Singapore Airlines flights from Seattle to Singapore (SEA - SIN)

SEA — SIN
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheapflights users flying from Seattle to Singapore on Singapore Airlines typically fly into Singapore Changi and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Singapore Airlines flights from Seattle to Singapore in 2025

Find detailed information about Singapore Airlines flights from Seattle to Singapore. Explore the options provided by Singapore Airlines to plan your journey from Seattle to Singapore. Data last updated 15 September 2025.

One-way from

S$ 341

Return from

S$ 834

Popular in

December

Cheapest in

February

Average price (all airlines)

S$ 973
Singapore Airlines
  • Singapore Airlines
  • 20-1
  • Nonstop
  • 17h 00m total
  • Seattle to Singapore
Singapore Airlines
  • Singapore Airlines
  • 5-2-15-2
  • Nonstop
  • 31h 10m total
  • Seattle to Singapore
Highest demand for flights from Seattle/Tacoma Intl to Singapore Changi; 12% potential price increase.
Best time to find cheap flights from Seattle/Tacoma Intl to Singapore Changi; 6% potential price drop.
Average price for all Seattle/Tacoma Intl to Singapore Changi flights (one-way and round-trip).
  • Can I get a flight from Seattle to Singapore on Singapore Airlines for under S$ 800?

    There are 12 flights available on Singapore Airlines from Seattle to Singapore for under S$ 800. These prices can change based on many factors including date and time. To find SEA-SIN flight prices for your dates, click here.

  • How do most travelers feel about Singapore Airlines?

    Cheapflights users who travel with Singapore Airlines (a popular airline from Seattle to Singapore) have rated them a 8.1/10. This rating comes from 1,365 reviews. If you are looking to travel SEA-SIN, search your dates above.

Find Singapore Airlines flight deals from Seattle to Singapore

Cheapest Singapore Airlines flights from Seattle to Singapore
Explore the most affordable Singapore Airlines flight options available from Seattle to Singapore. Find the lowest fares with prices last updated on 15 September 2025.

Thu 30-1009:45SEA - SIN
Nonstop17h 00mSingapore Airlines
Thu 13-1109:00SIN - SEA
Nonstop14h 10mSingapore Airlines
Deal found 14-9S$ 834
Fri 31-1009:45SEA - SIN
Nonstop17h 00mSingapore Airlines
Fri 7-1109:00SIN - SEA
Nonstop14h 10mSingapore Airlines
Deal found 14-9S$ 837
Thu 23-1010:15SEA - SIN
Nonstop16h 20mSingapore Airlines
Thu 30-1009:00SIN - SEA
Nonstop14h 10mSingapore Airlines
Deal found 14-9S$ 874

Travel insights for Singapore Airlines flights from Seattle to Singapore

Get recent, data-driven insights about Singapore Airlines flights from Seattle to Singapore, including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Seattle to Singapore. Price data was last updated on 12 September 2025.

Booking with Singapore Airlines 33 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Singapore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Singapore with Singapore Airlines?

Currently, the most affordable month to book a Singapore Airlines flight from Seattle to Singapore in September, with an average price of S$ 698. Conversely, traveling with Singapore Airlines from Seattle to Singapore in July will be the most expensive, with an average cost of S$ 1,362. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Best time to book a flight from Seattle to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Seattle to Singapore on another airline

Consider alternative airlines that service the Singapore area. Flight routes are based on user searches made on Cheapflights and were last updated on 15 September 2025.

See what others are saying about Singapore Airlines

Read reviews and see what other travellers are saying about their experiences with Singapore Airlines. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Singapore Airlines for your next flight. Reviews last updated 15 September 2025.
Singapore Airlines
8.1
Very Good
1,365 reviews
Overview

Boarding

8.2

Comfort

8.0

Food

7.7

Crew

8.6

Entertainment

8.0

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.