What is the cheapest airline that flies from Seattle/Tacoma Intl to Singapore Changi?

Singapore Airlines, Philippine Airlines, and Asiana Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Singapore Changi

What airlines fly to Singapore?

Singapore Airlines, United Airlines and Air Canada are the top three most popular airlines that fly to Singapore from Seattle according to our data. Singapore Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 13 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Seattle to Singapore?

Flights connecting via Manila (MNL) have the shortest average one-way travel time: 18h 50m.

Which layover airport offers the lowest fares from Seattle to Singapore?

Flights via Incheon (ICN) offer the lowest average round-trip price of $793.

How many flights depart from Seattle to Singapore on average per week?

5 flights are operational weekly from Seattle to Singapore as of October 2025. The most popular departure day for this route is Tue, with 20% of flights per week taking off on this day.

Which airport is the most popular layover for flights between Seattle and Singapore?

Incheon (ICN) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Seattle to Singapore?

Doha (DOH) has the shortest average layover time for this route: 2h 05m.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport are updated daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport is 13 as of October 2025.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Singapore Changi Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Singapore Changi Airport.

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

The travel and health documents you'll need for your trip to Singapore Changi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Singapore Changi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$266 Cheap Flights from Seattle to Singapore in 2025/26

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:45 am - 5:45 pmSEA-SIN

17h 00mnonstop

9:00 am - 8:10 amSIN-SEA

14h 10mnonstop

$596Singapore Airlines

Find Deal

Sun, Feb 15 - Thu, Mar 12

9:30 pm - 11:40 pmSEA-SIN

34h 10m1 stop

10:35 am - 6:40 pmSIN-SEA

24h 05m1 stop

$612Philippine Airlines

Find Deal

Sun, Nov 9 - Sun, Nov 23

8:45 am - 5:45 pmSEA-SIN

17h 00mnonstop

9:15 am - 2:18 pmSIN-SEA

21h 03m1 stop

$693Multiple Airlines

Find Deal

Sat, Jan 31 - Mon, Feb 9

8:45 am - 5:45 pmSEA-SIN

17h 00mnonstop

7:00 pm - 12:11 amSIN-SEA

21h 11m1 stop

$694Multiple Airlines

Find Deal

Thu, Feb 5 - Sun, Feb 15

11:50 am - 3:25 pmSEA-SIN

36h 35m1 stop

8:00 am - 10:10 amSIN-SEA

17h 10m1 stop

$697Cathay Pacific

Find Deal

Tue, Mar 31 - Thu, Apr 30

12:10 am - 9:30 pmSEA-SIN

30h 20m1 stop

10:50 pm - 2:55 pmSIN-SEA

31h 05m1 stop

$708Asiana Airlines

Find Deal

Tue, Mar 31 - Wed, Jun 17

12:10 am - 9:55 pmSEA-SIN

29h 45m1 stop

11:10 pm - 1:55 pmSIN-SEA

30h 45m1 stop

$709Asiana Airlines

Find Deal

Sun, Nov 2 - Mon, Nov 10

11:50 am - 12:50 amSEA-SIN

22h 00m1 stop

1:50 am - 10:10 amSIN-SEA

23h 20m1 stop

$715Cathay Pacific

Find Deal

Mon, Mar 30 - Wed, Apr 15

3:40 pm - 7:00 amSEA-SIN

23h 20m1 stop

8:50 am - 10:06 pmSIN-SEA

29h 16m1 stop

$735Air Canada

Find Deal

Thu, Nov 6 - Thu, Nov 13

10:05 am - 7:00 amSEA-SIN

28h 55m1 stop

9:00 pm - 9:31 amSIN-SEA

28h 31m2 stops

$737Air Canada

Find Deal

Tue, Nov 4 - Tue, Nov 18

Singapore Airlines flights from Seattle to Singapore

Our best Singapore Airlines deals on Seattle to Singapore flight tickets

Singapore Airlines

Feb 15

SEA8:45 amSeattle/Tacoma Intl

17h 00m

SIN5:45 pmSingapore Changi

Mar 12

SIN9:00 amSingapore Changi

14h 10m

SEA8:10 amSeattle/Tacoma Intl

$596

Find similar

Singapore Airlines

Feb 7

SEA8:45 amSeattle/Tacoma Intl

17h 00m

SIN5:45 pmSingapore Changi

Feb 26

SIN9:00 amSingapore Changi

14h 10m

SEA7:10 amSeattle/Tacoma Intl

$623

Find similar

Singapore Airlines

Feb 7

SEA8:45 amSeattle/Tacoma Intl

17h 00m

SIN5:45 pmSingapore Changi

Feb 26

SIN9:00 amSingapore Changi

14h 10m

SEA7:10 amSeattle/Tacoma Intl

$626

Find similar

Philippine Airlines flights from Seattle to Singapore

Our best Philippine Airlines deals on Seattle to Singapore flight tickets

Philippine Airlines

Nov 9

SEA9:30 pmSeattle/Tacoma Intl

34h 10m

1 stop

SIN11:40 pmSingapore Changi

Nov 23

SIN10:35 amSingapore Changi

24h 05m

1 stop

SEA6:40 pmSeattle/Tacoma Intl

$612

Find similar

Philippine Airlines

Nov 16

SEA9:30 pmSeattle/Tacoma Intl

29h 40m

1 stop

SIN7:10 pmSingapore Changi

Nov 25

SIN2:10 pmSingapore Changi

20h 30m

1 stop

SEA6:40 pmSeattle/Tacoma Intl

$631

Find similar

Philippine Airlines

Mar 1

SEA9:30 pmSeattle/Tacoma Intl

20h 05m

1 stop

SIN9:35 amSingapore Changi

Mar 12

SIN2:10 pmSingapore Changi

20h 30m

1 stop

SEA7:40 pmSeattle/Tacoma Intl

$636

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 2/15

8:45 am-5:45 pm

Nonstop17h 00m

Singapore Changi

Thu 3/12

9:00 am-8:10 am

Nonstop14h 10m

$596

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 11/9

9:30 pm-11:40 pm

1 stop34h 10m

Singapore Changi

Sun 11/23

10:35 am-6:40 pm

1 stop24h 05m

$612

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sat 1/31

