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$96+ Cheap flights from Maine to Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — YYZ
mai 18 — mai 251
E 5/18
E 5/25
1 adult, Economy
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Cheap flight deals from Maine to Ontario

Cheapest flights from Maine to Ontario
Explore the most affordable flight options available from Maine to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on aprill 18, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
N 5/77:10 am
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
P 5/109:00 am
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/18$222
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
L 5/27:10 am
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
E 5/43:05 pm
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/18$223
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
N 5/78:30 pm
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
K 5/136:05 pm
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/17$225
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
R 5/88:30 pm
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
E 5/116:05 pm
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/18$226
This Trip.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
L 5/25:30 pm
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
T 5/53:05 pm
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/18$229
This Gotogate deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
L 5/305:50 am
BOS
-
YTZ
2 stops7h 27m
Air Canada
L 6/68:20 am
YTZ
-
BOS
2 stops6h 27m
Air Canada
Deal found 4/14$230
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
N 6/1110:05 am
BOS
-
YYZ
Nonstop1h 55m
Porter Airlines
E 6/153:55 pm
YYZ
-
BOS
Nonstop1h 40m
Porter Airlines
Deal found 4/18$231
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
K 5/208:30 pm
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
E 5/259:00 am
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/14$231
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
L 5/167:10 am
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
L 5/233:05 pm
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/16$232
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
T 6/167:10 am
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
K 6/241:00 pm
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/13$233
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
N 6/1110:05 am
BOS
-
YYZ
Nonstop1h 55m
Porter Airlines
P 6/147:25 am
YYZ
-
BOS
Nonstop1h 40m
Porter Airlines
Deal found 4/18$234
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
T 5/263:25 pm
BOS
-
YTZ
1 stop3h 33m
Porter Airlines
N 5/289:00 am
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/16$234

Find flight deals from Maine to Ontario

Keep the following information in mind while searching for Maine to Ontario flight deals. Data was last updated aprill 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$222
(Kiwi.com)

One-way from

$98
(Flightnetwork)
Provider with most accurate pricing for Portland-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Toronto (YTO) flights.
Search Deals
From Maine to Ontario
Search Deals
One-way flight from Maine to Ontario
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Maine to 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, Cheapflights users made 2,558,603 searches. Data last updated aprill 18, 2026.
Use the filters below to find and compare flights from Maine to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

E 8/10

7:10 am-8:57 am

Nonstop1h 47m

Toronto Island

K 8/12

11:55 am-4:00 pm

1 stop4h 05m

$229

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

R 5/8

8:30 pm-10:17 pm

Nonstop1h 47m

Toronto Island

P 5/10

9:00 am-10:41 am

Nonstop1h 41m

$229

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

N 5/28

5:30 pm-7:17 pm

Nonstop1h 47m

Toronto Island

E 6/1

8:50 am-10:31 am

Nonstop1h 41m

$236

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

L 5/16

7:10 am-8:57 am

Nonstop1h 47m

Toronto Island

E 5/18

3:05 pm-4:46 pm

Nonstop1h 41m

$267
Quickest round-trip

BostonMontreal

BOS - YUL

BOSYUL

Boston Logan Intl

N 6/4

4:45 pm-6:15 pm

Nonstop1h 30m

Montreal Pierre Elliott Trudeau Intl

R 6/5

7:20 pm-8:55 pm

Nonstop1h 35m

$287

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

E 7/6

3:25 pm-9:48 pm

1 stop6h 23m

Toronto Island

K 7/8

1:00 pm-2:41 pm

Nonstop1h 41m

$296

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

T 7/7

3:25 pm-6:58 pm

1 stop3h 33m

Toronto Island

K 7/8

3:05 pm-4:46 pm

Nonstop1h 41m

$296

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

N 5/7

6:00 am-11:49 am

1 stop5h 49m

Toronto Pearson Intl

K 5/13

7:00 am-12:46 pm

1 stop5h 46m

$297

BostonMontreal

BOS - YUL

BOSYUL

Boston Logan Intl

E 5/4

11:27 am-4:10 pm

1 stop4h 43m

Montreal Pierre Elliott Trudeau Intl

E 5/4

6:35 pm-11:59 pm

1 stop5h 24m

$304

BostonMontreal

BOS - YUL

BOSYUL

Boston Logan Intl

E 5/11

12:00 pm-11:13 pm

2 stops11h 13m

Montreal Pierre Elliott Trudeau Intl

R 5/15

2:29 pm-10:25 pm

1 stop7h 56m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Maine to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Maine with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Maine to Ontario
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated aprill 18, 2026.
Get a feel of what it's like to fly with American Airlines from Maine to Ontario by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,604 reviews

Overall

7.1

Food

6.4

Entertainment

6.9

Boarding

7.5

Crew

7.9

Comfort

7.2

Reviews

1 / 20
4.0
Okay

Elizabeth,Mar 2026

ORD - MIA

Staff was rude and flight attendants 2 out of 3 looked like they had just been thru a hurricane.
American Airlines
7.1
Good
11,604 reviews
American Airlines
7.1
Good
11,604 reviews

Overall

7.1

Food

6.4

Entertainment

6.9

Boarding

7.5

Crew

7.9

Comfort

7.2

Reviews

1 / 20
4.0
Okay

Elizabeth,Mar 2026

ORD - MIA

Staff was rude and flight attendants 2 out of 3 looked like they had just been thru a hurricane.

Related info for your journey

Find useful and relevant information for your journey from Maine to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Maine to Region of Ontario?

    Airlines like Porter Airlines, United Airlines, and Delta fly from Maine to Region of Ontario in about 1h 47m. The time it takes to get you to your destination can typically vary by up to 6h 06m. There are 432 mi between Maine and Region of Ontario. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Maine to Ontario that include hotel bookings?

    Yes. In addition to deals on Maine to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Maine to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Maine to Ontario.

  • Can I find deals for business class flights from Maine to Ontario?

    Yes. Cheapflights offers flight deals from Maine to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Maine to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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