$310+ Cheap flights from Seattle (SEA) to Singapore (SIN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SIN
May 23 — May 301
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Singapore with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Singapore Changi are usually found in September or March, booked 63 days in advance, depart on a Tuesday or Sunday and return on a Monday
Cheap flight deals from Seattle to Singapore
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to SingaporeExplore the most affordable flight options available from Seattle to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.
Explore the most affordable flight options available from Seattle to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.
This oojo deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/279:45 am
SEA
- SIN
Nonstop17h 00m
Singapore Airlines
Fri 11/69:00 am
SIN
- SEA
Nonstop14h 10m
Singapore Airlines
Deal found 4/21![Singapore Airlines logo]()
$668
This Super.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:45 am
SEA
- SIN
Nonstop17h 00m
Singapore Airlines
Thu 11/129:00 am
SIN
- SEA
Nonstop14h 10m
Singapore Airlines
Deal found 4/18![Singapore Airlines logo]()
$675
This oojo deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:45 am
SEA
- SIN
Nonstop17h 00m
Singapore Airlines
Fri 11/69:00 am
SIN
- SEA
Nonstop14h 10m
Singapore Airlines
Deal found 4/20![Singapore Airlines logo]()
$712
This oojo deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Tue 9/89:00 am
SIN
- SEA
Nonstop14h 45m
Singapore Airlines
Deal found 4/21![Singapore Airlines logo]()
$737
This oojo deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Tue 10/139:00 am
SIN
- SEA
Nonstop14h 45m
Singapore Airlines
Deal found 4/21![Singapore Airlines logo]()
$764
This oojo deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Sun 9/209:00 am
SIN
- SEA
Nonstop14h 45m
Singapore Airlines
Deal found 4/20![Singapore Airlines logo]()
$781
This oojo deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:00 am
SEA
- SIN
2 stops25h 00m
Singapore Airlines
Tue 11/109:00 am
SIN
- SEA
Nonstop14h 10m
Singapore Airlines
Deal found 4/18![Singapore Airlines logo]()
$785
This oojo deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Fri 10/99:00 am
SIN
- SEA
Nonstop14h 45m
Singapore Airlines
Deal found 4/21![Singapore Airlines logo]()
$790
This oojo deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Wed 8/269:15 am
SIN
- SEA
1 stop21h 56m
Singapore Airlines
Deal found 4/21![Singapore Airlines logo]()
$800
This oojo deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Sun 10/49:00 am
SIN
- SEA
Nonstop14h 45m
Singapore Airlines
Deal found 4/22![Singapore Airlines logo]()
$808
Best flights from Seattle to SingaporeDiscover carefully curated flight deals from Seattle to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 23, 2026.
Discover carefully curated flight deals from Seattle to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 23, 2026.
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/51:00 pm
SEA
- SIN
1 stop19h 55m
Delta
Sun 5/1010:00 pm
SIN
- SEA
1 stop30h 11m
Delta
Deal found 4/21![Delta logo]()
$971
This United Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:06 am
SEA
- SIN
1 stop20h 29m
United Airlines
Wed 9/308:35 pm
SIN
- SEA
2 stops29h 58m
United Airlines
Deal found 4/19![United Airlines logo]()
$976
This Korean Air deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
SEA
- SIN
2 stops25h 55m
Korean Air
Fri 5/87:30 am
SIN
- SEA
2 stops29h 31m
Korean Air
Deal found 4/21![Korean Air logo]()
$991
This Qatar Airways deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/74:25 pm
SEA
- SIN
1 stop32h 20m
Qatar Airways
Sun 10/183:15 am
SIN
- SEA
2 stops31h 42m
Qatar Airways
Deal found 4/18![Qatar Airways logo]()
$1,075
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:08 am
SEA
- SIN
1 stop20h 27m
United Airlines
Tue 5/129:00 am
SIN
- SEA
2 stops39h 40m
United Airlines
Deal found 4/20![United Airlines logo]()
$976
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:11 am
SEA
- SIN
1 stop20h 24m
United Airlines
Fri 10/96:15 am
SIN
- SEA
3 stops30h 00m
United Airlines
Deal found 4/21![United Airlines logo]()
$984
This Qatar Airways deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:44 am
SEA
- SIN
2 stops31h 06m
Qatar Airways
Sat 10/33:15 am
SIN
- SEA
1 stop24h 10m
Qatar Airways
Deal found 4/19![Qatar Airways logo]()
$1,084
This Korean Air deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:20 am
SEA
- SIN
2 stops30h 40m
Korean Air
Thu 12/2410:30 pm
SIN
- SEA
1 stop26h 30m
Korean Air
Deal found 4/18![Korean Air logo]()
$1,114
This Delta deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:20 am
SEA
- SIN
2 stops25h 35m
Delta
Sun 9/137:30 am
SIN
- SEA
2 stops29h 21m
Delta
Deal found 4/18![Delta logo]()
$1,125
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:29 am
SEA
- SIN
2 stops32h 46m
United Airlines
Tue 8/256:15 am
SIN
- SEA
2 stops25h 00m
United Airlines
Deal found 4/21![United Airlines logo]()
$988
This Korean Air deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:50 pm
SEA
- SIN
1 stop25h 10m
Korean Air
Sat 9/261:25 am
SIN
- SEA
2 stops28h 59m
Korean Air
Deal found 4/22![Korean Air logo]()
$1,125
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:00 am
SEA
- SIN
1 stop22h 35m
United Airlines
Fri 8/2811:05 am
SIN
- SEA
1 stop18h 20m
United Airlines
Deal found 4/18![United Airlines logo]()
$1,132
Last-minute flights from Seattle to SingaporeDiscover last-minute flight deals from Seattle to Singapore. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Singapore. Data last updated April 23, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:08 am
SEA
- SIN
1 stop20h 27m
United Airlines
