$524+ Cheap flights from Portland (PDX) 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Jun 20 — Jun 271
Round-trip
1 adult, Economy
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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
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Cheapest flights from Portland to SingaporeExplore the most affordable flight options available from Portland to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 21, 2026.
Explore the most affordable flight options available from Portland to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 21, 2026.
This oojo deal was found by Cheapflights users on 5/16. 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 10/197:15 am
PDX
- SIN
1 stop20h 55m
Singapore Airlines
Tue 11/179:00 am
SIN
- PDX
1 stop20h 14m
Singapore Airlines
Deal found 5/16![Singapore Airlines logo]()
$944
This oojo deal was found by Cheapflights users on 5/18. 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.
Fri 9/186:20 am
PDX
- SIN
1 stop20h 15m
Singapore Airlines
Sat 10/39:00 am
SIN
- PDX
1 stop19h 27m
Singapore Airlines
Deal found 5/18![Singapore Airlines logo]()
$951
This Justfly.com deal was found by Cheapflights users on 5/20. 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.
Thu 10/810:10 am
PDX
- SIN
1 stop28h 05m
Air Canada
Tue 12/158:50 am
SIN
- PDX
1 stop16h 36m
Air Canada
Deal found 5/20![Air Canada logo]()
$952
This Air Canada deal was found by Cheapflights users on 5/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:45 pm
PDX
- SIN
1 stop18h 30m
Air Canada
Tue 12/158:50 am
SIN
- PDX
1 stop16h 36m
Air Canada
Deal found 5/20![Air Canada logo]()
$972
This oojo deal was found by Cheapflights users on 5/18. 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.
Thu 10/86:00 pm
PDX
- SIN
1 stop22h 40m
Singapore Airlines
Thu 10/229:00 am
SIN
- PDX
1 stop19h 27m
Singapore Airlines
Deal found 5/18![Singapore Airlines logo]()
$976
This FlightHub deal was found by Cheapflights users on 5/21. 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.
Tue 12/17:00 am
PDX
- SIN
1 stop32h 00m
Air Canada
Fri 12/188:50 am
SIN
- PDX
1 stop16h 36m
Air Canada
Deal found 5/21![Air Canada logo]()
$983
This Justfly.com deal was found by Cheapflights users on 5/20. 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.
Thu 10/110:10 am
PDX
- SIN
1 stop28h 05m
Air Canada
Sat 10/107:00 am
SIN
- PDX
1 stop17h 31m
Air Canada
Deal found 5/20![Air Canada logo]()
$984
This oojo deal was found by Cheapflights users on 5/20. 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 9/256:20 am
PDX
- SIN
1 stop20h 15m
Singapore Airlines
Wed 10/79:05 am
SIN
- PDX
1 stop22h 40m
Singapore Airlines
Deal found 5/20![Singapore Airlines logo]()
$989
This oojo deal was found by Cheapflights users on 5/20. 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.
Thu 9/35:07 am
PDX
- SIN
1 stop21h 28m
Singapore Airlines
Thu 9/109:00 am
SIN
- PDX
1 stop19h 39m
Singapore Airlines
Deal found 5/20![Singapore Airlines logo]()
$992
This Air Canada deal was found by Cheapflights users on 5/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:30 pm
PDX
- SIN
1 stop22h 45m
Air Canada
Sat 12/128:50 am
SIN
- PDX
1 stop16h 36m
Air Canada
Deal found 5/20![Air Canada logo]()
$1,006
This FlightHub deal was found by Cheapflights users on 5/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/311:48 am
PDX
- SIN
2 stops36h 57m
Qatar Airways
Thu 9/107:40 pm
SIN
- PDX
2 stops36h 10m
Qatar Airways
Deal found 5/20![Qatar Airways logo]()
$1,007
This Justfly.com deal was found by Cheapflights users on 5/20. 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.
