Hi, I've summed up all the key info for Singapore to Seattle flights

Cheapest one-way

$ 469
Singapore Airlines Tue, Nov 10

36% below next 30d avg. ($728)

Cheapest round-trip

$ 759
Air Canada Sun, Nov 1

43% below next 30d avg. ($1,322)

When to travel

November Cheapest month
July Peak month

Fastest flight

14h 10m Avg: 14h 10m

Recommended airlines

With a lowest one-way fare of $469 , travelers can expect an average price of $728 for upcoming trips, while round-trip tickets start at $759 . Flights typically take around 14h 10m , but the fastest nonstop option completes the journey in just 14h 10m minutes. There are 5 flights weekly on this route. You can arrive at any of the following airports in Seattle: Seattle-Tacoma International Airport (SEA) , King County (Boeing Field) International Airport (BFI) , and Kenmore Air Harbor Seaplane Base (LKE) . Flights from Singapore Changi Airport to Seattle-Tacoma International Airport (SIN-SEA) are by far the most popular option for this route. To secure the best rates, booking 40 days in advance is recommended, and the cheapest travel days are Tuesday, Wednesday, and Saturday .

Updated 2d ago · This content is an AI-powered summary based on Trip.com data. Prices and availability are subject to change. Please refer to actual prices, availability, and travel conditions.

Explore the cheapest one-way and round-trip flights from Singapore to Seattle over the next 90 days, with one-way fares from $469 and round-trip from $759. Based on Trip.com's latest 7-day flight data.

Flight.News
Flights from Singapore to Seattle operate an average of 1 times per day over the past 7 days, with a 0.0% on-time departure rate and a 100.0% on-time arrival rate.

Which airlines are the most popular for Singapore to Seattle flights?

The most popular airlines flying from Singapore to Seattle are STARLUX Airlines, Air Canada, and United Airlines, among 7 carriers on this route. Singapore Airlines offers the lowest fares. Based on Trip.com's flight booking data from the previous 12 months.
STARLUX Airlines logo STARLUX Airlines
Air Canada logo Air Canada
United Airlines logo United Airlines
Singapore Airlines logo Singapore Airlines
EVA Air logo EVA Air
Asiana Airlines logo Asiana Airlines
China Airlines logo China Airlines
Airlines are determined based on actual purchased flight tickets from Singapore to Seattle according to previous 12 months data from Trip.com.

Flight Info | Singapore to Seattle

The distance between Singapore and Seattle is approximately 12,993.8 km. It takes around 14 hours 10 minutes on average to fly from Singapore to Seattle. Based on Trip.com's data travel demand peaks in July. The off-season for travel is November.

Cheapest one-way flight price $469
Cheapest round-trip ticket price $759
Off-season for travel November
Peak season for travel July
Flight distance 12,993.8 km
Average flight time 14 hours 10 minutes
Popular airline STARLUX Airlines
Frequency ~4/week
Flight statistics for the Singapore–Seattle route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com price insights on flights from Singapore to Seattle

Which month has the cheapest one-way flights from Singapore to Seattle?

The average price of one-way flights from Singapore to Seattle purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Singapore to Seattle is September, with an average price of $533; while the month with the highest flight price is usually June, with an average price of up to $951.

$951
$742
$533
$324
  • $533
    Sep
  • $549
    Oct
  • $598
    Nov
  • $640
    Dec
  • $686
    Jan
  • $627
    Feb
  • $780
    Mar
  • $682
    Apr
  • $703
    May
  • $951
    Jun
  • $645
    Jul
  • $731
    Aug

Frequently Asked Questions

  • What are the cheapest flights from Singapore to Seattle (SIN-SEA)?

    Based on Trip.com data, Singapore Airlines offers one-way fares as low as $469 on Cheapest nonstop routes (e.g. SIN to SEA on Tue, Nov 10), while Air Canada offers Cheapest nonstop round-trips from $759 departing on Sun, Nov 1 and returning on Thu, Nov 5.
  • At the moment, you can catch a nonstop flight from Singapore to Seattle with the following airlines, including: Singapore Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 14 hours 10 minutes to fly from Singapore (SIN) to Seattle (SEA).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Singapore to Seattle 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.
  • Based on Trip.com data in the past 4 weeks, there is 5 flight per week flying from Singapore to Seattle. You can check the weekly schedule for popular airlines on this route below: Singapore Airlines: -/M/-/W/T/F/S -- SQ028 (09:23)
  • To find best deals on flights from Singapore to Seattle, 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, Nov 10, with one-way flights priced at just $469.
    · 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 Seattle travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Singapore to Seattle is November, when demand for travel is lower.
  • After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Singapore to Seattle on September 17, 2026 with Air Canada, with prices starting at $467.
  • You can arrive at any of the following airports in Seattle: Seattle-Tacoma International Airport (SEA), King County (Boeing Field) International Airport (BFI), and Kenmore Air Harbor Seaplane Base (LKE). Flights from Singapore Changi Airport to Seattle-Tacoma International Airport (SIN-SEA) are by far the most popular option for this route.
  • The time difference between Seattle and Singapore is 16h.
  • Tickets can only be changed or canceled 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Singapore to Seattle is $728. Fares vary by travel date, airline and availability.
  • Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Singapore to Seattle is $1,322. The final price depends on the outbound and return dates, airline and fare conditions.
  • Enter Singapore and Seattle, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.
  • Scootare the most popular budget airlines flying from Singapore to Seattle. Check baggage, seat and payment fees before comparing the final price.

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
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.
Cancellation/change due to a flight schedule change:
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.