What is the cheapest airline that flies from Portland to Ontario?

WestJet, Delta, and United Airlines are the most popular carriers operating from Portland to Ontario

What airlines fly to Region of Ontario?

Air Canada, United Airlines and Delta are the top three most popular airlines that fly to Region of Ontario from Portland according to our data. Air Canada is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 6 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to Ontario?

Prices for flights from Portland Airport to Ontario were last updated today.

How many operators does momondo search for flights from Portland Airport to Ontario?

The number of operators available for flights from Portland Airport to Ontario is 6 as of April 2026.

How old do you have to be to fly from Portland Airport to Ontario?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Ontario.

What documentation or ID do you need to fly to Ontario?

The travel and health documents you'll need for your trip to Ontario may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$126 Cheap Flights from Portland to Ontario in 2026

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Find the cheapest flights from Portland to Ontario

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:30 pm - 1:05 am

PDX

YYZ

7h 35m

1 stop

9:00 am - 1:50 pm

YYZ

PDX

7h 50m

1 stop

$280WestJet

Wed, Aug 12 - Tue, Aug 18

2:30 pm - 1:05 am

PDX

YYZ

7h 35m

1 stop

9:00 am - 1:50 pm

YYZ

PDX

7h 50m

1 stop

$282WestJet

Wed, Aug 5 - Sun, Aug 9

2:30 pm - 1:05 am

PDX

YYZ

7h 35m

1 stop

9:00 am - 1:50 pm

YYZ

PDX

7h 50m

1 stop

$286WestJet

Wed, May 6 - Thu, May 21

2:30 pm - 1:05 am

PDX

YYZ

7h 35m

1 stop

9:00 am - 1:50 pm

YYZ

PDX

7h 50m

1 stop

$288WestJet

Fri, Jul 24 - Sun, Aug 9

2:30 pm - 1:05 am

PDX

YYZ

7h 35m

1 stop

6:10 am - 1:50 pm

YYZ

PDX

10h 40m

2 stops

$289WestJet

Wed, May 6 - Tue, Jun 2

3:30 pm - 7:10 am

PDX

YUL

12h 40m

2 stops

8:10 am - 7:06 pm

YUL

PDX

13h 56m

2 stops

$352Air Canada

Fri, Sep 11 - Sat, Sep 26

8:20 am - 7:45 pm

PDX

YUL

8h 25m

1 stop

6:35 pm - 12:47 am

YUL

PDX

9h 12m

1 stop

$356United Airlines

Wed, Sep 9 - Sun, Sep 13

11:15 pm - 10:40 am

PDX

YUL

8h 25m

1 stop

6:35 pm - 12:47 am

YUL

PDX

9h 12m

1 stop

$364United Airlines

Mon, Aug 24 - Tue, Sep 8

10:59 pm - 10:06 am

PDX

YTZ

8h 07m

1 stop

12:15 pm - 10:18 pm

YTZ

PDX

13h 03m

1 stop

$413Air Canada

Mon, Sep 28 - Fri, Oct 2

5:31 pm - 5:35 am

PDX

YOW

33h 04m

2 stops

7:20 am - 1:50 pm

YOW

PDX

9h 30m

1 stop

$485Multiple Airlines

Mon, Jun 1 - Sat, Jun 6

WestJet flights from Portland to Region of Ontario

Our best WestJet deals on Portland to Region of Ontario flight tickets

WestJet

Aug 12

PDX2:30 pmPortland

7h 35m

1 stop

YYZ1:05 amToronto Pearson Intl

Aug 18

YYZ9:00 amToronto Pearson Intl

7h 50m

1 stop

PDX1:50 pmPortland

$280

WestJet

Aug 5

PDX2:30 pmPortland

7h 35m

1 stop

YYZ1:05 amToronto Pearson Intl

Aug 9

YYZ9:00 amToronto Pearson Intl

7h 50m

1 stop

PDX1:50 pmPortland

$282

WestJet

May 6

PDX2:30 pmPortland

7h 35m

1 stop

YYZ1:05 amToronto Pearson Intl

May 21

YYZ9:00 amToronto Pearson Intl

7h 50m

1 stop

PDX1:50 pmPortland

$286

United Airlines flights from Portland to Region of Ontario

Our best United Airlines deals on Portland to Region of Ontario flight tickets

United Airlines

May 15

PDX11:55 pmPortland

10h 47m

1 stop

YYZ1:42 pmToronto Pearson Intl

May 16

YYZ3:53 pmToronto Pearson Intl

10h 06m

1 stop

PDX10:59 pmPortland

$341

United Airlines

Jun 26

PDX5:00 pmPortland

13h 54m

1 stop

YYZ9:54 amToronto Pearson Intl

Sep 19

YYZ4:18 pmToronto Pearson Intl

9h 34m

1 stop

PDX10:52 pmPortland

$354

United Airlines

Sep 9

PDX8:20 amPortland

8h 25m

1 stop

YUL7:45 pmMontreal Pierre Elliott Trudeau Intl

Sep 13

YUL6:35 pmMontreal Pierre Elliott Trudeau Intl

9h 12m

1 stop

PDX12:47 amPortland

$356

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 8/12

2:30 pm-1:05 am

1 stop7h 35m

Toronto Pearson Intl

Tue 8/18

9:00 am-1:50 pm

1 stop7h 50m

$280

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 8/5

2:30 pm-1:05 am

1 stop7h 35m

Toronto Pearson Intl

Sun 8/9

9:00 am-1:50 pm

1 stop7h 50m

$282

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 5/6

2:30 pm-1:05 am

1 stop7h 35m

Toronto Pearson Intl

Thu 5/21

9:00 am-1:50 pm

1 stop7h 50m

$286

