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Cheap flights from Ontario to Portland from $181

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 3/6. 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
0 bags

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Find the cheapest flights from Ontario to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:48 pm - 11:20 pm
YOW
-
PWM
5h 32m
1 stop
United Airlines Logo
11:30 am - 4:30 pm
PWM
-
YOW
5h 00m
1 stop
$304United Airlines
seg, mar 2 - ter, mar 10
United Airlines Logo
2:05 pm - 11:20 pm
YOW
-
PWM
9h 15m
2 stops
United Airlines Logo
3:44 pm - 9:56 pm
PWM
-
YOW
6h 12m
1 stop
$368United Airlines
ter, mar 3 - qua, mar 11
Air Canada Logo
7:15 am - 11:20 pm
YOW
-
PWM
16h 05m
2 stops
Air Canada Logo
3:44 pm - 9:56 pm
PWM
-
YOW
6h 12m
1 stop
$374Air Canada
seg, mar 2 - qua, mar 11
Air Canada Logo
6:00 am - 11:20 pm
YOW
-
PWM
17h 20m
2 stops
Air Canada Logo
11:30 am - 9:18 pm
PWM
-
YOW
9h 48m
2 stops
$387Air Canada
seg, mar 2 - ter, mar 10
American Airlines Logo
6:00 am - 5:07 pm
YYZ
-
PWM
11h 07m
1 stop
American Airlines Logo
5:40 pm - 10:59 am
PWM
-
YYZ
17h 19m
1 stop
$408American Airlines
ter, fev 17 - ter, fev 24
American Airlines Logo
1:55 pm - 11:50 pm
YYZ
-
PWM
9h 55m
2 stops
American Airlines Logo
6:00 am - 4:41 pm
PWM
-
YYZ
10h 41m
1 stop
$488American Airlines
ter, fev 17 - ter, fev 24
Multiple Airlines Logo
1:10 pm - 11:20 pm
YUL
-
PWM
10h 10m
1 stop
Multiple Airlines Logo
6:00 am - 3:56 pm
PWM
-
YUL
9h 56m
2 stops
$529Multiple Airlines
sáb, fev 14 - sáb, fev 21
Multiple Airlines Logo
1:10 pm - 10:18 pm
YUL
-
PWM
9h 08m
1 stop
Multiple Airlines Logo
6:00 am - 1:28 pm
PWM
-
YUL
7h 28m
1 stop
$534Multiple Airlines
sex, mar 6 - sex, mar 13
Delta Logo
6:06 am - 11:20 am
YYZ
-
PWM
5h 14m
1 stop
Delta Logo
2:35 pm - 10:56 pm
PWM
-
YYZ
8h 21m
1 stop
$542Delta
qui, jan 29 - seg, fev 2
Delta Logo
7:45 am - 12:03 pm
YYZ
-
PWM
4h 18m
1 stop
Delta Logo
5:59 pm - 10:51 pm
PWM
-
YYZ
4h 52m
1 stop
$544Delta
qui, jan 29 - seg, fev 2

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
Feb 17
YYZ6:00 amToronto Pearson Intl
11h 07m
1 stop
PWM5:07 pmPortland
Feb 24
PWM5:40 pmPortland
17h 19m
1 stop
YYZ10:59 amToronto Pearson Intl
$408
American Airlines
Feb 17
YYZ1:55 pmToronto Pearson Intl
9h 55m
2 stops
PWM11:50 pmPortland
Feb 24
PWM6:00 amPortland
10h 41m
1 stop
YYZ4:41 pmToronto Pearson Intl
$488
American Airlines
Mar 6
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
16h 20m
2 stops
PWM11:50 pmPortland
Mar 13
PWM6:00 amPortland
16h 56m
2 stops
YUL10:56 pmMontreal Pierre Elliott Trudeau Intl
$505

Delta flights from Region of Ontario to Portland, Maine

Our best Delta deals on Region of Ontario to Portland, Maine flight tickets
Delta
Apr 2
YUL2:29 pmMontreal Pierre Elliott Trudeau Intl
8h 43m
1 stop
PWM11:12 pmPortland
Apr 7
PWM6:03 amPortland
26h 27m
1 stop
YUL8:30 amMontreal Pierre Elliott Trudeau Intl
$476
Delta
Jan 29
YYZ6:06 amToronto Pearson Intl
5h 14m
1 stop
PWM11:20 amPortland
Feb 2
PWM2:35 pmPortland
8h 21m
1 stop
YYZ10:56 pmToronto Pearson Intl
$542
Delta
Jan 29
YYZ7:45 amToronto Pearson Intl
4h 18m
1 stop
PWM12:03 pmPortland
Feb 2
PWM5:59 pmPortland
4h 52m
1 stop
YYZ10:51 pmToronto Pearson Intl
$544

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 janeiro 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

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

seg 3/2

5:48 pm-11:20 pm

1 stop5h 32m

Portland

ter 3/10

11:30 am-4:30 pm

1 stop5h 00m

$304

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

ter 3/3

2:05 pm-11:20 pm

2 stops9h 15m

Portland

qua 3/11

3:44 pm-9:56 pm

1 stop6h 12m

$368

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

seg 3/2

7:15 am-11:20 pm

2 stops16h 05m

Portland

qua 3/11

3:44 pm-9:56 pm

1 stop6h 12m

$374

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

seg 3/2

6:00 am-11:20 pm

2 stops17h 20m

Portland

ter 3/10

11:30 am-9:18 pm

2 stops9h 48m

$387

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

ter 2/17

6:00 am-5:07 pm

1 stop11h 07m

Portland

ter 2/24

5:40 pm-10:59 am

1 stop17h 19m

$408

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

ter 2/17

1:55 pm-11:50 pm

2 stops9h 55m

Portland

ter 2/24

6:00 am-4:41 pm

1 stop10h 41m

$488

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

sáb 2/14

1:10 pm-11:20 pm

1 stop10h 10m

Portland

sáb 2/21

6:00 am-3:56 pm

2 stops9h 56m

$529

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

sex 3/6

1:10 pm-10:18 pm

1 stop9h 08m

Portland

sex 3/13

6:00 am-1:28 pm

1 stop7h 28m

$534

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

qui 1/29

6:06 am-11:20 am

1 stop5h 14m

Portland

seg 2/2

2:35 pm-10:56 pm

1 stop8h 21m

$542

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

qui 1/29

7:45 am-12:03 pm

1 stop4h 18m

Portland

seg 2/2

5:59 pm-10:51 pm

1 stop4h 52m

$544

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 airline that flies from Ontario to Portland?

United Airlines, Delta, and WestJet are the most popular carriers operating from Ontario to Portland

What airlines fly to Portland, Maine?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Portland, Maine from Region of Ontario according to our data. Air Canada is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 3 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

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

3h 52m

Direct flights

None
The fastest flight from Region of Ontario to Portland, Maine takes 3h 52m
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

  • 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
Conway
Freeport
Lewiston
Brunswick
Bartlett
Gorham
Auburn
Windham
Intervale
Oxford
Bath
Georgetown
Falmouth
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.

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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1 adult
sex 2/20
sex 2/27
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