$426+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Sep 24 — Oct 11
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portland to Singapore
Cheapest
Best
Last-minute
One-way
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 August 25, 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 August 25, 2026.
This Air Canada deal was found by Cheapflights users on 8/25. 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 -
1 stop23h 45m
Tue 11/178:40 am -
1 stop16h 46m
Deal found 8/25![Air Canada logo]()
$895
This Air Canada deal was found by Cheapflights users on 8/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:45 pm -
1 stop18h 30m
Sat 10/107:00 am -
1 stop22h 46m
Deal found 8/21![Air Canada logo]()
$932
This FlightHub deal was found by Cheapflights users on 8/21. 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 9/227:45 pm -
1 stop37h 45m
Sat 10/37:00 am -
1 stop17h 31m
Deal found 8/21![Air Canada logo]()
$942
This Air Canada deal was found by Cheapflights users on 8/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:02 pm -
2 stops39h 13m
Sun 10/47:00 am -
1 stop17h 31m
Deal found 8/21![Air Canada logo]()
$946
This Air Canada deal was found by Cheapflights users on 8/23. 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 10/61:03 pm -
2 stops25h 12m
Tue 10/137:00 am -
1 stop27h 11m
Deal found 8/23![Air Canada logo]()
$965
This Air Canada deal was found by Cheapflights users on 8/25. 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 11/83:15 pm -
1 stop23h 45m
Sat 11/288:40 am -
1 stop16h 46m
Deal found 8/25![Air Canada logo]()
$970
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 August 25, 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 August 25, 2026.
This Korean Air deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:02 pm -
2 stops41h 58m
Sun 11/810:30 pm -
2 stops31h 05m
Deal found 8/22![Korean Air logo]()
$1,051
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:00 am -
1 stop20h 35m
Mon 10/58:45 am -
1 stop27h 15m
Deal found 8/21![United Airlines logo]()
$1,146
This Singapore Airlines deal was found by Cheapflights users on 8/21. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/29:50 pm -
1 stop29h 15m
Fri 12/189:05 am -
1 stop22h 26m
Deal found 8/21![Multiple Airlines logo]()
$1,191
This Korean Air deal was found by Cheapflights users on 8/23. 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 1/56:40 am -
2 stops25h 30m
Wed 1/1310:30 pm -
2 stops30h 38m
Deal found 8/23![Korean Air logo]()
$1,109
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:00 am -
1 stop31h 00m
Sat 11/1410:10 am -
1 stop20h 27m
Deal found 8/21![United Airlines logo]()
$1,146
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:00 am -
1 stop20h 35m
Fri 9/258:35 pm -
1 stop18h 59m
Deal found 8/22![United Airlines logo]()
$1,147
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Wed 11/43:40 pm -
1 stop24h 20m
Sun 11/810:10 am -
2 stops23h 59m
Deal found 8/20![United Airlines logo]()
$1,151
This United Airlines deal was found by Cheapflights users on 8/25. 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 9/285:30 am -
1 stop22h 05m
Wed 10/148:45 am -
2 stops27h 25m
Deal found 8/25![United Airlines logo]()
$1,151
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/15:35 am -
2 stops26h 05m
Mon 2/1510:10 am -
1 stop24h 21m
Deal found 8/22![United Airlines logo]()
$1,159
This United Airlines deal was found by Cheapflights users on 8/23. 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 1/57:30 am -
2 stops24h 10m
Wed 1/1310:20 pm -
1 stop18h 34m
Deal found 8/23![United Airlines logo]()
$1,159
Last-minute flights from Portland to SingaporeDiscover last-minute flight deals from Portland to Singapore. Data last updated August 25, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Singapore. Data last updated August 25, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:02 pm -
2 stops39h 13m
Wed 9/238:10 am -
2 stops26h 01m
Deal found 8/22![Multiple Airlines logo]()
$996
This Air Canada deal was found by Cheapflights users on 8/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:02 pm -
2 stops39h 13m
Sun 10/47:00 am -
1 stop17h 31m
Deal found 8/21![Air Canada logo]()
$946
This FlightHub deal was found by Cheapflights users on 8/21. 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 9/227:45 pm -
1 stop37h 45m
Sat 10/37:00 am -
1 stop17h 31m
Deal found 8/21![Air Canada logo]()
$942
This Air Canada deal was found by Cheapflights users on 8/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:10 am -
1 stop28h 05m
Sun 10/117:00 am -
1 stop17h 31m
Deal found 8/21![Air Canada logo]()
$970
This Air Canada deal was found by Cheapflights users on 8/24. 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 9/293:30 pm -
1 stop22h 45m
Sat 10/177:00 am -
1 stop27h 11m
Deal found 8/24![Air Canada logo]()
$988
This Justfly.com deal was found by Cheapflights users on 8/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:30 pm -
1 stop22h 45m
Sun 10/117:00 am -
1 stop22h 46m
Deal found 8/21![Air Canada logo]()
$998
This FlightHub deal was found by Cheapflights users on 8/21. 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 9/293:30 pm -
1 stop22h 45m
Sat 10/107:00 am -
2 stops30h 57m
Deal found 8/21![Air Canada logo]()
$1,008
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 August 25, 2026.
