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Cheap flights from Seattle to Singapore
SEA — SIN
26 Nov — 3 Dec1
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Singapore Changi are usually found in September or February, booked 16 days in advance, depart on a Wednesday or Thursday and return on a Monday
Cheap flight deals from Seattle to Singapore
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 October 2025.
Popular in | December |
|---|---|
Cheapest in | September |
Average price | C$ 1,062 |
Good round-trip deal | C$ 978 or less |
Good one-way deal | C$ 455 or less |
Best time to book a flight from Seattle to Singapore
Have a flexible travel schedule? Discover the best time to fly to Singapore from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Singapore
Prices
Delays
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How far ahead should I book a flight from Seattle to Singapore?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Singapore. Price data was last updated on 24 October 2025.
To ensure you get the cheapest price possible for a flight from Seattle to Singapore, you should look to book at least 16 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Seattle to Singapore?
Currently, September is the cheapest month in which you can book a flight from Seattle to Singapore (average of C$ 765). Flying from Seattle to Singapore in December is currently the most expensive (average of C$ 1,134). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to SIN?
Find hourly flight availability from Seattle to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 October 2025.
A simple way to save on the total cost of your ticket is to fly from Seattle to Singapore in the evening. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight at noon.
How often are flights from Seattle to Singapore delayed?
About 23% of weekly flights between Seattle and Singapore have experienced delays in the past year, with the average delay time being 129 minutes.
What is the most punctual flight time for Seattle to Singapore flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Friday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Seattle to Singapore flights?
Over the past year, Singapore Airlines has had the lowest number of delays on this route, with just 22% of flights being delayed.
What’s the top layover airport for flights from Seattle to Singapore?
Share of one-stop round-trip flights from Seattle to Singapore chosen by Cheapflights users in the past 12 months, using the same layover each way.
San Francisco (SFO) – chosen by Cheapflights users on 63% of one-stop itineraries from Seattle to Singapore on Cheapflights.
What’s the fastest layover option from Seattle to Singapore?
Shortest average travel time for 1-stop one-way flights from Seattle to Singapore, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Manila (MNL) have the shortest average one-way travel time for 1-stop routes: 18h 50m.
What’s the fastest layover option from Seattle to Singapore?
Shortest average travel time for 1-stop one-way flights from Seattle to Singapore, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Manila (MNL) have the shortest average one-way travel time for 1-stop routes: 18h 50m.
Which airport typically offers the quickest layover for flights from Seattle to Singapore?
Average layover duration for 1-stop one-way flights from Seattle to Singapore, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Manila (MNL) offer the fastest connection on this route, with an average layover time of 3h 00m.
Reviews of airlines servicing Singapore
Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated 27 October 2025.
Check out reviews from past customers who have flown with Singapore Airlines from Seattle to Singapore to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.7
Comfort
8.0
Entertainment
8.0
Overall
8.1
Boarding
8.3
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJuliet,Oct 2025
PUS - SIN
Food
7.7
Comfort
8.0
Entertainment
8.0
Overall
8.1
Boarding
8.3
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJuliet,Oct 2025
PUS - SIN
Related info for your journey
Find useful and relevant information for your journey from Seattle to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
Complete your trip to Singapore by adding a car rental and/or hotel reservation to your travel itinerary.
Top airline flying from Seattle to Singapore
Discover the top airline that operate flights from Seattle to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 27 October 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Seattle to Singapore?
Cheapflights helps you search for flights from Seattle to Singapore via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Singapore?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Singapore from Seattle.
Can Cheapflights find flights from Seattle to Singapore with no change fees?
Yes! Cheapflights helps users easily find flights from Seattle to Singapore with no change fees.
Can Cheapflights notify me if prices for flights from Seattle to Singapore become cheaper?
Yes! Start tracking prices for Seattle to Singapore flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.