How popular is this Seattle to Singapore flight route?

Within the past month, 83 users have taken a look at flights from Seattle/Tacoma Intl to Singapore Changi.

What are the cheapest airlines flying from Seattle to Singapore round-trip?

Singapore Airlines, at $690, was found to be the cheapest airline from Seattle to Singapore.Alternate airlines to your destination round-trip include Philippine Airlines and Asiana Airlines. Singapore Airlines is priced at 28% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Seattle to Singapore one-way?

For one-way options, check prices for Asiana Airlines. According to our data, you can fly for as low as $375. Users have also found prices from $376 and $387 on Korean Air and Air Canada, respectively.

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.

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).

What are the cheapest flights from Seattle to Singapore?

Looking for the cheapest flight from Seattle to Singapore? While on average our users pay $2,327, our data indicates the cheapest price to be $281. The most popular route (Seattle/Tacoma Intl - Singapore Changi), is priced around $640.

What are the most popular airlines that fly from Seattle to Singapore?

Air Canada, Alaska Airlines and EVA Air are the most popular airlines when flying from Seattle to Singapore.

Where are the most common layover locations when flying from Seattle to Singapore?

Flights departing from Seattle and landing in Singapore layover in Seoul most frequently. Seoul is followed by San Francisco in terms of the most popular layover location on flights from Seattle to Singapore.

Where are the least popular layover locations for Seattle to Singapore flights?

The least popular layover on flights from Seattle to Singapore is Tokyo.

What are some popular things to do or see while on a layover in Seoul?

Dongdaemun Market, Namdaemun Market, and Bukchon Hanok Village are currently the most popular points of interest in Seoul at the moment. Dongdaemun Market, Namdaemun Market and Bukchon Hanok Village are located about 31.6 mi, 29.8 mi, and 30.6 mi, respectively from Incheon Intl if you are interested in checking them out. Those looking to explore during their layover in Seoul can rent a car from Incheon Intl for about $62 per day.

What are some popular points of interest to see during a layover in San Francisco?

San Francisco travelers tend to visit Fisherman's Wharf, Union Square, and Bill Graham Civic Auditorium more than any other notable places. Fisherman's Wharf, Union Square, and Bill Graham Civic Auditorium can be accessed by traveling approximately 13.0 mi, 11.6 mi, and 11.1 mi, respectively from San Francisco. Travelers in need of a car in San Francisco can rent one for about $56 per day.

What is the cheapest day to fly round-trip from Seattle to Singapore?

Flying to your destination on a Sunday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Singapore. Check prices with Cheapflights to find a great deal for your trip.

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

Find a great deal and save up to 75% by booking at least 17 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Seattle to Singapore within the next two weeks, with the cheapest ticket starting at $756.

What is the cheapest month to fly from Seattle to Singapore?

The best pricing can be found in the month of February. Prices to Singapore from Seattle average $959. You can even find prices in February for less than $959, as users have found deals to Singapore from as low as $600. The month of December appears to be one of the more expensive times to travel to Singapore from Seattle. Flying in the targeted month can save you up to 59%.

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

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

How can I find direct flights from Seattle to Singapore?

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

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

Yes. Cheapflights offers flight deals from Seattle 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.

$375+ Flights from Seattle to Singapore

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Find cheap flights from Seattle to Singapore with Cheapflights

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”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Singapore Changi are usually found in February or March, booked 16 days in advance, depart on a Sunday or Tuesday and return on a Monday

Cheap flight deals from Seattle to Singapore

Round-trip from	$690 (FlightHub)
One-way from	$375 (FlightHub)
Popular in	December
Cheapest in	February
Average price	$903
Good round-trip deal	$668 or less
Good one-way deal	$321 or less

From Seattle/Tacoma Intl to Singapore Changi

Search Deals

One-way flight from Seattle/Tacoma Intl to Singapore Changi

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($133 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Singapore Changi.

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Price to beat on a one-way flight from Seattle/Tacoma Intl to Singapore Changi.

