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Cheap flights from Ontario to Portland from C$ 299

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Portland departing on 18/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:45 p.m. - 9:41 p.m.
YYZ
-
PWM
6h 56m
1 stop
United Airlines Logo
6:00 a.m. - 11:49 a.m.
PWM
-
YYZ
5h 49m
1 stop
C$ 556United Airlines
Thu, 2 Jul - Wed, 8 Jul
United Airlines Logo
8:45 a.m. - 2:31 p.m.
YYZ
-
PWM
5h 46m
1 stop
United Airlines Logo
6:00 a.m. - 11:49 a.m.
PWM
-
YYZ
5h 49m
1 stop
C$ 558United Airlines
Sat, 4 Jul - Fri, 10 Jul
American Airlines Logo
6:08 p.m. - 11:41 p.m.
YYZ
-
PWM
5h 33m
1 stop
American Airlines Logo
6:46 p.m. - 10:17 a.m.
PWM
-
YYZ
15h 31m
1 stop
C$ 560American Airlines
Thu, 13 Aug - Sat, 15 Aug
Delta Logo
12:05 p.m. - 7:29 p.m.
YYZ
-
PWM
7h 24m
1 stop
Delta Logo
5:59 p.m. - 9:31 a.m.
PWM
-
YYZ
15h 32m
1 stop
C$ 579Delta
Tue, 8 Dec - Fri, 11 Dec
United Airlines Logo
7:43 p.m. - 11:51 p.m.
YYZ
-
PWM
4h 08m
1 stop
United Airlines Logo
6:00 a.m. - 11:49 a.m.
PWM
-
YYZ
5h 49m
1 stop
C$ 596United Airlines
Wed, 15 Jul - Wed, 22 Jul
United Airlines Logo
2:30 p.m. - 7:27 p.m.
YYZ
-
PWM
4h 57m
1 stop
United Airlines Logo
6:00 a.m. - 11:49 a.m.
PWM
-
YYZ
5h 49m
1 stop
C$ 598United Airlines
Tue, 14 Jul - Tue, 21 Jul
American Airlines Logo
4:18 p.m. - 10:31 a.m.
YYZ
-
PWM
18h 13m
1 stop
American Airlines Logo
6:59 p.m. - 11:50 p.m.
PWM
-
YYZ
4h 51m
1 stop
C$ 605American Airlines
Sat, 4 Jul - Fri, 10 Jul
American Airlines Logo
12:39 p.m. - 10:33 p.m.
YYZ
-
PWM
9h 54m
1 stop
American Airlines Logo
1:25 p.m. - 6:45 p.m.
PWM
-
YYZ
5h 20m
1 stop
C$ 609American Airlines
Wed, 15 Jul - Wed, 22 Jul
Delta Logo
6:10 p.m. - 11:49 p.m.
YYZ
-
PWM
5h 39m
1 stop
Delta Logo
5:59 p.m. - 9:31 a.m.
PWM
-
YYZ
15h 32m
1 stop
C$ 612Delta
Tue, 8 Dec - Fri, 11 Dec
Delta Logo
12:05 p.m. - 7:29 p.m.
YYZ
-
PWM
7h 24m
1 stop
Delta Logo
6:00 a.m. - 1:39 p.m.
PWM
-
YYZ
7h 39m
1 stop
C$ 614Delta
Sun, 6 Dec - Thu, 10 Dec

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United Airlines flights from Region of Ontario to Portland, Maine

Our best United Airlines deals on Region of Ontario to Portland, Maine flight tickets
United Airlines
2 Jul
YYZ2:45 p.m.Toronto Pearson Intl
6h 56m
1 stop
PWM9:41 p.m.Portland
8 Jul
PWM6:00 a.m.Portland
5h 49m
1 stop
YYZ11:49 a.m.Toronto Pearson Intl
C$ 556
United Airlines
4 Jul
YYZ8:45 a.m.Toronto Pearson Intl
5h 46m
1 stop
PWM2:31 p.m.Portland
10 Jul
PWM6:00 a.m.Portland
5h 49m
1 stop
YYZ11:49 a.m.Toronto Pearson Intl
C$ 558
United Airlines
24 Aug
YYZ2:45 p.m.Toronto Pearson Intl
6h 38m
1 stop
PWM9:23 p.m.Portland
28 Aug
PWM5:03 p.m.Portland
7h 10m
1 stop
YYZ12:13 a.m.Toronto Pearson Intl
C$ 560

