How many flights depart from State of Washington to Singapore on average per week?

The number of flights available between State of Washington and Singapore is 3 per week as of July 2026. The most frequent departure day is Tue, with 33% of weekly flights leaving on this day.

How long is the flight from State of Washington to Singapore?

Flight times from State of Washington to Singapore vary, but if you’re flying out of Seattle and flying into Singapore (one of the most popular routes), then the duration is 16h 20m on average. Another popular route from State of Washington to Singapore is flying from Spokane to Singapore, which will take roughly 38h 59m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Singapore?

Singapore Airlines, United Airlines and Philippine Airlines are the top three most popular airlines that fly to Singapore from State of Washington according to our data. Singapore Airlines is the first choice among our users, with 79% 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 cheapest airline that flies from Washington to Singapore?

Singapore Airlines, Asiana Airlines, and Air Canada are the most popular carriers operating from Washington to Singapore

When did momondo last update prices for flights from Washington to Singapore?

Prices for flights from Washington to Singapore are updated daily.

How many operators does momondo search for flights from Washington to Singapore?

As of July 2026, there are 12 operators available to choose from for flights from Washington to Singapore.

How old do you have to be to fly from Washington 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 Washington to Singapore.

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

The required travel and health documents for your Singapore trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Singapore. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$345 Cheap Flights from Washington to Singapore in 2026

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Find the cheapest flights from Washington to Singapore

Round-trip

One-way

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Cheap round-trip flights

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

$672Singapore Airlines

Thu, Oct 8 - Thu, Oct 15

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$675Singapore Airlines

Thu, Oct 8 - Thu, Oct 15

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$683Singapore Airlines

Thu, Oct 8 - Thu, Oct 15

10:10 am - 5:15 am

PDX

SIN

28h 05m

1 stop

7:00 am - 7:11 pm

SIN

PDX

27h 11m

1 stop

$949Air Canada

Tue, Sep 1 - Sat, Sep 12

7:19 am - 5:15 am

PDX

SIN

30h 56m

2 stops

4:55 pm - 4:36 pm

SIN

PDX

38h 41m

2 stops

$965Multiple Airlines

Mon, Aug 17 - Tue, Sep 1

3:30 pm - 5:15 am

PDX

SIN

22h 45m

1 stop

7:00 am - 2:51 pm

SIN

PDX

22h 51m

1 stop

$986Air Canada

Tue, Aug 11 - Thu, Aug 20

6:21 pm - 12:20 am

GEG

SIN

38h 59m

2 stops

8:05 am - 1:45 pm

SIN

GEG

20h 40m

2 stops

$988Multiple Airlines

Sat, Sep 5 - Sat, Sep 12

6:30 am - 5:25 am

GEG

SIN

30h 55m

2 stops

11:00 pm - 9:37 pm

SIN

GEG

38h 37m

2 stops

$1,421China Eastern

Wed, Nov 11 - Sun, Nov 15

7:00 am - 8:15 pm

GEG

SIN

21h 15m

1 stop

10:10 am - 9:01 pm

SIN

GEG

26h 51m

1 stop

$1,991United Airlines

Wed, Nov 11 - Sun, Nov 15

1:49 pm - 8:00 am

GEG

SIN

26h 11m

2 stops

10:10 am - 9:01 pm

SIN

GEG

26h 51m

1 stop

$1,995United Airlines

Wed, Nov 11 - Sun, Nov 15

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Singapore Airlines flights from State of Washington to Singapore

Our best Singapore Airlines deals on State of Washington to Singapore flight tickets

