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Seattle-Tacoma International Airport to Singapore Changi Airport flight

Explore the cheapest one-way and round-trip flights from Seattle-Tacoma International Airport to Singapore Changi Airport over the next 90 days, with one-way fares from IDR 5,346,300 and round-trip from IDR 12,396,400. Based on Trip.com's latest 7-day flight data.

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.

Trip.com Price Insights: Flights from Seattle-Tacoma International Airport to Singapore Changi Airport

What is the cheapest month to fly from Seattle-Tacoma International Airport to Singapore Changi Airport?

The data is based on the past 12 months and shows the average one-way ticket prices from Seattle-Tacoma International Airport to Singapore Changi Airport for each month in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest one-way flights from Seattle-Tacoma International Airport to Singapore Changi Airport are usually in April, with an average price of IDR 6,088,400. It is best to avoid December, when the average price can reach IDR 15,443,700.

IDR 15,443,700
IDR 10,766,050
IDR 6,088,400
IDR 1,410,750
    Cheapest
  • IDR 8,095,900
    Oct
  • IDR 9,308,700
    Nov
  • IDR 15,443,700
    Dec
  • IDR 8,979,800
    Jan
  • IDR 10,009,300
    Feb
  • IDR 8,509,300
    Mar
  • IDR 6,088,400
    Apr
  • IDR 9,201,900
    May
  • IDR 12,163,200
    Jun
  • IDR 12,643,700
    Jul
  • IDR 10,090,600
    Aug
  • IDR 8,958,700
    Sep

What is the cheapest day of the week to fly from Seattle-Tacoma International Airport to Singapore Changi Airport?

The data is based on the past 12 months and shows the average ticket prices from Seattle-Tacoma International Airport to Singapore Changi Airport for each day of the week in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest departure day from Seattle-Tacoma International Airport to Singapore Changi Airport is Tuesday, with average prices usually lower than other days. Avoid departing on Wednesday as prices are typically highest on that day.

IDR 12,165,500
IDR 10,504,700
IDR 8,843,900
IDR 7,183,100
  • IDR 11,433,000
    Mon
  • IDR 8,843,900
    Tue
  • IDR 12,165,500
    Wed
  • IDR 10,012,300
    Thu
  • IDR 10,376,000
    Fri
  • IDR 10,154,700
    Sat
  • IDR 8,891,600
    Sun

Which airline offers the cheapest flights from Seattle-Tacoma International Airport to Singapore Changi Airport?

The cheapest airline flying from Seattle-Tacoma International Airport to Singapore Changi Airport is Singapore Airlines (from IDR 5,537,100) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Singapore Airlines
From IDR 5,537,100
United Airlines
From IDR 6,584,000
Korean Air
From IDR 6,652,200
Delta Air Lines
From IDR 6,903,000
All Nippon Airways
From IDR 7,088,400
Asiana Airlines
From IDR 7,265,600
Philippine Airlines
From IDR 7,281,900
American Airlines
From IDR 7,510,900
Japan Airlines
From IDR 8,031,700
Air Canada
From IDR 8,048,000

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What is the flight schedule from Seattle-Tacoma International Airport to Singapore Changi Airport?

Check the schedule for flights from Seattle to Singapore and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule
  1. SQ027

