Cheap flights from Seattle to Singapore from $282

The month of September is, on average, the cheapest month to fly to Singapore from Seattle, with most prices found around $708. If you aren’t able to travel to Singapore during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $725.

The cheapest day to depart from Seattle to Singapore is on a Sunday when prices can be found for as low as $965. The most expensive day to fly to Singapore is Wednesday, with ticket prices averaging around $1,173.

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 $881 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 $757 on momondo.

There are 3 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.

As of February 2026, prices for Seattle to Singapore flights are approximately 32% cheaper when compared to flights at the same time last year.

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

Singapore Airlines, United Airlines and Air Canada 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 65% 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 93 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.

Friday 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.

Incheon (ICN) was the most common stop: 37% of momondo users choosing 1-stop flights on this route connected there.

Flights via San Francisco (SFO) offer the lowest average round-trip price of $822.

Flights connecting via Manila (MNL) have the shortest average one-way travel time: 19h 15m.

San Francisco (SFO) has the shortest average layover time for this route: 2h 15m.