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

The Washington to Singapore flight path was viewed by 50 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 Delta ($458), Korean Air ($469), and Japan Airlines ($472).

How far in advance should I book a flight from State of Washington to Singapore?

Users have found that booking a flight from State of Washington to Singapore at least 17 days early can save you up to 74% on average compared to booking a flight this week. If booking 17 days before your flight isn’t an option for you, users have found flights from State of Washington to Singapore for as little as $818 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,164 for flights departing within the next 3 days.

What is the cheapest month to fly from State of Washington to Singapore?

March can be a great time to fly to Singapore from State of Washington with a flight ticket averaging about $1,064. Cheapflights users have found deals in the month of March for as cheap as $690. The most expensive prices can be found in the month of December.

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.

$1,028+ Flights from Washington to Singapore

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheap flight deals from Washington to Singapore

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$707 (Air Canada)
One-way from	$458 (Delta)
Popular in	December
Cheapest in	March
Average price	$886
Good round-trip deal	$942 or less
Good one-way deal	$350 or less

Provider with most accurate pricing for Seattle/Tacoma Intl-Singapore Changi flight deals.

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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Singapore Changi flights.

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From Washington to Singapore

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One-way flight from Washington to Singapore

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Highest demand for flights based on searches. 6% potential increase in price ($73 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($51 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from Washington to Singapore.

Search Deals

Price to beat on a one-way flight from Washington to Singapore.

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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 abril 22, 2025.

jue. 9/47:40 pmPDX - SIN

1 stop20h 25mAir Canada

jue. 9/259:10 amSIN - PDX

1 stop20h 36mAir Canada

Deal found 4/22

$707

mar. 6/31:45 pmSEA - SIN

1 stop26h 20mAir Canada

mar. 6/109:10 amSIN - SEA

1 stop18h 48mAir Canada

Deal found 4/22

$757

vie. 10/37:00 amSEA - SIN

1 stop21h 10mSingapore Airlines

dom. 10/269:00 amSIN - SEA

Nonstop14h 10mSingapore Airlines

Deal found 4/22

$762

mar. 4/295:00 amPDX - SIN

2 stops34h 45mUnited Airlines

mar. 5/278:45 amSIN - PDX

1 stop18h 48mUnited Airlines

Deal found 4/22

$773

mié. 10/153:25 pmPDX - SIN

2 stops40h 55mMultiple Airlines

mar. 10/282:20 amSIN - PDX

2 stops22h 14mMultiple Airlines

Deal found 4/22

$780

mar. 10/72:55 pmSEA - SIN

1 stop25h 10mMultiple Airlines

mar. 10/219:45 amSIN - SEA

2 stops23h 51mMultiple Airlines

Deal found 4/22

$790

dom. 11/237:10 amPDX - SIN

2 stops25h 00mKorean Air

mar. 12/1610:30 pmSIN - PDX

2 stops30h 49mKorean Air

Deal found 4/22

$804

mié. 9/177:00 amPDX - SIN

1 stop21h 10mSingapore Airlines

mar. 9/309:15 amSIN - PDX

1 stop19h 35mSingapore Airlines

Deal found 4/22

$836

mar. 4/2912:50 pmSEA - SIN

1 stop25h 10mKorean Air

jue. 5/157:30 amSIN - SEA

1 stop18h 10mKorean Air

Deal found 4/22

$844

mié. 10/811:35 pmSEA - SIN

1 stop22h 45mPhilippine Airlines

mié. 10/2210:25 amSIN - SEA

1 stop23h 50mPhilippine Airlines

Deal found 4/22

$847

dom. 8/311:40 amSEA - SIN

1 stop19h 55mChina Airlines

dom. 9/72:00 amSIN - SEA

1 stop32h 45mChina Airlines

Deal found 4/22

$871

jue. 10/2312:25 pmSEA - SIN

1 stop25h 35mDelta

lun. 11/311:00 amSIN - SEA

1 stop18h 05mDelta

Deal found 4/22

$889

Best flights from Washington to Singapore
Discover carefully curated flight deals from Washington to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 22, 2025.

