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Cheap Flights from Seattle (SEA) to Singapore (SINS)

Compare Seattle / Tacoma International to Singapore flight deals

Find the cheapest month or even day of the year to fly to Singapore

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Flight deals from Seattle / Tacoma International to Singapore

Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International to Singapore? Find the lowest prices on one-way and return tickets right here.
Singapore.$989 per passenger.Departing Sat, 20 Sep, returning Sat, 11 Oct.Return flight with Singapore Airlines.Outbound direct flight with Singapore Airlines departs from Seattle / Tacoma International on Sat, 20 Sep, arriving in Singapore Changi.Inbound direct flight with Singapore Airlines departs from Singapore Changi on Sat, 11 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $989, select.
Singapore.$1,048 per passenger.Departing Thu, 12 Feb, returning Thu, 26 Feb.Return flight with Singapore Airlines.Outbound direct flight with Singapore Airlines departs from Seattle / Tacoma International on Thu, 12 Feb, arriving in Singapore Changi.Inbound direct flight with Singapore Airlines departs from Singapore Changi on Thu, 26 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,048, select.
Singapore.$1,048 per passenger.Departing Tue, 28 Oct, returning Thu, 6 Nov.Return flight with Singapore Airlines.Outbound direct flight with Singapore Airlines departs from Seattle / Tacoma International on Tue, 28 Oct, arriving in Singapore Changi.Inbound direct flight with Singapore Airlines departs from Singapore Changi on Thu, 6 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,048, select.
Singapore.$1,048 per passenger.Departing Thu, 22 Jan, returning Thu, 5 Feb.Return flight with Singapore Airlines.Outbound direct flight with Singapore Airlines departs from Seattle / Tacoma International on Thu, 22 Jan, arriving in Singapore Changi.Inbound direct flight with Singapore Airlines departs from Singapore Changi on Thu, 5 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,048, select.
Singapore.$1,049 per passenger.Departing Tue, 11 Nov, returning Tue, 25 Nov.Return flight with Singapore Airlines.Outbound direct flight with Singapore Airlines departs from Seattle / Tacoma International on Tue, 11 Nov, arriving in Singapore Changi.Inbound direct flight with Singapore Airlines departs from Singapore Changi on Tue, 25 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,049, select.
Singapore.$1,055 per passenger.Departing Thu, 26 Feb, returning Thu, 5 Mar.Return flight with Singapore Airlines.Outbound direct flight with Singapore Airlines departs from Seattle / Tacoma International on Thu, 26 Feb, arriving in Singapore Changi.Inbound direct flight with Singapore Airlines departs from Singapore Changi on Thu, 5 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,055, select.
Singapore.$1,086 per passenger.Departing Thu, 9 Oct, returning Thu, 16 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Thu, 9 Oct, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departs from Singapore Changi on Thu, 16 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,086, select.
Singapore.$1,092 per passenger.Departing Sun, 7 Sep, returning Tue, 23 Sep.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Sun, 7 Sep, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departs from Singapore Changi on Tue, 23 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,092, select.

Find the cheapest month to fly from Seattle / Tacoma International to Singapore

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Singapore flights are currently cheapest in February.
Jul
from $1,389
Aug
from $1,097
Sep
from $1,092
Oct
from $1,086
Nov
from $1,049
Dec
from $1,159
Jan
from $1,103
Feb
from $1,048
Mar
from $1,125
Apr
Find prices
May
Find prices
Jun
from $1,193

Direct flights from Seattle / Tacoma International to Singapore

Alternative Seattle / Tacoma International to Singapore routes

Looking for the cheapest, fastest or easiest route from Seattle / Tacoma International to Singapore? You could fly into the following airports instead.

Seattle to Singapore: Flight information

The things to know before you go.
Cheapest flight found$989
Cheapest month to flySeptember
Average flight time16 hrs, 47 mins
Most popular airlineSingapore Airlines
Average flights per week6

Finding cheap flights from Seattle / Tacoma International to Singapore: Frequently asked questions

There are 2 airports in Singapore: Seletar and Singapore Changi.
The best price we found for a return flight from Seattle / Tacoma International to Singapore is $989. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
16 hours and 47 minutes is the average flight time from Seattle / Tacoma International to Singapore.
Singapore Airlines flies direct from Seattle / Tacoma International to Singapore.
As of July 2025, there are 6 flights per week flying from Seattle / Tacoma International to Singapore.
The cheapest month to fly from Seattle / Tacoma International to Singapore is usually September.
If you're flying from Seattle / Tacoma International Airport, the cheapest airport near Singapore is Singapore Changi – which is 17.9 km away from the centre of Singapore. We've found flights into this airport from $989.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Singapore on Saturday, 20 September 2025.
Yes – the average flight time is 16 hours and 47 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Singapore but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Singapore is around 40 days in advance, so don’t leave your flight to the last minute.
In July, the average temperature is usually around 27°C. May is typically the warmest month in Singapore, when it usually averages around 30°C. You can expect the least rain in February. The coldest month is December, with temperatures averaging 25°C. The rainiest month is December.
Currently, Singapore Airlines offers the cheapest flight tickets to Singapore.

