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

United Airlines is the most popular carrier operating from Seattle/Tacoma Intl to Singapore

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

4 flights are operational weekly from Seattle to Singapore as of February 2026. The most popular departure day for this route is Tue, with 25% of flights per week taking off on this day.

What day of the week experiences the fewest flight delays on this route?

Friday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

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 69% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 12 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

What is the most punctual flight time for Seattle to Singapore flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

How often are flights from Seattle to Singapore delayed?

Historically, on average around 25% of flights between Seattle and Singapore have experienced a delay on any given week. The average delay length over the past 12 months has been 94 minutes.

Which airline has the best punctuality record on Seattle to Singapore flights?

According to our data, Singapore Airlines have had the least number of delays on this route over the last 12 months; with about 25% of their flights experiencing any sort of delay.

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

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

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

The number of operators available for flights from Seattle/Tacoma Intl Airport to Singapore is 12 as of February 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Singapore.

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

The travel and health documents you'll need for your trip to Singapore 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$281 Cheap Flights from Seattle to Singapore in 2026

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Enter your travel dates to find the best prices.

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$525Singapore Airlines

Thu, Apr 23 - Thu, Apr 30

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$527Singapore Airlines

Tue, Apr 7 - Fri, Apr 24

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$553Singapore Airlines

Sun, May 3 - Sat, May 16

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$555Singapore Airlines

Fri, Apr 17 - Tue, Apr 28

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$582Singapore Airlines

Fri, May 29 - Sat, Jun 13

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$592Singapore Airlines

Thu, Apr 9 - Thu, Apr 16

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$600Singapore Airlines

Thu, Apr 9 - Thu, Apr 16

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$612Singapore Airlines

Fri, May 8 - Thu, May 21

7:12 am - 6:35 pm

SEA

SIN

20h 23m

1 stop

8:35 pm - 10:39 am

SIN

SEA

29h 04m

1 stop

$613United Airlines

Thu, Apr 9 - Thu, Apr 23

7:12 am - 6:35 pm

SEA

SIN

20h 23m

1 stop

9:00 am - 6:35 pm

SIN

SEA

24h 35m

1 stop

$614United Airlines

Thu, Apr 9 - Thu, Apr 16

United Airlines flights from Seattle to Singapore

Our best United Airlines deals on Seattle to Singapore flight tickets

United Airlines

Apr 9

SEA7:12 amSeattle/Tacoma Intl

20h 23m

1 stop

SIN6:35 pmSingapore Changi

Apr 23

SIN8:35 pmSingapore Changi

29h 04m

1 stop

SEA10:39 amSeattle/Tacoma Intl

$613

United Airlines

Apr 9

SEA7:12 amSeattle/Tacoma Intl

20h 23m

1 stop

SIN6:35 pmSingapore Changi

Apr 16

SIN9:00 amSingapore Changi

24h 35m

1 stop

SEA6:35 pmSeattle/Tacoma Intl

$614

United Airlines

Aug 23

SEA5:15 amSeattle/Tacoma Intl

22h 20m

1 stop

SIN6:35 pmSingapore Changi

Sep 4

SIN11:05 amSingapore Changi

18h 20m

1 stop

SEA2:25 pmSeattle/Tacoma Intl

$621

Philippine Airlines flights from Seattle to Singapore

Our best Philippine Airlines deals on Seattle to Singapore flight tickets

Philippine Airlines

Aug 25

SEA11:10 pmSeattle/Tacoma Intl

18h 55m

1 stop

SIN9:05 amSingapore Changi

Sep 2

SIN2:30 pmSingapore Changi

20h 35m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

$658

Philippine Airlines

Aug 25

SEA11:10 pmSeattle/Tacoma Intl

28h 45m

1 stop

SIN6:55 pmSingapore Changi

Sep 3

SIN10:05 amSingapore Changi

25h 00m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

$661

Philippine Airlines

May 19

SEA11:10 pmSeattle/Tacoma Intl

23h 05m

1 stop

SIN1:15 pmSingapore Changi

Jun 3

SIN2:30 pmSingapore Changi

20h 35m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

$695

Fly from

Fly to

Route

Depart

Return

Price

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 4/23

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Thu 4/30

9:00 am-8:45 am

Nonstop14h 45m

$525

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 4/7

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Fri 4/24

9:00 am-8:45 am

Nonstop14h 45m

$527

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 5/3

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Sat 5/16

9:00 am-8:45 am

Nonstop14h 45m

$553

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Fri 4/17

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Tue 4/28

9:00 am-8:45 am

Nonstop14h 45m

$555

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Fri 5/29

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Sat 6/13

9:00 am-8:45 am

Nonstop14h 45m

$582

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 4/9

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Thu 4/16

9:00 am-8:45 am

Nonstop14h 45m

$592

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 4/9

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Thu 4/16

9:00 am-8:45 am

