$424 Find Cheap Flights from Portland to Singapore - Compare and Save

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 8/20. 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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Book Cheap Portland to Singapore Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 round-trip flight deals from Portland to Singapore

Wed, Nov 4 - Tue, Nov 10
Multiple Airlines Logo
6:47 am - 3:00 pm
PDX
-
SIN
40h 13m
2 stops
Multiple Airlines Logo
12:25 am - 11:10 pm
SIN
-
PDX
38h 45m
2 stops
$914Multiple Airlines
Tue, Nov 3 - Tue, Nov 17
Air Canada Logo
3:15 pm - 7:00 am
PDX
-
SIN
23h 45m
1 stop
Air Canada Logo
8:40 am - 9:26 am
SIN
-
PDX
16h 46m
1 stop
$918Air Canada
Tue, Sep 8 - Thu, Sep 24
Air Canada Logo
3:30 pm - 5:15 am
PDX
-
SIN
22h 45m
1 stop
Air Canada Logo
7:00 am - 9:31 am
SIN
-
PDX
17h 31m
1 stop
$918Air Canada
Thu, Jan 21 - Thu, Feb 11
Air Canada Logo
7:00 am - 7:00 am
PDX
-
SIN
32h 00m
1 stop
Air Canada Logo
8:40 am - 2:41 pm
SIN
-
PDX
22h 01m
1 stop
$918Air Canada
Wed, Sep 16 - Wed, Sep 23
Multiple Airlines Logo
7:03 am - 11:55 pm
PDX
-
SIN
25h 52m
2 stops
Multiple Airlines Logo
7:30 am - 4:50 pm
SIN
-
PDX
24h 20m
2 stops
$925Multiple Airlines
Wed, Sep 16 - Wed, Sep 23
Delta Logo
5:30 am - 5:00 am
PDX
-
SIN
32h 30m
2 stops
Delta Logo
7:30 am - 10:02 pm
SIN
-
PDX
29h 32m
2 stops
$1,005Delta
Mon, Jan 18 - Thu, Feb 18
Singapore Airlines Logo
9:50 pm - 7:05 pm
PDX
-
SIN
29h 15m
1 stop
Singapore Airlines Logo
9:15 am - 4:50 pm
SIN
-
PDX
23h 35m
1 stop
$1,073Singapore Airlines
Thu, Jan 21 - Thu, Feb 11
Singapore Airlines Logo
9:50 pm - 7:05 pm
PDX
-
SIN
29h 15m
1 stop
Singapore Airlines Logo
9:15 am - 4:50 pm
SIN
-
PDX
23h 35m
1 stop
$1,120Singapore Airlines
Mon, Oct 26 - Mon, Nov 9
United Airlines Logo
7:10 am - 8:15 pm
PDX
-
SIN
22h 05m
1 stop
United Airlines Logo
10:10 am - 6:24 pm
SIN
-
PDX
24h 14m
1 stop
$1,146United Airlines
Wed, Sep 16 - Wed, Sep 23
United Airlines Logo
7:00 am - 6:35 pm
PDX
-
SIN
20h 35m
1 stop
United Airlines Logo
8:35 pm - 10:15 am
SIN
-
PDX
28h 40m
1 stop
$1,146United 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 January, when tickets cost $891 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,768 and $1,295 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 2 weeks before departure, which saves you about 70% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 2 weeks before departure.

Find deals

Good to know

Low season

May

Cheapest flight

$424
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 5% 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 travelers 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 round-trip 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)