Trip.com
>
Cheap Flights
>
Singapore
>
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 £220 and round-trip from £518. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Nov 3 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Sat, Nov 7 | Singapore Airlines
      £518 £602
      14% off
      14% off
      £602 £518
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Nov 4 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Sat, Nov 7 | Singapore Airlines
      £518 £602
      14% off
      14% off
      £602 £518
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Nov 10 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Tue, Nov 17 | Singapore Airlines
      £518 £602
      14% off
      14% off
      £602 £518
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Nov 27 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Wed, Dec 2 | Singapore Airlines
      £518
      14% off
      £602 £518
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Nov 28 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Wed, Dec 2 | Singapore Airlines
      £518
      14% off
      £602 £518
    • SEA 10:10
      28h 50m
      1 stop
      SIN 07:00
      Seattle - Singapore | Thu, Nov 26 | Air Canada
      SIN 08:40
      16h 52m
      1 stop
      SEA 09:32
      Singapore - Seattle | Thu, Dec 3 | Air Canada
      £529
      12% off
      £602 £529
    • SEA 19:05
      19h 55m
      1 stop
      SIN 07:00
      Seattle - Singapore | Tue, Nov 17 | Air Canada
      SIN 08:40
      16h 52m
      1 stop
      SEA 09:32
      Singapore - Seattle | Tue, Nov 24 | Air Canada
      £537
      11% off
      £602 £537
    • SEA 19:05
      19h 55m
      1 stop
      SIN 07:00
      Seattle - Singapore | Wed, Nov 4 | Air Canada
      SIN 08:40
      16h 52m
      1 stop
      SEA 09:32
      Singapore - Seattle | Tue, Nov 10 | Air Canada
      £538
      11% off
      £602 £538
    • SEA 19:05
      19h 55m
      1 stop
      SIN 07:00
      Seattle - Singapore | Wed, Nov 11 | Air Canada
      SIN 08:40
      16h 52m
      1 stop
      SEA 09:32
      Singapore - Seattle | Tue, Nov 17 | Air Canada
      £541
      10% off
      £602 £541
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
      SIN 15:00
      6h
      Direct
      SEA 16:00
      Singapore - Seattle | Wed, Nov 4 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest
      SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 17 | Singapore Airlines
      £220 £622
      65% off
      65% off
      £622 £220
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 20 | Singapore Airlines
      £224 £622
      64% off
      64% off
      £622 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 19 | Singapore Airlines
      £224 £622
      64% off
      64% off
      £622 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 23 | Singapore Airlines
      £224
      64% off
      £622 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Nov 28 | Singapore Airlines
      £240
      23% off
      £310 £240
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 13 | Singapore Airlines
      £241
      61% off
      £622 £241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Jan 15 | Singapore Airlines
      £241
      61% off
      £622 £241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 10 | Singapore Airlines
      £245
      61% off
      £622 £245
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 16 | Singapore Airlines
      £246
      60% off
      £622 £246
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 17 | Singapore Airlines
      £220 £622
      65% off
      65% off
      £622 £220
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 20 | Singapore Airlines
      £224 £622
      64% off
      64% off
      £622 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 19 | Singapore Airlines
      £224 £622
      64% off
      64% off
      £622 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 23 | Singapore Airlines
      £224
      64% off
      £622 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Nov 28 | Singapore Airlines
      £240
      23% off
      £310 £240
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 13 | Singapore Airlines
      £241
      61% off
      £622 £241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Jan 15 | Singapore Airlines
      £241
      61% off
      £622 £241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 10 | Singapore Airlines
      £245
      61% off
      £622 £245
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 16 | Singapore Airlines
      £246
      60% off
      £622 £246
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 17 | Singapore Airlines
      £220 £1,113
      80% off
      80% off
      £1,113 £220
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 20 | Singapore Airlines
      £224 £1,113
      80% off
      80% off
      £1,113 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 19 | Singapore Airlines
      £224 £1,113
      80% off
      80% off
      £1,113 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 23 | Singapore Airlines
      £224
      80% off
      £1,113 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 13 | Singapore Airlines
      £241
      78% off
      £1,113 £241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Jan 15 | Singapore Airlines
      £241
      78% off
      £1,113 £241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 10 | Singapore Airlines
      £245
      78% off
      £1,113 £245
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 16 | Singapore Airlines
      £246
      78% off
      £1,113 £246
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 12 | Singapore Airlines
      £343
      69% off
      £1,113 £343
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
      Find more flights
      Find more flights
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 17 | Singapore Airlines
      £220 £622
      65% off
      65% off
      £622 £220
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 20 | Singapore Airlines
      £224 £622
      64% off
      64% off
      £622 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 19 | Singapore Airlines
      £224 £622
      64% off
      64% off
      £622 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 23 | Singapore Airlines
      £224
      64% off
      £622 £224
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Nov 28 | Singapore Airlines
      £240
      23% off
      £310 £240
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 13 | Singapore Airlines
      £241
      61% off
      £622 £241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Jan 15 | Singapore Airlines
      £241
      61% off
      £622 £241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 10 | Singapore Airlines
      £245
      61% off
      £622 £245
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 16 | Singapore Airlines
      £246
      60% off
      £622 £246
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Nov 4 | Singapore Airlines
      £359 £1,323
      73% off
      73% off
      £1,323 £359
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Nov 3 | Singapore Airlines
      £387 £1,323
      71% off
      71% off
      £1,323 £387
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Nov 7 | Singapore Airlines
      £470 £1,323
      64% off
      64% off
      £1,323 £470
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Nov 1 | Singapore Airlines
      £541
      59% off
      £1,323 £541
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Nov 6 | Singapore Airlines
      £637
      52% off
      £1,323 £637
    • SEA 07:00
      21h 15m
      1 stop
      SIN 20:15
      Seattle - Singapore | Sun, Nov 1 | United Airlines
      £272
      79% off
      £1,323 £272
    • SEA 07:00
      21h 15m
      1 stop
      SIN 20:15
      Seattle - Singapore | Mon, Nov 2 | United Airlines
      £272
      79% off
      £1,323 £272
    • SEA 07:00
      21h 15m
      1 stop
      SIN 20:15
      Seattle - Singapore | Wed, Nov 4 | United Airlines
      £275
      79% off
      £1,323 £275
    • SEA 15:40
      23h 15m
      1 stop
      SIN 06:55
      Seattle - Singapore | Thu, Nov 5 | United Airlines
      £279
      79% off
      £1,323 £279
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
      Find more flights
      Find more flights