Nonstop14h 45m

$600

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Fri 5/8

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Thu 5/21

9:00 am-8:45 am

Nonstop14h 45m

$612

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 4/9

7:12 am-6:35 pm

1 stop20h 23m

Singapore Changi

Thu 4/23

8:35 pm-10:39 am

1 stop29h 04m

$613

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 4/9

7:12 am-6:35 pm

1 stop20h 23m

Singapore Changi

Thu 4/16

9:00 am-6:35 pm

1 stop24h 35m

$614

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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

Delays

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 $708. If you aren’t able to travel to Singapore during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $725.

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 $926. The most expensive day to fly to Singapore is Wednesday, with ticket prices averaging around $1,164.

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

Fly from Seattle/Tacoma Intl to Singapore Changi for the best Seattle/Tacoma Intl - Singapore 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 $877 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 $776 on momondo.

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Singapore flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Seattle to Singapore flight deals and tips

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

Best Price Found	$301
Fastest flight time	16h 20m
Direct flights	Mon, Wed, Fri, Sat and Sun
Airports in Singapore	2 airports

The best one-way flight to Singapore from Seattle in the past 72 hours is $301. The best round-trip flight deal from Seattle to Singapore found on momondo in the last 72 hours is $608.

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 are 2 airports in Singapore. From Seattle there are direct flights to Singapore Changi (SIN).

Search flight deals

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Singapore?
Prices for flights from Seattle/Tacoma Intl Airport to Singapore are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Singapore?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Singapore is 12 as of February 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Singapore?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Singapore.
What documentation or ID do you need to fly to Singapore?
The travel and health documents you'll need for your trip to Singapore 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. 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?
momondo data reveals that the most frequently booked plane model on the route from Seattle to Singapore is Airbus A350-900, representing 75.85% of all bookings. The subsequent popular models are Boeing 777-300 at 13.91%, Boeing 787-9 Dreamliner at 5.77%, and Airbus A330-200 at 1.31%.

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 $543	Free Cancellation	Rating 8.2 1,463 reviews	Search Singapore Airlines flights
Philippine Airlines	PriceFrom $650	Free Cancellation	Rating 7.3 961 reviews	Search Philippine Airlines flights
Asiana Airlines	PriceFrom $668	Free Cancellation	Rating 8.1 502 reviews	Search Asiana Airlines flights
Air Canada	PriceFrom $711	Free Cancellation	Rating 7.1 10,750 reviews	Search Air Canada flights
United Airlines	PriceFrom $742	Free Cancellation	Rating 7.4 9,351 reviews	Search United Airlines flights
Delta	PriceFrom $754	Free Cancellation	Rating 7.9 8,242 reviews	Search Delta flights
Korean Air	PriceFrom $755	Free Cancellation	Rating 8.4 1,195 reviews	Search Korean Air flights
Japan Airlines	PriceFrom $792	Free Cancellation	Rating 8.3 1,714 reviews	Search Japan Airlines flights
ANA	PriceFrom $802	Free Cancellation	Rating 8.4 1,103 reviews	Search ANA flights
China Airlines	PriceFrom $933	Free Cancellation	Rating 8.3 808 reviews	Search China Airlines flights

Why use momondo?

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

It is quick and easy to find Seattle to Singapore flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Singapore that suits you.

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

momondo does allow users to show only those flights to Singapore from Seattle which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Singapore from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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 $281

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 3/27. 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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How to get the cheapest flight ticket from Seattle to Singapore

What is the cheapest month to fly to Singapore?

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

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

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

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

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

What airlines fly to Singapore?

How often are flights from Seattle to Singapore delayed?

What is the most punctual flight time for Seattle to Singapore flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Seattle to Singapore flights?

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

Cheap Seattle to Singapore 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

Best airlines flying from Seattle to Singapore

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

Why use momondo?

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

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List of cabin classes available on flights landing in Singapore. Availability may vary depending on flight origin and airline.

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