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 7/24

2:30 pm-1:05 am

1 stop7h 35m

Toronto Pearson Intl

Sun 8/9

9:00 am-1:50 pm

1 stop7h 50m

$288

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 5/6

2:30 pm-1:05 am

1 stop7h 35m

Toronto Pearson Intl

Tue 6/2

6:10 am-1:50 pm

2 stops10h 40m

$289

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Fri 9/11

3:30 pm-7:10 am

2 stops12h 40m

Montreal Pierre Elliott Trudeau Intl

Sat 9/26

8:10 am-7:06 pm

2 stops13h 56m

$352

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Wed 9/9

8:20 am-7:45 pm

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 9/13

6:35 pm-12:47 am

1 stop9h 12m

$356

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Mon 8/24

11:15 pm-10:40 am

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Tue 9/8

6:35 pm-12:47 am

1 stop9h 12m

$364

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Mon 9/28

10:59 pm-10:06 am

1 stop8h 07m

Toronto Island

Fri 10/2

12:15 pm-10:18 pm

1 stop13h 03m

$413

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Mon 6/1

5:31 pm-5:35 am

2 stops33h 04m

Ottawa

Sat 6/6

7:20 am-1:50 pm

1 stop9h 30m

$485

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Region of Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Region of Ontario?

The month of August is, on average, the cheapest month to fly to Region of Ontario from Portland, with most prices found around $345. If you aren’t able to travel during the month of August, then book flights to Region of Ontario from Portland during January instead. Flights to Region of Ontario in January, while not as cheap as those in August, still average around $350.

How far in advance should I book a flight to Region of Ontario?

You are more likely to see cheaper flights to Region of Ontario from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $438 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Portland for as low as $170 on momondo.

Can stopping save me money on Portland to Region of Ontario flights?

You could potentially save up to 18% on your flight if you consider stops on a Portland to Region of Ontario flight.

Cheap Portland to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Region of Ontario

Fastest flight time	6h 31m
Direct flights	None

The fastest flight from Portland to Region of Ontario takes 6h 31m

There are no direct flights from Portland to Region of Ontario. There are no popular flight routes from Portland to Region of Ontario.

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Frequently asked questions about flying from Portland to Ontario

When did momondo last update prices for flights from Portland Airport to Ontario?
Prices for flights from Portland Airport to Ontario were last updated today.
How many operators does momondo search for flights from Portland Airport to Ontario?
The number of operators available for flights from Portland Airport to Ontario is 6 as of April 2026.
How old do you have to be to fly from Portland Airport to Ontario?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents you'll need for your trip to Ontario may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Portland to Region of Ontario

Compare and see reviews for airlines that fly from Portland to Region of Ontario with momondo

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom $113	Free Cancellation	Rating 7.2 3,322 reviews	Search WestJet flights
Air Canada	PriceFrom $140	Free Cancellation	Rating 7.1 10,943 reviews	Search Air Canada flights
Delta	PriceFrom $144	Free Cancellation	Rating 7.9 8,424 reviews	Search Delta flights
United Airlines	PriceFrom $148	Free Cancellation	Rating 7.4 9,608 reviews	Search United Airlines flights
American Airlines	PriceFrom $343	Free Cancellation	Rating 7.1 11,629 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $344	Free Cancellation	Rating 7.9 12,265 reviews	Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Ontario?

Finding the right flight to Ontario from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

Can I find flights from Portland to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portland to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Portland to Ontario?

momondo provides multiple filters to help you find the best flight to Ontario from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Portland to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.