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 £251. It is best to avoid December, when the average price can reach £636.

£636
£444
£251
£59
    Cheapest
  • £334
    Oct
  • £384
    Nov
  • £636
    Dec
  • £370
    Jan
  • £412
    Feb
  • £351
    Mar
  • £251
    Apr
  • £379
    May
  • £501
    Jun
  • £521
    Jul
  • £416
    Aug
  • £369
    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.

£501
£433
£364
£296
  • £471
    Mon
  • £364
    Tue
  • £501
    Wed
  • £412
    Thu
  • £427
    Fri
  • £418
    Sat
  • £366
    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 £228) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Singapore Airlines
From £228
Korean Air
From £270
United Airlines
From £272
Delta Air Lines
From £280
All Nippon Airways
From £287
Asiana Airlines
From £290
Philippine Airlines
From £296
Air Canada
From £297
American Airlines
From £310
Cathay Pacific
From £333

Find more flights and airlines

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

    Seattle-Tacoma International Airport

    09:40

    SEA

    17h 5m

    17:45

    SIN

    - M T W T F S
    Search

  2. KE042

    Seattle-Tacoma International Airport

    11:00

    SEA

    11h 55m

    Direct

    15:55

    ICN

    S M T W T F S
    Search

  3. KE645

    Incheon International Airport

    18:35

    ICN

    6h 40m

    Direct

    00:15

    SIN

    S M T W T F S

  4. UA499

    Seattle-Tacoma International Airport

    07:00

    SEA

    2h 19m

    Direct

    09:19

    SFO

    S M T W T F S
    Search

  5. UA029

    San Francisco International Airport

    10:50

    SFO

    15h 45m

    Direct

    18:35

    SIN

    S M T W T F S

  6. KE042

    Seattle-Tacoma International Airport

    11:00

    SEA

    11h 55m

    Direct

    15:55

    ICN

    S M T W T F S
    Search

  7. KE647

    Incheon International Airport

    23:15

    ICN

    6h 45m

    Direct

    05:00

    SIN

    S M T W T F S

  8. KE048

    Seattle-Tacoma International Airport

    00:10

    SEA

    12h 10m

    Direct

    05:20

    ICN

    S M T - T F -
    Search

  9. KE643

    Incheon International Airport

    14:35

    ICN

    6h 50m

    Direct

    20:25

    SIN

    S M T W T F S

  10. UA737

    Seattle-Tacoma International Airport

    10:40

    SEA

    2h 19m

    Direct

    12:59

    SFO

    S M T W T F S
    Search

  11. UA001

    San Francisco International Airport

    22:40

    SFO

    15h 35m

    Direct

    06:15

    SIN

    S M T W T F S

  12. AC8801

    Seattle-Tacoma International Airport

    05:40

    SEA

    1h 7m

    Direct

    06:47

    YVR

    S M T - T F S
    Search

  13. AC019

    Vancouver International Airport

    23:15

    YVR

    16h 45m

    Direct

    07:00

    SIN

    - M T W T - S

  14. UA5402

    Seattle-Tacoma International Airport

    20:35

    SEA

    2h 25m

    Direct

    23:00

    SFO

    - M - W T F S
    Search

  15. UA029

    San Francisco International Airport

    10:50

    SFO

    15h 45m

    Direct

    18:35

    SIN

    S M T W T F S

  16. KE048

    Seattle-Tacoma International Airport

    00:10

    SEA

    12h 10m

    Direct

    05:20

    ICN

    S M T - T F -
    Search

  17. KE645

    Incheon International Airport

    18:35

    ICN

    6h 40m

    Direct

    00:15

    SIN

    S M T W T F S

  18. KE048

    Seattle-Tacoma International Airport

    00:10

    SEA

    12h 10m

    Direct

    05:20

    ICN

    S M T - T F -
    Search

  19. KE647

    Incheon International Airport

    23:15

    ICN

    6h 45m

    Direct

    05:00

    SIN

    S M T W T F S
Find more flights and airlines

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 £220
Cheapest return ticket price £518

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 £1,443 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 £240, and round-trip fares start from £518. 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 £532. 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.

Find Cheap Flights with Trip.com

Note: Prices shown on this page are the estimated lowest prices 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 (including taxes, fuel surcharges, 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 have been updated within the last 24 hours—sometimes even in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the cancellation and change policies for each flight ticket during the booking process, including any fees and applicable conditions. Please check 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 according to the airline's ticket policy.
Cancellation/change due to a flight schedule change:
If the flight schedule has changed 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 visit the customer support pages.