$489+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Sep 16 — Sep 231
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
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 17, 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 17, 2026.
This oojo deal was found by Cheapflights users on 8/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:03 am -
2 stops32h 07m
Mon 9/149:50 pm -
2 stops39h 16m
Deal found 8/13![Japan Airlines logo]()
$1,003
This Cheapflightsfares deal was found by Cheapflights users on 8/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:08 am -
2 stops33h 37m
Sun 11/223:15 am -
2 stops32h 33m
Deal found 8/13![Qatar Airways logo]()
$1,012
This oojo deal was found by Cheapflights users on 8/16. 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.
Tue 11/38:08 am -
2 stops32h 37m
Mon 11/163:15 am -
2 stops27h 58m
Deal found 8/16![Qatar Airways logo]()
$1,013
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:03 am -
1 stop21h 07m
Tue 10/69:05 am -
1 stop19h 27m
Deal found 8/15![Multiple Airlines logo]()
$1,020
This Gotogate deal was found by Cheapflights users on 8/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:07 am -
2 stops43h 38m
Mon 10/53:15 am -
2 stops33h 41m
Deal found 8/15![Qatar Airways logo]()
$1,023
This Gotogate deal was found by Cheapflights users on 8/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:48 am -
2 stops42h 27m
Wed 10/73:15 am -
2 stops34h 47m
Deal found 8/16![Qatar Airways logo]()
$1,026
This oojo deal was found by Cheapflights users on 8/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:09 am -
2 stops41h 36m
Tue 10/133:15 am -
2 stops28h 35m
Deal found 8/15![Qatar Airways logo]()
$1,032
This Cheapflightsfares deal was found by Cheapflights users on 8/16. 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.
Sun 9/2711:48 am -
2 stops36h 57m
Sat 10/103:15 am -
2 stops34h 47m
Deal found 8/16![Qatar Airways logo]()
$1,050
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 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
Thu 10/299:15 am -
1 stop19h 17m
Deal found 8/15![Multiple Airlines logo]()
$1,051
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 17, 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 17, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 8/16. 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.
Thu 1/2110:31 am -
2 stops36h 24m
Wed 2/103:15 am -
2 stops33h 58m
Deal found 8/16![Qatar Airways logo]()
$1,012
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/117:15 pm -
1 stop20h 00m
Fri 9/188:45 am -
1 stop27h 14m
Deal found 8/12![United Airlines logo]()
$1,146
This Gotogate deal was found by Cheapflights users on 8/12. 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 9/117:09 am -
2 stops34h 41m
Fri 9/187:40 pm -
2 stops39h 10m
Deal found 8/12![Qatar Airways logo]()
$1,063
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Sat 11/77:09 am -
1 stop21h 06m
Sat 11/1410:20 pm -
1 stop27h 58m
Deal found 8/16![United Airlines logo]()
$1,146
This Qatar Airways deal was found by Cheapflights users on 8/15. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:30 am -
2 stops30h 15m
Mon 2/88:15 pm -
2 stops40h 58m
Deal found 8/15![Qatar Airways logo]()
$1,065
This United Airlines deal was found by Cheapflights users on 8/16. 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 11/117:10 am -
1 stop21h 05m
Mon 11/2310:10 am -
1 stop28h 36m
Deal found 8/16![United Airlines logo]()
$1,146
This United Airlines deal was found by Cheapflights users on 8/12. 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 11/77:09 am -
1 stop21h 06m
Fri 11/1310:20 pm -
1 stop18h 24m
Deal found 8/12![United Airlines logo]()
$1,146
This United Airlines deal was found by Cheapflights users on 8/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:30 am -
1 stop23h 45m
Thu 10/2910:10 am -
1 stop23h 14m
Deal found 8/15![United Airlines logo]()
$1,146
This United Airlines deal was found by Cheapflights users on 8/16. 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 9/285:30 am -
1 stop22h 05m
Wed 10/148:45 am -
2 stops27h 25m
Deal found 8/16![United Airlines logo]()
$1,151
Last-minute flights from Portland to SingaporeDiscover last-minute flight deals from Portland to Singapore. Data last updated August 17, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Singapore. Data last updated August 17, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 8/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:03 am -
2 stops32h 07m
Mon 9/149:50 pm -
2 stops39h 16m
Deal found 8/13![Japan Airlines logo]()
$1,003
This Gotogate deal was found by Cheapflights users on 8/12. 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 9/117:09 am -
2 stops34h 41m
Fri 9/187:40 pm -
2 stops39h 10m
Deal found 8/12![Qatar Airways logo]()
$1,063
This Cheapflightsfares deal was found by Cheapflights users on 8/16. 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.
