$277 Cheap Flights from Ottawa (YOW) to Portland (PWM)

View $277 flight on Mon, Oct 27, 2025Opens in a new window

Popular airlines from Ottawa International Airport (YOW) to Portland Intl. Jetport Airport (PWM)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Ottawa to Portland (YOW-PWM)

Prices were available within the past 7 days and start at $277 for one-way flights and $456 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Oct 6 - Tue, Oct 21
YOW
Ottawa
PWM
Portland
$456 Roundtrip, found 4 days ago
$456
Roundtrip
found 4 days ago
Select United flight, departing Mon, Oct 6 from Ottawa to Portland, returning Tue, Oct 21, priced at $456 found 4 days ago
United
Sun, Sep 14 - Tue, Sep 23
YOW
Ottawa
PWM
Portland
$467 Roundtrip, found 4 days ago
$467
Roundtrip
found 4 days ago
Select United flight, departing Sun, Sep 14 from Ottawa to Portland, returning Tue, Sep 23, priced at $467 found 4 days ago
United
Tue, Sep 30 - Sat, Oct 18
YOW
Ottawa
PWM
Portland
$476 Roundtrip, found 4 days ago
$476
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 30 from Ottawa to Portland, returning Sat, Oct 18, priced at $476 found 4 days ago
United
Mon, Oct 27 - Thu, Oct 30
YOW
Ottawa
PWM
Portland
$477 Roundtrip, found 6 days ago
$477
Roundtrip
found 6 days ago
Select United flight, departing Mon, Oct 27 from Ottawa to Portland, returning Thu, Oct 30, priced at $477 found 6 days ago
United
Mon, Oct 27 - Thu, Oct 30
YOW
Ottawa
PWM
Portland
$478 Roundtrip, found 6 days ago
$478
Roundtrip
found 6 days ago
Select United flight, departing Mon, Oct 27 from Ottawa to Portland, returning Thu, Oct 30, priced at $478 found 6 days ago
United
Sat, Oct 18 - Tue, Oct 28
YOW
Ottawa
PWM
Portland
$488 Roundtrip, found 4 days ago
$488
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 18 from Ottawa to Portland, returning Tue, Oct 28, priced at $488 found 4 days ago
Air Canada
Mon, Oct 27 - Thu, Oct 30
YOW
Ottawa
PWM
Portland
$494 Roundtrip, found 6 days ago
$494
Roundtrip
found 6 days ago
Select Air Canada flight, departing Mon, Oct 27 from Ottawa to Portland, returning Thu, Oct 30, priced at $494 found 6 days ago
United
Mon, Oct 27 - Sat, Nov 1
YOW
Ottawa
PWM
Portland
$495 Roundtrip, found 6 days ago
$495
Roundtrip
found 6 days ago
Select United flight, departing Mon, Oct 27 from Ottawa to Portland, returning Sat, Nov 1, priced at $495 found 6 days ago
United
Mon, Oct 27 - Tue, Oct 28
YOW
Ottawa
PWM
Portland
$498 Roundtrip, found 6 days ago
$498
Roundtrip
found 6 days ago
Select United flight, departing Mon, Oct 27 from Ottawa to Portland, returning Tue, Oct 28, priced at $498 found 6 days ago
WestJet
Mon, Oct 27 - Thu, Oct 30
YOW
Ottawa
PWM
Portland
$730 Roundtrip, found 6 days ago
$730
Roundtrip
found 6 days ago
Select WestJet flight, departing Mon, Oct 27 from Ottawa to Portland, returning Thu, Oct 30, priced at $730 found 6 days ago
Flights from Ottawa (YOW) to Portland (PWM)
Origin airport
Macdonald-Cartier Intl.
Destination airport
Portland Intl. Jetport
Airlines serving
WestJet
Roundtrip price
$455
Distance
288 mi

Ottawa to Portland Flights

The cheapest times to fly from Ottawa to Portland

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ottawa to Portland are during the month of October. You can find some of the cheapest flights from Ottawa to Portland with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ottawa to Portland

Sunday is one of the best days to book for cheap flights from Ottawa to Portland: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ottawa to Portland

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ottawa to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $277 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ottawa to Portland flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ottawa to Portland airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM) cost?
Get a cheap one-way flight from $277 or cheap return flight from $456 from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM)?
The cheapest month to fly from YOW to PWM is October, when there's less demand. Off-peak season is generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from YOW to PWM. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM)?
You'll need to hop on a flight with a layover if you're traveling from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from YOW to PWM?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM)?
Choose a flight from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM) that takes off before 3 PM to reduce the likelihood of delays. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM) last-minute?
Booking your flight from YOW to PWM shortly before your trip is usually more expensive. However, if there's some wiggle room with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a YOW to PWM flight and hotel package?
You can save money by booking a YOW to PWM flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've chosen your preferred flights and accommodations, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Macdonald-Cartier Intl. Airport (YOW) to Portland Intl. Jetport Airport (PWM)?
Typically, you can modify or cancel your YOW to PWM flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you want more information, visit our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.