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$328+ Cheap flights from Washington to Singapore (SIN)

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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SIN
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Washington to Singapore

Discover tips and strategies to find the most affordable flight options for your journey from Washington (USWA) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$706
(Booking.com)

One-way from

$328
(FlightHub)

Good round-trip deal

$822 or less

Good one-way deal

$334 or less
From Washington to Singapore Changi
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One-way flight from Washington to Singapore Changi
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Price to beat on a round-trip flight from Washington to Singapore Changi.
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Price to beat on a one-way flight from Washington to Singapore Changi.
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Find flight deals from Washington to Singapore

Cheapest flights from Washington to Singapore
Explore the most affordable flight options available from Washington to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Booking.com deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/212:45 pmSEA - SIN
1 stop41h 10mAsiana Airlines
Sat 3/81:55 amSIN - SEA
1 stop25h 00mAsiana Airlines
Deal found 1/21$706
This flugladen.de deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1812:00 pmSEA - SIN
1 stop26h 00mKorean Air
Mon 3/241:30 amSIN - SEA
1 stop23h 30mKorean Air
Deal found 1/19$716
This oojo deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2812:30 pmSEA - SIN
1 stop20h 20mJapan Airlines
Tue 2/410:25 pmSIN - SEA
2 stops34h 34mJapan Airlines
Deal found 1/21$717
This Orbitz deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2312:30 pmSEA - SIN
1 stop20h 20mMultiple Airlines
Fri 1/318:15 amSIN - SEA
2 stops22h 15mMultiple Airlines
Deal found 1/20$719
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/216:00 amSEA - SIN
2 stops26h 50mAmerican Airlines
Tue 1/288:15 amSIN - SEA
2 stops26h 35mAmerican Airlines
Deal found 1/20$721
This Gurufare deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/910:15 amSEA - SIN
Nonstop16h 20mSingapore Airlines
Tue 9/239:00 amSIN - SEA
Nonstop14h 45mSingapore Airlines
Deal found 1/21$724
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/137:00 amSEA - SIN
1 stop21h 15mUnited Airlines
Tue 3/410:10 amSIN - SEA
1 stop27h 05mUnited Airlines
Deal found 1/21$725
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/310:44 amSEA - SIN
1 stop21h 26mDelta
Sun 2/91:30 amSIN - SEA
1 stop28h 00mDelta
Deal found 1/20$751
This Gotogate deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/286:00 amPDX - SIN
2 stops32h 40mJapan Airlines
Wed 2/128:15 amSIN - PDX
2 stops27h 56mJapan Airlines
Deal found 1/20$753
This Kissandfly.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/65:40 pmSEA - SIN
1 stop34h 35mLufthansa
Sat 3/2210:10 amSIN - SEA
2 stops26h 47mLufthansa
Deal found 1/20$764
This Gotogate deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/911:35 pmSEA - SIN
1 stop22h 25mPhilippine Airlines
Sun 3/162:10 pmSIN - SEA
1 stop20h 00mPhilippine Airlines
Deal found 1/21$782
This Travelocity deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/138:00 amPDX - SIN
2 stops25h 20mMultiple Airlines
Mon 10/208:05 amSIN - PDX
2 stops23h 23mMultiple Airlines
Deal found 1/20$787

Find flights from Washington to Singapore within your budget

Customize your flight search to find flights from Washington 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 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 3/2