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Find flight deals from Seattle to Singapore

Cheapest flights from Seattle to Singapore
Explore the most affordable flight options available from Seattle to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 28, 2025.

vie. 10/310:15 amSEA - SIN

Nonstop16h 20mSingapore Airlines

mar. 10/149:00 amSIN - SEA

Nonstop14h 45mSingapore Airlines

Deal found 7/27

$690

dom. 11/169:30 pmSEA - SIN

1 stop29h 40mPhilippine Airlines

mar. 11/2510:35 amSIN - SEA

1 stop24h 00mPhilippine Airlines

Deal found 7/27

$694

dom. 11/912:10 amSEA - SIN

1 stop29h 45mAsiana Airlines

lun. 11/2411:10 pmSIN - SEA

1 stop30h 45mAsiana Airlines

Deal found 7/27

$707

mar. 9/167:15 pmSEA - SIN

1 stop20h 50mAir Canada

mar. 9/239:10 amSIN - SEA

1 stop20h 06mAir Canada

Deal found 7/27

$712

mar. 8/261:20 pmSEA - SIN

1 stop24h 40mKorean Air

lun. 9/11:10 amSIN - SEA

1 stop24h 30mKorean Air

Deal found 7/27

$714

dom. 9/72:05 pmSEA - SIN

2 stops26h 00mMultiple Airlines

mar. 9/239:10 amSIN - SEA

3 stops25h 04mMultiple Airlines

Deal found 7/26

$754

jue. 11/65:30 amSEA - SIN

1 stop22h 45mUnited Airlines

lun. 11/2410:20 pmSIN - SEA

1 stop18h 39mUnited Airlines

Deal found 7/27

$756

Best flights from Seattle to Singapore
Discover carefully curated flight deals from Seattle to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 28, 2025.

vie. 10/310:15 amSEA - SIN

Nonstop16h 20mSingapore Airlines

mar. 10/149:00 amSIN - SEA

Nonstop14h 45mSingapore Airlines

Deal found 7/27

$690

dom. 9/711:35 pmSEA - SIN

1 stop28h 20mPhilippine Airlines

mar. 9/238:00 pmSIN - SEA

1 stop38h 15mPhilippine Airlines

Deal found 7/27

$697

jue. 8/282:30 pmSEA - SIN

1 stop40h 00mAsiana Airlines

dom. 9/1410:50 pmSIN - SEA

1 stop28h 40mAsiana Airlines

Deal found 7/26

$709

mar. 9/167:15 pmSEA - SIN

1 stop20h 50mAir Canada

mar. 9/239:10 amSIN - SEA

1 stop20h 06mAir Canada

Deal found 7/27

$712

mar. 8/261:20 pmSEA - SIN

1 stop24h 40mKorean Air

lun. 9/11:10 amSIN - SEA

1 stop24h 30mKorean Air

Deal found 7/27

$714

mar. 9/28:37 amSEA - SIN

2 stops24h 43mJapan Airlines

mar. 9/98:05 amSIN - SEA

2 stops21h 54mJapan Airlines

Deal found 7/27

$721

dom. 9/72:05 pmSEA - SIN

2 stops26h 00mMultiple Airlines

mar. 9/239:10 amSIN - SEA

3 stops25h 04mMultiple Airlines

Deal found 7/26

$754

lun. 8/1812:55 pmSEA - SIN

1 stop19h 45mDelta

lun. 8/251:10 amSIN - SEA

1 stop27h 51mDelta

Deal found 7/27

$756

mié. 9/1011:11 amSEA - SIN

2 stops28h 04mUnited Airlines

mar. 9/238:45 amSIN - SEA

2 stops24h 09mUnited Airlines

Deal found 7/27

$761

Last-minute flights from Seattle to Singapore
Discover last-minute flight deals from Seattle to Singapore. Data last updated julio 28, 2025 and is based on user searches.