Fri 10/97:45 pm
PDX
- SIN
1 stop18h 30m
Air Canada
Sun 12/138:50 am
SIN
- PDX
1 stop16h 36m
Air Canada
Deal found 5/20![Air Canada logo]()
$1,015
Best flights from Portland to SingaporeDiscover carefully curated flight deals from Portland to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 21, 2026.
Discover carefully curated flight deals from Portland to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 21, 2026.
This FlightHub deal was found by Cheapflights users on 5/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/311:48 am
PDX
- SIN
2 stops36h 57m
Qatar Airways
Thu 9/107:40 pm
SIN
- PDX
2 stops36h 10m
Qatar Airways
Deal found 5/20![Qatar Airways logo]()
$1,007
This Singapore Airlines deal was found by Cheapflights users on 5/19. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:32 pm
PDX
- SIN
1 stop29h 33m
Multiple Airlines
Fri 11/69:00 am
SIN
- PDX
1 stop23h 50m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,078
This United Airlines deal was found by Cheapflights users on 5/16. 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.
Mon 10/195:30 am
PDX
- SIN
1 stop22h 05m
United Airlines
Tue 11/1710:10 am
SIN
- PDX
2 stops39h 30m
United Airlines
Deal found 5/16![United Airlines logo]()
$1,151
This Korean Air deal was found by Cheapflights users on 5/19. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:10 am
PDX
- SIN
2 stops29h 50m
Korean Air
Thu 11/510:40 am
SIN
- PDX
2 stops42h 38m
Korean Air
Deal found 5/19![Korean Air logo]()
$1,165
This Qatar Airways deal was found by Cheapflights users on 5/16. 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 10/2112:18 pm
PDX
- SIN
2 stops29h 32m
Qatar Airways
Tue 11/173:15 am
SIN
- PDX
2 stops28h 10m
Qatar Airways
Deal found 5/16![Qatar Airways logo]()
$1,086
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Thu 9/37:00 am
PDX
- SIN
1 stop20h 35m
United Airlines
Thu 9/106:15 am
SIN
- PDX
2 stops29h 44m
United Airlines
Deal found 5/20![United Airlines logo]()
$1,158
This Qatar Airways deal was found by Cheapflights users on 5/16. 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.
Sat 10/1712:18 pm
PDX
- SIN
2 stops29h 32m
Qatar Airways
Tue 11/173:15 am
SIN
- PDX
2 stops28h 10m
Qatar Airways
Deal found 5/16![Qatar Airways logo]()
$1,126
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Mon 8/1711:15 am
PDX
- SIN
1 stop40h 20m
United Airlines
Tue 9/111:05 am
SIN
- PDX
2 stops42h 42m
United Airlines
Deal found 5/20![United Airlines logo]()
$1,162
This United Airlines deal was found by Cheapflights users on 5/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:43 pm
PDX
- SIN
2 stops47h 57m
United Airlines
Sat 8/2911:05 am
SIN
- PDX
2 stops26h 40m
United Airlines
Deal found 5/17![United Airlines logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 5/19. 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.
Sun 11/16:59 pm
PDX
- SIN
2 stops33h 16m
United Airlines
Thu 11/510:10 am
SIN
- PDX
1 stop24h 21m
United Airlines
Deal found 5/19![United Airlines logo]()
$1,210
Last-minute flights from Portland to SingaporeDiscover last-minute flight deals from Portland to Singapore. Data last updated May 21, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Singapore. Data last updated May 21, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 5/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:10 am
PDX
- SIN
2 stops34h 35m
Multiple Airlines
Sat 6/66:00 pm
SIN
- PDX
3 stops34h 50m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$1,456
This Expedia deal was found by Cheapflights users on 5/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:45 pm
PDX
- SIN
1 stop18h 30m
Air Canada
Sat 6/67:00 am
SIN
- PDX
1 stop17h 30m
Air Canada
Deal found 5/20![Air Canada logo]()
$1,461
This Mytrip deal was found by Cheapflights users on 5/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/32:30 pm
PDX
- SIN
3 stops31h 45m
Multiple Airlines
Sun 6/147:00 am
SIN
- PDX
1 stop17h 30m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$1,221
This Ovago deal was found by Cheapflights users on 5/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/216:19 am
PDX
- SIN
2 stops47h 56m
Qatar Airways
Sat 6/277:40 pm
SIN
- PDX
2 stops42h 50m
Qatar Airways
Deal found 5/18![Qatar Airways logo]()
$1,171
This Air Canada deal was found by Cheapflights users on 5/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/213:30 pm
PDX
- SIN
1 stop22h 45m
Air Canada
Sat 6/277:00 am
SIN
- PDX
1 stop17h 31m
Air Canada
Deal found 5/18![Air Canada logo]()
$1,487
This Qatar Airways deal was found by Cheapflights users on 5/18. 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.
