$268+ Cheap flights from Ontario to Portland, ME (PWM)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
Dec 4 — Dec 111
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ontario to Portland with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Portland
Cheapest
Best
Last-minute
One-way
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 November 4, 2026.
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 November 4, 2026.
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:57 pm -
1 stop5h 45m
Wed 12/97:00 am -
1 stop10h 49m
Deal found 11/4![United Airlines logo]()
$476
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1512:55 pm -
1 stop10h 29m
Tue 12/227:44 pm -
1 stop13h 30m
Deal found 10/31![United Airlines logo]()
$489
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Wed 12/26:20 pm -
2 stops38h 48m
Wed 12/97:12 pm -
1 stop24h 05m
Deal found 11/4![Multiple Airlines logo]()
$510
This American Airlines deal was found by Cheapflights users on 11/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:11 pm -
1 stop5h 35m
Tue 12/85:00 am -
2 stops10h 45m
Deal found 11/3![American Airlines logo]()
$518
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1710:53 am -
1 stop11h 52m
Thu 12/243:38 pm -
1 stop7h 48m
Deal found 11/1![United Airlines logo]()
$520
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1612:00 pm -
2 stops11h 24m
Wed 12/236:00 am -
1 stop7h 43m
Deal found 11/1![United Airlines logo]()
$564
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:57 pm -
1 stop8h 24m
Mon 11/167:35 pm -
1 stop4h 17m
Deal found 11/2![United Airlines logo]()
$578
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/288:35 am -
1 stop5h 41m
Sat 12/57:00 am -
1 stop6h 43m
Deal found 10/31![United Airlines logo]()
$586
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/227:44 pm -
1 stop4h 15m
Wed 12/306:00 am -
1 stop5h 48m
Deal found 11/1![United Airlines logo]()
$628
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/197:44 pm -
1 stop4h 15m
Wed 12/307:44 pm -
1 stop13h 30m
Deal found 11/1![United Airlines logo]()
$636
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:44 am -
1 stop13h 37m
Thu 11/128:49 am -
1 stop11h 10m
Deal found 10/31![United Airlines logo]()
$655
Best flights from Ontario to PortlandDiscover carefully curated flight deals from Ontario to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 4, 2026.
Discover carefully curated flight deals from Ontario to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 4, 2026.
This Delta deal was found by Cheapflights users on 10/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/97:50 am -
1 stop13h 20m
Tue 1/1211:38 am -
1 stop8h 55m
Deal found 10/31![Delta logo]()
$449
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:57 pm -
1 stop5h 45m
Wed 12/97:00 am -
1 stop10h 49m
Deal found 11/4![United Airlines logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Wed 12/26:20 pm -
2 stops38h 48m
Wed 12/97:12 pm -
1 stop24h 05m
Deal found 11/4![Multiple Airlines logo]()
$510
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/96:40 pm -
1 stop14h 24m
Tue 1/127:10 am -
1 stop4h 38m
Deal found 11/2![United Airlines logo]()
$476
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2712:45 pm -
1 stop5h 28m
Tue 5/46:00 am -
1 stop11h 59m
Deal found 11/3![United Airlines logo]()
$476
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/510:00 am -
1 stop9h 12m
Tue 12/86:00 am -
1 stop7h 43m
Deal found 11/3![United Airlines logo]()
$476
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1512:55 pm -
1 stop10h 29m
Tue 12/227:44 pm -
1 stop13h 30m
Deal found 10/31![United Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/22:43 pm -
1 stop4h 10m
Thu 2/49:10 am -
1 stop4h 33m
Deal found 11/3![United Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/189:44 am -
1 stop6h 02m
Fri 12/256:00 am -
1 stop11h 49m
Deal found 11/3![United Airlines logo]()
$510
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1710:53 am -
1 stop11h 52m
Thu 12/243:38 pm -
1 stop7h 48m
Deal found 11/1![United Airlines logo]()
$520
Last-minute flights from Ontario to PortlandDiscover last-minute flight deals from Ontario to Portland. Data last updated November 4, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Portland. Data last updated November 4, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:55 pm -
1 stop10h 26m
Thu 11/125:08 pm -
1 stop6h 51m
Deal found 10/31![United Airlines logo]()
$655
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:57 pm -
1 stop8h 24m
Mon 11/167:35 pm -
1 stop4h 17m
Deal found 11/2![United Airlines logo]()
$578
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/288:35 am -
1 stop5h 41m
Sat 12/57:00 am -
1 stop6h 43m
Deal found 10/31![United Airlines logo]()
$586
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:57 pm -
1 stop5h 45m
Wed 12/97:00 am -
1 stop10h 49m
Deal found 11/4![United Airlines logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Wed 12/26:20 pm -
2 stops38h 48m
Wed 12/97:12 pm -
1 stop24h 05m