mié. 8/61:15 amSEA - SIN

1 stop20h 25mSTARLUX Airlines

jue. 8/212:00 pmSIN - SEA

1 stop17h 35mSTARLUX Airlines

Deal found 7/26

$1,304

jue. 8/73:30 pmSEA - SIN

2 stops41h 10mKorean Air

jue. 8/217:30 amSIN - SEA

1 stop18h 20mKorean Air

Deal found 7/26

$736

jue. 8/712:55 pmSEA - SIN

1 stop19h 45mDelta

mié. 8/201:10 amSIN - SEA

1 stop27h 51mDelta

Deal found 7/26

$1,148

jue. 8/71:10 amSEA - SIN

1 stop19h 50mEVA Air

vie. 8/223:10 pmSIN - SEA

1 stop19h 40mEVA Air

Deal found 7/26

$1,258

jue. 8/71:15 amSEA - SIN

1 stop20h 20mMultiple Airlines

mié. 8/2011:55 amSIN - SEA

1 stop19h 40mMultiple Airlines

Deal found 7/26

$1,381

jue. 8/77:05 amSEA - SIN

1 stop21h 05mSingapore Airlines

jue. 8/219:00 amSIN - SEA

Nonstop14h 45mSingapore Airlines

Deal found 7/26

$2,030

jue. 8/76:25 pmSEA - SIN

3 stops32h 35mFiji Airways

jue. 8/211:55 pmSIN - SEA

3 stops48h 17mFiji Airways

Deal found 7/26

$3,282

jue. 8/71:40 amSEA - SIN

2 stops25h 45mChina Airlines

jue. 8/217:25 amSIN - SEA

2 stops27h 20mChina Airlines

Deal found 7/26

$5,074

dom. 8/107:15 pmSEA - SIN

1 stop20h 50mAir Canada

dom. 9/79:10 amSIN - SEA

1 stop20h 06mAir Canada

Deal found 7/25

$719

dom. 8/105:14 pmSEA - SIN

2 stops34h 11mUnited Airlines

dom. 9/711:05 amSIN - SEA

2 stops48h 49mUnited Airlines

Deal found 7/27

$771

lun. 8/1812:55 pmSEA - SIN

1 stop19h 45mDelta

lun. 8/251:10 amSIN - SEA

1 stop27h 51mDelta

Deal found 7/27

$756

mar. 8/261:20 pmSEA - SIN

1 stop24h 40mKorean Air

lun. 9/11:10 amSIN - SEA

1 stop24h 30mKorean Air

Deal found 7/27

$714

One-way flights from Seattle to Singapore
Search for one-way flight options from Seattle to Singapore. Find affordable one-way fares based on user searches. Data last updated julio 28, 2025.

mar. 8/192:30 pmSEA - SIN

1 stop40h 00mAsiana Airlines

Deal found 7/28

$375

jue. 9/412:50 pmSEA - SIN

1 stop19h 50mKorean Air

Deal found 7/28

$376

dom. 9/287:15 pmSEA - SIN

1 stop20h 50mAir Canada

Deal found 7/26

$387

mar. 8/196:25 amSEA - SIN

2 stops32h 50mUnited Airlines

Deal found 7/28

$392

jue. 8/2112:55 pmSEA - SIN

1 stop19h 45mDelta

Deal found 7/28

$396

lun. 9/158:05 amSEA - SIN

3 stops56h 10mMultiple Airlines

Deal found 7/26

$414

mar. 10/2110:15 amSEA - SIN

Nonstop16h 20mSingapore Airlines

Deal found 7/28

$442

mar. 10/141:10 amSEA - SIN

1 stop32h 25mChina Airlines

Deal found 7/27

$514

Fly from

Fly to

Route

Depart

Return

Price

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

vie. 10/3

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

mar. 10/14

9:00 am-8:45 am

Nonstop14h 45m

$690

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

dom. 9/7

11:35 pm-6:55 pm

1 stop28h 20m

Singapore Changi

mar. 9/23

8:00 pm-7:15 pm

1 stop38h 15m

$697

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

jue. 8/28

2:30 pm-9:30 pm

1 stop40h 00m

Singapore Changi

dom. 9/14

10:50 pm-12:30 pm

1 stop28h 40m

$709

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mar. 9/16

7:15 pm-7:05 am

1 stop20h 50m

Singapore Changi

mar. 9/23

9:10 am-2:16 pm

1 stop20h 06m

$712

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mar. 8/26

1:20 pm-5:00 am

1 stop24h 40m

Singapore Changi

lun. 9/1

1:10 am-10:40 am

1 stop24h 30m

$714

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mar. 9/2

8:37 am-12:20 am

2 stops24h 43m

Singapore Changi

mar. 9/9

8:05 am-2:59 pm

2 stops21h 54m

$721

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

dom. 9/7

2:05 pm-7:05 am

2 stops26h 00m

Singapore Changi

mar. 9/23

9:10 am-7:14 pm

3 stops25h 04m

$754

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

lun. 8/18

12:55 pm-11:40 pm

1 stop19h 45m

Singapore Changi

lun. 8/25

1:10 am-2:01 pm

1 stop27h 51m

$756

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mié. 9/10

11:11 am-6:15 am

2 stops28h 04m

Singapore Changi

mar. 9/23

8:45 am-5:54 pm

2 stops24h 09m

$761

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mar. 8/19

2:30 pm-9:30 pm

1 stop40h 00m

$375

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 17 results

The best insider tips for Seattle to Singapore flights

Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Singapore trip

Airports

SEA

Use SEA Spot Saver for free security screening appointments to reduce wait times. Reserve online a few days before your flight.