American Airlines flights from Region of Ontario to Portland, Maine

Our best American Airlines deals on Region of Ontario to Portland, Maine flight tickets
American Airlines
4 Jul
YYZ4:18 p.m.Toronto Pearson Intl
18h 13m
1 stop
PWM10:31 a.m.Portland
10 Jul
PWM6:59 p.m.Portland
4h 51m
1 stop
YYZ11:50 p.m.Toronto Pearson Intl
C$ 605
American Airlines
15 Jul
YYZ12:39 p.m.Toronto Pearson Intl
9h 54m
1 stop
PWM10:33 p.m.Portland
22 Jul
PWM1:25 p.m.Portland
5h 20m
1 stop
YYZ6:45 p.m.Toronto Pearson Intl
C$ 609
American Airlines
2 Oct
YYZ10:57 a.m.Toronto Pearson Intl
4h 54m
1 stop
PWM3:51 p.m.Portland
4 Oct
PWM4:31 p.m.Portland
6h 29m
1 stop
YYZ11:00 p.m.Toronto Pearson Intl
C$ 650

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Portland, Maine 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 18 June 2026.
Use the filters below to find and compare flights from Ontario to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Thu 2/7

2:45 p.m.-9:41 p.m.

1 stop6h 56m

Portland

Wed 8/7

6:00 a.m.-11:49 a.m.

1 stop5h 49m

C$ 556

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 4/7

8:45 a.m.-2:31 p.m.

1 stop5h 46m

Portland

Fri 10/7

6:00 a.m.-11:49 a.m.

1 stop5h 49m

C$ 558

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Thu 13/8

6:08 p.m.-11:41 p.m.

1 stop5h 33m

Portland

Sat 15/8

6:46 p.m.-10:17 a.m.

1 stop15h 31m

C$ 560

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 8/12

12:05 p.m.-7:29 p.m.

1 stop7h 24m

Portland

Fri 11/12

5:59 p.m.-9:31 a.m.

1 stop15h 32m

C$ 579
Quickest round-trip

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 15/7

7:43 p.m.-11:51 p.m.

1 stop4h 08m

Portland

Wed 22/7

6:00 a.m.-11:49 a.m.

1 stop5h 49m

C$ 596

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 14/7

2:30 p.m.-7:27 p.m.

1 stop4h 57m

Portland

Tue 21/7

6:00 a.m.-11:49 a.m.

1 stop5h 49m

C$ 598

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 4/7

4:18 p.m.-10:31 a.m.

1 stop18h 13m

Portland

Fri 10/7

6:59 p.m.-11:50 p.m.

1 stop4h 51m

C$ 605

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 15/7

12:39 p.m.-10:33 p.m.

1 stop9h 54m

Portland

Wed 22/7

1:25 p.m.-6:45 p.m.

1 stop5h 20m

C$ 609

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 8/12

6:10 p.m.-11:49 p.m.

1 stop5h 39m

Portland

Fri 11/12

5:59 p.m.-9:31 a.m.

1 stop15h 32m

C$ 612

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sun 6/12

12:05 p.m.-7:29 p.m.

1 stop7h 24m

Portland

Thu 10/12

6:00 a.m.-1:39 p.m.

1 stop7h 39m

C$ 614

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

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

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 Portland, Maine?

In general, December is the cheapest month to fly from Region of Ontario to Portland, Maine. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 0. If you aren’t able to travel to Portland, Maine during the month of December, then flying in May is also cheap. Prices for this month can be found on momondo for an average of C$ 0.

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

You could potentially save up to 4% on your flight if you consider stops on a Region of Ontario to Portland, Maine flight.

Cheap Region of Ontario to Portland, Maine flight deals and tips

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

Fastest flight time

4h 08m

Direct flights

None
The fastest flight from Region of Ontario to Portland, Maine takes 4h 08m
There are no direct flights from Region of Ontario to Portland, Maine. There are no popular flight routes from Region of Ontario to Portland, Maine.
Search flight deals

Frequently asked questions about flying from Ontario to Portland, Maine

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

    Prices for flights from Ontario to Portland Airport refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents you'll need for your trip to Portland Airport 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 Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Region of Ontario to Portland, Maine

Compare and see reviews for airlines that fly from Region of Ontario to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 567Free CancellationRating
7.4
9,859 reviews
Search United Airlines flights

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Freeport
North Conway
Brunswick
Bartlett
Boothbay Harbor
Gorham
Lewiston
Jackson

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Portland for you.

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

All flight searches from Ontario to Portland on momondo can be filtered to show those which offer flexible booking policies.

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

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

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

If you are simply researching potential flights to Portland, momondo offers a useful price alert feature which will track prices for flights to Portland from Ontario and alert you when they change.

An easier way to manage your Portland, Maine trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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