$424+ Cheap flights from Portland (PDX) to Singapore
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
Aug 30 — Sep 61
Round-trip
1 adult, Economy
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Find cheap flights from Portland 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
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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 July 31, 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 July 31, 2026.
This FlightHub deal was found by Cheapflights users on 7/31. 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.
Wed 11/46:47 am
PDX
- SIN
2 stops40h 13m
Multiple Airlines
Tue 11/1012:25 am
SIN
- PDX
2 stops38h 45m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$914
This FlightHub deal was found by Cheapflights users on 7/27. 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 11/33:15 pm
PDX
- SIN
1 stop23h 45m
Air Canada
Tue 11/178:40 am
SIN
- PDX
1 stop16h 46m
Air Canada
Deal found 7/27![Air Canada logo]()
$918
This Air Canada deal was found by Cheapflights users on 7/29. 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 11/33:15 pm
PDX
- SIN
1 stop23h 45m
Air Canada
Thu 11/268:40 am
SIN
- PDX
1 stop28h 06m
Air Canada
Deal found 7/29![Air Canada logo]()
$936
This Justfly.com deal was found by Cheapflights users on 7/27. 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 stop22h 51m
Air Canada
Deal found 7/27![Air Canada logo]()
$949
This Air Canada deal was found by Cheapflights users on 7/29. 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 11/37:10 pm
PDX
- SIN
1 stop19h 50m
Air Canada
Sun 11/228:40 am
SIN
- PDX
1 stop28h 06m
Air Canada
Deal found 7/29![Air Canada logo]()
$970
This Gotogate deal was found by Cheapflights users on 7/27. 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 8/2710:10 am
PDX
- SIN
1 stop28h 05m
Air Canada
Thu 9/108:50 pm
SIN
- PDX
2 stops27h 41m
Air Canada
Deal found 7/27![Air Canada logo]()
$980
This FlightHub deal was found by Cheapflights users on 7/27. 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 11/83:15 pm
PDX
- SIN
1 stop23h 45m
Air Canada
Sat 11/288:40 am
SIN
- PDX
1 stop16h 46m
Air Canada
Deal found 7/27![Air Canada logo]()
$981
This Air Canada deal was found by Cheapflights users on 7/27. 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.
Fri 9/43:30 pm
PDX
- SIN
1 stop22h 45m
Air Canada
Sat 9/127:00 am
SIN
- PDX
1 stop27h 11m
Air Canada
Deal found 7/27![Air Canada logo]()
$993
This Gotogate deal was found by Cheapflights users on 7/28. 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.
Fri 9/46:53 pm
PDX
- SIN
2 stops40h 32m
Multiple Airlines
Tue 9/156:25 pm
SIN
- PDX
2 stops37h 11m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$996
This Expedia deal was found by Cheapflights users on 7/29. 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.
Wed 9/165:34 pm
PDX
- SIN
2 stops34h 41m
Korean Air
Tue 9/291:25 am
SIN
- PDX
2 stops30h 45m
Korean Air
Deal found 7/29![Korean Air logo]()
$1,000
This Air Canada deal was found by Cheapflights users on 7/29. 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.
Fri 11/67:00 am
PDX
- SIN
1 stop32h 00m
Air Canada
Sun 11/228:40 am
SIN
- PDX
1 stop28h 06m
Air Canada
Deal found 7/29![Air Canada logo]()
$1,003
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 July 31, 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 July 31, 2026.
