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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 £ 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 | Thu, Nov 5 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Mon, Nov 9 | Singapore Airlines
      £ 518 £ 602
      14% off
      14% off
      £ 602 £ 518
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Nov 6 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Sun, Nov 8 | Singapore Airlines
      £ 518 £ 602
      14% off
      14% off
      £ 602 £ 518
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Thu, Nov 12 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Thu, Nov 19 | Singapore Airlines
      £ 518 £ 602
      14% off
      14% off
      £ 602 £ 518
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Nov 29 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Fri, Dec 4 | Singapore Airlines
      £ 518
      14% off
      £ 602 £ 518
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Mon, Nov 30 | Singapore Airlines
      SIN 08:55
      14h 10m
      Direct
      SEA 07:05
      Singapore - Seattle | Fri, Dec 4 | Singapore Airlines
      £ 518
      14% off
      £ 602 £ 518
    • SEA 10:10
      28h 50m
      1 stop
      SIN 07:00
      Seattle - Singapore | Sat, Nov 28 | Air Canada
      SIN 08:40
      16h 52m
      1 stop
      SEA 09:32
      Singapore - Seattle | Sat, Dec 5 | Air Canada
      £ 529
      12% off
      £ 602 £ 529
    • SEA 19:05
      19h 55m
      1 stop
      SIN 07:00
      Seattle - Singapore | Thu, Nov 19 | Air Canada
      SIN 08:40
      16h 52m
      1 stop
      SEA 09:32
      Singapore - Seattle | Thu, Nov 26 | Air Canada
      £ 537
      11% off
      £ 602 £ 537
    • SEA 19:05
      19h 55m
      1 stop
      SIN 07:00
      Seattle - Singapore | Fri, Nov 6 | Air Canada
      SIN 08:40
      16h 52m
      1 stop
      SEA 09:32
      Singapore - Seattle | Thu, Nov 12 | Air Canada
      £ 538
      11% off
      £ 602 £ 538
    • SEA 10:10
      28h 50m
      1 stop
      SIN 07:00
      Seattle - Singapore | Sat, Nov 7 | Air Canada
      SIN 08:40
      21h 57m
      1 stop
      SEA 14:37
      Singapore - Seattle | Sat, Nov 14 | Air Canada
      £ 538
      11% off
      £ 602 £ 538
    • 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
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    • Cheapest
      SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 17 | Singapore Airlines
      £ 220 £ 745
      70% off
      70% off
      £ 745 £ 220
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 19 | Singapore Airlines
      £ 221 £ 745
      70% off
      70% off
      £ 745 £ 221
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 20 | Singapore Airlines
      £ 221 £ 745
      70% off
      70% off
      £ 745 £ 221
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 13 | Singapore Airlines
      £ 241
      68% off
      £ 745 £ 241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 10 | Singapore Airlines
      £ 244
      67% off
      £ 745 £ 244
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Jan 15 | Singapore Airlines
      £ 245
      67% off
      £ 745 £ 245
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 16 | Singapore Airlines
      £ 246
      67% off
      £ 745 £ 246
    • SEA 11:00
      21h 15m
      1 stop
      SIN 00:15
      Seattle - Singapore | Thu, Nov 26 | Korean Air
      £ 265
      23% off
      £ 343 £ 265
    • SEA 10:40
      29h 20m
      1 stop
      SIN 08:00
      Seattle - Singapore | Thu, Nov 26 | United Airlines
      £ 268
      22% off
      £ 343 £ 268
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
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    • Cheapest nonstop
      SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 17 | Singapore Airlines
      £ 220 £ 1,066
      79% off
      79% off
      £ 1,066 £ 220
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 19 | Singapore Airlines
      £ 221 £ 1,066
      79% off
      79% off
      £ 1,066 £ 221
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 20 | Singapore Airlines
      £ 221 £ 1,066
      79% off
      79% off
      £ 1,066 £ 221
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 13 | Singapore Airlines
      £ 241
      77% off
      £ 1,066 £ 241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 10 | Singapore Airlines
      £ 244
      77% off
      £ 1,066 £ 244
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Jan 15 | Singapore Airlines
      £ 245
      77% off
