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Flights from Seattle to Singapore

Search for direct flights from Seattle to Singapore in the next 3 months. Based on Trip.com's latest 7-day flight data, one-way direct flights start at US$319, and round-trip direct flights start at US$751.

      • Cheapest nonstop
        SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Sun, Sep 6 | Singapore Airlines
        SIN 09:00
        14h 45m
        Nonstop
        SEA 08:45
        Singapore - Seattle | Fri, Sep 11 | Singapore Airlines
        US$751 US$1,095
        31% off
        31% off
        US$1,095 US$751
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Fri, Sep 11 | Singapore Airlines
        SIN 09:00
        14h 45m
        Nonstop
        SEA 08:45
        Singapore - Seattle | Tue, Sep 15 | Singapore Airlines
        US$762 US$1,095
        30% off
        30% off
        US$1,095 US$762
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Tue, Sep 8 | Singapore Airlines
        SIN 09:00
        14h 45m
        Nonstop
        SEA 08:45
        Singapore - Seattle | Tue, Sep 15 | Singapore Airlines
        US$793 US$1,095
        28% off
        28% off
        US$1,095 US$793
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Fri, Sep 4 | Singapore Airlines
        SIN 09:00
        14h 45m
        Nonstop
        SEA 08:45
        Singapore - Seattle | Fri, Sep 11 | Singapore Airlines
        US$799
        27% off
        US$1,095 US$799
      • SEA 00:10
        30h 20m
        1 stop
        SIN 21:30
        Seattle - Singapore | Wed, Sep 9 | Asiana Airlines
        SIN 22:50
        31h 25m
        1 stop
        SEA 15:15
        Singapore - Seattle | Sun, Sep 13 | Asiana Airlines
        US$792
        28% off
        US$1,095 US$792
      • SEA 00:10
        30h 20m
        1 stop
        SIN 21:30
        Seattle - Singapore | Mon, Aug 31 | Asiana Airlines
        SIN 22:50
        31h 25m
        1 stop
        SEA 15:15
        Singapore - Seattle | Sun, Sep 6 | Asiana Airlines
        US$798
        27% off
        US$1,095 US$798
      • SEA 00:10
        30h 20m
        1 stop
        SIN 21:30
        Seattle - Singapore | Tue, Aug 25 | Asiana Airlines
        SIN 22:50
        31h 25m
        1 stop
        SEA 15:15
        Singapore - Seattle | Mon, Aug 31 | Asiana Airlines
        US$798
        27% off
        US$1,095 US$798
      • SEA 00:10
        30h 20m
        1 stop
        SIN 21:30
        Seattle - Singapore | Mon, Aug 24 | Asiana Airlines
        SIN 22:50
        31h 25m
        1 stop
        SEA 15:15
        Singapore - Seattle | Mon, Aug 31 | Asiana Airlines
        US$798
        27% off
        US$1,095 US$798
      • SEA 00:10
        30h 20m
        1 stop
        SIN 21:30
        Seattle - Singapore | Mon, Aug 10 | Asiana Airlines
        SIN 22:50
        31h 55m
        1 stop
        SEA 15:45
        Singapore - Seattle | Sun, Aug 16 | Asiana Airlines
        US$798
        27% off
        US$1,095 US$798
      • SEA 00:10
        30h 20m
        1 stop
        SIN 21:30
        Seattle - Singapore | Tue, Sep 8 | Asiana Airlines
        SIN 22:50
        31h 25m
        1 stop
        SEA 15:15
        Singapore - Seattle | Sun, Sep 13 | Asiana Airlines
        US$798
        27% off
        US$1,095 US$798
      • SEA 13:00
        17h 25m
        1 stop
        SIN 14:00
        Seattle - Singapore | Wed, Jul 15 | Normal Airline
        SIN 15:00
        6h
        Nonstop
        SEA 16:00
        Singapore - Seattle | Fri, Jul 17 | Normal Airline
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      • Cheapest nonstop
        SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Wed, Sep 9 | Singapore Airlines
        US$319 US$532
        40% off
        40% off
        US$532 US$319
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Wed, Aug 26 | Singapore Airlines
        US$320 US$532
        40% off
        40% off
        US$532 US$320
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Wed, Aug 19 | Singapore Airlines
        US$350 US$532
        34% off
        34% off
        US$532 US$350
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Sat, Aug 15 | Singapore Airlines
        US$368
        31% off
        US$532 US$368
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Fri, Sep 4 | Singapore Airlines
        US$369
        31% off
        US$532 US$369
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Sun, Aug 30 | Singapore Airlines
        US$369
        31% off
        US$532 US$369
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Wed, Sep 2 | Singapore Airlines
        US$370
        30% off
        US$532 US$370
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Fri, Sep 11 | Singapore Airlines
        US$371
        30% off
        US$532 US$371
      • SEA 10:15
        16h 20m
        Nonstop
        SIN 17:35
        Seattle - Singapore | Mon, Sep 7 | Singapore Airlines
        US$378
        28% off
        US$532 US$378
      • SEA 09:00
        30h 15m
        1 stop
        SIN 06:15
        Seattle - Singapore | Thu, Sep 3 | United Airlines
        US$388
        27% off
        US$532 US$388
      • SEA 13:00
        17h 25m
        1 stop
        SIN 14:00
        Seattle - Singapore | Wed, Jul 15 | Normal Airline
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Displayed flight fares from Seattle to Singapore are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Cheapest airlines flights from Seattle to Singapore