Mon 5/46:15 am
SIN
- SEA
1 stop23h 10m
United Airlines
Deal found 4/21![United Airlines logo]()
$980
This CrystalTravel deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:53 pm
SEA
- SIN
2 stops44h 02m
Korean Air
Tue 5/121:25 am
SIN
- SEA
1 stop24h 15m
Korean Air
Deal found 4/19![Korean Air logo]()
$914
This United Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:00 am
SEA
- SIN
1 stop22h 35m
United Airlines
Wed 5/139:00 am
SIN
- SEA
1 stop29h 29m
United Airlines
Deal found 4/19![United Airlines logo]()
$972
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/31:00 pm
SEA
- SIN
1 stop25h 00m
Delta
Sun 5/1010:00 pm
SIN
- SEA
1 stop30h 11m
Delta
Deal found 4/21![Delta logo]()
$971
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:00 am
SEA
- SIN
2 stops25h 55m
Korean Air
Tue 5/127:30 am
SIN
- SEA
1 stop18h 10m
Korean Air
Deal found 4/18![Korean Air logo]()
$953
This Kiwi.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:30 pm
SEA
- SIN
1 stop23h 10m
ANA
Tue 5/1210:00 pm
SIN
- SEA
1 stop31h 25m
ANA
Deal found 4/20![ANA logo]()
$965
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:08 am
SEA
- SIN
1 stop20h 27m
United Airlines
Tue 5/129:00 am
SIN
- SEA
2 stops39h 40m
United Airlines
Deal found 4/20![United Airlines logo]()
$976
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:30 pm
SEA
- SIN
1 stop23h 10m
ANA
Mon 7/611:05 am
SIN
- SEA
1 stop18h 20m
ANA
Deal found 4/21![ANA logo]()
$966
This Gotogate deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:30 pm
SEA
- SIN
1 stop23h 10m
ANA
Mon 5/1111:05 am
SIN
- SEA
1 stop18h 20m
ANA
Deal found 4/18![ANA logo]()
$979
This Gotogate deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/104:30 pm
SEA
- SIN
1 stop23h 10m
ANA
Wed 5/1310:00 pm
SIN
- SEA
1 stop31h 25m
ANA
Deal found 4/18![ANA logo]()
$978
One-way flights from Seattle to SingaporeSearch for one-way flight options from Seattle to Singapore. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
Search for one-way flight options from Seattle to Singapore. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:10 pm
SEA
- SIN
2 stops39h 50m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$310
This oojo deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Deal found 4/20![Singapore Airlines logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Deal found 4/22![Singapore Airlines logo]()
$409
This CrystalTravel deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 4/19![Asiana Airlines logo]()
$418
This CrystalTravel deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 4/22![Asiana Airlines logo]()
$420
This Kiwi.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:35 am
SEA
- SIN
3 stops37h 40m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$422
This Justfly.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 4/20![Asiana Airlines logo]()
$423
This FlightHub deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 4/21![Asiana Airlines logo]()
$424
This FlightHub deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 4/19![Asiana Airlines logo]()
$426
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 4/22![Asiana Airlines logo]()
$428
Find flight deals from Seattle to Singapore
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $668 (oojo) |
One-way from | $310 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $845 |
Good round-trip deal | $812 or less |
Good one-way deal | $318 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
Use the filters below to find and compare flights from Seattle to Singapore that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Tue 5/5
1:00 pm-11:55 pm
1 stop19h 55m
Singapore Changi
Sun 5/10
10:00 pm-1:11 pm
1 stop30h 11m
$971
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Tue 9/1
7:06 am-6:35 pm
1 stop20h 29m
Singapore Changi
Wed 9/30
8:35 pm-11:33 am
2 stops29h 58m
$976
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Tue 5/5
7:08 am-6:35 pm
1 stop20h 27m
Singapore Changi
Tue 5/12
9:00 am-9:40 am
2 stops39h 40m
$976
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Thu 10/1
7:11 am-6:35 pm
1 stop20h 24m
Singapore Changi
Fri 10/9
6:15 am-9:15 pm
3 stops30h 00m
$984
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Tue 8/11
6:29 am-6:15 am
2 stops32h 46m
Singapore Changi
Tue 8/25
6:15 am-4:15 pm
2 stops25h 00m
$988
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Tue 5/5
7:00 am-11:55 pm
2 stops25h 55m
Singapore Changi
Fri 5/8
7:30 am-10:01 pm
2 stops29h 31m
$991
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Wed 10/7
4:25 pm-3:45 pm
1 stop32h 20m
Singapore Changi
Sun 10/18
3:15 am-7:57 pm
2 stops31h 42m
$1,075
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Tue 9/22
10:44 am-8:50 am
2 stops31h 06m
Singapore Changi
Sat 10/3
3:15 am-12:25 pm
1 stop24h 10m
$1,084
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Fri 9/11
7:20 am-5:00 am
2 stops30h 40m
Singapore Changi
Thu 12/24
10:30 pm-9:00 am
1 stop26h 30m
$1,114
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Tue 9/1
7:20 am-11:55 pm
2 stops25h 35m
Singapore Changi
Sun 9/13
7:30 am-9:51 pm
2 stops29h 21m
$1,125
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Seattle to Singapore
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Singapore in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Singapore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Singapore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Singapore flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Singapore flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Singapore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Singapore
Have a flexible travel schedule? Discover the best time to fly to Singapore from Seattle with our price prediction graph.