jue. 9/47:40 pmPDX - SIN

1 stop20h 25mAir Canada

jue. 9/259:10 amSIN - PDX

1 stop20h 36mAir Canada

Deal found 4/22

$707

dom. 9/710:15 amSEA - SIN

Nonstop16h 20mSingapore Airlines

dom. 9/219:00 amSIN - SEA

Nonstop14h 45mSingapore Airlines

Deal found 4/22

$773

mié. 10/153:25 pmPDX - SIN

2 stops40h 55mMultiple Airlines

mar. 10/282:20 amSIN - PDX

2 stops22h 14mMultiple Airlines

Deal found 4/22

$780

mar. 5/139:10 amPDX - SIN

2 stops28h 50mKorean Air

mar. 5/207:30 amSIN - PDX

2 stops24h 29mKorean Air

Deal found 4/22

$808

mié. 10/811:35 pmSEA - SIN

1 stop22h 45mPhilippine Airlines

mié. 10/2210:25 amSIN - SEA

1 stop23h 50mPhilippine Airlines

Deal found 4/22

$847

dom. 8/311:40 amSEA - SIN

1 stop19h 55mChina Airlines

dom. 9/72:00 amSIN - SEA

1 stop32h 45mChina Airlines

Deal found 4/22

$871

mié. 10/1510:55 amPDX - SIN

2 stops28h 20mUnited Airlines

mié. 10/2910:10 amSIN - PDX

1 stop19h 32mUnited Airlines

Deal found 4/22

$886

mar. 5/612:40 pmSEA - SIN

1 stop25h 20mDelta

mar. 5/207:30 amSIN - SEA

1 stop21h 05mDelta

Deal found 4/21

$889

lun. 5/194:30 pmSEA - SIN

1 stop33h 45mANA

jue. 6/511:05 amSIN - SEA

1 stop18h 20mANA

Deal found 4/22

$891

mar. 5/64:30 pmSEA - SIN

1 stop25h 30mQatar Airways

mar. 5/133:10 amSIN - SEA

1 stop24h 35mQatar Airways

Deal found 4/21

$919

jue. 8/1412:30 pmSEA - SIN

1 stop38h 25mTurkish Airlines

mié. 8/2011:10 pmSIN - SEA

1 stop26h 25mTurkish Airlines

Deal found 4/21

$926

dom. 8/311:30 pmSEA - SIN

1 stop19h 50mJapan Airlines

lun. 9/291:55 amSIN - SEA

1 stop23h 30mJapan Airlines

Deal found 4/21

$952

Last-minute flights from Washington to Singapore
Discover last-minute flight deals from Washington to Singapore. Data last updated abril 22, 2025 and is based on user searches.

