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Cheap flights from Portland to Ontario from C$ 151

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 21/10. 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

Air Canada Logo
6:15 a.m. - 11:19 p.m.PDX-YUL
14h 04m2 stops
Air Canada Logo
7:30 a.m. - 2:46 p.m.YUL-PDX
10h 16m1 stop
C$ 366Air Canada
Find Deal
Thu, 16 Oct - Wed, 22 Oct
Air Canada Logo
3:25 p.m. - 7:10 a.m.PDX-YUL
12h 45m2 stops
Air Canada Logo
8:00 a.m. - 6:46 p.m.YUL-PDX
13h 46m2 stops
C$ 385Air Canada
Find Deal
Thu, 16 Oct - Wed, 22 Oct
United Airlines Logo
11:59 p.m. - 9:58 a.m.PDX-YYZ
6h 59m1 stop
United Airlines Logo
11:00 a.m. - 12:28 a.m.YYZ-PDX
16h 28m2 stops
C$ 413United Airlines
Find Deal
Sat, 18 Oct - Fri, 24 Oct
United Airlines Logo
3:54 p.m. - 7:30 a.m.PDX-YYZ
12h 36m1 stop
United Airlines Logo
6:45 p.m. - 12:26 a.m.YYZ-PDX
8h 41m1 stop
C$ 421United Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Multiple Airlines Logo
1:45 p.m. - 12:22 a.m.PDX-YYZ
7h 37m1 stop
Multiple Airlines Logo
2:00 p.m. - 9:41 a.m.YYZ-PDX
22h 41m2 stops
C$ 426Multiple Airlines
Find Deal
Sat, 4 Oct - Tue, 7 Oct
Multiple Airlines Logo
5:55 p.m. - 7:58 p.m.PDX-YYZ
23h 03m1 stop
Multiple Airlines Logo
9:45 a.m. - 9:41 a.m.YYZ-PDX
26h 56m1 stop
C$ 433Multiple Airlines
Find Deal
Wed, 15 Oct - Wed, 22 Oct
WestJet Logo
1:45 p.m. - 12:31 a.m.PDX-YYZ
31h 46m2 stops
WestJet Logo
8:00 a.m. - 1:05 p.m.YYZ-PDX
8h 05m1 stop
C$ 439WestJet
Find Deal
Sat, 27 Sep - Sat, 4 Oct
American Airlines Logo
9:56 p.m. - 1:40 p.m.PDX-YUL
12h 44m1 stop
American Airlines Logo
5:15 p.m. - 12:05 a.m.YUL-PDX
9h 50m1 stop
C$ 446American Airlines
Find Deal
Mon, 29 Sep - Wed, 1 Oct
American Airlines Logo
5:34 a.m. - 10:45 p.m.PDX-YYZ
14h 11m1 stop
American Airlines Logo
6:49 a.m. - 7:14 p.m.YYZ-PDX
15h 25m1 stop
C$ 462American Airlines
Find Deal
Wed, 22 Oct - Mon, 27 Oct
WestJet Logo
12:40 a.m. - 12:40 a.m.PDX-YOW
45h 00m2 stops
WestJet Logo
6:00 a.m. - 10:40 p.m.YOW-PDX
19h 40m2 stops
C$ 1,182WestJet
Find Deal
Wed, 15 Oct - Mon, 20 Oct

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 Oct
PDX11:59 p.m.Portland
6h 59m
1 stop
YYZ9:58 a.m.Toronto Pearson Intl
24 Oct
YYZ11:00 a.m.Toronto Pearson Intl
16h 28m
2 stops
PDX12:28 a.m.Portland
C$ 413
Find similar
United Airlines
30 Oct
PDX3:54 p.m.Portland
12h 36m
1 stop
YYZ7:30 a.m.Toronto Pearson Intl
6 Nov
YYZ6:45 p.m.Toronto Pearson Intl
8h 41m
1 stop
PDX12:26 a.m.Portland
C$ 421
Find similar
United Airlines
25 Oct
PDX5:00 a.m.Portland
7h 11m
1 stop
YYZ3:11 p.m.Toronto Pearson Intl
25 Oct
YYZ5:15 p.m.Toronto Pearson Intl
8h 15m
1 stop
PDX10:30 p.m.Portland
C$ 424
Find similar

