S$ 441 Find Cheap Flights from Portland to Singapore

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Singapore departing on 9-3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Portland to Singapore

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Portland to Singapore that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Portland to Singapore

Wed, 6 May - Wed, 13 May
Cathay Pacific Logo
07:11 - 00:45
PDX
-
SIN
26h 34m
2 stops
Cathay Pacific Logo
07:20 - 16:49
SIN
-
PDX
24h 29m
2 stops
S$ 1,096Cathay Pacific
Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
07:05 - 19:10
PDX
-
SIN
21h 05m
1 stop
Multiple Airlines Logo
09:00 - 21:38
SIN
-
PDX
27h 38m
1 stop
S$ 1,120Multiple Airlines
Wed, 6 May - Wed, 13 May
Singapore Airlines Logo
07:00 - 19:10
PDX
-
SIN
21h 10m
1 stop
Singapore Airlines Logo
09:15 - 13:50
SIN
-
PDX
19h 35m
1 stop
S$ 1,122Singapore Airlines
Tue, 17 Mar - Tue, 24 Mar
Multiple Airlines Logo
06:00 - 17:45
PDX
-
SIN
20h 45m
1 stop
Multiple Airlines Logo
09:00 - 21:38
SIN
-
PDX
27h 38m
1 stop
S$ 1,135Multiple Airlines
Wed, 4 Mar - Tue, 10 Mar
Multiple Airlines Logo
15:52 - 09:35
PDX
-
SIN
25h 43m
2 stops
Multiple Airlines Logo
00:05 - 22:45
SIN
-
PDX
37h 40m
2 stops
S$ 1,154Multiple Airlines
Tue, 3 Mar - Tue, 10 Mar
Cathay Pacific Logo
17:39 - 11:55
PDX
-
SIN
26h 16m
2 stops
Cathay Pacific Logo
18:00 - 09:35
SIN
-
PDX
30h 35m
2 stops
S$ 1,162Cathay Pacific
Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
17:49 - 12:40
PDX
-
SIN
27h 51m
2 stops
Multiple Airlines Logo
14:00 - 21:38
SIN
-
PDX
22h 38m
2 stops
S$ 1,164Multiple Airlines
Wed, 4 Mar - Mon, 16 Mar
Multiple Airlines Logo
15:52 - 09:35
PDX
-
SIN
25h 43m
2 stops
Multiple Airlines Logo
11:05 - 18:48
SIN
-
PDX
46h 43m
2 stops
S$ 1,181Multiple Airlines
Thu, 7 May - Fri, 15 May
Multiple Airlines Logo
09:53 - 11:45
PDX
-
SIN
34h 52m
2 stops
Multiple Airlines Logo
09:15 - 09:29
SIN
-
PDX
39h 14m
1 stop
S$ 1,183Multiple Airlines
Sun, 3 May - Fri, 15 May
Multiple Airlines Logo
09:53 - 00:45
PDX
-
SIN
47h 52m
2 stops
Multiple Airlines Logo
09:15 - 09:29
SIN
-
PDX
39h 14m
1 stop
S$ 1,211Multiple Airlines
Booking Insights

KAYAK's insights & trends for Portland to Singapore flights

Get data-powered insights and trends into flights from Portland to Singapore to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest month to fly from Portland to Singapore?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Singapore, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Singapore is September, when tickets cost S$ 956 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of return tickets is S$ 2,130 and S$ 1,386 respectively.

How far in advance should I book a flight from Portland to Singapore?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Singapore, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Portland to Singapore, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Find deals

Good to know

Low seasonMay
Cheapest flightS$ 505
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly and prices are also 25% lower on average.
Flight from Portland to Singapore

FAQs - booking Singapore flights

  • How does KAYAK find such low prices on flights from Portland to Singapore?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Singapore.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Singapore?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Singapore is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Singapore?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Portland to Singapore with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Singapore?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to Singapore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Portland to Singapore

Information on your arrival and departure airports

Portland (PDX)