SEA-SIN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Singapore
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How far ahead should I book a flight from Seattle to Singapore?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Singapore. Price data was last updated on April 17, 2026.
Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Singapore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to Singapore?
Currently, September is the cheapest month in which you can book a flight from Seattle to Singapore (average of $656). Flying from Seattle to Singapore in December is currently the most expensive (average of $1,370). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to SIN?
Find hourly flight availability from Seattle to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 23, 2026.
When flying from Seattle to Singapore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from Seattle to Singapore delayed?
About 26% of weekly flights between Seattle and Singapore have experienced delays in the past year, with the average delay time being 95 minutes.
What is the most punctual flight time for Seattle to Singapore flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Sunday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Seattle to Singapore flights?
Over the last year, Singapore Airlines have had the lowest number of delays on this route, with just 26% of flights being delayed.
What’s the top layover airport for flights from Seattle to Singapore?
Share of 1-stop round-trip flights from Seattle to Singapore chosen by Cheapflights users in the past 12 months, using the same layover each way.
San Francisco (SFO) – chosen by Cheapflights users on 50% of 1-stop itineraries from Seattle to Singapore on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to Singapore?
Average round-trip fare for 1-stop flights from Seattle to Singapore, chosen by Cheapflights users in the past 12 months, with the same layover each way.
San Francisco (SFO) is the most affordable 1-stop option, with an average round-trip price of $1,103.
What’s the fastest layover option from Seattle to Singapore?
Shortest average travel time for 1-stop one-way flights from Seattle to Singapore, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via San Francisco (SFO) have the shortest average one-way travel time for 1-stop routes: 20h 08m.
Which airport typically offers the quickest layover for flights from Seattle to Singapore?
Average layover duration for 1-stop one-way flights from Seattle to Singapore, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Taipei City (TPE) offer the fastest connection on this route, with an average layover time of 3h 50m.
The best insider tips for Seattle to Singapore flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Singapore trip
Our travel experts
Reviews of airlines servicing Singapore
Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated April 23, 2026.
Read through reviews of airlines operating flights from Seattle to Singapore, such as Korean Air,Singapore Airlines, andAsiana Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.3
Food
8.1
Boarding
8.5
Entertainment
8.2
Crew
8.7
Overall
8.4
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Comfort
8.3
Food
8.1
Boarding
8.5
Entertainment
8.2
Crew
8.7
Overall
8.4
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Comfort
8.3
Food
8.1
Boarding
8.5
Entertainment
8.2
Crew
8.7
Overall
8.4
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Comfort
8.3
Food
8.1
Boarding
8.5
Entertainment
8.2
Crew
8.7
Overall
8.4
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Comfort
8.3
Food
8.1
Boarding
8.5
Entertainment
8.2
Crew
8.7
Overall
8.4
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Comfort
8.3
Food
8.1
Boarding
8.5
Entertainment
8.2
Crew
8.7
Overall
8.4
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Related info for your journey
Find useful and relevant information for your journey from Seattle to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
Complete your trip to Singapore by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Singapore by cabin class
Find flights from Seattle to Singapore, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Singapore flights
Browse other Seattle and Singapore flight options. Last updated on April 23, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on April 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Singapore
Explore flights to Singapore departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 23, 2026.
Top 10 airlines flying from Seattle to Singapore
Discover the top 10 airlines that operate flights from Seattle to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$508 | Average$784 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$534 | Average$846 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$621 | Average$890 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$648 | Average$682 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$661 | Average$788 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$736 | Average$987 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$750 | Average$889 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$754 | Average$1,089 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$774 | Average$933 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$792 | Average$896 | FlexibilityNo cancel fee | On-time79% |