Mon 6/297:19 am
PDX
- SIN
2 stops46h 56m
Qatar Airways
Thu 7/97:40 pm
SIN
- PDX
2 stops40h 08m
Qatar Airways
Deal found 5/18![Qatar Airways logo]()
$1,471
This Justfly.com deal was found by Cheapflights users on 5/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3010:42 am
PDX
- SIN
2 stops43h 33m
Qatar Airways
Thu 7/97:40 pm
SIN
- PDX
2 stops40h 08m
Qatar Airways
Deal found 5/18![Qatar Airways logo]()
$1,417
This Qatar Airways deal was found by Cheapflights users on 5/18. 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.
Tue 6/307:19 am
PDX
- SIN
2 stops46h 56m
Qatar Airways
Tue 7/73:15 am
SIN
- PDX
2 stops45h 06m
Qatar Airways
Deal found 5/18![Qatar Airways logo]()
$1,478
One-way flights from Portland to SingaporeSearch for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated May 21, 2026.
Search for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated May 21, 2026.
This FlightHub deal was found by Cheapflights users on 5/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:00 am
PDX
- SIN
2 stops49h 15m
Qatar Airways
Deal found 5/20![Qatar Airways logo]()
$524
This Cheapflightsfares deal was found by Cheapflights users on 5/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/119:28 am
PDX
- SIN
2 stops32h 22m
Qatar Airways
Deal found 5/18![Qatar Airways logo]()
$539
This oojo deal was found by Cheapflights users on 5/18. 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 10/116:06 am
PDX
- SIN
1 stop20h 29m
Singapore Airlines
Deal found 5/18![Singapore Airlines logo]()
$554
This Qatar Airways deal was found by Cheapflights users on 5/16. 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.
Mon 7/65:00 am
PDX
- SIN
2 stops49h 15m
Qatar Airways
Deal found 5/16![Qatar Airways logo]()
$602
This deal was found by Cheapflights users on 5/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:45 pm
PDX
- SIN
1 stop18h 30m
Air Canada
Deal found 5/20![Air Canada logo]()
$609
This Kiwi.com deal was found by Cheapflights users on 5/18. 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.
Sun 10/1112:34 pm
PDX
- SIN
3 stops53h 31m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$628
This Kiwi.com deal was found by Cheapflights users on 5/16. 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.
Sat 7/42:30 pm
PDX
- SIN
3 stops49h 10m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$641
This Kiwi.com deal was found by Cheapflights users on 5/16. 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 7/32:30 pm
PDX
- SIN
3 stops52h 20m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$652
This Air Canada deal was found by Cheapflights users on 5/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:45 pm
PDX
- SIN
1 stop18h 30m
Air Canada
Deal found 5/20![Air Canada logo]()
$654
This Qatar Airways deal was found by Cheapflights users on 5/16. 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.
Sun 7/55:00 am
PDX
- SIN
2 stops49h 15m
Qatar Airways
Deal found 5/16![Qatar Airways logo]()
$705
This Kiwi.com deal was found by Cheapflights users on 5/16. 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 7/52:30 pm
PDX
- SIN
3 stops39h 20m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$718
Find flight deals from Portland to Singapore
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 May 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $944 (oojo) |
One-way from | $449 (oojo) |
Popular in | December |
Cheapest in | January |
Average price | $913 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland 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 May 21, 2026.
