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Cheap flights from Ontario to Portland from $213

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 8/18. 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

Find the cheapest flights from Ontario to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:43 pm - 11:51 pm
YYZ
-
PWM
4h 08m
1 stop
United Airlines Logo
5:15 am - 10:04 am
PWM
-
YYZ
4h 49m
1 stop
$392United Airlines
Mon, Jul 20 - Mon, Jul 27
United Airlines Logo
8:45 am - 2:31 pm
YYZ
-
PWM
5h 46m
1 stop
United Airlines Logo
6:00 am - 7:37 pm
PWM
-
YYZ
13h 37m
1 stop
$395United Airlines
Sat, Jul 4 - Fri, Jul 10
United Airlines Logo
2:45 pm - 9:41 pm
YYZ
-
PWM
6h 56m
1 stop
United Airlines Logo
6:00 am - 11:49 am
PWM
-
YYZ
5h 49m
1 stop
$396United Airlines
Thu, Jul 2 - Wed, Jul 8
American Airlines Logo
7:29 am - 12:40 pm
YYZ
-
PWM
5h 11m
1 stop
American Airlines Logo
6:46 pm - 11:46 pm
PWM
-
YYZ
5h 00m
1 stop
$398American Airlines
Sun, Aug 23 - Fri, Aug 28
United Airlines Logo
7:43 pm - 11:51 pm
YYZ
-
PWM
4h 08m
1 stop
United Airlines Logo
6:00 am - 11:49 am
PWM
-
YYZ
5h 49m
1 stop
$425United Airlines
Wed, Jul 15 - Wed, Jul 22
American Airlines Logo
4:18 pm - 10:31 am
YYZ
-
PWM
18h 13m
1 stop
American Airlines Logo
6:59 pm - 11:50 pm
PWM
-
YYZ
4h 51m
1 stop
$431American Airlines
Sat, Jul 4 - Fri, Jul 10
Delta Logo
6:10 pm - 11:49 pm
YYZ
-
PWM
5h 39m
1 stop
Delta Logo
5:59 pm - 9:31 am
PWM
-
YYZ
15h 32m
1 stop
$436Delta
Tue, Dec 8 - Fri, Dec 11
Delta Logo
6:15 am - 11:01 am
YYZ
-
PWM
4h 46m
1 stop
Delta Logo
8:00 am - 1:39 pm
PWM
-
YYZ
5h 39m
1 stop
$437Delta
Tue, Dec 8 - Fri, Dec 11
Air Canada Logo
6:00 pm - 10:57 pm
YOW
-
PWM
4h 57m
1 stop
Air Canada Logo
6:00 am - 3:57 pm
PWM
-
YOW
9h 57m
2 stops
$564Air Canada
Sat, Oct 31 - Wed, Nov 4
Air Canada Logo
8:50 am - 6:13 pm
YOW
-
PWM
9h 23m
2 stops
Air Canada Logo
6:00 am - 2:12 pm
PWM
-
YOW
8h 12m
2 stops
$567Air Canada
Sat, Oct 31 - Wed, Nov 4

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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
Jul 20
YYZ7:43 pmToronto Pearson Intl
4h 08m
1 stop
PWM11:51 pmPortland
Jul 27
PWM5:15 amPortland
4h 49m
1 stop
YYZ10:04 amToronto Pearson Intl
$392
United Airlines
Jul 4
YYZ8:45 amToronto Pearson Intl
5h 46m
1 stop
PWM2:31 pmPortland
Jul 10
PWM6:00 amPortland
13h 37m
1 stop
YYZ7:37 pmToronto Pearson Intl
$395
United Airlines
Jul 2
YYZ2:45 pmToronto Pearson Intl
6h 56m
1 stop
PWM9:41 pmPortland
Jul 8
PWM6:00 amPortland
5h 49m
1 stop
YYZ11:49 amToronto Pearson Intl
$396

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
Aug 23
YYZ7:29 amToronto Pearson Intl
5h 11m
1 stop
PWM12:40 pmPortland
Aug 28
PWM6:46 pmPortland
5h 00m
1 stop
YYZ11:46 pmToronto Pearson Intl
$398
American Airlines
Jul 4
YYZ4:18 pmToronto Pearson Intl
18h 13m
1 stop
PWM10:31 amPortland
Jul 10
PWM6:59 pmPortland
4h 51m
1 stop
YYZ11:50 pmToronto Pearson Intl
$431
American Airlines
Jul 15
YYZ12:39 pmToronto Pearson Intl
9h 54m
1 stop
PWM10:33 pmPortland
Jul 22
PWM1:25 pmPortland
5h 20m
1 stop
YYZ6:45 pmToronto Pearson Intl
$434

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 832,500 searches. Data last updated June 21, 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
Quickest round-trip

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 7/20

7:43 pm-11:51 pm

1 stop4h 08m

Portland

Mon 7/27

5:15 am-10:04 am

1 stop4h 49m

$392

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 7/4

8:45 am-2:31 pm

1 stop5h 46m

Portland

Fri 7/10

6:00 am-7:37 pm

1 stop13h 37m

$395

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Thu 7/2

2:45 pm-9:41 pm

1 stop6h 56m

Portland

Wed 7/8

6:00 am-11:49 am

1 stop5h 49m

$396

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sun 8/23

7:29 am-12:40 pm

1 stop5h 11m

Portland

Fri 8/28

6:46 pm-11:46 pm

1 stop5h 00m

$398

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 7/15

7:43 pm-11:51 pm

1 stop4h 08m

Portland

Wed 7/22

6:00 am-11:49 am

1 stop5h 49m

$425

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 7/4

4:18 pm-10:31 am

1 stop18h 13m

Portland

Fri 7/10

6:59 pm-11:50 pm

1 stop4h 51m

$431

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 12/8

6:10 pm-11:49 pm

1 stop5h 39m

Portland

Fri 12/11

5:59 pm-9:31 am

1 stop15h 32m

$436

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 12/8

6:15 am-11:01 am

1 stop4h 46m

Portland

Fri 12/11

8:00 am-1:39 pm

1 stop5h 39m

$437

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Sat 10/31

6:00 pm-10:57 pm

1 stop4h 57m

Portland

Wed 11/4

6:00 am-3:57 pm

2 stops9h 57m

$564

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Sat 10/31

8:50 am-6:13 pm

2 stops9h 23m

Portland

Wed 11/4

6:00 am-2:12 pm

2 stops8h 12m

$567

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?

The cheapest month to fly to Portland, Maine from Region of Ontario is in December. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. 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 $0.

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

You could potentially save up to 60% 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 were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 required travel and health documents for your Portland Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Lewiston
Brunswick
Freeport
Conway
Bartlett
Gorham
Auburn
Windham
Intervale
Bath
Oxford
Falmouth
Georgetown
Tamworth

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portland from Ontario.

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

Yes. momondo enables you to select and highlight flights to Portland from Ontario with this policy.

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

momondo helps you find the best flight between Ontario and Portland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Portland from Ontario. 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.

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