore Changi, Washington, D.C. Reagan-National - Singapore Changi or Baltimore/Washington - Singapore Changi when deciding on the best route from Washington, D.C. to Singapore.

  • Can I find deals for flights from Washington, D.C. to Singapore that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Singapore flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Singapore.

  • Can I find deals for business class flights from Washington, D.C. to Singapore?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Washington, D.C. to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Singapore flights

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Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Singapore?

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Can Cheapflights notify me if prices for flights from Washington, D.C. to Singapore become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Singapore from Washington, D.C. today and book when prices fit your budget.

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