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

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 Ontario to Portland. Visit our flight page for the latest deals!>/a>

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Ontario is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

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

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 to Portland with an airline and back to Ontario with another airline. Visit our flight page for the latest deals!>/a>

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

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 to Portland from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$276 CHEAP FLIGHTS from Ontario to Portland

KAYAK searches hundreds of travel sites at once for deals on flights to Portland

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$303

United Airlines

Thu 1/29Fri 1/30

YOW - PWM • 1 stop

Cheapest one-way

$276

Delta

Mon 1/26

YUL - PWM • 1 stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Portland!

Flight Deals

Cheap Flights from Ontario to Portland

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Ontario to Portland

Thu, Jan 29 - Fri, Jan 30

5:55 pm - 11:30 pm

YOW

PWM

5h 35m1 stop

3:12 pm - 9:56 pm

PWM

YOW

6h 44m1 stop

$303United Airlines

Mon, Jan 26 - Mon, Feb 2

9:45 am - 2:31 pm

YOW

PWM

4h 46m1 stop

8:40 am - 1:32 pm

PWM

YOW

4h 52m1 stop

$304United Airlines

Thu, Jan 29 - Fri, Jan 30

5:55 pm - 11:30 pm

YOW

PWM

5h 35m1 stop

3:12 pm - 9:56 pm

PWM

YOW

6h 44m1 stop

$305United Airlines

Thu, Jan 29 - Fri, Jan 30

5:55 pm - 11:30 pm

YOW

PWM

5h 35m1 stop

8:40 am - 4:23 pm

PWM

YOW

7h 43m2 stops

$360Air Canada

Thu, Jan 29 - Fri, Jan 30

5:55 pm - 11:30 pm

YOW

PWM

5h 35m1 stop

6:00 am - 2:07 pm

PWM

YOW

8h 07m2 stops

$361Air Canada

Sat, Jan 31 - Sat, Feb 7

10:30 am - 9:37 pm

YYZ

PWM

11h 07m2 stops

5:30 am - 4:35 pm

PWM

YYZ

11h 05m1 stop

$382American Airlines

Sat, Jan 31 - Sat, Feb 7

10:30 am - 9:37 pm

YYZ

PWM

11h 07m2 stops

5:30 am - 5:28 pm

PWM

YYZ

11h 58m2 stops

$387American Airlines

Thu, Jan 8 - Thu, Jan 15

6:00 am - 1:45 pm

YYZ

PWM

7h 45m1 stop

6:17 am - 7:13 pm

PWM

YYZ

12h 56m2 stops

$400Delta

Thu, Jan 8 - Mon, Jan 12

6:45 pm - 11:20 am

YYZ

PWM

16h 35m1 stop

2:35 pm - 10:56 pm

PWM

YYZ

8h 21m1 stop

$401Delta

Wed, Jan 21 - Wed, Jan 28

3:55 pm - 10:21 am

YUL

PWM

18h 26m1 stop

11:02 am - 12:43 am

PWM

YUL

37h 41m2 stops

$436Multiple Airlines

Useful Info

Low season	October
High season	May
Cheapest flight	$276

Best time to beat the crowds with an average 4% drop in price.

Flight from Montreal to Portland

How does KAYAK find such low prices on flights from Ontario to Portland?
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 Ontario to Portland.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Portland?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Ontario 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 Ontario to Portland?
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 to Portland with an airline and back to Ontario with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Portland?
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 to Portland from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Jackson

Freeport

Bartlett

Oxford

Windham

Intervale

Tamworth

Falmouth

Durham

Waterford

Everything you need to know for your flight to Portland

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Portland

Portland (PWM)

$276 Find Cheap Flights from Ontario to Portland

KAYAK searches hundreds of travel sites at once for deals on flights to Portland

Everything you should know

Cheap Flights from Ontario to Portland

Recent round-trip flight deals from Ontario to Portland

Recent one-way flight deals from Ontario to Portland

Recent last minute flight deals from Ontario to Portland

Good to know

FAQs for booking flights from Ontario to Portland

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

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 Ontario to Portland.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Ontario 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 Ontario to Portland?

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 to Portland with an airline and back to Ontario with another airline.

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

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 to Portland from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Portland?

Everything you need to know for your flight to Portland

Information on the airport you'll fly into in Portland

Cabin class types available on flights to Ontario

Complete your trip to Portland with a hotel stay or car rental

Find direct flights for Portland

Flights to other popular destinations

Flights from domestic origins to Portland

Choose which airport to fly into in Portland

Find deals for your return flight