12:45 pm-12:35 am

1 stop19h 50m

Singapore Changi

Sun 3/9

11:10 pm-11:55 am

1 stop27h 45m

$706

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 3/18

12:00 pm-5:00 am

1 stop26h 00m

Singapore Changi

Mon 3/24

1:30 am-10:00 am

1 stop23h 30m

$716

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 2/13

7:00 am-8:15 pm

1 stop21h 15m

Singapore Changi

Mon 3/3

10:10 am-6:29 pm

1 stop24h 19m

$725

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 2/3

10:44 am-12:10 am

1 stop21h 26m

Singapore Changi

Sun 2/9

1:30 am-1:30 pm

1 stop28h 00m

$751

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 3/6

5:40 pm-8:15 pm

1 stop34h 35m

Singapore Changi

Sat 3/22

10:10 am-9:57 pm

2 stops26h 47m

$764

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 3/6

8:40 am-5:40 pm

Nonstop17h 00m

Singapore Changi

Sun 3/23

9:00 am-8:10 am

Nonstop14h 10m

$766

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 3/9

11:35 pm-1:00 pm

1 stop22h 25m

Singapore Changi

Sun 3/16

2:10 pm-7:10 pm

1 stop20h 00m

$782

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 2/12

5:15 am-12:10 am

2 stops26h 55m

Singapore Changi

Wed 3/5

11:00 am-11:58 pm

2 stops28h 58m

$800

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 2/18

3:05 pm-7:05 pm

1 stop36h 00m

Singapore Changi

Tue 3/11

9:15 am-1:01 pm

1 stop18h 46m

$851

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 3/9

9:40 am-5:40 pm

Nonstop17h 00m

Singapore Changi

Sat 3/15

2:00 am-7:15 pm

1 stop32h 15m

$862

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 46 results
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Best time to book a flight from Washington to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Washington with our price prediction graph.
Estimated round-trip 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.

Travel insights for flights from Washington to Singapore

Get recent, data-driven insights about flights from Washington to Singapore including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from State of Washington to Singapore?

Currently, September is the cheapest month in which you can book a flight from State of Washington to Singapore (average of $1,011). Flying from State of Washington to Singapore in December is currently the most expensive (average of $1,684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to SIN?

Find hourly flight availability from Washington to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

When flying from State of Washington to Singapore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 5.9 - 10.6 inches per month. December is typically the wettest month, when rainfall can reach 10.6 in. July is typically the driest time to visit Singapore when rainfall is around 5.9 in.

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 82.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 78.8 F).

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 January 21, 2025.
Get a feel of what it's like to fly with Singapore Airlines, Delta and Qatar Airways from Washington to Singapore by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
136 reviews

Comfort

9.0

Food

9.0

Boarding

9.1

Overall

9.1

Entertainment

9.1

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

STARLUX Airlines
9.1
Wonderful
136 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Comfort

9.0

Food

9.0

Boarding

9.1

Overall

9.1

Entertainment

9.1

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

Korean Air
8.5
Very good
1,039 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Comfort

9.0

Food

9.0

Boarding

9.1

Overall

9.1

Entertainment

9.1

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

EVA Air
8.4
Very good
1,253 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Comfort

9.0

Food

9.0

Boarding

9.1

Overall

9.1

Entertainment

9.1

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

ANA
8.4
Very good
852 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Comfort

9.0

Food

9.0

Boarding

9.1

Overall

9.1

Entertainment

9.1

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

Japan Airlines
8.3
Very good
1,449 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Comfort

9.0

Food

9.0

Boarding

9.1

Overall

9.1

Entertainment

9.1

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

Related info for your journey

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

  • What airport do you fly into for flights to Singapore from Washington?

    If you book a flight to Singapore from Washington, you will be flying to Changi, which is the city’s only airport. Singapore Changi (SIN) is located 10.5 mi from the center of Singapore.

  • How popular is this State of Washington to Singapore flight route?

    The Washington to Singapore Changi flight path was viewed by 42 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from State of Washington to Singapore one-way?

    The cheapest airlines for a one-way flight from State of Washington to Singapore are Singapore Airlines ($328), United Airlines ($367), and Japan Airlines ($406).

  • What are the most popular routes from State of Washington to Singapore?

    While some choose either Portland - Singapore Changi or Spokane - Singapore Changi, Seattle/Tacoma Intl - Singapore Changi is the most popular route from State of Washington to Singapore.

  • What are the cheapest flights from State of Washington to Singapore?

    The cheapest flight price from State of Washington to Singapore is $306. On average you can expect to pay $1,556. The most popular route, (Seattle/Tacoma Intl - Singapore Changi), can usually be booked for $694.

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

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

  • How can I find direct flights from Washington to Singapore?

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

  • Can I find deals for business class flights from Washington to Singapore?

    Yes. Cheapflights offers flight deals from Washington 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.

  • What is the cheapest month to book a flight from State of Washington to Singapore?

    Currently, September is the cheapest month in which you can book a flight from State of Washington to Singapore (average of $1,011). Flying from State of Washington to Singapore in December is currently the most expensive (average of $1,684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Washington to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Singapore

Discover the top 10 airlines that operate flights from Washington to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$694Average$782FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$706Average$1,156FlexibilityNo cancel feeOn-time71%
Philippine AirlinesCheapest$728Average$793FlexibilityNo cancel feeOn-time60%
Korean AirCheapest$728Average$997FlexibilityNo cancel feeOn-time81%
Singapore AirlinesCheapest$734Average$1,152FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$765Average$1,146FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$786Average$1,042FlexibilityNo cancel feeOn-time79%
DeltaCheapest$885Average$1,254FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$899Average$1,003FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$911Average$1,270FlexibilityNo cancel feeOn-time67%
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