      £ 1,066 £ 245
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 16 | Singapore Airlines
      £ 246
      77% off
      £ 1,066 £ 246
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Nov 27 | Singapore Airlines
      £ 299
      72% off
      £ 1,066 £ 299
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 12 | Singapore Airlines
      £ 343
      68% off
      £ 1,066 £ 343
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
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    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 17 | Singapore Airlines
      £ 220 £ 745
      70% off
      70% off
      £ 745 £ 220
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 19 | Singapore Airlines
      £ 221 £ 745
      70% off
      70% off
      £ 745 £ 221
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 20 | Singapore Airlines
      £ 221 £ 745
      70% off
      70% off
      £ 745 £ 221
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 13 | Singapore Airlines
      £ 241
      68% off
      £ 745 £ 241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 10 | Singapore Airlines
      £ 244
      67% off
      £ 745 £ 244
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Jan 15 | Singapore Airlines
      £ 245
      67% off
      £ 745 £ 245
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 16 | Singapore Airlines
      £ 246
      67% off
      £ 745 £ 246
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Dec 1 | Singapore Airlines
      £ 292
      15% off
      £ 343 £ 292
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Nov 27 | Singapore Airlines
      £ 299
      60% off
      £ 745 £ 299
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
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    • Cheapest nonstop
      SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Nov 4 | Singapore Airlines
      £ 348 £ 1,323
      74% off
      74% off
      £ 1,323 £ 348
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Nov 7 | Singapore Airlines
      £ 365 £ 1,323
      72% off
      72% off
      £ 1,323 £ 365
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Nov 3 | Singapore Airlines
      £ 411 £ 1,323
      69% off
      69% off
      £ 1,323 £ 411
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Nov 1 | Singapore Airlines
      £ 540
      59% off
      £ 1,323 £ 540
    • 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 | Wed, Nov 4 | United Airlines
      £ 275
      79% off
      £ 1,323 £ 275
    • SEA 07:00
      21h 15m
      1 stop
      SIN 20:15
      Seattle - Singapore | Mon, Nov 2 | United Airlines
      £ 283
      79% off
      £ 1,323 £ 283
    • SEA 15:40
      23h 15m
      1 stop
      SIN 06:55
      Seattle - Singapore | Thu, Nov 5 | United Airlines
      £ 284
      79% off
      £ 1,323 £ 284
    • SEA 15:40
      23h 15m
      1 stop
      SIN 06:55
      Seattle - Singapore | Tue, Nov 3 | United Airlines
      £ 284
      79% off
      £ 1,323 £ 284
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
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    • Cheapest nonstop
      SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 17 | Singapore Airlines
      £ 220 £ 745
      70% off
      70% off
      £ 745 £ 220
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Jan 19 | Singapore Airlines
      £ 221 £ 745
      70% off
      70% off
      £ 745 £ 221
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 20 | Singapore Airlines
      £ 221 £ 745
      70% off
      70% off
      £ 745 £ 221
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Wed, Jan 13 | Singapore Airlines
      £ 241
      68% off
      £ 745 £ 241
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sun, Jan 10 | Singapore Airlines
      £ 244
      67% off
      £ 745 £ 244
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Jan 15 | Singapore Airlines
      £ 245
      67% off
      £ 745 £ 245
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Sat, Jan 16 | Singapore Airlines
      £ 246
      67% off
      £ 745 £ 246
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Tue, Dec 1 | Singapore Airlines
      £ 292
      15% off
      £ 343 £ 292
    • SEA 08:40
      17h 5m
      Direct
      SIN 17:45
      Seattle - Singapore | Fri, Nov 27 | Singapore Airlines
      £ 299
      60% off
      £ 745 £ 299
    • SEA 13:00
      17h 25m
      1 stop
      SIN 14:00
      Seattle - Singapore | Mon, Nov 2 | Normal Airline
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