Use the filters below to find and compare flights from Portland to Singapore that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 9/3
11:48 am-3:45 pm
2 stops36h 57m
Singapore Changi
Thu 9/10
7:40 pm-4:50 pm
2 stops36h 10m
$1,007
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Tue 11/3
9:32 pm-7:05 pm
1 stop29h 33m
Singapore Changi
Fri 11/6
9:00 am-4:50 pm
1 stop23h 50m
$1,078
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 10/21
12:18 pm-8:50 am
2 stops29h 32m
Singapore Changi
Tue 11/17
3:15 am-3:25 pm
2 stops28h 10m
$1,086
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Sat 10/17
12:18 pm-8:50 am
2 stops29h 32m
Singapore Changi
Tue 11/17
3:15 am-3:25 pm
2 stops28h 10m
$1,126
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Mon 10/19
5:30 am-6:35 pm
1 stop22h 05m
Singapore Changi
Tue 11/17
10:10 am-9:40 am
2 stops39h 30m
$1,151
Quickest round-trip
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 9/3
7:00 am-6:35 pm
1 stop20h 35m
Singapore Changi
Thu 9/10
6:15 am-8:59 pm
2 stops29h 44m
$1,158
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Mon 8/17
11:15 am-6:35 pm
1 stop40h 20m
Singapore Changi
Tue 9/1
11:05 am-2:47 pm
2 stops42h 42m
$1,162
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Sun 11/1
7:10 am-5:00 am
2 stops29h 50m
Singapore Changi
Thu 11/5
10:40 am-1:18 pm
2 stops42h 38m
$1,165
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Sat 8/15
3:43 pm-6:40 am
2 stops47h 57m
Singapore Changi
Sat 8/29
11:05 am-10:45 pm
2 stops26h 40m
$1,165
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Sun 11/1
6:59 pm-8:15 pm
2 stops33h 16m
Singapore Changi
Thu 11/5
10:10 am-6:31 pm
1 stop24h 21m
$1,210
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from Portland 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 Portland to Singapore in May.
| 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 |
- Most accurate provider: When it comes to deals on Portland-Singapore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Singapore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Singapore flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-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 Portland-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 Portland to Singapore
Have a flexible travel schedule? Discover the best time to fly to Singapore from Portland with our price prediction graph.
PDX-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 Portland to Singapore
How far ahead should I book a flight from Portland to Singapore?
The price you pay for your flight from Portland to Singapore may vary depending on when you book. For the best chance of a lower fare, look to book 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Portland to Singapore?
Currently, January is the cheapest month in which you can book a flight from Portland to Singapore (average of $857). Flying from Portland to Singapore in December is currently the most expensive (average of $1,693). 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.
How much does it cost to fly round-trip from Portland to Singapore?
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 May 21, 2026.
Get a feel of what it's like to fly with Singapore Airlines,United Airlines, andAir Canada from Portland to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.3
Crew
8.6
Food
7.8
Overall
8.2
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SYD - SIN
Comfort
8.0
Boarding
8.3
Crew
8.6
Food
7.8
Overall
8.2
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SYD - SIN
Comfort
8.0
Boarding
8.3
Crew
8.6
Food
7.8
Overall
8.2
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SYD - SIN
Comfort
8.0
Boarding
8.3
Crew
8.6
Food
7.8
Overall
8.2
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SYD - SIN
Related info for your journey
Find useful and relevant information for your journey from Portland 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 Portland to Singapore by cabin class
Find flights from Portland to Singapore, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Singapore flights
Browse other Portland and Singapore flight options. Last updated on May 21, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on May 21, 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 May 21, 2026.
Top 3 airlines flying from Portland to Singapore
Discover the top 3 airlines that operate flights from Portland 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 May 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$694 | Average$931 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$837 | Average$1,000 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,024 | Average$1,312 | FlexibilityNo cancel fee | On-time69% |