$276+ Cheap flights from Ottawa (YOW) 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — PWM
Oct 12 — Oct 191
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ottawa 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 Ottawa to Portland
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ottawa to PortlandExplore the most affordable flight options available from Ottawa to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.
Explore the most affordable flight options available from Ottawa to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:05 am -
1 stop14h 17m
Tue 10/206:00 am -
1 stop10h 38m
Deal found 9/8![Air Canada logo]()
$492
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:10 pm -
1 stop8h 18m
Fri 10/166:00 am -
1 stop10h 38m
Deal found 9/9![Air Canada logo]()
$581
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/177:30 pm -
1 stop4h 29m
Wed 10/217:25 pm -
1 stop4h 29m
Deal found 9/11![United Airlines logo]()
$582
This Air Canada deal was found by Cheapflights users on 9/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:35 pm -
2 stops8h 53m
Wed 10/216:00 am -
1 stop10h 38m
Deal found 9/11![Air Canada logo]()
$585
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/56:25 am -
1 stop8h 13m
Mon 10/125:15 am -
1 stop4h 41m
Deal found 9/8![United Airlines logo]()
$605
Best flights from Ottawa to PortlandDiscover carefully curated flight deals from Ottawa to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
Discover carefully curated flight deals from Ottawa to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:05 am -
1 stop14h 17m
Tue 10/206:00 am -
1 stop10h 38m
Deal found 9/8![Air Canada logo]()
$492
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/177:30 pm -
1 stop4h 29m
Wed 10/217:25 pm -
1 stop4h 29m
Deal found 9/7![United Airlines logo]()
$582
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/96:25 am -
1 stop15h 21m
Mon 10/125:15 am -
1 stop4h 41m
Deal found 9/8![United Airlines logo]()
$582
This Air Canada deal was found by Cheapflights users on 9/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:35 pm -
2 stops8h 53m
Wed 10/216:00 am -
1 stop10h 38m
Deal found 9/11![Air Canada logo]()
$585
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/242:52 pm -
1 stop9h 07m
Sat 10/318:31 am -
1 stop12h 45m
Deal found 9/9![United Airlines logo]()
$583
Last-minute flights from Ottawa to PortlandDiscover last-minute flight deals from Ottawa to Portland. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from Ottawa to Portland. Data last updated September 12, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/56:25 am -
1 stop8h 13m
Mon 10/125:15 am -
1 stop4h 41m
Deal found 9/8![United Airlines logo]()
$605
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:10 pm -
1 stop8h 18m
Fri 10/166:00 am -
1 stop10h 38m
Deal found 9/9![Air Canada logo]()
$581
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:05 am -
1 stop14h 17m
Tue 10/206:00 am -
1 stop10h 38m
Deal found 9/8![Air Canada logo]()
$492
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/177:30 pm -
1 stop4h 29m
Wed 10/217:25 pm -
1 stop4h 29m
Deal found 9/11![United Airlines logo]()
$582
This Air Canada deal was found by Cheapflights users on 9/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:35 pm -
2 stops8h 53m
Wed 10/216:00 am -
1 stop10h 38m
Deal found 9/11![Air Canada logo]()
$585
One-way flights from Ottawa to PortlandSearch for one-way flight options from Ottawa to Portland. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
Search for one-way flight options from Ottawa to Portland. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:01 pm -
1 stop14h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Air Canada logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sat 10/106:55 am -
2 stops26h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$300
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/106:01 pm -
1 stop5h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$321
This American Airlines deal was found by Cheapflights users on 9/8. 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 10/247:00 am -
2 stops9h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![American Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sat 10/106:25 pm -
3 stops41h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![WestJet logo]()
$480
Find flight deals from Ottawa to Portland
Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Portland (PWM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $492 (Air Canada) |
One-way from | $276 (Air Canada) |
Cheapflights Fare Finder
Customize your flight search to find flights from Ottawa 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 September 12, 2026.
Use the filters below to find and compare flights from Ottawa to Portland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OttawaPortland
YOW Ottawa - PWM Portland
YOWPWM
Ottawa
Sat 10/24
6:01 pm-9:00 am
1 stop14h 59m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$276
Quickest round-trip
OttawaPortland
YOW Ottawa - PWM Portland
YOWPWM
Ottawa
Sat 10/10
6:01 pm-11:28 pm
1 stop5h 27m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$321
OttawaPortland
YOW Ottawa - PWM Portland
YOWPWM
Ottawa
Sat 10/24
7:00 am-4:47 pm
2 stops9h 47m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$329
OttawaPortland
YOW Ottawa - PWM Portland
YOWPWM
Ottawa
Sat 10/10
6:25 pm-11:57 am
3 stops41h 32m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$480
OttawaPortland
YOW Ottawa - PWM Portland
YOWPWM
Ottawa
Tue 10/13
6:05 am-8:22 pm
1 stop14h 17m
Portland
Tue 10/20
6:00 am-4:38 pm
1 stop10h 38m
$492
OttawaPortland
YOW Ottawa - PWM Portland
YOWPWM
Ottawa
Sat 10/17
7:30 pm-11:59 pm
1 stop4h 29m
Portland
Wed 10/21
7:25 pm-11:54 pm
1 stop4h 29m
$582
OttawaPortland
YOW Ottawa - PWM Portland
YOWPWM
Ottawa
Fri 10/9
6:25 am-9:46 pm
1 stop15h 21m
Portland
Mon 10/12
5:15 am-9:56 am
1 stop4h 41m
$582
OttawaPortland
YOW Ottawa - PWM Portland
YOWPWM
Ottawa
Sat 10/24
2:52 pm-11:59 pm
1 stop9h 07m
Portland
Sat 10/31
8:31 am-9:16 pm
1 stop12h 45m
$583
OttawaPortland
YOW Ottawa - PWM Portland
YOWPWM
Ottawa
Sat 10/17
2:35 pm-11:28 pm
2 stops8h 53m
Portland
Wed 10/21
6:00 am-4:38 pm
1 stop10h 38m
$585
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Ottawa-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-Portland, Maine flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ottawa-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ottawa to Portland
Have a flexible travel schedule? Discover the best time to fly to Portland from Ottawa with our price prediction graph.
YOW-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.
Related info for your journey
Find useful and relevant information for your journey from Ottawa 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 locationsNorth Conway
Lewiston
Brunswick
Conway
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
Other flights from Ottawa
Popular flights
Portland flight routes