SIN

For quick city access, use the Grab rideshare app from SIN. It's faster and cheaper than taxis, especially from Terminal 4.

Our travel experts

Yulia Denisyuk

Expert on SIN

Brandon Schultz

Expert on SEA

Best time to book a flight from Seattle to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Seattle 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 Seattle to Singapore

How far ahead should I book a flight from Seattle to Singapore?

Booking 16 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Singapore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Singapore?

Currently, October is the cheapest month in which you can book a flight from Seattle to Singapore (average of $995). Flying from Seattle to Singapore in December is currently the most expensive (average of $1,679). 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 SEA to SIN?

It’s typically best to fly out from Seattle to Singapore at noon. Doing so could potentially save you 12% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Seattle to Singapore?

Travelers seeking maximum savings on their Seattle to Singapore flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What’s the top layover airport for flights from Seattle to Singapore?

Incheon (ICN) – chosen by Cheapflights users on 57% of 1-stop itineraries from Seattle to Singapore on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Singapore?

Incheon (ICN) is the most affordable 1-stop option, with an average round-trip price of $764.

What’s the fastest layover option from Seattle to Singapore?

Flights via Taipei City (TPE) have the shortest average one-way travel time for 1-stop routes: 7h 30m.

Which airport typically offers the quickest layover for flights from Seattle to Singapore?

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average layover time of 3h 19m.

Reviews of airlines servicing Singapore

Read through reviews of airlines operating flights from Seattle to Singapore, such as Korean Air, Japan Airlines, and China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,117 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Korean Air

8.4

Very good

1,117 reviews

Korean Air

8.4

Very good

1,117 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Japan Airlines

8.3

Very good

1,535 reviews

Korean Air

8.4

Very good

1,117 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

China Airlines

8.3

Very good

754 reviews

Korean Air

8.4

Very good

1,117 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Asiana Airlines

8.2

Very good

463 reviews

Korean Air

8.4

Very good

1,117 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Singapore Airlines

8.1

Very good

1,335 reviews

Korean Air

8.4

Very good

1,117 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

How popular is this Seattle to Singapore flight route?
Within the past month, 83 users have taken a look at flights from Seattle/Tacoma Intl to Singapore Changi.
What are the cheapest airlines flying from Seattle to Singapore round-trip?
Singapore Airlines, at $690, was found to be the cheapest airline from Seattle to Singapore.Alternate airlines to your destination round-trip include Philippine Airlines and Asiana Airlines. Singapore Airlines is priced at 28% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Seattle to Singapore one-way?
For one-way options, check prices for Asiana Airlines. According to our data, you can fly for as low as $375. Users have also found prices from $376 and $387 on Korean Air and Air Canada, respectively.
What are the cheapest flights from Seattle to Singapore?
Looking for the cheapest flight from Seattle to Singapore? While on average our users pay $2,327, our data indicates the cheapest price to be $281. The most popular route (Seattle/Tacoma Intl - Singapore Changi), is priced around $640.
Where are the most common layover locations when flying from Seattle to Singapore?
Flights departing from Seattle and landing in Singapore layover in Seoul most frequently. Seoul is followed by San Francisco in terms of the most popular layover location on flights from Seattle to Singapore.
What are some popular things to do or see while on a layover in Seoul?
Dongdaemun Market, Namdaemun Market, and Bukchon Hanok Village are currently the most popular points of interest in Seoul at the moment. Dongdaemun Market, Namdaemun Market and Bukchon Hanok Village are located about 31.6 mi, 29.8 mi, and 30.6 mi, respectively from Incheon Intl if you are interested in checking them out. Those looking to explore during their layover in Seoul can rent a car from Incheon Intl for about $62 per day.
What are some popular points of interest to see during a layover in San Francisco?
San Francisco travelers tend to visit Fisherman's Wharf, Union Square, and Bill Graham Civic Auditorium more than any other notable places. Fisherman's Wharf, Union Square, and Bill Graham Civic Auditorium can be accessed by traveling approximately 13.0 mi, 11.6 mi, and 11.1 mi, respectively from San Francisco. Travelers in need of a car in San Francisco can rent one for about $56 per day.
Where are the least popular layover locations for Seattle to Singapore flights?
The least popular layover on flights from Seattle to Singapore is Tokyo.
Can I find deals for flights from Seattle to Singapore that include hotel bookings?
Yes. In addition to deals on Seattle to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Singapore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Singapore.
Can I find deals for business class flights from Seattle to Singapore?
Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Singapore?
Currently, October is the cheapest month in which you can book a flight from Seattle to Singapore (average of $995). Flying from Seattle to Singapore in December is currently the most expensive (average of $1,679). 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