Deal found 11/4![Multiple Airlines logo]()
$510
This American Airlines deal was found by Cheapflights users on 11/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:11 pm -
1 stop5h 35m
Tue 12/85:00 am -
2 stops10h 45m
Deal found 11/3![American Airlines logo]()
$518
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1512:55 pm -
1 stop10h 29m
Tue 12/227:44 pm -
1 stop13h 30m
Deal found 10/31![United Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1612:00 pm -
2 stops11h 24m
Wed 12/236:00 am -
1 stop7h 43m
Deal found 11/1![United Airlines logo]()
$564
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1710:53 am -
1 stop11h 52m
Thu 12/243:38 pm -
1 stop7h 48m
Deal found 11/1![United Airlines logo]()
$520
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/197:44 pm -
1 stop4h 15m
Wed 12/307:44 pm -
1 stop13h 30m
Deal found 11/1![United Airlines logo]()
$636
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/227:44 pm -
1 stop4h 15m
Wed 12/306:00 am -
1 stop5h 48m
Deal found 11/1![United Airlines logo]()
$628
One-way flights from Ontario to PortlandSearch for one-way flight options from Ontario to Portland. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
Search for one-way flight options from Ontario to Portland. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
This Delta deal was found by Cheapflights users on 11/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/175:10 pm -
1 stop6h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Delta logo]()
$268
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:35 pm -
1 stop6h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![United Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Sun 11/227:35 am -
2 stops30h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Mon 11/166:30 am -
2 stops33h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Tue 11/1712:20 pm -
2 stops28h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:30 am -
1 stop12h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![United Airlines logo]()
$280
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:00 pm -
2 stops11h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![United Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Thu 12/179:00 am -
3 stops24h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 10/31. 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.
Mon 11/232:25 pm -
3 stops42h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$362
Find flight deals from Ontario to Portland
Keep the following information in mind while searching for Ontario to Portland flight deals. Data was last updated November 4, 2026.
Round-trip from | $449 (Delta) |
|---|---|
One-way from | $268 (Delta) |
Popular in | June |
Cheapest in | August |
Average price | $546 |
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 7,457,451 searches. Data last updated November 4, 2026.
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
Cheapest round-trip
Quickest round-trip
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Wed 11/18
7:43 am-1:26 pm
1 stop5h 43m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$268
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Mon 11/23
3:35 pm-9:51 pm
1 stop6h 16m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$269
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Mon 11/16
6:30 am-4:24 pm
2 stops33h 54m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$275
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Fri 12/18
6:00 am-3:20 pm
1 stop9h 20m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$280
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Thu 12/17
6:00 am-3:20 pm
1 stop9h 20m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$280
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Mon 11/16
10:30 am-11:21 pm
1 stop12h 51m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$280
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Mon 11/23
2:25 pm-9:08 am
3 stops42h 43m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$362
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Sun 11/29
10:30 am-11:21 pm
1 stop12h 51m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$427
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Sat 1/9
7:50 am-9:10 pm
1 stop13h 20m
Portland
Tue 1/12
11:38 am-8:33 pm
1 stop8h 55m
$449
TorontoPortland
YYZ Toronto Pearson Intl - PWM Portland
YYZPWM
Toronto Pearson Intl
Wed 12/2
2:57 pm-8:42 pm
1 stop5h 45m
Portland
Wed 12/9
7:00 am-5:49 pm
1 stop10h 49m
$476
Showing 1-10 of 20 resultsSorted by cheapest first
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.
YYZ-PWM
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 Ontario to Portland
CAON-PWM
YYZ-PWM
No data available for this route at this time. Please check back soon.
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.
Traveling to a place near Portland?
Book flights to Portland if you plan to visit one of these locationsLewiston
North Conway
Brunswick
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Portland flight routes