vie. 4/2510:10 amPDX - SIN

1 stop29h 55mMultiple Airlines

sáb. 5/104:00 pmSIN - PDX

2 stops45h 55mMultiple Airlines

Deal found 4/22

$838

dom. 4/276:05 amPDX - SIN

2 stops31h 55mKorean Air

jue. 5/87:30 amSIN - PDX

2 stops24h 29mKorean Air

Deal found 4/22

$808

lun. 4/281:15 amSEA - SIN

1 stop20h 25mSTARLUX Airlines

jue. 5/152:00 pmSIN - SEA

1 stop17h 10mSTARLUX Airlines

Deal found 4/22

$1,020

lun. 4/281:10 amSEA - SIN

2 stops50h 25mMultiple Airlines

jue. 5/152:00 pmSIN - SEA

1 stop17h 10mMultiple Airlines

Deal found 4/22

$1,119

lun. 4/281:10 amSEA - SIN

1 stop32h 25mChina Airlines

mié. 5/142:00 amSIN - SEA

1 stop32h 30mChina Airlines

Deal found 4/22

$1,134

mar. 4/298:45 amPDX - SIN

2 stops31h 00mUnited Airlines

mar. 5/278:45 amSIN - PDX

2 stops23h 44mUnited Airlines

Deal found 4/22

$773

mar. 4/2912:50 pmSEA - SIN

1 stop25h 10mKorean Air

jue. 5/157:30 amSIN - SEA

1 stop18h 10mKorean Air

Deal found 4/22

$844

mar. 4/2910:10 amPDX - SIN

1 stop29h 55mAir Canada

mar. 5/279:10 amSIN - PDX

1 stop28h 45mAir Canada

Deal found 4/22

$1,243

jue. 5/11:50 amSEA - SIN

1 stop19h 10mEVA Air

mar. 5/203:10 pmSIN - SEA

1 stop19h 20mEVA Air

Deal found 4/21

$1,116

vie. 5/25:05 amSEA - SIN

1 stop22h 20mUnited Airlines

mié. 5/219:00 amSIN - SEA

1 stop19h 43mUnited Airlines

Deal found 4/21

$940

vie. 5/27:15 pmSEA - SIN

1 stop20h 50mAir Canada

sáb. 5/179:10 amSIN - SEA

1 stop24h 23mAir Canada

Deal found 4/21

$949

vie. 5/25:40 pmSEA - SIN

2 stops46h 00mANA

mar. 5/2011:05 amSIN - SEA

1 stop18h 20mANA

Deal found 4/21

$987

One-way flights from Washington to Singapore
Search for one-way flight options from Washington to Singapore. Find affordable one-way fares based on user searches. Data last updated abril 22, 2025.