Alternative routes for Seattle to Singapore

Portland to Singapore flights

Spokane to Singapore flights

Other flights to Singapore

Top 10 airlines flying from Seattle to Singapore

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest$623	Average$1,058	FlexibilityNo cancel fee	On-time81%
Japan Airlines	Cheapest$687	Average$830	FlexibilityNo cancel fee	On-time79%
Asiana Airlines	Cheapest$692	Average$788	FlexibilityNo cancel fee	On-time76%
Philippine Airlines	Cheapest$694	Average$746	FlexibilityNo cancel fee	On-time60%
Air Canada	Cheapest$712	Average$884	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$724	Average$888	FlexibilityNo cancel fee	On-time69%
Korean Air	Cheapest$728	Average$936	FlexibilityNo cancel fee	On-time81%
Delta	Cheapest$750	Average$973	FlexibilityNo cancel fee	On-timeN/A
ANA	Cheapest$849	Average$1,181	FlexibilityNo cancel fee	On-time80%
China Airlines	Cheapest$933	Average$1,113	FlexibilityNo cancel fee	On-time70%

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$375+ Cheap flights from Seattle (SEA) 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Singapore with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Singapore Changi are usually found in February or March, booked 16 days in advance, depart on a Sunday or Tuesday and return on a Monday

Cheap flight deals from Seattle to Singapore

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Seattle to Singapore

Cheapest flights from Seattle to SingaporeExplore the most affordable flight options available from Seattle to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 28, 2025.

Explore the most affordable flight options available from Seattle to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 28, 2025.

Cheapflights Fare Finder

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

The best insider tips for Seattle to Singapore flights

Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Singapore trip

Airports

SEA

SIN

Our travel experts

Best time to book a flight from Seattle to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Seattle with our price prediction graph.

Cheapflights Insights

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

How far ahead should I book a flight from Seattle to Singapore?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Singapore. Price data was last updated on July 25, 2025.

What is the cheapest month to book a flight from Seattle to Singapore?

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

Find hourly flight availability from Seattle 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 julio 28, 2025.

What is the cheapest day to fly from Seattle to Singapore?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Singapore. Price data was last updated on July 20, 2025.

What’s the top layover airport for flights from Seattle to Singapore?

Share of 1-stop round-trip flights from Seattle to Singapore chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Seattle to Singapore?

Average round-trip fare for 1-stop flights from Seattle to Singapore, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Seattle to Singapore?

Shortest average travel time for 1-stop one-way flights from Seattle to Singapore, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Seattle to Singapore?

Average layover duration for 1-stop one-way flights from Seattle to Singapore, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Singapore

Read through reviews of airlines operating flights from Seattle to Singapore, such as Korean Air, Japan Airlines, and China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seattle 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 Seattle to Singapore flight route?

What are the cheapest airlines flying from Seattle to Singapore round-trip?

What are the cheapest airlines to fly from Seattle to Singapore one-way?

What are the cheapest flights from Seattle to Singapore?

Where are the most common layover locations when flying from Seattle to Singapore?

What are some popular things to do or see while on a layover in Seoul?

What are some popular points of interest to see during a layover in San Francisco?

Where are the least popular layover locations for Seattle to Singapore flights?

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

How can I find direct flights from Seattle to Singapore?

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

What is the cheapest month to book a flight from Seattle to Singapore?

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Alternative routes for Seattle to Singapore

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Top 10 airlines flying from Seattle to Singapore

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Cheapest flights from Seattle to Singapore
Explore the most affordable flight options available from Seattle to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 28, 2025.