$438+ Cheap flights from Portland (PDX) to Singapore (SIN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Oct 18 — Oct 251
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
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.Cheap flight deals from Portland to Singapore
Cheapest
Best
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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 September 18, 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 September 18, 2026.
This Air Canada deal was found by Cheapflights users on 9/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/33:20 pm -
1 stop23h 40m
Tue 11/178:40 am -
1 stop28h 06m
Deal found 9/16![Air Canada logo]()
$895
This Justfly.com deal was found by Cheapflights users on 9/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:05 am -
1 stop32h 55m
Sun 11/228:40 am -
2 stops32h 04m
Deal found 9/16![Air Canada logo]()
$929
This Air Canada deal was found by Cheapflights users on 9/14. 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 9/277:45 pm -
1 stop18h 30m
Thu 10/17:00 am -
1 stop17h 31m
Deal found 9/14![Air Canada logo]()
$932
This flugladen.de deal was found by Cheapflights users on 9/15. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:45 pm -
1 stop18h 30m
Thu 10/87:00 am -
1 stop27h 11m
Deal found 9/15![Air Canada logo]()
$938
This Justfly.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/297:10 pm -
1 stop19h 50m
Fri 12/118:40 am -
2 stops32h 03m
Deal found 9/13![Air Canada logo]()
$967
This Air Canada deal was found by Cheapflights users on 9/14. 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 10/223:30 pm -
1 stop22h 45m
Thu 10/298:40 am -
1 stop21h 01m
Deal found 9/14![Air Canada logo]()
$970
This Justfly.com deal was found by Cheapflights users on 9/14. 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.
Sat 11/711:30 pm -
2 stops39h 30m
Fri 11/138:40 am -
1 stop25h 51m
Deal found 9/14![Air Canada logo]()
$974
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 September 18, 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 September 18, 2026.
This Qatar Airways deal was found by Cheapflights users on 9/14. 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.
Thu 10/228:09 am -
2 stops40h 36m
Wed 10/283:15 am -
2 stops33h 41m
Deal found 9/14![Qatar Airways logo]()
$1,066
This Korean Air deal was found by Cheapflights users on 9/17. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:51 am -
2 stops28h 09m
Tue 10/131:25 am -
2 stops30h 39m
Deal found 9/17![Korean Air logo]()
$1,112
This Singapore Airlines deal was found by Cheapflights users on 9/15. 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 2/179:50 pm -
1 stop29h 15m
Thu 2/259:05 am -
1 stop27h 43m
Deal found 9/15![Multiple Airlines logo]()
$1,142
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 am -
1 stop20h 35m
Wed 10/148:35 pm -
1 stop28h 35m
Deal found 9/18![United Airlines logo]()
$1,146
This Korean Air deal was found by Cheapflights users on 9/17. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:29 pm -
2 stops43h 31m
Fri 12/1810:30 pm -
2 stops40h 50m
Deal found 9/17![Korean Air logo]()
$1,140
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 2/171:39 pm -
1 stop26h 21m
Fri 2/2610:10 am -
1 stop24h 21m
Deal found 9/16![United Airlines logo]()
$1,147
This Korean Air deal was found by Cheapflights users on 9/17. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:29 pm -
2 stops34h 56m
Fri 12/1810:30 pm -
2 stops40h 50m
Deal found 9/17![Korean Air logo]()
$1,140
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 2/177:30 am -
1 stop20h 45m
Fri 2/1910:10 am -
1 stop26h 23m
Deal found 9/17![United Airlines logo]()
$1,147
This Korean Air deal was found by Cheapflights users on 9/17. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/176:40 am -
2 stops25h 35m
Fri 2/1910:30 pm -
2 stops29h 38m
Deal found 9/17![Korean Air logo]()
$1,140
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Thu 1/214:05 pm -
2 stops36h 10m
Thu 2/1110:20 pm -
1 stop18h 34m
Deal found 9/17![United Airlines logo]()
$1,151
Last-minute flights from Portland to SingaporeDiscover last-minute flight deals from Portland to Singapore. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Singapore. Data last updated September 18, 2026 and is based on user searches.