Search for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 1/277:09 am -
1 stop43h 56m
Deal found 8/25![Multiple Airlines logo]()
$426
This SmartFares deal was found by Cheapflights users on 8/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/261:53 pm -
2 stops28h 32m
Deal found 8/21![Multiple Airlines logo]()
$436
This SmartFares deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/259:30 pm -
2 stops44h 55m
Deal found 8/22![Multiple Airlines logo]()
$447
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 1/286:10 pm -
1 stop32h 55m
Deal found 8/25![Multiple Airlines logo]()
$460
This Air Canada deal was found by Cheapflights users on 8/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2610:00 am -
1 stop29h 00m
Deal found 8/21![Air Canada logo]()
$464
This Justfly.com deal was found by Cheapflights users on 8/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:00 am -
1 stop32h 00m
Deal found 8/21![Air Canada logo]()
$474
This FlightHub deal was found by Cheapflights users on 8/25. 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 1/271:39 pm -
2 stops25h 21m
Deal found 8/25![Air Canada logo]()
$478
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:46 pm -
2 stops39h 09m
Deal found 8/21![Multiple Airlines logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 10/245:48 pm -
2 stops37h 07m
Deal found 8/24![Multiple Airlines logo]()
$504
This FlightHub deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:00 am -
1 stop32h 00m
Deal found 8/21![Air Canada 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 August 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $895 (Air Canada) |
One-way from | $436 (SmartFares) |
Popular in | December |
Cheapest in | January |
Average price | $1,039 |
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 7,457,451 searches. Data last updated August 25, 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 Portland - SIN Singapore Changi
PDXSIN
Portland
Wed 11/4
7:02 pm-5:00 am
2 stops41h 58m
Singapore Changi
Sun 11/8
10:30 pm-1:35 pm
2 stops31h 05m
$1,051
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Tue 1/5
6:40 am-12:10 am
2 stops25h 30m
Singapore Changi
Wed 1/13
10:30 pm-1:08 pm
2 stops30h 38m
$1,109
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Mon 9/21
7:00 am-6:35 pm
1 stop20h 35m
Singapore Changi
Mon 10/5
8:45 am-9:00 pm
1 stop27h 15m
$1,146
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Sat 11/7
9:00 am-8:00 am
1 stop31h 00m
Singapore Changi
Sat 11/14
10:10 am-2:37 pm
1 stop20h 27m
$1,146
Quickest round-trip
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Fri 9/18
7:00 am-6:35 pm
1 stop20h 35m
Singapore Changi
Fri 9/25
8:35 pm-12:34 am
1 stop18h 59m
$1,147
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Wed 11/4
3:40 pm-8:00 am
1 stop24h 20m
Singapore Changi
Sun 11/8
10:10 am-6:09 pm
2 stops23h 59m
$1,151
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Mon 9/28
5:30 am-6:35 pm
1 stop22h 05m
Singapore Changi
Wed 10/14
8:45 am-9:10 pm
2 stops27h 25m
$1,151
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Mon 2/1
5:35 am-11:40 pm
2 stops26h 05m
Singapore Changi
Mon 2/15
10:10 am-6:31 pm
1 stop24h 21m
$1,159
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Tue 1/5
7:30 am-11:40 pm
2 stops24h 10m
Singapore Changi
Wed 1/13
10:20 pm-12:54 am
1 stop18h 34m
$1,159
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Wed 12/2
9:50 pm-7:05 pm
1 stop29h 15m
Singapore Changi
Fri 12/18
9:05 am-3:31 pm
1 stop22h 26m
$1,191
Showing 1-10 of 20 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 $1,709). 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 48 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 August 25, 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.
Crew
8.7
Entertainment
8.1
Food
7.8
Comfort
8.0
Overall
8.2
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Crew
8.7
Entertainment
8.1
Food
7.8
Comfort
8.0
Overall
8.2
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Crew
8.7
Entertainment
8.1
Food
7.8
Comfort
8.0
Overall
8.2
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Crew
8.7
Entertainment
8.1
Food
7.8
Comfort
8.0
Overall
8.2
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
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 August 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 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 7,457,451 searches. Data last updated August 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$734 | Average$1,098 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$789 | Average$1,002 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,024 | Average$1,201 | FlexibilityNo cancel fee | On-time69% |