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$531+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — PWM
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 11, 2025.

Round-trip from

$531
(United Airlines)

Popular in

January

Cheapest in

December

Average price

$608
From Ottawa to Portland
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Ottawa to Portland

Cheapest flights from Ottawa to Portland
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 11, 2025.

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.
Tue 10/146:33 amYOW - PWM
1 stop8h 00mUnited Airlines
Mon 10/203:45 pmPWM - YOW
1 stop6h 20mUnited Airlines
Deal found 9/10$531
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 12/275:59 pmYOW - PWM
1 stop5h 23mAir Canada
Tue 12/306:00 amPWM - YOW
2 stops8h 12mAir Canada
Deal found 9/11$583
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 12/272:05 pmYOW - PWM
2 stops9h 17mUnited Airlines
Tue 12/306:00 amPWM - YOW
2 stops9h 23mUnited Airlines
Deal found 9/11$596
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.
Tue 10/145:50 pmYOW - PWM
1 stop5h 23mAir Canada
Mon 10/203:45 pmPWM - YOW
2 stops9h 49mAir Canada
Deal found 9/11$613

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 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Ottawa to Portland that are best for you.

Fly from

Ottawa

Fly to

Portland

Route

Depart

Return

Price

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Tue 10/14

12:30 pm-4:44 pm

1 stop4h 14m

Portland

Mon 10/20

5:41 pm-10:05 pm

1 stop4h 24m

$545

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Sat 12/27

5:59 pm-11:22 pm

1 stop5h 23m

Portland

Tue 12/30

7:30 pm-11:54 pm

1 stop4h 24m

$545

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Sat 12/27

5:59 pm-11:22 pm

1 stop5h 23m

Portland

Tue 12/30

6:00 am-2:12 pm

2 stops8h 12m

$583

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Tue 10/14

5:50 pm-11:13 pm

1 stop5h 23m

Portland

Mon 10/20

3:45 pm-1:34 am

2 stops9h 49m

$613

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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.
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 Ottawa to Portland

What is the cheapest month to book a flight from Ottawa to Portland, Maine?

Currently, January is the cheapest month in which you can book a flight from Ottawa to Portland, Maine (average of $296). Flying from Ottawa to Portland, Maine in July is currently the most expensive (average of $394). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YOW to PWM?

Find hourly flight availability from Ottawa 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 September 11, 2025.

It’s optimal to fly from Ottawa to Portland, Maine in the morning. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight at noon.

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.

  • How long is the flight from Ottawa to Portland, Maine?

    There are many flights that can get you from Ottawa to Portland, Maine in 4h 14m. Fly via United Airlines or Air Canada to get the fastest option. Ottawa and Portland, Maine are separated by a distance of 288 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Ottawa to Portland that include hotel bookings?

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

  • How can I find direct flights from Ottawa to Portland?

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

  • Can I find deals for business class flights from Ottawa to Portland?

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

  • What is the cheapest month to book a flight from Ottawa to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from Ottawa to Portland, Maine (average of $296). Flying from Ottawa to Portland, Maine in July is currently the most expensive (average of $394). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Brunswick
North Conway
Auburn
Conway
Lewiston

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