This Korean Air deal was found by Cheapflights users on 7/30. 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 11/35:15 pm
PDX
- SIN
2 stops43h 45m
Korean Air
Tue 11/1710:40 am
SIN
- PDX
2 stops26h 16m
Korean Air
Deal found 7/30![Korean Air logo]()
$1,010
This Delta deal was found by Cheapflights users on 7/29. 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 8/177:05 am
PDX
- SIN
2 stops25h 50m
Delta
Tue 9/110:00 pm
SIN
- PDX
2 stops36h 44m
Delta
Deal found 7/29![Delta logo]()
$1,082
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/277:00 am
PDX
- SIN
1 stop20h 35m
United Airlines
Thu 9/108:35 pm
SIN
- PDX
1 stop28h 36m
United Airlines
Deal found 7/27![United Airlines logo]()
$1,134
This Singapore Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 11/49:32 pm
PDX
- SIN
1 stop29h 33m
Multiple Airlines
Wed 11/119:15 am
SIN
- PDX
1 stop20h 15m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$1,141
This Korean Air deal was found by Cheapflights users on 7/30. 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 1/186:30 am
PDX
- SIN
2 stops25h 40m
Korean Air
Wed 2/171:35 am
SIN
- PDX
2 stops33h 53m
Korean Air
Deal found 7/30![Korean Air logo]()
$1,010
This Korean Air deal was found by Cheapflights users on 7/29. 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 11/37:05 am
PDX
- SIN
2 stops25h 05m
Korean Air
Wed 11/251:35 am
SIN
- PDX
2 stops28h 00m
Korean Air
Deal found 7/29![Korean Air logo]()
$1,010
This Korean Air deal was found by Cheapflights users on 7/29. 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 1/215:10 pm
PDX
- SIN
2 stops35h 15m
Korean Air
Wed 2/101:35 am
SIN
- PDX
2 stops30h 38m
Korean Air
Deal found 7/29![Korean Air logo]()
$1,010
This Korean Air deal was found by Cheapflights users on 7/30. 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 9/46:20 am
PDX
- SIN
2 stops31h 40m
Korean Air
Sun 9/201:25 am
SIN
- PDX
2 stops30h 44m
Korean Air
Deal found 7/30![Korean Air logo]()
$1,024
This Korean Air deal was found by Cheapflights users on 7/30. 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 12/37:00 am
PDX
- SIN
2 stops25h 10m
Korean Air
Sun 12/201:35 am
SIN
- PDX
2 stops31h 28m
Korean Air
Deal found 7/30![Korean Air logo]()
$1,088
This Korean Air deal was found by Cheapflights users on 7/31. 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 12/15:38 pm
PDX
- SIN
2 stops34h 47m
Korean Air
Fri 12/1810:30 pm
SIN
- PDX
2 stops34h 33m
Korean Air
Deal found 7/31![Korean Air logo]()
$1,088
Last-minute flights from Portland to SingaporeDiscover last-minute flight deals from Portland to Singapore. Data last updated July 31, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Singapore. Data last updated July 31, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/31. 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.
Sat 8/153:25 pm
PDX
- SIN
2 stops41h 30m
Delta
Mon 8/3110:00 pm
SIN
- PDX
2 stops36h 44m
Delta
Deal found 7/31![Delta logo]()
$1,101
This United Airlines deal was found by Cheapflights users on 7/31. 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 8/157:00 am
PDX
- SIN
1 stop32h 15m
United Airlines
Mon 8/318:45 am
SIN
- PDX
1 stop27h 14m
United Airlines
Deal found 7/31![United Airlines logo]()
$1,152
This Delta deal was found by Cheapflights users on 7/29. 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 8/177:05 am
PDX
- SIN
2 stops25h 50m
Delta
Tue 9/110:00 pm
SIN
- PDX
2 stops36h 44m
Delta
Deal found 7/29![Delta logo]()
$1,082
This Korean Air deal was found by Cheapflights users on 7/28. 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 8/1711:22 am
PDX
- SIN
2 stops26h 38m
Korean Air
Tue 9/17:30 am
SIN
- PDX
2 stops29h 42m
Korean Air
Deal found 7/28![Korean Air logo]()
$1,088
This Qatar Airways deal was found by Cheapflights users on 7/26. 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 8/179:19 am
PDX
- SIN
2 stops39h 26m
Qatar Airways
Mon 8/313:15 am
SIN
- PDX
2 stops30h 22m
Qatar Airways
Deal found 7/26![Qatar Airways logo]()
$1,124
This United Airlines deal was found by Cheapflights users on 7/28. 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 8/173:43 pm
PDX
- SIN
1 stop23h 32m
United Airlines
Tue 9/18:45 am
SIN
- PDX
1 stop24h 34m
United Airlines
Deal found 7/28![United Airlines logo]()
$1,146
This Gotogate deal was found by Cheapflights users on 7/27. 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 8/2710:10 am
PDX
- SIN
1 stop28h 05m
Air Canada
Thu 9/108:50 pm
SIN
- PDX
2 stops27h 41m
Air Canada
Deal found 7/27![Air Canada logo]()
$980
This Gotogate deal was found by Cheapflights users on 7/27. 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 8/2711:48 am
PDX
- SIN
2 stops36h 57m
Qatar Airways
Wed 9/93:15 am
SIN
- PDX
2 stops31h 35m
Qatar Airways
Deal found 7/27![Qatar Airways logo]()
$1,020
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/277:00 am
PDX
- SIN
1 stop20h 35m
United Airlines
Thu 9/108:35 pm
SIN
- PDX
1 stop28h 36m
United Airlines
Deal found 7/27![United Airlines logo]()
$1,134
This Gotogate deal was found by Cheapflights users on 7/30. 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.
Sat 8/299:15 am
PDX
- SIN
2 stops24h 05m
Japan Airlines
Fri 9/41:55 am
SIN
- PDX
2 stops29h 55m
Japan Airlines
Deal found 7/30![Japan Airlines logo]()
$1,132
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 July 31, 2026.
