Cheap flights from Seattle to Singapore from $339
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 9/11. 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
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 February is, on average, the cheapest month to fly to Singapore from Seattle, with most prices found around $783. If you aren’t able to travel to Singapore during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $827.
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 $1,092. The most expensive day to fly to Singapore is Friday, with ticket prices averaging around $1,203.
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 weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $989 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 $832 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.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Singapore Changi?
Singapore Airlines, Korean Air, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Singapore Changi
What airlines fly to Singapore?
Singapore Airlines, United Airlines and Korean Air 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 50% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 13 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.
How many flights depart from Seattle to Singapore on average per week?
3 flights are operational weekly from Seattle to Singapore as of July 2025. The most popular departure day for this route is Tue, with 33% of flights per week taking off on this day.
When to book flights from Seattle to Singapore
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 | $339 |
|---|---|
Fastest flight time | 16h 20m |
Direct flights | Mon, Wed, Fri, Sat and Sun |
Airports in Singapore | 1 airport |
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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Singapore Changi Airport is 13 as of July 2025.
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?
Based on momondo bookings for flights between Seattle and Singapore, the leading plane model is Airbus A350-900, making up 77.62% of the total bookings. Other popular models include Boeing 777-300 with 15.71%, Boeing 787-9 Dreamliner with 2.86%, and Boeing 787-10 Dreamliner with 0.95%.
What is the most popular airline from Seattle to Singapore?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Singapore is Singapore Airlines (38% of total bookings). The next most popular airlines are United Airlines (16%), Korean Air (11%), and Air Canada (11%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $663 | Free Cancellation | Rating 8.1 1,320 reviews | |||
| PriceFrom $687 | Free Cancellation | Rating 8.3 1,503 reviews | |||
| PriceFrom $692 | Free Cancellation | Rating 8.2 452 reviews | |||
| PriceFrom $694 | Free Cancellation | Rating 7.2 887 reviews | |||
| PriceFrom $712 | Free Cancellation | Rating 7.1 9,678 reviews | |||
| PriceFrom $725 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $728 | Free Cancellation | Rating 8.4 1,101 reviews | |||
| PriceFrom $750 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $933 | Free Cancellation | Rating 8.3 747 reviews | |||
| PriceFrom $966 | Free Cancellation | Rating 9.1 189 reviews |
Singapore Airlines Flights From Seattle to Singapore
Across 3 Singapore Airlines flights from Seattle to Singapore this week, the average price was $1,074, with the best Singapore Airlines deals starting from $663 round-trip. 1,320 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.