$290+ Cheap flights from Portland, ME (PWM) to Ottawa (YOW)
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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — YOW
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Ottawa 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 Portland to Ottawa
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to OttawaExplore the most affordable flight options available from Portland to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from Portland to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 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 10/103:41 pm -
1 stop6h 54m
Mon 10/126:01 pm -
1 stop5h 27m
Deal found 9/8![Air Canada logo]()
$628
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/206:00 am -
1 stop10h 38m
Tue 10/276:15 am -
1 stop8h 01m
Deal found 9/5![United Airlines logo]()
$755
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Tue 10/205:37 pm -
2 stops26h 23m
Tue 10/277:00 am -
2 stops9h 57m
Deal found 9/5![American Airlines logo]()
$786
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.
Sat 10/106:00 am -
1 stop10h 38m
Mon 10/125:10 am -
2 stops9h 28m
Deal found 9/8![United Airlines logo]()
$851
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/96:00 am -
1 stop10h 38m
Mon 10/126:00 am -
1 stop4h 02m
Deal found 9/6![United Airlines logo]()
$862
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.
Thu 9/177:35 pm -
1 stop4h 19m
Wed 9/303:10 pm -
1 stop8h 18m
Deal found 9/7![United Airlines logo]()
$970
Best flights from Portland to OttawaDiscover carefully curated flight deals from Portland to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from Portland to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Tue 10/204:27 pm -
3 stops27h 33m
Tue 10/277:00 am -
2 stops9h 57m
Deal found 9/5![American Airlines logo]()
$796
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/202:32 pm -
2 stops6h 48m
Tue 10/276:00 am -
1 stop7h 26m
Deal found 9/5![United Airlines logo]()
$846
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.
Sat 10/106:00 am -
1 stop10h 38m
Mon 10/125:10 am -
2 stops9h 28m
Deal found 9/8![United Airlines logo]()
$851
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/96:00 am -
1 stop10h 38m
Mon 10/126:00 am -
1 stop4h 02m
Deal found 9/6![United Airlines logo]()
$862
This United Airlines deal was found by Cheapflights users on 9/6. 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 2/126:00 am -
1 stop7h 26m
Mon 2/152:48 pm -
1 stop3h 25m
Deal found 9/6![United Airlines logo]()
$862
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 10/104:27 pm -
2 stops22h 28m
Mon 10/127:00 am -
3 stops27h 22m
Deal found 9/8![American Airlines logo]()
$1,172
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Fri 2/125:35 am -
3 stops36h 23m
Mon 2/157:00 am -
2 stops33h 37m
Deal found 9/6![American Airlines logo]()
$1,206
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Fri 10/94:27 pm -
3 stops27h 33m
Mon 10/127:00 am -
3 stops27h 22m
Deal found 9/6![American Airlines logo]()
$1,356
Last-minute flights from Portland to OttawaDiscover last-minute flight deals from Portland to Ottawa. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Ottawa. Data last updated September 9, 2026 and is based on user searches.
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.
Thu 9/177:35 pm -
1 stop4h 19m
Wed 9/303:10 pm -
1 stop8h 18m
Deal found 9/7![United Airlines logo]()
$970
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/96:00 am -
1 stop10h 38m
Mon 10/126:00 am -
1 stop4h 02m
Deal found 9/6![United Airlines logo]()
$862
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 10/103:41 pm -
1 stop6h 54m
Mon 10/126:01 pm -
1 stop5h 27m
Deal found 9/8![Air Canada logo]()
$628
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.
Sat 10/106:00 am -
1 stop10h 38m
Mon 10/125:10 am -
2 stops9h 28m
Deal found 9/8![United Airlines logo]()
$851
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/206:00 am -
1 stop10h 38m
Tue 10/276:15 am -
1 stop8h 01m
Deal found 9/5![United Airlines logo]()
$755
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Tue 10/205:37 pm -
2 stops26h 23m
Tue 10/277:00 am -
2 stops9h 57m
Deal found 9/5![American Airlines logo]()
$786
One-way flights from Portland to OttawaSearch for one-way flight options from Portland to Ottawa. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from Portland to Ottawa. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:30 am -
2 stops9h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 10/205:09 pm -
3 stops31h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$331
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.
Thu 10/225:15 am -
1 stop4h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$333
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/206:00 am -
1 stop7h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![United Airlines logo]()
$334
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 10/910:43 am -
1 stop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Air Canada logo]()
$387
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:00 am -
3 stops46h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$467
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.
Fri 10/96:00 am -
2 stops17h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$486
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:10 pm -
3 stops16h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$579
Find flight deals from Portland to Ottawa
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Ottawa (YOW). 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 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $628 (Air Canada) |
One-way from | $290 (American Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Ottawa 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 9, 2026.
Use the filters below to find and compare flights from Portland to Ottawa that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Thu 10/22
5:30 am-2:55 pm
2 stops9h 25m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$290
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Tue 10/20
5:09 pm-12:20 am
3 stops31h 11m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$331
Quickest round-trip
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Thu 10/22
5:15 am-9:56 am
1 stop4h 41m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$333
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Tue 10/20
6:00 am-1:59 pm
1 stop7h 59m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$334
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Fri 10/9
7:00 am-5:35 am
3 stops46h 35m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$467
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Fri 10/9
6:00 am-11:54 pm
2 stops17h 54m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$486
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Thu 10/22
3:10 pm-8:05 am
3 stops16h 55m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$579
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Tue 10/20
4:27 pm-8:00 pm
3 stops27h 33m
Ottawa
Tue 10/27
7:00 am-4:57 pm
2 stops9h 57m
$796
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Tue 10/20
2:32 pm-9:20 pm
2 stops6h 48m
Ottawa
Tue 10/27
6:00 am-1:26 pm
1 stop7h 26m
$846
PortlandOttawa
PWM Portland - YOW Ottawa
PWMYOW
Portland
Sat 10/10
6:00 am-4:38 pm
1 stop10h 38m
Ottawa
Mon 10/12
5:10 am-2:38 pm
2 stops9h 28m
$851
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from Portland to Ottawa
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Ottawa in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland, Maine-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Ottawa flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland, Maine-Ottawa 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 Portland, Maine-Ottawa 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 Portland to Ottawa
Have a flexible travel schedule? Discover the best time to fly to Ottawa from Portland with our price prediction graph.
PWM-YOW
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 Portland to Ottawa. 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 Ottawa?
Book flights to Ottawa if you plan to visit one of these locationsGatineau
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