Cheap flights from Seattle to Singapore from $382

The month of November is, on average, the cheapest month to fly to Singapore from Seattle, 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 $738.

The cheapest day to depart from Seattle to Singapore is on a Tuesday when prices can be found for as low as $902. The most expensive day to fly to Singapore is Monday, with ticket prices averaging around $1,096.

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

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 $862 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 $693 on momondo.

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

As of August 2026, prices for Seattle to Singapore flights are approximately 49% cheaper when compared to flights at the same time last year.

United Airlines and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Singapore Changi

Singapore Airlines, United Airlines and Philippine Airlines 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 80% 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.

Historically, on average around 26% of flights between Seattle and Singapore have experienced a delay on any given week. The average delay length over the past 12 months has been 96 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

Sunday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Singapore Airlines have had the least number of delays on this route over the last 12 months; with about 26% of their flights experiencing any sort of delay.

San Francisco (SFO) was the most common stop: 31% of momondo users choosing 1-stop flights on this route connected there.

Flights via Incheon (ICN) offer the lowest average round-trip price of $797.

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 18h 55m.

Vancouver (YVR) has the shortest average layover time for this route: 2h 15m.