$363+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SIN
Jul 10 — Jul 171
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 November, 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 June 10, 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 June 10, 2026.
This oojo deal was found by Cheapflights users on 6/9. 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 10/1510:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Thu 10/229:00 am
SIN
- SEA
Nonstop14h 45m
Singapore Airlines
Deal found 6/9![Singapore Airlines logo]()
$655
This oojo deal was found by Cheapflights users on 6/5. 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
Sun 11/19:00 am
SIN
- SEA
Nonstop14h 10m
Singapore Airlines
Deal found 6/5![Singapore Airlines logo]()
$656
This oojo deal was found by Cheapflights users on 6/7. 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.
Sat 10/1010:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Sat 10/249:00 am
SIN
- SEA
Nonstop14h 45m
Singapore Airlines
Deal found 6/7![Singapore Airlines logo]()
$699
This oojo deal was found by Cheapflights users on 6/8. 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 9/2510:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Fri 10/309:00 am
SIN
- SEA
Nonstop14h 10m
Singapore Airlines
Deal found 6/8![Singapore Airlines logo]()
$701
This oojo deal was found by Cheapflights users on 6/6. 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 9/1710:15 am
SEA
- SIN
Nonstop16h 20m
Singapore Airlines
Wed 11/49:00 am
SIN
- SEA
Nonstop14h 10m
Singapore Airlines
Deal found 6/6![Singapore Airlines logo]()
$704
This oojo deal was found by Cheapflights users on 6/9. 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 11/108:45 am
SEA
- SIN
Nonstop17h 00m
Singapore Airlines
Tue 12/19:00 am
SIN
- SEA
Nonstop14h 10m
Singapore Airlines
Deal found 6/9![Singapore Airlines logo]()
$751
This oojo deal was found by Cheapflights users on 6/9. 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
Sat 9/199:00 am
SIN
- SEA
Nonstop14h 45m
Singapore Airlines
Deal found 6/9![Singapore Airlines logo]()
$766
This oojo deal was found by Cheapflights users on 6/8. 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 6/8![Singapore Airlines logo]()
$767
This oojo deal was found by Cheapflights users on 6/9. 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.
Mon 11/3012:10 am
SEA
- SIN
1 stop29h 45m
Asiana Airlines
Mon 12/2111:10 pm
SIN
- SEA
1 stop30h 45m
Asiana Airlines
Deal found 6/9![Asiana Airlines logo]()
$771
This oojo deal was found by Cheapflights users on 6/8. 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 11/812:10 am
SEA
- SIN
1 stop29h 45m
Asiana Airlines
Mon 11/1611:10 pm
SIN
- SEA
1 stop30h 45m
Asiana Airlines
Deal found 6/8![Asiana Airlines logo]()
$773
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 June 10, 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 June 10, 2026.
This Delta deal was found by Cheapflights users on 6/6. 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 9/81:00 pm
SEA
- SIN
1 stop39h 15m
Delta
Tue 9/157:30 am
SIN
- SEA
1 stop21h 07m
Delta
Deal found 6/6![Delta logo]()
$819
This Asiana Airlines deal was found by Cheapflights users on 6/9. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:10 am
SEA
- SIN
1 stop30h 45m
Asiana Airlines
Sun 11/111:10 pm
SIN
- SEA
1 stop30h 45m
Asiana Airlines
Deal found 6/9![Asiana Airlines logo]()
$823
This United Airlines deal was found by Cheapflights users on 6/8. 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 9/84:45 pm
SEA
- SIN
2 stops22h 30m
United Airlines
Tue 9/1511:05 am
SIN
- SEA
2 stops24h 38m
United Airlines
Deal found 6/8![United Airlines logo]()
$836
This Korean Air deal was found by Cheapflights users on 6/6. 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 9/114:15 pm
SEA
- SIN
2 stops36h 00m
Korean Air
Sun 9/2010:00 pm
SIN
- SEA
2 stops49h 39m
Korean Air
Deal found 6/6![Korean Air logo]()
$895
This oojo deal was found by Cheapflights users on 6/9. 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 10/153:20 pm
SEA
- SIN
1 stop25h 20m
Singapore Airlines
Thu 10/229:00 am
SIN
- SEA
Nonstop14h 45m
Singapore Airlines
Deal found 6/9![Singapore Airlines logo]()
$935
This Asiana Airlines deal was found by Cheapflights users on 6/9. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:10 am
SEA
- SIN
1 stop30h 45m
Asiana Airlines
Sun 11/111:10 pm
SIN
- SEA
1 stop30h 45m
Asiana Airlines
Deal found 6/9![Asiana Airlines logo]()
$873
This Delta deal was found by Cheapflights users on 6/9. 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.
