Cheap flights from Ontario to Portland, ME from C$ 306
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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Ontario to Portland
Keep the following information in mind while searching for Ontario to Portland flight deals. Data was last updated 12 June 2025.
Find flight deals from Ontario to Portland
Cheapest flights from Ontario to PortlandExplore the most affordable flight options available from Ontario to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.
Explore the most affordable flight options available from Ontario to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Portland 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 629,999 searches. Data last updated 12 June 2025.
Use the filters below to find and compare flights from Ontario to Portland that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
TorontoPortland
YYZ - PWM
YYZPWM
Toronto Pearson Intl
Tue 4/11
6:00 a.m.-1:52 p.m.
1 stop7h 52m
Portland
Mon 10/11
5:59 p.m.-11:02 a.m.
1 stop17h 03m
MontrealPortland
YUL - PWM
YULPWM
Montreal Pierre Elliott Trudeau Intl
Tue 15/7
6:00 a.m.-11:29 p.m.
1 stop17h 29m
Portland
Wed 23/7
2:00 p.m.-9:28 p.m.
1 stop7h 28m
TorontoPortland
YYZ - PWM
YYZPWM
Toronto Pearson Intl
Thu 11/9
7:15 a.m.-9:06 a.m.
1 stop25h 51m
Portland
Sun 14/9
5:33 p.m.-6:36 p.m.
1 stop25h 03m
TorontoPortland
YYZ - PWM
YYZPWM
Toronto Pearson Intl
Sun 6/7
7:15 a.m.-8:38 p.m.
1 stop13h 23m
Portland
Tue 15/7
7:00 a.m.-11:05 p.m.
1 stop16h 05m
MontrealPortland
YUL - PWM
YULPWM
Montreal Pierre Elliott Trudeau Intl
Tue 8/7
10:30 a.m.-8:24 p.m.
1 stop9h 54m
Portland
Tue 15/7
7:00 a.m.-4:45 p.m.
1 stop9h 45m
MontrealPortland
YUL - PWM
YULPWM
Montreal Pierre Elliott Trudeau Intl
Tue 8/7
6:05 p.m.-2:24 p.m.
2 stops20h 19m
Portland
Tue 15/7
6:10 a.m.-9:44 p.m.
2 stops15h 34m
TorontoPortland
YYZ - PWM
YYZPWM
Toronto Pearson Intl
Mon 14/7
7:47 p.m.-11:59 p.m.
1 stop4h 12m
Portland
Mon 28/7
6:20 p.m.-11:58 p.m.
1 stop5h 38m
TorontoPortland
YYZ - PWM
YYZPWM
Toronto Pearson Intl
Fri 12/9
8:00 a.m.-12:54 p.m.
2 stops28h 54m
Portland
Mon 15/9
5:59 p.m.-6:07 p.m.
1 stop24h 08m
TorontoPortland
YYZ - PWM
YYZPWM
Toronto Pearson Intl
Sun 6/7
11:15 p.m.-1:20 p.m.
2 stops14h 05m
Portland
Tue 15/7
7:28 a.m.-12:40 p.m.
1 stop5h 12m
MontrealPortland
YUL - PWM
YULPWM
Montreal Pierre Elliott Trudeau Intl
Wed 13/8
8:10 a.m.-1:19 p.m.
1 stop5h 09m
Portland
Wed 13/8
3:50 p.m.-10:06 p.m.
1 stop6h 16m
Best time to book a flight from Ontario to Portland
Have a flexible travel schedule? Discover the best time to fly to Portland from Ontario with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Portland
What is the cheapest time of day to fly from ON to PWM?
Find hourly flight availability from Ontario to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 June 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Portland, Maine as you normally would.
Rainfall in Portland by month
Plan your trip to Portland by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Portland, Maine ranges from 73.0 - 115.0 mm per month. November is typically the wettest month, when rainfall can reach 115.0 mm. August is typically the driest time to visit Portland, Maine when rainfall is around 73.0 mm.
Temperature in Portland by month
Plan your trip to Portland by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).
Reviews of airlines servicing Portland
Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated 12 June 2025.
To help decide which airline to fly from Ontario to Portland, see what other customers have to say about Delta, United Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Portland
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from Ontario to Portland
Discover the top 3 airlines that operate flights from Ontario to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 June 2025.
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How does Cheapflights help users find flights from Ontario to Portland?
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Why should you use Cheapflights to find cheap flight tickets from Ontario to Portland?
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Can Cheapflights find flights from Ontario to Portland with no change fees?
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