This flugladen.de deal was found by Cheapflights users on 9/15. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:45 pm -
1 stop18h 30m
Thu 10/87:00 am -
1 stop27h 11m
Deal found 9/15![Air Canada logo]()
$938
This Air Canada deal was found by Cheapflights users on 9/14. 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 9/277:45 pm -
1 stop18h 30m
Thu 10/17:00 am -
1 stop17h 31m
Deal found 9/14![Air Canada logo]()
$932
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:48 am -
2 stops30h 02m
Tue 10/133:15 am -
2 stops34h 47m
Deal found 9/16![Qatar Airways logo]()
$1,002
This FlightHub deal was found by Cheapflights users on 9/14. 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 10/47:09 am -
2 stops49h 06m
Sun 10/113:15 am -
2 stops34h 47m
Deal found 9/14![Qatar Airways logo]()
$1,030
This Justfly.com deal was found by Cheapflights users on 9/15. 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.
Mon 10/128:09 am -
2 stops33h 41m
Mon 10/268:15 pm -
2 stops40h 41m
Deal found 9/15![Qatar Airways logo]()
$1,027
This Air Canada deal was found by Cheapflights users on 9/14. 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 10/223:30 pm -
1 stop22h 45m
Thu 10/298:40 am -
1 stop21h 01m
Deal found 9/14![Air Canada logo]()
$970
This Justfly.com deal was found by Cheapflights users on 9/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:05 am -
1 stop32h 55m
Sun 11/228:40 am -
2 stops32h 04m
Deal found 9/16![Air Canada logo]()
$929
This Air Canada deal was found by Cheapflights users on 9/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:30 pm -
2 stops40h 30m
Sat 11/78:40 am -
1 stop22h 01m
Deal found 9/16![Air Canada logo]()
$984
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 September 18, 2026.
Search for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 1/126:10 pm -
1 stop32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 1/115:06 pm -
1 stop33h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$440
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 1/135:06 pm -
1 stop33h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$443
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 12/110:56 am -
1 stop40h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 1/146:10 pm -
1 stop32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$456
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Mon 12/710:56 am -
3 stops55h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$458
This FlightHub deal was found by Cheapflights users on 9/13. 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 1/123:30 pm -
2 stops23h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Air Canada logo]()
$478
This SmartFares deal was found by Cheapflights users on 9/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:40 pm -
2 stops22h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$488
This Air Canada deal was found by Cheapflights users on 9/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:20 pm -
1 stop23h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Air Canada logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 12/25:40 pm -
2 stops36h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$503
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 1/106:10 pm -
1 stop32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$508
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 September 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $895 (Air Canada) |
One-way from | $438 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $1,046 |
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 September 18, 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
Fri 9/25
7:40 pm-9:05 am
2 stops22h 25m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$488
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Thu 10/22
11:03 am-3:45 pm
2 stops37h 42m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$524
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Tue 10/13
12:18 pm-9:15 pm
2 stops41h 57m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$527
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Thu 1/14
1:39 pm-7:00 am
2 stops25h 21m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$551
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Sun 1/10
6:25 am-8:45 am
2 stops34h 20m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$555
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Tue 10/13
6:18 pm-6:45 pm
3 stops33h 27m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$572
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Fri 1/15
7:30 am-8:45 am
2 stops33h 15m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$595
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Sun 11/29
2:15 pm-5:00 am
2 stops46h 45m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$600
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Thu 10/22
12:11 pm-12:10 pm
3 stops32h 59m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$641
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Thu 1/14
7:09 am-6:55 am
3 stops31h 46m
Singapore Changi
Wed 12/31
12:00 am-8:30 am
Nonstop0h 00m
$645
Showing 1-10 of 22 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 September.
| 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 89 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, April is the cheapest month in which you can book a flight from Portland to Singapore (average of $996). Flying from Portland to Singapore in December is currently the most expensive (average of $1,412). 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?
Airfare is below average for this route at the moment.
Portland to Singapore flights typically cost between $951 and $1,068 in November.The cheapest round-trip price found within the last 5 days was $895 on Air Canada (Nov 3-Nov 17).
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 September 18, 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
Entertainment
8.1
Overall
8.2
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Comfort
8.0
Boarding
8.3
Crew
8.6
Food
7.8
Entertainment
8.1
Overall
8.2
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Comfort
8.0
Boarding
8.3
Crew
8.6
Food
7.8
Entertainment
8.1
Overall
8.2
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Comfort
8.0
Boarding
8.3
Crew
8.6
Food
7.8
Entertainment
8.1
Overall
8.2
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Complete your trip
Flights by cabin class
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Other flights from Portland
Popular flights
Singapore flight routes
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 September 18, 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 September 18, 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 September 18, 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 September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$789 | Average$1,013 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$796 | Average$1,220 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,024 | Average$1,212 | FlexibilityNo cancel fee | On-time69% |