Flying from Seattle-Tacoma International Airport (SEA) to Singapore: what you need to know

  • Expect to be in the air for 14 hours 30 minutes. On average, that's the time it takes for a direct flight from Seattle-Tacoma International Airport to Singapore.

  • The timezone in Singapore is UTC+8. The city is 15 hours ahead of Seattle, where Seattle-Tacoma International Airport is located.

  • With five departures a week between the two airports, Seattle-Tacoma International Airport (SEA) to Changi International Airport (SIN) is the busiest route. Board Singapore Airlines's 08:45 flight to get your trip from SEA to SIN underway.

  • Give yourself plenty of time to catch your SEA to Singapore flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • If you're travelling during a major holiday or another peak period, allow extra time. A good rule is two hours ahead of domestic flights and up to four hours before international departures. Queues at security and check-in will be longer.

  • Direct Seattle-Tacoma International Airport to Singapore tickets are available for booking. Changi International Airport (SIN) will be where your journey ends.

  • Singapore Airlines is a well-known airline that operates direct flights from Seattle-Tacoma International Airport to Singapore.

  • Stopovers are the ideal opportunity to take a break from travelling and possibly even tick a new city off your list. When searching for flight tickets from SEA to Singapore, deselect the 'Direct flights only' box to see where you can stop along the way. Here are some popular options to consider:

    • Ninoy Aquino International Airport (MNL)

    • Taiwan Taoyuan International Airport (TPE)

    • Narita International Airport (NRT)

  • Located around 18 kilometres from the centre of Seattle, SEA can be reached in about 20 minutes by car (depending on traffic). The journey on public transport will take roughly 55 minutes.

  • In search of a hotel near SEA? If you're boarding an early flight from Seattle-Tacoma International Airport to Singapore, these stays will put you moments from your departure gate:

  • 81.27% of flights leaving Seattle-Tacoma International Airport land at their destination on schedule. With its solid on-time performance, you're unlikely to face delays when flying out of SEA.

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Singapore

  • The best price we've seen for a one-way Seattle-Tacoma International Airport to Singapore flight is $495. The cheapest price for a return flight is $989. Keep in mind fares may change due to availability at the time of booking.

  • Book four months before you want to travel. Pricing trends suggest that this is the ideal window for finding cheap flights from SEA to Singapore.

  • The best month for finding cheap Seattle-Tacoma International Airport to Singapore tickets is August. Use the 'Whole month' tool to compare all available prices, then choose the dates with the lowest fares.

  • You don't need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll notify you the moment there's an even bigger deal on cheap flights from SEA to Singapore.

  • Tailor your flights with filters. Select your ideal departure and arrival times, airlines and total journey duration. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest' flights from Seattle-Tacoma International Airport to Singapore.

Airports in Singapore

Changi International Airport (SIN)

  • The distance from Changi International Airport (SIN) to central Singapore is roughly 21 kilometres. It takes about 20 minutes to get to the centre driving.

  • Getting to the centre on public transport will take you around 1 hour.

  • The last thing you need is a long journey to your hotel if you're landing late on a flight from Seattle-Tacoma International Airport to Singapore. Check in to one of these accommodation options near SIN instead:

  • Begin your adventure by picking up a Changi International Airport rental car. Grab your wheels from Avis, Sixt or Green Motion and explore beyond Singapore's usual tourist stops.

  • Booking your ride from Changi International Airport around two weeks in advance of your flight from SEA to Singapore can help you lock in the best possible rate.

Seletar Airport (XSP)

  • After your flight from Seattle-Tacoma International Airport to Singapore has landed, you can get to the city centre in around 25 minutes by car. Central Singapore is roughly 19 kilometres from Seletar Airport (XSP).

  • If you travel by public transport, you'll reach the centre in 1 hour 25 minutes or so.

  • You'll find some comfortable places to rest your head close to XSP. Unwind and get cosy after your SEA to Singapore flight at any of these perfectly located options:

Best time to go to Singapore

  • Carefully consider your dates before booking your flight from Seattle-Tacoma International Airport to Singapore. The city buzzes during peak season, but prices are often higher and attractions can get busy. Visit Singapore in the off-season if you like a quieter vibe.

  • The warmest month in Singapore is May, with temperatures ranging between 25ºC (77ºF) and 31ºC (88ºF). Book your Seattle-Tacoma International Airport to Singapore flight ticket then if that's your idea of comfortable weather.

  • For cooler conditions, search for a cheap ticket from SEA to Singapore in January when temperatures average between 24ºC (75ºF) and 30ºC (86ºF).

More about Singapore

  • When it comes to looking for somewhere to lay your head, you'll find the best stays in Singapore right here. Check out these hotels as soon as you've locked in your flight from Seattle-Tacoma International Airport to Singapore:

  • Gardens by the Bay and Marina Bay Sands are a couple of top attractions to put on your Singapore itinerary. Continue your sightseeing adventures at Universal Studios Singapore.

Plan the rest of your trip from Seattle to Singapore

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.