Thu 8/201:05 pm
SEA
- SIN
1 stop24h 55m
Delta
Wed 8/2610:00 pm
SIN
- SEA
1 stop30h 37m
Delta
Deal found 6/9![Delta logo]()
$1,054
This Korean Air deal was found by Cheapflights users on 6/5. 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.
Mon 8/31:20 pm
SEA
- SIN
1 stop24h 40m
Korean Air
Tue 8/2510:00 pm
SIN
- SEA
1 stop28h 00m
Korean Air
Deal found 6/5![Korean Air logo]()
$1,056
This United Airlines deal was found by Cheapflights users on 6/7. 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 6/241:30 pm
SEA
- SIN
1 stop25h 45m
United Airlines
Thu 7/98:45 am
SIN
- SEA
1 stop20h 45m
United Airlines
Deal found 6/7![United Airlines logo]()
$1,071
This Delta deal was found by Cheapflights users on 6/5. 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.
Mon 8/31:05 pm
SEA
- SIN
1 stop24h 55m
Delta
Sat 8/297:30 am
SIN
- SEA
1 stop21h 07m
Delta
Deal found 6/5![Delta logo]()
$1,054
This Korean Air deal was found by Cheapflights users on 6/9. 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.
Thu 8/207:16 am
SEA
- SIN
2 stops44h 59m
Korean Air
Tue 8/251:25 am
SIN
- SEA
2 stops34h 05m
Korean Air
Deal found 6/9![Korean Air logo]()
$1,074
Last-minute flights from Seattle to SingaporeDiscover last-minute flight deals from Seattle to Singapore. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Singapore. Data last updated June 10, 2026 and is based on user searches.
This CheapTickets deal was found by Cheapflights users on 6/9. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1412:10 am
SEA
- SIN
1 stop30h 20m
Multiple Airlines
Tue 9/12:10 pm
SIN
- SEA
1 stop17h 00m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,044
This lastminute.com deal was found by Cheapflights users on 6/8. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/161:20 pm
SEA
- SIN
1 stop38h 55m
Korean Air
Thu 7/307:30 am
SIN
- SEA
1 stop18h 30m
Korean Air
Deal found 6/8![Korean Air logo]()
$1,007
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 7/211:20 pm
SEA
- SIN
1 stop38h 55m
Korean Air
Tue 7/287:30 am
SIN
- SEA
1 stop18h 30m
Korean Air
Deal found 6/6![Korean Air logo]()
$1,034
This CheapTickets deal was found by Cheapflights users on 6/8. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2312:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Mon 7/2710:50 pm
SIN
- SEA
1 stop31h 55m
Asiana Airlines
Deal found 6/8![Asiana Airlines logo]()
$939
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Sun 7/2612:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Mon 8/1010:50 pm
SIN
- SEA
1 stop31h 55m
Asiana Airlines
Deal found 6/8![Asiana Airlines logo]()
$822
This Trip.com deal was found by Cheapflights users on 6/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2612:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Mon 8/310:50 pm
SIN
- SEA
1 stop31h 55m
Asiana Airlines
Deal found 6/5![Asiana Airlines logo]()
$863
This Trip.com deal was found by Cheapflights users on 6/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2612:10 am
SEA
- SIN
1 stop30h 20m
Multiple Airlines
Mon 8/173:20 pm
SIN
- SEA
1 stop19h 30m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,042
This FlightHub deal was found by Cheapflights users on 6/8. 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.
Sun 7/2612:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Sat 8/810:50 pm
SIN
- SEA
1 stop31h 55m
Asiana Airlines
Deal found 6/8![Asiana Airlines logo]()
$1,043
This FlightHub deal was found by Cheapflights users on 6/8. 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 7/2712:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Sat 8/810:50 pm
SIN
- SEA
1 stop31h 55m
Asiana Airlines
Deal found 6/8![Asiana Airlines logo]()
$1,049
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 June 10, 2026.
