Cheap Flights from Seattle to Singapore from S$ 351

Frequently Asked Questions

• Which airlines offer the cheapest flights from Seattle (SEA) to Singapore (SIN)?

  Based on Trip.com data, Singapore Airlines offers one-way fares as low as S$ 351 on Cheapest nonstop routes (e.g. SEA to SIN on Tue, Aug 4), while Asiana Airlines offers Cheapest nonstop round-trips from S$ 1,080 departing on Fri, Aug 7 and returning on Mon, Aug 10.

• Which airlines offer direct flights from Seattle to Singapore?

  At the moment, you can catch a direct flight from Seattle to Singapore with the following airlines, including: Singapore Airlines All Nippon Airways Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from Seattle (SEA) to Singapore (SIN)?

  It takes about 16 hours 20 minutes to fly from Seattle (SEA) to Singapore (SIN).

• When is the best time to book flights from Seattle to Singapore?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Singapore is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Seattle to Singapore?

  Based on Trip.com data in the past 4 weeks, there is 4 flight per week flying from Seattle to Singapore. You can check the weekly schedule for popular airlines on this route below: Singapore Airlines: -/M/-/W/T/F/S -- SQ027 (10:48)

• How can I find the best deals on flights from Seattle to Singapore?

  To find best deals on flights from Seattle to Singapore, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Aug 4, with one-way flights priced at just S$ 351.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Singapore Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Singapore travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Seattle to Singapore to get the best price?

  The cheapest months to fly from Seattle to Singapore is September, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from Seattle to Singapore?

  After crunching the numbers on our June flight calendar, it's currently cheapest to fly from Seattle to Singapore on June 23, 2026 with United Airlines, with prices starting at S$ 680.

• Which airports can I fly through when travelling to Singapore from Seattle?

  You can land at any one of the following hubs in Singapore, with Seattle-Tacoma International Airport to Singapore Changi Airport (SEA-SIN) is by far the most common option on this route: Singapore Changi Airport (SIN) Seletar Airport (XSP).

• What is the time difference between Seattle and Singapore?

  The time difference between Singapore and Seattle is 16h.

• How can I change or cancel my flight ticket from Seattle to Singapore?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.