Sun 9/2711:48 am -
2 stops36h 57m
Sat 10/103:15 am -
2 stops34h 47m
Deal found 8/16![Qatar Airways logo]()
$1,050
This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:12 pm -
2 stops43h 08m
Sat 10/31:55 am -
2 stops35h 11m
Deal found 8/12![American Airlines logo]()
$1,054
This FlightHub deal was found by Cheapflights users on 8/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:09 am -
2 stops41h 36m
Tue 10/133:15 am -
2 stops33h 41m
Deal found 8/16![Qatar Airways logo]()
$1,027
This oojo deal was found by Cheapflights users on 8/12. 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 9/287:03 am -
1 stop21h 07m
Wed 10/149:05 am -
1 stop26h 45m
Deal found 8/12![Singapore Airlines logo]()
$1,052
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:03 am -
1 stop21h 07m
Tue 10/69:05 am -
1 stop19h 27m
Deal found 8/15![Multiple Airlines logo]()
$1,020
This Gotogate deal was found by Cheapflights users on 8/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:07 am -
2 stops43h 38m
Mon 10/53:15 am -
2 stops33h 41m
Deal found 8/15![Qatar Airways logo]()
$1,023
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 17, 2026.
Search for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated August 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Thu 2/117:00 am -
2 stops25h 55m
Deal found 8/16![Multiple Airlines logo]()
$489
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 9/116:50 pm -
2 stops35h 40m
Deal found 8/12![Multiple Airlines logo]()
$501
This Ovago deal was found by Cheapflights users on 8/12. 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.
Sat 9/123:00 pm -
2 stops42h 20m
Deal found 8/12![Multiple Airlines logo]()
$535
This SmartFares deal was found by Cheapflights users on 8/12. 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.
Tue 12/299:35 pm -
2 stops43h 10m
Deal found 8/12![Qatar Airways logo]()
$537
This Booking.com deal was found by Cheapflights users on 8/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/1211:40 am -
2 stops29h 05m
Deal found 8/16![Alaska Airlines logo]()
$555
This Cheapflightsfares deal was found by Cheapflights users on 8/16. 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.
Sat 8/2210:45 am -
2 stops38h 00m
Deal found 8/16![Qatar Airways logo]()
$565
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 8/225:56 pm -
3 stops44h 04m
Deal found 8/16![Multiple Airlines logo]()
$604
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 2/122:30 pm -
3 stops41h 40m
Deal found 8/16![Multiple Airlines logo]()
$634
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/282:52 pm -
2 stops41h 48m
Deal found 8/12![Multiple Airlines logo]()
$641
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 August 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,003 (oojo) |
One-way from | $489 (Kiwi.com) |
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 2,558,603 searches. Data last updated August 17, 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
Thu 1/21
10:31 am-2:55 pm
2 stops36h 24m
Singapore Changi
Wed 2/10
3:15 am-9:13 pm
2 stops33h 58m
$1,012
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Fri 9/11
7:09 am-8:50 am
2 stops34h 41m
Singapore Changi
Fri 9/18
7:40 pm-7:50 pm
2 stops39h 10m
$1,063
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Wed 12/30
10:30 am-8:45 am
2 stops30h 15m
Singapore Changi
Mon 2/8
8:15 pm-9:13 pm
2 stops40h 58m
$1,065
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Fri 9/11
7:15 pm-6:15 am
1 stop20h 00m
Singapore Changi
Fri 9/18
8:45 am-8:59 pm
1 stop27h 14m
$1,146
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Sat 11/7
7:09 am-8:15 pm
1 stop21h 06m
Singapore Changi
Sat 11/14
10:20 pm-10:18 am
1 stop27h 58m
$1,146
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Wed 11/11
7:10 am-8:15 pm
1 stop21h 05m
Singapore Changi
Mon 11/23
10:10 am-10:46 pm
1 stop28h 36m
$1,146
Quickest round-trip
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Sat 11/7
7:09 am-8:15 pm
1 stop21h 06m
Singapore Changi
Fri 11/13
10:20 pm-12:44 am
1 stop18h 24m
$1,146
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Sat 10/24
5:30 am-8:15 pm
1 stop23h 45m
Singapore Changi
Thu 10/29
10:10 am-6:24 pm
1 stop23h 14m
$1,146
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
Cheapest one-way
PortlandSingapore
PDX Portland - SIN Singapore Changi
PDXSIN
Portland
Fri 9/11
6:50 pm-9:30 pm
2 stops35h 40m
$501
Showing 1-10 of 18 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 August.
| 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, 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 much does it cost to fly round-trip from Portland to Singapore?
Airfare is typical for this route at the moment.
Portland to Singapore flights typically cost between $989 and $1,240 in September.The cheapest round-trip price found within the last 5 days was $1,003 on Japan Airlines (Sep 10-Sep 14).
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 17, 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.
Crew
8.6
Food
7.8
Boarding
8.3
Comfort
8.0
Overall
8.2
Entertainment
8.1
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Crew
8.6
Food
7.8
Boarding
8.3
Comfort
8.0
Overall
8.2
Entertainment
8.1
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Crew
8.6
Food
7.8
Boarding
8.3
Comfort
8.0
Overall
8.2
Entertainment
8.1
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Crew
8.6
Food
7.8
Boarding
8.3
Comfort
8.0
Overall
8.2
Entertainment
8.1
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
Other flight options
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 August 17, 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 August 17, 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 August 17, 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 August 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$734 | Average$1,078 | 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% |