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

Which month has the cheapest one-way flights from Seattle-Tacoma International Airport to Singapore Changi Airport?

The data is based on Trip.com data from the past 12 months and shows the average one-way fares by month from Seattle-Tacoma International Airport to Singapore Changi Airport.

Based on Trip.com 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. December sees the highest fares, around £ 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

Which day of the week has the cheapest flights from Seattle-Tacoma International Airport to Singapore Changi Airport?

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

Based on Trip.com data from the past 12 months, the cheapest day for flights from Seattle-Tacoma International Airport to Singapore Changi Airport is Tuesday, with average prices lower than other days. Try to avoid departing on Wednesday, as fares are typically the highest.

£ 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 £ 240) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Singapore Airlines
From £ 240
United Airlines
From £ 272
Korean Air
From £ 275
Delta Air Lines
From £ 285
All Nippon Airways
From £ 293
Air Canada
From £ 297
Asiana Airlines
From £ 299
Philippine Airlines
From £ 300
American Airlines
From £ 310
Cathay Pacific
From £ 336

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

    12:50

    SEA

    11h 50m

    Direct

    16:40

    ICN

    S M T W T F S
    Search

  3. KE645

    Incheon International Airport

    18:40

    ICN

    6h 15m

    Direct

    23:55

    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

    12:50

    SEA

    11h 50m

    Direct

    16:40

    ICN

    S M T W T F S
    Search

  7. KE647

    Incheon International Airport

    23:35

    ICN

    6h 25m

    Direct

    05:00

    SIN

    S M T W T F S

  8. KE048

    Seattle-Tacoma International Airport

    00:55

    SEA

    12h 20m

    Direct

    05:15

    ICN

    S M T - T F -
    Search

  9. KE643

    Incheon International Airport

    14:20

    ICN

    6h 10m

    Direct

    19:30

    SIN

    S M T W T F S

  10. UA5402

    Seattle-Tacoma International Airport

    20:35

    SEA

    2h 25m

    Direct

    23:00

    SFO

    - M - W T F S
    Search

  11. UA029

    San Francisco International Airport

    10:50

    SFO

    15h 45m

    Direct

    18:35

    SIN

    S M T W T F S

  12. KE048

    Seattle-Tacoma International Airport

    00:55

    SEA

    12h 20m

    Direct

    05:15

    ICN

    S M T - T F -
    Search

  13. KE645

    Incheon International Airport

    18:40

    ICN

    6h 15m

    Direct

    23:55

    SIN

    S M T W T F S

  14. KE048

    Seattle-Tacoma International Airport

    00:55

    SEA

    12h 20m

    Direct

    05:15

    ICN

    S M T - T F -
    Search

  15. KE647

    Incheon International Airport

    23:35

    ICN

    6h 25m

    Direct

    05:00

    SIN

    S M T W T F S

  16. DL197

    Seattle-Tacoma International Airport

    13:05

    SEA

    10h 45m

    Direct

    16:50

    ICN

    S M T W T F S
    Search

  17. DL7819

    Incheon International Airport

    14:20

    ICN

    6h 10m

    Direct

    19:30

    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 £ 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 £ 1,176 in December, the most expensive month to book this route.
  • The earliest flight departs from Seattle-Tacoma International Airport (SEA) at 08:45 and arrives in Singapore Changi Airport (SIN) at 17:45.
    • 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 £ 265, and round-trip fares start from £ 518. The current lowest fare is a Korean Air flight departing on Thu, Nov 26; 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.

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Note: Prices shown on this page are the lowest estimated 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 shown before payment. Charges for checked baggage, meals, Wi-Fi, and other optional services may also appear in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and with many routes refreshed in real time. The more popular the route, the more accurate 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.