WestJet flights from Portland to Region of Ontario

Our best WestJet deals on Portland to Region of Ontario flight tickets
WestJet
27 Sep
PDX1:45 p.m.Portland
31h 46m
2 stops
YYZ12:31 a.m.Toronto Pearson Intl
4 Oct
YYZ8:00 a.m.Toronto Pearson Intl
8h 05m
1 stop
PDX1:05 p.m.Portland
C$ 439
Find similar
WestJet
27 Sep
PDX1:45 p.m.Portland
31h 42m
2 stops
YUL12:27 a.m.Montreal Pierre Elliott Trudeau Intl
5 Oct
YUL6:20 a.m.Montreal Pierre Elliott Trudeau Intl
7h 19m
1 stop
PDX10:39 a.m.Portland
C$ 754
Find similar
WestJet
26 Sep
PDX12:45 a.m.Portland
19h 33m
1 stop
YUL11:18 p.m.Montreal Pierre Elliott Trudeau Intl
4 Oct
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
33h 20m
2 stops
PDX1:05 p.m.Portland
C$ 929
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 17 September 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

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Thu 16/10

6:15 a.m.-11:19 p.m.

2 stops14h 04m

Montreal Pierre Elliott Trudeau Intl

Wed 22/10

7:30 a.m.-2:46 p.m.

1 stop10h 16m

C$ 366

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Thu 16/10

3:25 p.m.-7:10 a.m.

2 stops12h 45m

Montreal Pierre Elliott Trudeau Intl

Wed 22/10

8:00 a.m.-6:46 p.m.

2 stops13h 46m

C$ 385

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 18/10

11:59 p.m.-9:58 a.m.

1 stop6h 59m

Toronto Pearson Intl

Fri 24/10

11:00 a.m.-12:28 a.m.

2 stops16h 28m

C$ 413

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 30/10

3:54 p.m.-7:30 a.m.

1 stop12h 36m

Toronto Pearson Intl

Thu 6/11

6:45 p.m.-12:26 a.m.

1 stop8h 41m

C$ 421

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 4/10

1:45 p.m.-12:22 a.m.

1 stop7h 37m

Toronto Pearson Intl

Tue 7/10

2:00 p.m.-9:41 a.m.

2 stops22h 41m

C$ 426

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 15/10

5:55 p.m.-7:58 p.m.

1 stop23h 03m

Toronto Pearson Intl

Wed 22/10

9:45 a.m.-9:41 a.m.

1 stop26h 56m

C$ 433

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 27/9

1:45 p.m.-12:31 a.m.

2 stops31h 46m

Toronto Pearson Intl

Sat 4/10

8:00 a.m.-1:05 p.m.

1 stop8h 05m

C$ 439

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Mon 29/9

9:56 p.m.-1:40 p.m.

1 stop12h 44m

Montreal Pierre Elliott Trudeau Intl

Wed 1/10

5:15 p.m.-12:05 a.m.

1 stop9h 50m

C$ 446

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 22/10

5:34 a.m.-10:45 p.m.

1 stop14h 11m

Toronto Pearson Intl

Mon 27/10

6:49 a.m.-7:14 p.m.

1 stop15h 25m

C$ 462

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Wed 15/10

12:40 a.m.-12:40 a.m.

2 stops45h 00m

Ottawa

Mon 20/10

6:00 a.m.-10:40 p.m.

2 stops19h 40m

C$ 1,182

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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$ 492. If you are unable to visit Region of Ontario during the month of August, then departing from Portland during the month January is also very affordable. Most momondo users find prices during this month for around C$ 531.

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$ 161. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 432 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.

What is the cheapest Portland to Ontario flight route?

Fly from Portland to Toronto Pearson Intl for the best Portland - Ontario flight prices

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$ 635 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$ 395 on momondo.

What cabin class options are available on Portland to Ontario flights?

There are 2 cabin classes available to choose from on Portland to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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.
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  • 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$ 322Free CancellationRating
7.2
3,095 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 473Free CancellationRating
7.1
10,000 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.

An easier way to manage your Region of Ontario trip

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