8:45 am-5:45 pm

Nonstop17h 00m

Singapore Changi

Mon 2/9

9:15 am-2:18 pm

1 stop21h 03m

$693

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 2/5

8:45 am-5:45 pm

Nonstop17h 00m

Singapore Changi

Sun 2/15

7:00 pm-12:11 am

1 stop21h 11m

$694

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 3/31

11:50 am-3:25 pm

1 stop36h 35m

Singapore Changi

Thu 4/30

8:00 am-10:10 am

1 stop17h 10m

$697

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 3/31

12:10 am-9:30 pm

1 stop30h 20m

Singapore Changi

Wed 6/17

10:50 pm-2:55 pm

1 stop31h 05m

$708

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 11/2

12:10 am-9:55 pm

1 stop29h 45m

Singapore Changi

Mon 11/10

11:10 pm-1:55 pm

1 stop30h 45m

$709

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 3/30

11:50 am-12:50 am

1 stop22h 00m

Singapore Changi

Wed 4/15

1:50 am-10:10 am

1 stop23h 20m

$715

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 11/6

3:40 pm-7:00 am

1 stop23h 20m

Singapore Changi

Thu 11/13

8:50 am-10:06 pm

1 stop29h 16m

$735

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 11/4

10:05 am-7:00 am

1 stop28h 55m

Singapore Changi

Tue 11/18

9:00 pm-9:31 am

2 stops28h 31m

$737

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle 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

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to Singapore?

The month of September is, on average, the cheapest month to fly to Singapore from Seattle, with most prices found around $725. If you aren’t able to travel to Singapore during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $744.

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Seattle to Singapore is on a Tuesday when prices can be found for as low as $1,052. The most expensive day to fly to Singapore is Monday, with ticket prices averaging around $1,192.

What is the cheapest time of day to depart on your flight to Singapore?

At noon is the cheapest time of day to fly from Seattle to Singapore when you can find flight prices for as low as $1,089. Flying to Singapore at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,226 on average. Flights to Singapore from Seattle in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Seattle/Tacoma Intl to Singapore Changi flight route?

Fly from Seattle/Tacoma Intl to Singapore Changi for the best Seattle/Tacoma Intl - Singapore Changi flight prices

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

You are more likely to see cheaper flights to Singapore from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $923 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from Seattle for as low as $803 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Singapore Changi flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Singapore Changi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to Singapore flight prices changed over time?

As of October 2025, prices for Seattle to Singapore flights are approximately 41% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Singapore

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Singapore according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Singapore (SEA to SIN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Singapore

Best Price Found	$310
Fastest flight time	16h 20m
Direct flights	Mon, Wed, Fri, Sat and Sun
Airports in Singapore	1 airport

The best one-way flight to Singapore from Seattle in the past 72 hours is $310. The best round-trip flight deal from Seattle to Singapore found on momondo in the last 72 hours is $680.

The fastest flight from Seattle to Singapore takes 16h 20m

Direct flights go from Seattle to Singapore on Monday, Wednesday, Friday, Saturday and Sunday. The only airline offering direct flights is Singapore Airlines.

There is 1 airport near Singapore: Singapore Changi (SIN)

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How far is Seattle/Tacoma Intl to Singapore Changi by plane?
Singapore Changi is 8059.6 mi away from Seattle/Tacoma Intl. Typically, this will take 16h 20m by plane in normal conditions.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport is 13 as of October 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Singapore Changi Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Singapore Changi Airport.
What documentation or ID do you need to fly to Singapore Changi Airport?
The travel and health documents you'll need for your trip to Singapore Changi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Singapore Changi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Singapore?
Based on momondo bookings for flights between Seattle and Singapore, the leading plane model is Airbus A350-900, making up 68.99% of the total bookings. Other popular models include Boeing 777-300 with 27.52%, Boeing 787-9 Dreamliner with 1.55%, and Boeing 787-10 Dreamliner with 0.78%.
What is the most popular airline from Seattle to Singapore?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Singapore is Singapore Airlines (45% of total bookings). The next most popular airlines are United Airlines (13%), Air Canada (12%), and Korean Air (10%).