    09:40

    SEA

    17h 5m

    17:45

    SIN

    - M T W T F S
    Search
  2. KE042

    11:00

    SEA

    11h 55m

    Direct

    15:55

    ICN

    S M T W T F S
    Search
  3. KE645

    18:35

    ICN

    6h 40m

    Direct

    00:15

    SIN

    S M T W T F S
  4. UA499

    07:00

    SEA

    2h 19m

    Direct

    09:19

    SFO

    S M T W T F S
    Search
  5. UA029

    10:50

    SFO

    15h 45m

    Direct

    18:35

    SIN

    S M T W T F S
  6. KE042

    11:00

    SEA

    11h 55m

    Direct

    15:55

    ICN

    S M T W T F S
    Search
  7. KE647

    23:15

    ICN

    6h 45m

    Direct

    05:00

    SIN

    S M T W T F S
  8. KE048

    00:10

    SEA

    12h 10m

    Direct

    05:20

    ICN

    S M T - T F -
    Search
  9. KE643

    14:35

    ICN

    6h 50m

    Direct

    20:25

    SIN

    S M T W T F S
  10. UA5402

    20:35

    SEA

    2h 25m

    Direct

    23:00

    SFO

    - M - W T F S
    Search
  11. UA029

    10:50

    SFO

    15h 45m

    Direct

    18:35

    SIN

    S M T W T F S
  12. KE048

    00:10

    SEA

    12h 10m

    Direct

    05:20

    ICN

    S M T - T F -
    Search
  13. KE645

    18:35

    ICN

    6h 40m

    Direct

    00:15

    SIN

    S M T W T F S
  14. KE048

    00:10

    SEA

    12h 10m

    Direct

    05:20

    ICN

    S M T - T F -
    Search
  15. KE647

    23:15

    ICN

    6h 45m

    Direct

    05:00

    SIN

    S M T W T F S
  16. DL197

    13:05

    SEA

    10h 45m

    Direct

    16:50

    ICN

    S M T W T F S
    Search
  17. DL7819

    14:20

    ICN

    6h 10m

    Direct

    19:30

    SIN

    S M T W T F S
  18. KE042

    11:00

    SEA

    11h 55m

    Direct

    15:55

    ICN

    S M T W T F S
    Search
  19. KE643

    14:35

    ICN

    6h 50m

    Direct

    20:25

    SIN

    S M T W T F S
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About Seattle-Tacoma International Airport and Singapore Changi Airport

Learn about Seattle-Tacoma International Airport (SEA) and Singapore Changi Airport (SIN) — including location, terminals, transportation, and travel tips.

Flight distance 12,993.6km
Cheapest one-way ticket price IDR 5,346,300
Cheapest return ticket price IDR 12,396,400

FAQs for Seattle-Tacoma International Airport to Singapore Changi Airport Flights

  • How many daily flights are there from Seattle-Tacoma International Airport (SEA) to Singapore Changi Airport (SIN)?

    There are around 1 daily flights from Seattle-Tacoma International Airport (SEA) to Singapore Changi Airport (SIN).
  • The earliest flight from Seattle-Tacoma International Airport to Singapore Changi Airport departs at 09:40, and the last departs at 09:55, with about 1 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Seattle-Tacoma International Airport (SEA) to Singapore Changi Airport (SIN) is quite popular. Without considering departure times or holidays, tickets cost around IDR 28,560,500 in December, the most expensive month to book this route.
    • The distance from Singapore Changi Airport to downtown is about 17km, by taxi about 30 minutes.
    • The distance from Seletar Airport to downtown is about 15km, by taxi about 30 minutes.
  • Singapore Airlines is a very popular airline operating an average of 582 flights per month.
  • One-way flights from Seattle-Tacoma International Airport to Singapore Changi Airport currently start from IDR 5,812,500, and round-trip fares start from IDR 12,396,400. The current lowest fare is a Singapore Airlines flight departing on Sat, Nov 28; prices may vary depending on availability.
  • Yes. Singapore Airlines operate direct flights from Seattle-Tacoma International Airport to Singapore Changi Airport, with an average flight time of 16 hours 10 minutes, and around 5 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Seattle-Tacoma International Airport to Singapore Changi Airport is IDR 12,915,700. Prices may vary depending on the departure date, airline, and availability.
  • Seattle-Tacoma International Airport to Singapore Changi Airport operates around 5 weekly flights, mainly by Singapore Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Seattle-Tacoma International Airport and Singapore Changi Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

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 on 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, Wi-Fi, 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 the 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.