Cheap flights from Seattle to Singapore from $271 BFI, SEA → SIN

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $608 to $884.

At $884, the cheapest return found recently is at the high end of that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 2-night return fares leaving within 3 days of 5 Mar 2027 to compare.

Every date we hold

2 fares on 2 departure dates

Which month looks cheapest?

April 2027 is the cheapest month — from $829.

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 32 days, 6 Oct to 11 Nov, the cheapest one-way we saw each day was $271 to $372.

At $271, the cheapest one-way found recently is at the low end of that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 19 Jan 2027 to compare.

Every date we hold

8 fares on 5 departure dates

Which month looks cheapest?

January 2027 is the cheapest month — from $271.

Return

The cheapest fares were 30 to 59 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Not enough history yet: in 32 days of one-way prices, 6 Oct to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.

How much is a return flight from Seattle to Singapore?

The cheapest return found recently is $884 with Singapore Airlines, 5 Mar 2027 to 7 Mar 2027, found 4 days ago. The cheapest return we hold, of any age, is $829 with Singapore Airlines, 1 Apr 2027 to 4 Apr 2027, found 6 days ago.

How much is a one-way flight from Seattle to Singapore?

The cheapest one-way found recently is $271 with Singapore Airlines, 19 Jan 2027, found 2 days ago. The cheapest one-way fare on each of 5 departure dates is usually $291 to $405.

What is the cheapest month to fly from Seattle to Singapore?

April 2027 is the cheapest month for a return, from $829, 1 Apr 2027 to 4 Apr 2027, found 6 days ago. January 2027 is the cheapest month for a one-way, from $271, 19 Jan 2027, found 2 days ago.

How far ahead should I book a flight from Seattle to Singapore?

In 49 days of prices between 24 Sept and 11 Nov, return fares were cheapest 30 to 59 days before departure.

Is there a direct flight from Seattle to Singapore?

Yes, the cheapest nonstop return found recently is $829 with Singapore Airlines, 1 Apr 2027 to 4 Apr 2027, found 6 days ago. The cheapest nonstop one-way found recently is $271 with Singapore Airlines, 19 Jan 2027, found 2 days ago.

How long is the flight from Seattle to Singapore?

The cheapest nonstop one-way found recently, with Singapore Airlines on 19 Jan 2027, takes 17 h 5 min from Seattle-Tacoma International Airport (SEA) to Changi International Airport (SIN).

Which airlines have the cheapest flights from Seattle to Singapore?

Between 4 Dec and 20 Feb 2027, Singapore Airlines has the cheapest one-way on 3 of the 5 departure dates we hold, and Korean Air on 2.