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Cheap flights from Portland to Ontario from C$ 182

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Ontario departing on 22/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Portland to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 a.m. - 4:52 p.m.PDX-YYZ
7h 52m1 stop
United Airlines Logo
7:40 p.m. - 12:13 p.m.YYZ-PDX
19h 33m2 stops
C$ 451United Airlines
Find Deal
Tue, 18 Nov - Tue, 18 Nov
Air Canada Logo
3:15 p.m. - 6:08 a.m.PDX-YYZ
11h 53m2 stops
Air Canada Logo
8:00 a.m. - 2:40 p.m.YYZ-PDX
9h 40m2 stops
C$ 457Air Canada
Find Deal
Fri, 5 Dec - Sun, 7 Dec
Air Canada Logo
7:00 p.m. - 6:19 a.m.PDX-YYZ
8h 19m1 stop
Air Canada Logo
12:00 p.m. - 6:30 p.m.YYZ-PDX
9h 30m2 stops
C$ 464Air Canada
Find Deal
Fri, 16 Jan - Tue, 20 Jan
Multiple Airlines Logo
7:00 a.m. - 7:45 p.m.PDX-YYZ
9h 45m1 stop
Multiple Airlines Logo
8:00 a.m. - 2:40 p.m.YYZ-PDX
9h 40m1 stop
C$ 481Multiple Airlines
Find Deal
Fri, 20 Feb - Wed, 18 Mar
Multiple Airlines Logo
6:00 a.m. - 3:35 p.m.PDX-YYZ
6h 35m1 stop
Multiple Airlines Logo
9:35 a.m. - 7:25 p.m.YYZ-PDX
12h 50m1 stop
C$ 485Multiple Airlines
Find Deal
Mon, 23 Feb - Sat, 28 Mar
Delta Logo
12:19 p.m. - 11:21 p.m.PDX-YYZ
8h 02m1 stop
Delta Logo
6:10 p.m. - 8:31 a.m.YYZ-PDX
17h 21m2 stops
C$ 510Delta
Find Deal
Wed, 19 Nov - Tue, 25 Nov
Delta Logo
10:10 p.m. - 1:30 p.m.PDX-YUL
12h 20m1 stop
Delta Logo
12:45 p.m. - 10:21 p.m.YUL-PDX
12h 36m1 stop
C$ 537Delta
Find Deal
Fri, 14 Nov - Fri, 21 Nov
American Airlines Logo
10:15 p.m. - 1:45 p.m.PDX-YUL
12h 30m1 stop
American Airlines Logo
7:00 a.m. - 8:27 p.m.YUL-PDX
16h 27m2 stops
C$ 646American Airlines
Find Deal
Mon, 19 Jan - Fri, 23 Jan
American Airlines Logo
6:01 a.m. - 10:44 p.m.PDX-YUL
13h 43m2 stops
American Airlines Logo
7:00 a.m. - 8:27 p.m.YUL-PDX
16h 27m2 stops
C$ 653American Airlines
Find Deal
Mon, 19 Jan - Fri, 23 Jan
WestJet Logo
6:00 a.m. - 12:42 a.m.PDX-YOW
15h 42m2 stops
WestJet Logo
5:45 p.m. - 7:19 p.m.YOW-PDX
28h 34m2 stops
C$ 1,244WestJet
Find Deal
Thu, 13 Nov - Mon, 17 Nov

United Airlines flights from Portland to Region of Ontario

Our best United Airlines deals on Portland to Region of Ontario flight tickets
United Airlines
18 Nov
PDX6:00 a.m.Portland
7h 52m
1 stop
YYZ4:52 p.m.Toronto Pearson Intl
18 Nov
YYZ7:40 p.m.Toronto Pearson Intl
19h 33m
2 stops
PDX12:13 p.m.Portland
C$ 451
Find similar
United Airlines
3 Mar
PDX11:59 p.m.Portland
6h 59m
1 stop
YYZ9:58 a.m.Toronto Pearson Intl
4 Mar
YYZ12:45 p.m.Toronto Pearson Intl
10h 58m
1 stop
PDX8:43 p.m.Portland
C$ 468
Find similar
United Airlines
15 Nov
PDX3:54 p.m.Portland
12h 36m
1 stop
YYZ7:30 a.m.Toronto Pearson Intl
17 Nov
YYZ2:57 p.m.Toronto Pearson Intl
10h 08m
1 stop
PDX10:05 p.m.Portland
C$ 478
Find similar

