$451 Cheap Flights from Seattle (SEA) to Singapore (SIN)

You can find cheap one-way flights from $451 and cheap return flights from $869 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) with Expedia. One-way flights generally range between $437 and $6710, and roundtrip flights usually range from $857 to $8366. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.

September is the cheapest month to fly from Seattle, WA (SEA) to Singapore (SIN), with average return fares around $883. This price is about 17% lower than the average throughout the year, as September typically experiences lower travel demand. Other economical months to consider are January and March.*Averages based on flights available on Expedia in the last year.

Singapore Airlines is one of the cheapest airlines offering nonstop flights from Seattle, WA (SEA) to Singapore (SIN) with return tickets starting from around $967. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.

The best times to fly from Seattle to Singapore are September and March, with average return flight prices around $883. September is a great choice as it often features lower fares after the summer rush, while March offers pleasant weather in Singapore.*Prices based on flights available on Expedia in the last year.

You can fly business class between SEA and SIN. Airlines that offer business class service on this route include:

• Emirates
• Qatar Airways
• Cathay Pacific
• Delta Air Lines
• All Nippon Airways
• American Airlines
• Turkish Airlines
• Korean Air
• Hawaiian Airlines
• Air Canada

First class is available with Emirates and British Airways.

A direct, return business class ticket from Seattle (SEA) to Singapore (SIN) typically costs between $10,309 - $14,471. A non-stop, one-way business class flight is usually around $4,149 - $5,978. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.

It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.