You can choose from 3 airlines that fly from Seattle to Singapore, including Asiana Airlines, STARLUX Airlines, and EVA Air. Singapore Airlines has lowest fares on this route.
Asiana Airlines logo Asiana Airlines
STARLUX Airlines logo STARLUX Airlines
EVA Air logo EVA Air
Airlines are determined based on actual purchased flight tickets from Seattle to Singapore according to previous 12 months data from Trip.com.

Seattle to Singapore Flight Details

The distance between Seattle and Singapore is about 12,993.8 km. The average flying time from Seattle to Singapore is around 16 hours 20 minutes. Based on Trip.com's latest data, travel demand is highest in January. The off-season for travel is September.

Cheapest one-way flight priceUS$319
Cheapest return ticket priceUS$751
Cheapest monthSeptember
Peak season for travelJanuary
Flight distance12,993.8 km
Average flight time16 hours 20 minutes
Popular airlineAsiana Airlines
Flight statistics for the Seattle–Singapore route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from Seattle to Singapore

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

Average monthly one-way flight prices from Seattle to Singapore, based on bookings made by Trip.com users over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Seattle to Singapore is April, with an average price of US$330; while the month with the highest flight price is usually July, with an average price of up to US$915.

US$915
US$623
US$330
US$38
    Cheapest
  • US$915
    Jul
  • US$524
    Aug
  • US$487
    Sep
  • US$509
    Oct
  • US$504
    Nov
  • US$835
    Dec
  • US$486
    Jan
  • US$542
    Feb
  • US$461
    Mar
  • US$330
    Apr
  • US$498
    May
  • US$658
    Jun

Frequently Asked Questions

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

    Based on Trip.com data, Singapore Airlines offers one-way fares as low as US$319 on Cheapest nonstop routes (e.g. SEA to SIN on Wed, Sep 9), while Singapore Airlines offers Cheapest nonstop round-trips from US$751 departing on Sun, Sep 6 and returning on Fri, Sep 11.
  • At the moment, you can catch a nonstop flight from Seattle to Singapore 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 about 16 hours 20 minutes to fly 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.
  • 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)
  • 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 Wed, Sep 9, with one-way flights priced at just US$319.
    · 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.
  • The cheapest months to fly from Seattle to Singapore is September, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Seattle to Singapore on July 21, 2026 with Asiana Airlines, with prices starting at US$391.
  • 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).
  • The time difference between Singapore and Seattle 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.

Trip.com Airline Insights on Flights from Seattle to Singapore

Which airline offers the cheapest direct flights from Seattle to Singapore?

Data is based on the average price of all nonstop flights from Seattle to Singapore on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, Philippine Airlines provides the lowest-priced direct flights from Seattle to Singapore, with fares starting at US$415.

US$253
US$415
US$578
US$740
US$902
Philippine Airlines
US$415
Philippine Airlines
Singapore Airlines
US$514
Singapore Airlines
Asiana Airlines
US$554
Asiana Airlines
United Airlines
US$561
United Airlines
Korean Air
US$680
Korean Air
EVA Air
US$902
EVA Air

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

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.