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Cheap flights from Seattle to Singapore from $347

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 9/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Singapore

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Singapore.
Singapore Airlines Logo
10:15 am - 5:35 pmSEA-SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:45 amSIN-SEA
14h 45mnonstop
$610Singapore Airlines
Find Deal
Fri, Sep 26 - Fri, Oct 10
Singapore Airlines Logo
10:15 am - 5:35 pmSEA-SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:45 amSIN-SEA
14h 45mnonstop
$628Singapore Airlines
Find Deal
Thu, Oct 2 - Thu, Oct 9
Air Canada Logo
2:55 pm - 7:05 amSEA-SIN
25h 10m1 stop
Air Canada Logo
9:10 am - 10:13 pmSIN-SEA
28h 03m1 stop
$712Air Canada
Find Deal
Thu, May 8 - Sun, May 18
Air Canada Logo
7:15 pm - 7:05 amSEA-SIN
20h 50m1 stop
Air Canada Logo
9:10 am - 10:13 pmSIN-SEA
28h 03m1 stop
$715Air Canada
Find Deal
Thu, May 8 - Sun, May 18
Korean Air Logo
12:50 pm - 11:40 pmSEA-SIN
19h 50m1 stop
Korean Air Logo
1:10 am - 10:40 amSIN-SEA
24h 30m1 stop
$720Korean Air
Find Deal
Tue, Apr 29 - Mon, May 12
Asiana Airlines Logo
2:15 pm - 9:30 pmSEA-SIN
40h 15m1 stop
Asiana Airlines Logo
10:50 pm - 12:30 pmSIN-SEA
28h 40m1 stop
$730Asiana Airlines
Find Deal
Mon, May 12 - Mon, May 19
Asiana Airlines Logo
2:15 pm - 9:30 pmSEA-SIN
40h 15m1 stop
Asiana Airlines Logo
10:50 pm - 12:30 pmSIN-SEA
28h 40m1 stop
$757Asiana Airlines
Find Deal
Mon, May 12 - Wed, May 21
Korean Air Logo
6:10 am - 11:40 pmSEA-SIN
26h 30m2 stops
Korean Air Logo
1:10 am - 4:08 pmSIN-SEA
29h 58m2 stops
$873Korean Air
Find Deal
Tue, Apr 29 - Mon, May 12
United Airlines Logo
5:35 pm - 6:15 amSEA-SIN
21h 40m1 stop
United Airlines Logo
11:05 am - 2:25 pmSIN-SEA
18h 20m1 stop
$889United Airlines
Find Deal
Thu, Oct 2 - Tue, Oct 14
United Airlines Logo
8:45 am - 6:15 amSEA-SIN
30h 30m2 stops
United Airlines Logo
8:40 pm - 12:54 amSIN-SEA
19h 14m1 stop
$893United Airlines
Find Deal
Wed, Oct 1 - Thu, Oct 9

Korean Air flights from Seattle to Singapore

Our best Korean Air deals on Seattle to Singapore flight tickets
Korean Air
Apr 29
SEA12:50 pmSeattle/Tacoma Intl
19h 50m
1 stop
SIN11:40 pmSingapore Changi
May 12
SIN1:10 amSingapore Changi
24h 30m
1 stop
SEA10:40 amSeattle/Tacoma Intl
Korean Air
Apr 29
SEA6:10 amSeattle/Tacoma Intl
26h 30m
2 stops
SIN11:40 pmSingapore Changi
May 12
SIN1:10 amSingapore Changi
29h 58m
2 stops
SEA4:08 pmSeattle/Tacoma Intl
Korean Air
Apr 21
SEA12:50 pmSeattle/Tacoma Intl
19h 50m
1 stop
SIN11:40 pmSingapore Changi
Apr 28
SIN7:30 amSingapore Changi
48h 20m
2 stops
SEA4:50 pmSeattle/Tacoma Intl

Asiana Airlines flights from Seattle to Singapore

Our best Asiana Airlines deals on Seattle to Singapore flight tickets
Asiana Airlines
May 12
SEA2:15 pmSeattle/Tacoma Intl
40h 15m
1 stop
SIN9:30 pmSingapore Changi
May 19
SIN10:50 pmSingapore Changi
28h 40m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
Asiana Airlines
May 12
SEA2:15 pmSeattle/Tacoma Intl
40h 15m
1 stop
SIN9:30 pmSingapore Changi
May 21
SIN10:50 pmSingapore Changi
28h 40m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
Asiana Airlines
May 12
SEA2:15 pmSeattle/Tacoma Intl
40h 15m
1 stop
SIN9:30 pmSingapore Changi
May 23
SIN10:50 pmSingapore Changi
28h 40m
1 stop
SEA12:30 pmSeattle/Tacoma Intl

See travel insights to Singapore from

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?

The month of March is, on average, the cheapest month to fly to Singapore from Seattle, with most prices found around $840. If you aren’t able to travel to Singapore during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $863.

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 $1,089. The most expensive day to fly to Singapore is Friday, with ticket prices averaging around $1,207.

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 12 weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $1,065 when searching 12 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 $862 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 April 2025, prices for Seattle to Singapore flights are approximately 22% 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

$347

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 $347. The best round-trip flight deal from Seattle to Singapore found on momondo in the last 72 hours is $610.
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)

  • 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $685Free CancellationRating
8.1
1,288 reviews
Search Singapore Airlines flights
Asiana AirlinesPriceFrom $689Free CancellationRating
8.2
438 reviews
Search Asiana Airlines flights
Philippine AirlinesPriceFrom $694Free CancellationRating
7.2
855 reviews
Search Philippine Airlines flights
Korean AirPriceFrom $722Free CancellationRating
8.4
1,063 reviews
Search Korean Air flights
Japan AirlinesPriceFrom $724Free CancellationRating
8.3
1,440 reviews
Search Japan Airlines flights
United AirlinesPriceFrom $725Free CancellationRating
7.4
8,658 reviews
Search United Airlines flights
DeltaPriceFrom $750Free CancellationRating
8.0
7,918 reviews
Search Delta flights
Air CanadaPriceFrom $755Free CancellationRating
7.0
9,127 reviews
Search Air Canada flights
China AirlinesPriceFrom $899Free CancellationRating
8.2
729 reviews
Search China Airlines flights
Alaska AirlinesPriceFrom $972Free CancellationRating
8.0
9,871 reviews
Search Alaska Airlines flights
  • Singapore Airlines Flights From Seattle to Singapore

    Across 3 Singapore Airlines flights from Seattle to Singapore this week, the average price was $1,133, with the best Singapore Airlines deals starting from $685 round-trip. 1,288 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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