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

Air Canada, United Airlines, and Delta 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 38% 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 January 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.

$131 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.

11:59 pm - 2:01 pm

PDX

YYZ

11h 02m

1 stop

4:10 pm - 11:00 pm

YYZ

PDX

9h 50m

1 stop

$306United Airlines

Tue, Mar 24 - Wed, Mar 25

3:52 pm - 3:35 pm

PDX

YYZ

20h 43m

1 stop

4:45 pm - 11:44 pm

YYZ

PDX

9h 59m

1 stop

$309Alaska Airlines

Wed, Mar 4 - Wed, Mar 11

6:00 am - 3:35 pm

PDX

YYZ

6h 35m

1 stop

4:45 pm - 10:41 pm

YYZ

PDX

8h 56m

1 stop

$315Alaska Airlines

Sat, Mar 7 - Fri, Mar 13

7:05 pm - 6:19 am

PDX

YYZ

8h 14m

1 stop

9:00 am - 2:40 pm

YYZ

PDX

8h 40m

1 stop

$316Air Canada

Mon, Feb 2 - Thu, Feb 5

2:00 pm - 5:50 am

PDX

YYZ

12h 50m

2 stops

8:00 am - 1:20 pm

YYZ

PDX

8h 20m

1 stop

$317WestJet

Wed, Jul 8 - Tue, Jul 14

3:15 pm - 5:38 am

PDX

YYZ

11h 23m

2 stops

8:00 am - 2:40 pm

YYZ

PDX

9h 40m

1 stop

$322Air Canada

Sat, Mar 7 - Sat, Apr 4

2:00 pm - 12:42 am

PDX

YUL

7h 42m

1 stop

6:45 am - 1:20 pm

YUL

PDX

33h 35m

2 stops

$379WestJet

Sat, May 23 - Wed, May 27

12:40 am - 1:40 pm

PDX

YUL

10h 00m

1 stop

2:40 pm - 8:30 pm

YUL

PDX

8h 50m

1 stop

$383Delta

Wed, Feb 18 - Wed, Feb 25

10:39 am - 3:58 pm

PDX

YTZ

26h 19m

2 stops

1:30 pm - 8:49 pm

YTZ

PDX

10h 19m

1 stop

$401Multiple Airlines

Sat, Feb 28 - Sat, Mar 7

10:39 am - 10:35 am

PDX

YTZ

20h 56m

1 stop

1:30 pm - 8:49 pm

YTZ

PDX

10h 19m

1 stop

$402Multiple Airlines

Sat, Feb 28 - Sat, Mar 7

United Airlines flights from Portland to Region of Ontario

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

United Airlines

Mar 24

PDX11:59 pmPortland

11h 02m

1 stop

YYZ2:01 pmToronto Pearson Intl

Mar 25

YYZ4:10 pmToronto Pearson Intl

9h 50m

1 stop

PDX11:00 pmPortland

$306

United Airlines

Jan 30

PDX11:59 pmPortland

11h 02m

1 stop

YYZ2:01 pmToronto Pearson Intl

Feb 1

YYZ12:45 pmToronto Pearson Intl

12h 04m

1 stop

PDX9:49 pmPortland

$331

United Airlines

Feb 19

PDX10:38 pmPortland

7h 58m

1 stop

YYZ9:36 amToronto Pearson Intl

Feb 23

YYZ3:45 pmToronto Pearson Intl

23h 53m

2 stops

PDX12:38 pmPortland

$336

Alaska Airlines flights from Portland to Region of Ontario

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

Alaska Airlines

Mar 4

PDX3:52 pmPortland

20h 43m

1 stop

YYZ3:35 pmToronto Pearson Intl

Mar 11

YYZ4:45 pmToronto Pearson Intl

9h 59m

1 stop

PDX11:44 pmPortland

$309

Alaska Airlines

Mar 7

PDX6:00 amPortland

6h 35m

1 stop

YYZ3:35 pmToronto Pearson Intl

Mar 13

YYZ4:45 pmToronto Pearson Intl

8h 56m

1 stop

PDX10:41 pmPortland

$315

Alaska Airlines

Mar 14

PDX6:00 amPortland

6h 35m

1 stop

YYZ3:35 pmToronto Pearson Intl

Mar 21

YYZ4:45 pmToronto Pearson Intl

9h 59m

1 stop

PDX11:44 pmPortland

$327

Fly from

Fly to

Route

Depart

Return

Price

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 3/24

11:59 pm-2:01 pm

1 stop11h 02m

Toronto Pearson Intl

Wed 3/25

4:10 pm-11:00 pm

1 stop9h 50m

$306

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 3/4

3:52 pm-3:35 pm

1 stop20h 43m

Toronto Pearson Intl

Wed 3/11

4:45 pm-11:44 pm

1 stop9h 59m

$309

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 3/7

6:00 am-3:35 pm

1 stop6h 35m

Toronto Pearson Intl

Fri 3/13

4:45 pm-10:41 pm

1 stop8h 56m

$315

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 2/2

7:05 pm-6:19 am

1 stop8h 14m

Toronto Pearson Intl

Thu 2/5

9:00 am-2:40 pm

1 stop8h 40m

$316

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 7/8

2:00 pm-5:50 am

2 stops12h 50m

Toronto Pearson Intl

Tue 7/14

8:00 am-1:20 pm

1 stop8h 20m

$317

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 3/7

3:15 pm-5:38 am

2 stops11h 23m

Toronto Pearson Intl

Sat 4/4

8:00 am-2:40 pm

1 stop9h 40m

$322

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Sat 5/23

2:00 pm-12:42 am

1 stop7h 42m

Montreal Pierre Elliott Trudeau Intl

Wed 5/27

6:45 am-1:20 pm

2 stops33h 35m

$379

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Wed 2/18

12:40 am-1:40 pm

1 stop10h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 2/25

2:40 pm-8:30 pm

1 stop8h 50m

$383

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Sat 2/28

10:39 am-3:58 pm

2 stops26h 19m

Toronto Island

Sat 3/7

1:30 pm-8:49 pm

1 stop10h 19m

$401

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Sat 2/28

10:39 am-10:35 am

1 stop20h 56m

Toronto Island

Sat 3/7

1:30 pm-8:49 pm

1 stop10h 19m

$402

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 $353. If you aren’t able to travel during the month of August, then book flights to Region of Ontario from Portland during October instead. Flights to Region of Ontario in October, while not as cheap as those in August, still average around $358.

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 $456 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 $294 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 50m
Direct flights	None

The fastest flight from Portland to Region of Ontario takes 6h 50m

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

Search flight deals

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 January 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.
What is the most popular plane model from Portland to Region of Ontario?
Based on momondo bookings for flights between Portland and Region of Ontario, the leading plane model is Airbus A319, making up 66.67% of the total bookings. Other popular models include Boeing 757-200 (winglets) with 33.33%.

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
Air Canada	PriceFrom $140	Free Cancellation	Rating 7.1 10,628 reviews	Search Air Canada flights
United Airlines	PriceFrom $148	Free Cancellation	Rating 7.4 9,167 reviews	Search United Airlines flights
Delta	PriceFrom $151	Free Cancellation	Rating 7.9 8,066 reviews	Search Delta flights
WestJet	PriceFrom $173	Free Cancellation	Rating 7.2 3,244 reviews	Search WestJet flights
American Airlines	PriceFrom $321	Free Cancellation	Rating 7.2 11,152 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $368	Free Cancellation	Rating 7.9 11,730 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.