jue. 9/187:10 amPDX - SIN

2 stops30h 50mDelta

Deal found 4/22

$458

lun. 8/111:20 pmSEA - SIN

1 stop19h 20mKorean Air

Deal found 4/21

$469

mié. 8/68:10 amSEA - SIN

2 stops31h 00mJapan Airlines

Deal found 4/21

$472

lun. 8/114:58 pmSEA - SIN

2 stops35h 57mMultiple Airlines

Deal found 4/21

$474

mar. 5/62:55 pmSEA - SIN

1 stop25h 10mAir Canada

Deal found 4/22

$475

jue. 9/1810:00 amPDX - SIN

1 stop30h 05mAir Canada

Deal found 4/22

$475

mar. 8/196:45 amSEA - SIN

2 stops32h 30mUnited Airlines

Deal found 4/21

$477

mié. 5/144:30 pmSEA - SIN

1 stop23h 10mANA

Deal found 4/22

$478

sáb. 8/910:15 amSEA - SIN

Nonstop16h 20mSingapore Airlines

Deal found 4/21

$482

mar. 10/141:10 amSEA - SIN

1 stop20h 25mChina Airlines

Deal found 4/22

$500

mar. 5/276:15 amPDX - SIN

2 stops27h 35mMultiple Airlines

Deal found 4/22

$546

sáb. 8/21:05 pmSEA - SIN

1 stop19h 35mDelta

Deal found 4/21

$549

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandSingapore

PDX - SIN

PDXSIN

Portland

jue. 9/4

7:40 pm-7:05 am

1 stop20h 25m

Singapore Changi

jue. 9/25

9:10 am-2:46 pm

1 stop20h 36m

$707

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mar. 6/3

1:45 pm-7:05 am

1 stop26h 20m

Singapore Changi

mar. 6/10

9:10 am-12:58 pm

1 stop18h 48m

$757

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

vie. 10/3

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

dom. 10/26

9:00 am-8:10 am

Nonstop14h 10m

$762

PortlandSingapore

PDX - SIN

PDXSIN

Portland

mié. 10/15

3:25 pm-11:20 pm

2 stops40h 55m

Singapore Changi

mar. 10/28

2:20 am-9:34 am

2 stops22h 14m

$780

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mar. 10/7

2:55 pm-7:05 am

1 stop25h 10m

Singapore Changi

mar. 10/21

9:45 am-6:36 pm

2 stops23h 51m

$790

PortlandSingapore

PDX - SIN

PDXSIN

Portland

mar. 5/13

9:10 am-5:00 am

2 stops28h 50m

Singapore Changi

mar. 5/20

7:30 am-4:59 pm

2 stops24h 29m

$808

PortlandSingapore

PDX - SIN

PDXSIN

Portland

mié. 9/17

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

mar. 9/30

9:15 am-1:50 pm

1 stop19h 35m

$836

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mié. 10/8

11:35 pm-1:20 pm

1 stop22h 45m

Singapore Changi

mié. 10/22

10:25 am-7:15 pm

1 stop23h 50m

$847

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

dom. 8/31

1:40 am-12:35 pm

1 stop19h 55m

Singapore Changi

dom. 9/7

2:00 am-7:45 pm

1 stop32h 45m

$871

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mar. 5/6

12:50 pm-11:40 pm

1 stop19h 50m

Singapore Changi

dom. 5/11

10:30 pm-10:40 am

1 stop27h 10m

$880

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 49 results

...

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.

Cheapflights Insights

Everything you need to know about your flight from Washington to Singapore

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 SG?

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

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

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 a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air from Washington to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

STARLUX Airlines

9.1

Wonderful

157 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

STARLUX Airlines

9.1

Wonderful

157 reviews

STARLUX Airlines

9.1

Wonderful

157 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

EVA Air

8.4

Very good

1,180 reviews

STARLUX Airlines

9.1

Wonderful

157 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

Korean Air

8.4

Very good

1,062 reviews

STARLUX Airlines

9.1

Wonderful

157 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

Japan Airlines

8.3

Very good

1,450 reviews

STARLUX Airlines

9.1

Wonderful

157 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

China Airlines

8.3

Very good

727 reviews

STARLUX Airlines

9.1

Wonderful

157 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

Related info for your journey

How popular is this State of Washington to Singapore flight route?
The Washington to Singapore flight path was viewed by 50 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 Delta ($458), Korean Air ($469), and Japan Airlines ($472).
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

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Washington to Singapore

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest$685	Average$1,126	FlexibilityNo cancel fee	On-time81%
Asiana Airlines	Cheapest$689	Average$778	FlexibilityNo cancel fee	On-time76%
Philippine Airlines	Cheapest$694	Average$782	FlexibilityNo cancel fee	On-time60%
Japan Airlines	Cheapest$716	Average$1,136	FlexibilityNo cancel fee	On-time79%
Korean Air	Cheapest$722	Average$884	FlexibilityNo cancel fee	On-time81%
United Airlines	Cheapest$725	Average$912	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$729	Average$906	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$750	Average$1,223	FlexibilityNo cancel fee	On-timeN/A
China Airlines	Cheapest$899	Average$1,057	FlexibilityNo cancel fee	On-time70%
Alaska Airlines	Cheapest$972	Average$1,075	FlexibilityNo cancel fee	On-time75%

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$458+ Cheap flights from Washington to Singapore

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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington to Singapore with Cheapflights

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Cheap flight deals from Washington to Singapore

Keep the following information in mind while searching for Washington to Singapore flight deals. Data was last updated abril 22, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Washington to Singapore

Cheapest flights from Washington to SingaporeExplore 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 abril 22, 2025.

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 abril 22, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Singapore that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Washington to Singapore

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

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

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 abril 22, 2025.

Rainfall in Singapore by month

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

Temperature in Singapore by month

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

Reviews of airlines servicing Singapore

Get a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air from Washington to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

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

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

How can I find direct flights from Washington to Singapore?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Singapore

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Washington to Singapore

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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 abril 22, 2025.