Search for one-way flight options from Seattle to Singapore. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This oojo deal was found by Cheapflights users on 6/7. 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
Deal found 6/7![Singapore Airlines logo]()
$363
This SmartFares deal was found by Cheapflights users on 6/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 6/9![Asiana Airlines logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 8/2712:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 6/9![Asiana Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 9/112:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 6/9![Asiana Airlines logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/2712:10 am
SEA
- SIN
1 stop30h 20m
Asiana Airlines
Deal found 6/9![Asiana Airlines logo]()
$389
This FlightHub deal was found by Cheapflights users on 6/9. 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 6/9![Asiana Airlines logo]()
$391
This FlightHub deal was found by Cheapflights users on 6/9. 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.
Sun 10/2512:10 am
SEA
- SIN
1 stop30h 45m
Asiana Airlines
Deal found 6/9![Asiana Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 6/8. 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 9/13:30 pm
SEA
- SIN
1 stop23h 45m
United Airlines
Deal found 6/8![United Airlines logo]()
$405
This Delta deal was found by Cheapflights users on 6/8. 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.
Mon 9/71:00 pm
SEA
- SIN
1 stop19h 55m
Delta
Deal found 6/8![Delta logo]()
$407
This Asiana Airlines deal was found by Cheapflights users on 6/9. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:10 am
SEA
- SIN
1 stop30h 45m
Asiana Airlines
Deal found 6/9![Asiana Airlines logo]()
$409
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 June 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $655 (oojo) |
One-way from | $363 (oojo) |
Popular in | December |
Cheapest in | September |
Average price | $1,006 |
Good round-trip deal | $864 or less |
Good one-way deal | $475 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 June 10, 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 9/8
1:00 pm-7:15 pm
1 stop39h 15m
Singapore Changi
Tue 9/15
7:30 am-1:37 pm
1 stop21h 07m
$819
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Tue 10/27
12:10 am-9:55 pm
1 stop30h 45m
Singapore Changi
Sun 11/1
11:10 pm-1:55 pm
1 stop30h 45m
$823
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Tue 9/8
4:45 pm-6:15 am
2 stops22h 30m
Singapore Changi
Tue 9/15
11:05 am-8:43 pm
2 stops24h 38m
$836
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Thu 10/29
12:10 am-9:55 pm
1 stop30h 45m
Singapore Changi
Sun 11/1
11:10 pm-1:55 pm
1 stop30h 45m
$873
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Fri 9/11
4:15 pm-7:15 pm
2 stops36h 00m
Singapore Changi
Sun 9/20
10:00 pm-8:39 am
2 stops49h 39m
$895
Quickest round-trip
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Thu 10/15
3:20 pm-7:40 am
1 stop25h 20m
Singapore Changi
Thu 10/22
9:00 am-8:45 am
Nonstop14h 45m
$935
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Thu 8/20
1:05 pm-5:00 am
1 stop24h 55m
Singapore Changi
Wed 8/26
10:00 pm-1:37 pm
1 stop30h 37m
$1,054
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Mon 8/3
1:05 pm-5:00 am
1 stop24h 55m
Singapore Changi
Sat 8/29
7:30 am-1:37 pm
1 stop21h 07m
$1,054
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Mon 8/3
1:20 pm-5:00 am
1 stop24h 40m
Singapore Changi
Tue 8/25
10:00 pm-11:00 am
1 stop28h 00m
$1,056
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Wed 6/24
1:30 pm-6:15 am
1 stop25h 45m
Singapore Changi
Thu 7/9
8:45 am-2:30 pm
1 stop20h 45m
$1,071
Showing 1-10 of 20 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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | 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 | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | 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
Prices
Delays
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How far ahead should I book a flight from Seattle to Singapore?
Booking 62 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 $680). Flying from Seattle to Singapore in December is currently the most expensive (average of $1,410). 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 June 10, 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 27% of weekly flights between Seattle and Singapore have experienced delays in the past year, with the average delay time being 91 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 27% 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 June 10, 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.
Boarding
8.5
Overall
8.4
Crew
8.7
Comfort
8.3
Entertainment
8.2
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Comfort
8.3
Entertainment
8.2
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Comfort
8.3
Entertainment
8.2
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Comfort
8.3
Entertainment
8.2
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Comfort
8.3
Entertainment
8.2
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Comfort
8.3
Entertainment
8.2
Food
8.1
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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Alternative routes for Seattle to Singapore
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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 June 10, 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 June 10, 2026.
Popular flight searches
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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 June 10, 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 June 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$348 | Average$378 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$507 | Average$766 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$548 | Average$970 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$621 | Average$876 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$656 | Average$775 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$674 | Average$869 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$699 | Average$846 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$750 | Average$907 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$774 | Average$933 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$792 | Average$896 | FlexibilityNo cancel fee | On-time79% |