Air Canada flights from Portland to Region of Ontario

Our best Air Canada deals on Portland to Region of Ontario flight tickets
Air Canada
5 Dec
PDX3:15 p.m.Portland
11h 53m
2 stops
YYZ6:08 a.m.Toronto Pearson Intl
7 Dec
YYZ8:00 a.m.Toronto Pearson Intl
9h 40m
2 stops
PDX2:40 p.m.Portland
C$ 457
Find similar
Air Canada
16 Jan
PDX7:00 p.m.Portland
8h 19m
1 stop
YYZ6:19 a.m.Toronto Pearson Intl
20 Jan
YYZ12:00 p.m.Toronto Pearson Intl
9h 30m
2 stops
PDX6:30 p.m.Portland
C$ 464
Find similar
Air Canada
26 Nov
PDX9:50 a.m.Portland
11h 23m
2 stops
YYZ12:13 a.m.Toronto Pearson Intl
3 Dec
YYZ12:00 p.m.Toronto Pearson Intl
9h 30m
2 stops
PDX6:30 p.m.Portland
C$ 471
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Region of Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 3 November 2025.
Use the filters below to find and compare flights from Portland to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 18/11

6:00 a.m.-4:52 p.m.

1 stop7h 52m

Toronto Pearson Intl

Tue 18/11

7:40 p.m.-12:13 p.m.

2 stops19h 33m

C$ 451

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 5/12

3:15 p.m.-6:08 a.m.

2 stops11h 53m

Toronto Pearson Intl

Sun 7/12

8:00 a.m.-2:40 p.m.

2 stops9h 40m

C$ 457

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 16/1

7:00 p.m.-6:19 a.m.

1 stop8h 19m

Toronto Pearson Intl

Tue 20/1

12:00 p.m.-6:30 p.m.

2 stops9h 30m

C$ 464

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 20/2

7:00 a.m.-7:45 p.m.

1 stop9h 45m

Toronto Pearson Intl

Wed 18/3

8:00 a.m.-2:40 p.m.

1 stop9h 40m

C$ 481

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 23/2

6:00 a.m.-3:35 p.m.

1 stop6h 35m

Toronto Pearson Intl

Sat 28/3

9:35 a.m.-7:25 p.m.

1 stop12h 50m

C$ 485

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 19/11

12:19 p.m.-11:21 p.m.

1 stop8h 02m

Toronto Pearson Intl

Tue 25/11

6:10 p.m.-8:31 a.m.

2 stops17h 21m

C$ 510

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Fri 14/11

10:10 p.m.-1:30 p.m.

1 stop12h 20m

Montreal Pierre Elliott Trudeau Intl

Fri 21/11

12:45 p.m.-10:21 p.m.

1 stop12h 36m

C$ 537

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Mon 19/1

10:15 p.m.-1:45 p.m.

1 stop12h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 23/1

7:00 a.m.-8:27 p.m.

2 stops16h 27m

C$ 646

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Mon 19/1

6:01 a.m.-10:44 p.m.

2 stops13h 43m

Montreal Pierre Elliott Trudeau Intl

Fri 23/1

7:00 a.m.-8:27 p.m.

2 stops16h 27m

C$ 653

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Thu 13/11

6:00 a.m.-12:42 a.m.

2 stops15h 42m

Ottawa

Mon 17/11

5:45 p.m.-7:19 p.m.

2 stops28h 34m

C$ 1,244

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Ontario from

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

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

In general, August is the cheapest month to fly from Portland to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 502. If you are unable to visit Region of Ontario during the month of August, then departing from Portland during the month October is also very affordable. Most momondo users find prices during this month for around C$ 503.

What is the cheapest time of day to depart on your flight to Region of Ontario?

Our most recent data shows that the best time of day to fly to Region of Ontario is in the evening. Flights from Portland to Region of Ontario during this time can be as low as C$ 164. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 439 on average. Flights to Region of Ontario from Portland at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 C$ 647 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 C$ 402 on momondo.

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

You could potentially save up to 29% 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

Direct flights

None
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 are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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?

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
WestJetPriceFrom C$ 328Free CancellationRating
7.2
3,153 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 481Free CancellationRating
7.1
10,398 reviews
Search Air Canada flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Ontario. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Ontario from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Portland to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Portland to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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