Singapore Airlines

Oct 8

SEA10:15 amSeattle/Tacoma Intl

16h 20m

SIN5:35 pmSingapore Changi

Oct 15

SIN9:00 amSingapore Changi

14h 45m

SEA8:45 amSeattle/Tacoma Intl

$672

Singapore Airlines

Oct 13

SEA10:15 amSeattle/Tacoma Intl

16h 20m

SIN5:35 pmSingapore Changi

Oct 24

SIN9:00 amSingapore Changi

14h 45m

SEA8:45 amSeattle/Tacoma Intl

$675

Singapore Airlines

Oct 8

SEA10:15 amSeattle/Tacoma Intl

16h 20m

SIN5:35 pmSingapore Changi

Oct 15

SIN9:00 amSingapore Changi

14h 45m

SEA8:45 amSeattle/Tacoma Intl

$683

Korean Air flights from State of Washington to Singapore

Our best Korean Air deals on State of Washington to Singapore flight tickets

Korean Air

Sep 2

SEA2:30 pmSeattle/Tacoma Intl

42h 25m

2 stops

SIN11:55 pmSingapore Changi

Sep 8

SIN1:25 amSingapore Changi

34h 17m

2 stops

SEA8:42 pmSeattle/Tacoma Intl

$786

Korean Air

Sep 2

SEA5:50 pmSeattle/Tacoma Intl

34h 25m

2 stops

SIN7:15 pmSingapore Changi

Sep 9

SIN10:00 pmSingapore Changi

27h 40m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$787

Korean Air

Sep 2

SEA12:50 pmSeattle/Tacoma Intl

25h 10m

1 stop

SIN5:00 amSingapore Changi

Sep 8

SIN1:25 amSingapore Changi

24h 15m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$793

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 10/8

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Thu 10/15

9:00 am-8:45 am

Nonstop14h 45m

$672

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 10/8

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Thu 10/15

9:00 am-8:45 am

Nonstop14h 45m

$675

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 10/8

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Thu 10/15

9:00 am-8:45 am

Nonstop14h 45m

$683

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 9/1

10:10 am-5:15 am

1 stop28h 05m

Singapore Changi

Sat 9/12

7:00 am-7:11 pm

1 stop27h 11m

$949

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/17

7:19 am-5:15 am

2 stops30h 56m

Singapore Changi

Tue 9/1

4:55 pm-4:36 pm

2 stops38h 41m

$965

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 8/11

3:30 pm-5:15 am

1 stop22h 45m

Singapore Changi

Thu 8/20

7:00 am-2:51 pm

1 stop22h 51m

$986

SpokaneSingapore

GEG - SIN

GEGSIN

Spokane

Sat 9/5

6:21 pm-12:20 am

2 stops38h 59m

Singapore Changi

Sat 9/12

8:05 am-1:45 pm

2 stops20h 40m

$988

SpokaneSingapore

GEG - SIN

GEGSIN

Spokane

Wed 11/11

6:30 am-5:25 am

2 stops30h 55m

Singapore Changi

Sun 11/15

11:00 pm-9:37 pm

2 stops38h 37m

$1,421

SpokaneSingapore

GEG - SIN

GEGSIN

Spokane

Wed 11/11

7:00 am-8:15 pm

1 stop21h 15m

Singapore Changi

Sun 11/15

10:10 am-9:01 pm

1 stop26h 51m

$1,991

SpokaneSingapore

GEG - SIN

GEGSIN

Spokane

Wed 11/11

1:49 pm-8:00 am

2 stops26h 11m

Singapore Changi

Sun 11/15

10:10 am-9:01 pm

1 stop26h 51m

$1,995

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington 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

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Other information

What is the cheapest month to fly to Singapore?

The month of November is, on average, the cheapest month to fly to Singapore from State of Washington, with most prices found around $719. If you aren’t able to travel to Singapore during the month of November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $734.

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

The cheapest day to depart from State of Washington to Singapore is on a Tuesday when prices can be found for as low as $871. The most expensive day to fly to Singapore is Wednesday, with ticket prices averaging around $1,093.

What is the cheapest Washington to Singapore flight route?

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

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

You are more likely to see cheaper flights to Singapore from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $859 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from State of Washington for as low as $671 on momondo.

What cabin class options are available on State of Washington to Singapore flights?

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

Can stopping save me money on State of Washington to Singapore flights?

You could potentially save up to 13% on your flight if you consider stops on a State of Washington to Singapore flight.

Cheap State of Washington to Singapore flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Singapore

Best Price Found	$398
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 State of Washington in the past 72 hours is $398. The best round-trip flight deal from State of Washington to Singapore found on momondo in the last 72 hours is $789.

The fastest flight from State of Washington to Singapore takes 16h 20m

Direct flights go from State of Washington 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 State of Washington there are direct flights to Singapore Changi (SIN).

Search flight deals

Frequently asked questions about flying from Washington to Singapore

When did momondo last update prices for flights from Washington to Singapore?
Prices for flights from Washington to Singapore are updated daily.
How many operators does momondo search for flights from Washington to Singapore?
As of July 2026, there are 12 operators available to choose from for flights from Washington to Singapore.
How old do you have to be to fly from Washington 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 Washington to Singapore.
What documentation or ID do you need to fly to Singapore?
The required travel and health documents for your Singapore trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Singapore. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from State of Washington to Singapore?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to Singapore is Airbus A350-900, representing 70.53% of all bookings. The subsequent popular models are Boeing 777-300 at 16.84%, Boeing 787-9 Dreamliner at 5.26%, and Airbus A330-200 at 2.63%.

Best airlines flying from State of Washington to Singapore

Compare and see reviews for airlines that fly from State of Washington to Singapore with momondo

Airline	Rating	Free Cancellation	Price
Philippine Airlines	PriceFrom $348	Free Cancellation	Rating 7.3 1,011 reviews	Search Philippine Airlines flights
Korean Air	PriceFrom $384	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Singapore Airlines	PriceFrom $507	Free Cancellation	Rating 8.2 1,578 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $534	Free Cancellation	Rating 7.1 11,373 reviews	Search Air Canada flights
Delta	PriceFrom $548	Free Cancellation	Rating 7.8 8,479 reviews	Search Delta flights
Asiana Airlines	PriceFrom $610	Free Cancellation	Rating 8.1 553 reviews	Search Asiana Airlines flights
United Airlines	PriceFrom $621	Free Cancellation	Rating 7.4 10,026 reviews	Search United Airlines flights
ANA	PriceFrom $750	Free Cancellation	Rating 8.3 1,276 reviews	Search ANA flights
Cathay Pacific	PriceFrom $774	Free Cancellation	Rating 7.6 1,425 reviews	Search Cathay Pacific flights
Japan Airlines	PriceFrom $792	Free Cancellation	Rating 8.3 1,881 reviews	Search Japan Airlines flights

Why use momondo?

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

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

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

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

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

Once all potential Washington 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 Washington to Singapore right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Singapore from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Washington to Singapore from $345

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Singapore departing on 9/6. 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 State of Washington to Singapore

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How to get the cheapest flight ticket from State of Washington 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 Washington to Singapore flight route?

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

What cabin class options are available on State of Washington to Singapore flights?

Can stopping save me money on State of Washington to Singapore flights?

What is the cheapest airline that flies from Washington to Singapore?

What airlines fly to Singapore?

How many flights depart from State of Washington to Singapore on average per week?

How long is the flight from State of Washington to Singapore?

Cheap State of Washington to Singapore flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Singapore

Frequently asked questions about flying from Washington to Singapore

Best airlines flying from State of Washington to Singapore

Compare and see reviews for airlines that fly from State of Washington to Singapore with momondo

Why use momondo?

An easier way to manage your Singapore trip

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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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