Question 1

What is the cheapest airline that flies from Singapore Changi to Seattle/Tacoma Intl?

Accepted Answer

Hainan Airlines, China Airlines, and Korean Air are the most popular carriers operating from Singapore Changi to Seattle/Tacoma Intl

Question 2

How far in advance should I book a flight to Seattle?

Accepted Answer

You are more likely to see cheaper flights to Seattle from Singapore when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $874 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Singapore for as low as $805 on momondo.

Question 3

What is the cheapest time of day to depart on your flight to Seattle?

Accepted Answer

Flying to Seattle from Singapore at noon is the least expensive time of day to depart. momondo users have found prices as low as $847 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $1,158. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Question 4

Can stopping save me money on Singapore to Seattle flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Singapore to Seattle.

Question 5

Which layover airport offers the lowest fares from Singapore to Seattle?

Accepted Answer

Flights via San Francisco (SFO) offer the lowest average round-trip price of $801.

Question 6

What is the cheapest Singapore Changi to Seattle/Tacoma Intl flight route?

Accepted Answer

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

Question 7

What airlines fly to Seattle?

Accepted Answer

STARLUX Airlines, Singapore Airlines and EVA Air are the top three most popular airlines that fly to Seattle from Singapore according to our data. STARLUX Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Question 8

How many flights depart from Singapore to Seattle on average per week?

Accepted Answer

The number of flights available between Singapore and Seattle is 4 per week as of December 2025. The most frequent departure day is Tue, with 25% of weekly flights leaving on this day.

Question 9

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

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.

Question 10

How often are flights from Singapore to Seattle delayed?

Accepted Answer

Historically, on average around 21% of flights between Singapore and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 99 minutes.

Question 11

What is the cheapest month to fly to Seattle?

Accepted Answer

In general, October is the cheapest month to fly from Singapore to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $781. If you don’t want to visit Seattle in October, then you should wait until September to fly from Singapore, when ticket prices are also cheap, with an average price of $831.

Question 12

Which layover airport has the shortest connection time from Singapore to Seattle?

Accepted Answer

San Francisco (SFO) has the shortest average layover time for this route: 1h 35m.

Question 13

Which airport is the most popular layover for flights between Singapore and Seattle?

Accepted Answer

Taipei City (TPE) was the most common stop: 69% of momondo users choosing 1-stop flights on this route connected there.

Question 14

What is the most punctual flight time for Singapore to Seattle flights?

Accepted Answer

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.

Question 15

What is the cheapest day to depart on your flight to Seattle?

Accepted Answer

On average, the least expensive day to fly to Seattle from Singapore is on a Friday. momondo users have found tickets for Friday departures for as low as $920. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Singapore because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,471.

Question 16

Which layover airport has the shortest travel time from Singapore to Seattle?

Accepted Answer

Flights connecting via Taipei City (TPE) have the shortest average one-way travel time: 17h 32m.

Question 17

What cabin class options are available on Singapore Changi to Seattle/Tacoma Intl flights?

Accepted Answer

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

Question 18

How have Singapore to Seattle flight prices changed over time?

Accepted Answer

As of December 2025, prices for Singapore to Seattle flights are approximately 5% cheaper when compared to flights at the same time last year.

Question 19

Which airline has the best punctuality record on Singapore to Seattle flights?

Accepted Answer

According to our data, Singapore Airlines have had the least number of delays on this route over the last 12 months; with about 21% of their flights experiencing any sort of delay.

Question 20

When did momondo last update prices for flights from Singapore Changi Airport to Seattle/Tacoma Intl Airport?

Accepted Answer

Prices for flights from Singapore Changi Airport to Seattle/Tacoma Intl Airport are updated daily.

Question 21

How many operators does momondo search for flights from Singapore Changi Airport to Seattle/Tacoma Intl Airport?

Accepted Answer

As of December 2025, there are 4 operators available to choose from for flights from Singapore Changi Airport to Seattle/Tacoma Intl Airport.

Question 22

How old do you have to be to fly from Singapore Changi Airport to Seattle/Tacoma Intl Airport?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Singapore Changi Airport to Seattle/Tacoma Intl Airport.

Question 23

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

Accepted Answer

The travel and health documents you'll need for your trip to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Fastest flight time	14h 10m
Direct flights	Mon, Wed, Fri, Sat and Sun
Airports in Seattle	1 airport

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $761	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
EVA Air	PriceFrom $779	Free Cancellation	Rating 8.4 1,297 reviews	Search EVA Air flights
STARLUX Airlines	PriceFrom $785	Free Cancellation	Rating 8.9 246 reviews	Search STARLUX Airlines flights
Singapore Airlines	PriceFrom $833	Free Cancellation	Rating 8.1 1,414 reviews	Search Singapore Airlines flights

Cheap flights from Singapore to Seattle from $406

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Singapore to Seattle departing on 1/21. 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 Singapore to Seattle

What is the cheapest month to fly to Seattle?

What is the cheapest day to depart on your flight to Seattle?

What is the cheapest time of day to depart on your flight to Seattle?

What is the cheapest Singapore Changi to Seattle/Tacoma Intl flight route?

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

How far in advance should I book a flight to Seattle?

What cabin class options are available on Singapore Changi to Seattle/Tacoma Intl flights?

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

Can stopping save me money on Singapore to Seattle flights?

No. A direct flight is the cheapest option for a flight between Singapore to Seattle.

How have Singapore to Seattle flight prices changed over time?

As of December 2025, prices for Singapore to Seattle flights are approximately 5% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Singapore Changi to Seattle/Tacoma Intl?

Hainan Airlines, China Airlines, and Korean Air are the most popular carriers operating from Singapore Changi to Seattle/Tacoma Intl

What airlines fly to Seattle?

How often are flights from Singapore to Seattle delayed?

Historically, on average around 21% of flights between Singapore and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 99 minutes.

What is the most punctual flight time for Singapore to Seattle flights?

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.

What day of the week experiences the fewest flight delays on this route?

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.

Which airline has the best punctuality record on Singapore to Seattle flights?

According to our data, Singapore Airlines have had the least number of delays on this route over the last 12 months; with about 21% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Singapore and Seattle?

Taipei City (TPE) was the most common stop: 69% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Singapore to Seattle?

Flights via San Francisco (SFO) offer the lowest average round-trip price of $801.

Which layover airport has the shortest travel time from Singapore to Seattle?

Flights connecting via Taipei City (TPE) have the shortest average one-way travel time: 17h 32m.

Which layover airport has the shortest connection time from Singapore to Seattle?

San Francisco (SFO) has the shortest average layover time for this route: 1h 35m.

How many flights depart from Singapore to Seattle on average per week?

The number of flights available between Singapore and Seattle is 4 per week as of December 2025. The most frequent departure day is Tue, with 25% of weekly flights leaving on this day.

When to book flights from Singapore to Seattle

Cheap Singapore to Seattle (SIN to SEA) flight deals and tips

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How far is Singapore Changi to Seattle/Tacoma Intl by plane?

When did momondo last update prices for flights from Singapore Changi Airport to Seattle/Tacoma Intl Airport?

How many operators does momondo search for flights from Singapore Changi Airport to Seattle/Tacoma Intl Airport?

How old do you have to be to fly from Singapore Changi Airport to Seattle/Tacoma Intl Airport?

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

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What is the most popular airline from Singapore to Seattle?

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