Best airlines flying from Seattle to Singapore

Compare and see reviews for airlines that fly from Seattle to Singapore with momondo

Airline	Rating	Free Cancellation	Price
Singapore Airlines	PriceFrom $597	Free Cancellation	Rating 8.1 1,374 reviews	Search Singapore Airlines flights
Asiana Airlines	PriceFrom $662	Free Cancellation	Rating 8.2 486 reviews	Search Asiana Airlines flights
Philippine Airlines	PriceFrom $668	Free Cancellation	Rating 7.3 918 reviews	Search Philippine Airlines flights
Japan Airlines	PriceFrom $687	Free Cancellation	Rating 8.3 1,576 reviews	Search Japan Airlines flights
Air Canada	PriceFrom $713	Free Cancellation	Rating 7.1 10,245 reviews	Search Air Canada flights
ANA	PriceFrom $718	Free Cancellation	Rating 8.4 983 reviews	Search ANA flights
United Airlines	PriceFrom $724	Free Cancellation	Rating 7.4 8,955 reviews	Search United Airlines flights
Korean Air	PriceFrom $744	Free Cancellation	Rating 8.4 1,147 reviews	Search Korean Air flights
Delta	PriceFrom $750	Free Cancellation	Rating 7.9 7,966 reviews	Search Delta flights
China Airlines	PriceFrom $933	Free Cancellation	Rating 8.3 767 reviews	Search China Airlines flights

Singapore Airlines Flights From Seattle to Singapore
Across 5 Singapore Airlines flights from Seattle to Singapore this week, the average price was $878, with the best Singapore Airlines deals starting from $597 round-trip. 1,374 users have rated Singapore Airlines on momondo, with an average score of 8.1/10.

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Singapore?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Singapore. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Singapore with flexible booking policies on momondo?

All flight searches from Seattle to Singapore on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Singapore?

Once all potential Seattle to Singapore flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Singapore, momondo offers a useful price alert feature which will track prices for flights to Singapore from Seattle and alert you when they change.

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Cheap flights from Seattle to Singapore from $266

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Singapore departing on 2/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Singapore Airlines flights from Seattle to Singapore

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Philippine Airlines flights from Seattle to Singapore

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How to get the cheapest flight ticket from Seattle 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

What is the cheapest month to fly to Singapore?

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Seattle to Singapore is on a Tuesday when prices can be found for as low as $1,052. The most expensive day to fly to Singapore is Monday, with ticket prices averaging around $1,192.

What is the cheapest time of day to depart on your flight to Singapore?

What is the cheapest Seattle/Tacoma Intl to Singapore Changi flight route?

Fly from Seattle/Tacoma Intl to Singapore Changi for the best Seattle/Tacoma Intl - Singapore Changi flight prices

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

What cabin class options are available on Seattle/Tacoma Intl to Singapore Changi flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Singapore Changi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to Singapore flight prices changed over time?

As of October 2025, prices for Seattle to Singapore flights are approximately 41% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Singapore Changi?

Singapore Airlines, Philippine Airlines, and Asiana Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Singapore Changi

What airlines fly to Singapore?

Which airport is the most popular layover for flights between Seattle and Singapore?

Incheon (ICN) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Singapore?

Flights via Incheon (ICN) offer the lowest average round-trip price of $793.

Which layover airport has the shortest travel time from Seattle to Singapore?

Flights connecting via Manila (MNL) have the shortest average one-way travel time: 18h 50m.

Which layover airport has the shortest connection time from Seattle to Singapore?

Doha (DOH) has the shortest average layover time for this route: 2h 05m.

How many flights depart from Seattle to Singapore on average per week?

5 flights are operational weekly from Seattle to Singapore as of October 2025. The most popular departure day for this route is Tue, with 20% of flights per week taking off on this day.

When to book flights from Seattle to Singapore

Cheap Seattle to Singapore (SEA to SIN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Singapore

Best Price Found

Fastest flight time

Direct flights

Airports in Singapore

How far is Seattle/Tacoma Intl to Singapore Changi by plane?

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport?

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport?

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Singapore Changi Airport?

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

What is the most popular plane model from Seattle to Singapore?

What is the most popular airline from Seattle to Singapore?

Best airlines flying from Seattle to Singapore

Compare and see reviews for airlines that fly from Seattle to Singapore with momondo

Singapore Airlines Flights From Seattle to Singapore

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Singapore?

Can I find flights from Seattle to Singapore with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to Singapore?

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

An easier way to manage your Singapore trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Singapore

Fly your favorite airline to Singapore

Airlines are sorted and displayed according to clicks in the past 7 days on momondo