Search for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
This Air Canada deal was found by Cheapflights users on 7/27. 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 7/27![Air Canada logo]()
$424
This oojo deal was found by Cheapflights users on 7/30. 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 8/65:30 pm
PDX
- SIN
2 stops24h 35m
Philippine Airlines
Deal found 7/30![Philippine Airlines logo]()
$463
This Justfly.com deal was found by Cheapflights users on 7/27. 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 10/2310:10 am
PDX
- SIN
1 stop28h 05m
Air Canada
Deal found 7/27![Air Canada logo]()
$478
This Air Canada deal was found by Cheapflights users on 7/30. 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 9/67:45 pm
PDX
- SIN
1 stop18h 30m
Air Canada
Deal found 7/30![Air Canada logo]()
$480
This Expedia deal was found by Cheapflights users on 7/31. 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.
Thu 8/65:30 pm
PDX
- SIN
2 stops24h 35m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$489
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 9/65:56 pm
PDX
- SIN
2 stops26h 49m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$498
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/315:56 pm
PDX
- SIN
2 stops26h 49m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/206:53 pm
PDX
- SIN
2 stops35h 37m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$502
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Wed 8/197:03 am
PDX
- SIN
2 stops26h 42m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$509
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Wed 1/205:55 pm
PDX
- SIN
2 stops31h 40m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$511
Find flight deals from Portland to Singapore
Keep the following information in mind while searching for Portland to Singapore flight deals. Data was last updated July 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $914 (FlightHub) |
One-way from | $424 (Air Canada) |
Popular in | December |
Cheapest in | January |
Average price | $1,098 |
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 July 31, 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
Tue 11/3
5:15 pm-5:00 am
2 stops43h 45m
Singapore Changi
Tue 11/17
10:40 am-8:56 pm
2 stops26h 16m
$1,010
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Mon 1/18
6:30 am-12:10 am
2 stops25h 40m
Singapore Changi
Wed 2/17
1:35 am-7:28 pm
2 stops33h 53m
$1,010
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Tue 11/3
7:05 am-12:10 am
2 stops25h 05m
Singapore Changi
Wed 11/25
1:35 am-1:35 pm
2 stops28h 00m
$1,010
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 1/21
5:10 pm-8:25 pm
2 stops35h 15m
Singapore Changi
Wed 2/10
1:35 am-4:13 pm
2 stops30h 38m
$1,010
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Fri 9/4
6:20 am-5:00 am
2 stops31h 40m
Singapore Changi
Sun 9/20
1:25 am-5:09 pm
2 stops30h 44m
$1,024
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Mon 8/17
7:05 am-11:55 pm
2 stops25h 50m
Singapore Changi
Tue 9/1
10:00 pm-7:44 pm
2 stops36h 44m
$1,082
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 12/3
7:00 am-12:10 am
2 stops25h 10m
Singapore Changi
Sun 12/20
1:35 am-5:03 pm
2 stops31h 28m
$1,088
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Tue 12/1
5:38 pm-8:25 pm
2 stops34h 47m
Singapore Changi
Fri 12/18
10:30 pm-5:03 pm
2 stops34h 33m
$1,088
Quickest round-trip
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 8/27
7:00 am-6:35 pm
1 stop20h 35m
Singapore Changi
Thu 9/10
8:35 pm-10:11 am
1 stop28h 36m
$1,134
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 11/4
9:32 pm-7:05 pm
1 stop29h 33m
Singapore Changi
Wed 11/11
9:15 am-1:30 pm
1 stop20h 15m
$1,141
Showing 1-10 of 18 resultsSorted by cheapest first
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
PDX-SG0
PDX-SIN
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 $891). Flying from Portland to Singapore in December is currently the most expensive (average of $1,768). 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 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 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 July 31, 2026.
Read reviews from past customers who have flown Singapore Airlines,United Airlines, andAir Canada from Portland to Singapore. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.2
Entertainment
8.1
Food
7.8
Crew
8.6
Comfort
8.0
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Overall
8.2
Entertainment
8.1
Food
7.8
Crew
8.6
Comfort
8.0
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Overall
8.2
Entertainment
8.1
Food
7.8
Crew
8.6
Comfort
8.0
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Overall
8.2
Entertainment
8.1
Food
7.8
Crew
8.6
Comfort
8.0
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - 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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Alternative routes for Portland to Singapore
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Complete your trip
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Search flights from Portland to Singapore by cabin class
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Portland and Singapore flights
Browse other Portland and Singapore flight options. Last updated on July 31, 2026.
Popular flight searches
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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 July 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$719 | Average$995 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$789 | Average$996 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,024 | Average$1,201 | FlexibilityNo cancel fee | On-time69% |