$284 Cheap Flights from Baltimore (BWI) to Ottawa (YOW)

View $284 flight on Wed, Aug 20, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Ottawa International Airport (YOW)

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Cheap Flights from Baltimore to Ottawa (BWI-YOW)

Prices were available within the past 7 days and start at $284 for one-way flights and $622 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Aug 19 - Wed, Aug 20
BWI
Baltimore
YOW
Ottawa
$622 Roundtrip, found 1 day ago
$622
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Aug 19 from Baltimore to Ottawa, returning Wed, Aug 20, priced at $622 found 1 day ago
Delta
Thu, Sep 4 - Sat, Sep 6
BWI
Baltimore
YOW
Ottawa
$647 Roundtrip, found 5 hours ago
$647
Roundtrip
found 5 hours ago
Select Delta flight, departing Thu, Sep 4 from Baltimore to Ottawa, returning Sat, Sep 6, priced at $647 found 5 hours ago
Delta
Wed, Sep 10 - Sat, Sep 13
BWI
Baltimore
YOW
Ottawa
$652 Roundtrip, found 3 days ago
$652
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Sep 10 from Baltimore to Ottawa, returning Sat, Sep 13, priced at $652 found 3 days ago
Delta
Sun, Aug 31 - Fri, Sep 5
BWI
Baltimore
YOW
Ottawa
$656 Roundtrip, found 2 days ago
$656
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Aug 31 from Baltimore to Ottawa, returning Fri, Sep 5, priced at $656 found 2 days ago
Delta
Sat, Aug 30 - Mon, Sep 1
BWI
Baltimore
YOW
Ottawa
$663 Roundtrip, found 6 days ago
$663
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Aug 30 from Baltimore to Ottawa, returning Mon, Sep 1, priced at $663 found 6 days ago
Delta
Thu, Sep 11 - Thu, Sep 18
BWI
Baltimore
YOW
Ottawa
$668 Roundtrip, found 5 days ago
$668
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Sep 11 from Baltimore to Ottawa, returning Thu, Sep 18, priced at $668 found 5 days ago
Delta
Tue, Aug 19 - Wed, Aug 20
BWI
Baltimore
YOW
Ottawa
$670 Roundtrip, found 1 day ago
$670
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Aug 19 from Baltimore to Ottawa, returning Wed, Aug 20, priced at $670 found 1 day ago
Delta
Thu, Sep 4 - Sat, Sep 6
BWI
Baltimore
YOW
Ottawa
$671 Roundtrip, found 5 hours ago
$671
Roundtrip
found 5 hours ago
Select Delta flight, departing Thu, Sep 4 from Baltimore to Ottawa, returning Sat, Sep 6, priced at $671 found 5 hours ago
United
Thu, Sep 4 - Sat, Sep 6
BWI
Baltimore
YOW
Ottawa
$683 Roundtrip, found 5 hours ago
$683
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Sep 4 from Baltimore to Ottawa, returning Sat, Sep 6, priced at $683 found 5 hours ago
WestJet
Mon, Sep 8 - Wed, Sep 10
BWI
Baltimore
YOW
Ottawa
$877 Roundtrip, found 1 day ago
$877
Roundtrip
found 1 day ago
Select WestJet flight, departing Mon, Sep 8 from Baltimore to Ottawa, returning Wed, Sep 10, priced at $877 found 1 day ago

Find the cheapest month to fly from Baltimore (BWI) to Ottawa (YOW)

May is typically the cheapest month to fly

From $425 - $1,110 per traveler.

Graph displaying average flight prices per month

Alternative airports near Ottawa

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Macdonald-Cartier Intl. YOW. Cheapest option available. Average driving time to city center is 15 minutes. Flights from $725
YOW
Macdonald-Cartier Intl.
Cheapest
Average driving time to city center15 min
Flights from $725
Flights from Baltimore (BWI) to Ottawa (YOW)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Macdonald-Cartier Intl.
Airlines serving
United, WestJet
Roundtrip price
$621
Distance
427 mi

Baltimore to Ottawa Flights

The cheapest times to fly from Baltimore to Ottawa

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 Baltimore to Ottawa are during the month of August. You can find some of the cheapest flights from Baltimore to Ottawa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Ottawa

Sunday is one of the best days to book for cheap flights from Baltimore to Ottawa: 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 Baltimore to Ottawa

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 Baltimore to Ottawa in 2025. You can also book with separate airlines for your outbound and return journeys, from $284 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 Baltimore to Ottawa 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 Baltimore to Ottawa 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Macdonald-Cartier Intl. Airport (YOW) cost?
Discover the latest flight deals from BWI to YOW by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BWI to YOW?
The cheapest flights from BWI to YOW are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Macdonald-Cartier Intl. Airport (YOW)?
You can't fly directly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Macdonald-Cartier Intl. Airport (YOW). However, there are other airports that have nonstop flights. Hop on your plane at Ronald Reagan Washington National Airport (DCA) and fly straight to Ottawa without a layover.
What is the cheapest airline that flies from BWI to YOW?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BWI to YOW. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Macdonald-Cartier Intl. Airport (YOW)?
Nonstop flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Macdonald-Cartier Intl. Airport (YOW) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BWI to YOW?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Macdonald-Cartier Intl. Airport (YOW)?
To avoid potential delays on the Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Macdonald-Cartier Intl. Airport (YOW) route, travel before 3 PM. Later flights have a 22% higher chance of being canceled.**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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Macdonald-Cartier Intl. Airport (YOW) last-minute?
Holding off until just before your trip to book a flight from BWI to YOW generally means paying more. While you may come across some last-minute discounts, there's no guarantee. Keep your travel plans flexible for a better chance of snagging a bargain.
Is it cheaper to book a BWI to YOW flight and hotel package?
You can save money by booking a BWI to YOW 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 selected your ideal flights and accommodations, consider other add-ons like car rentals, activities and tours.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Macdonald-Cartier Intl. Airport (YOW)?
Typically, it's possible to cancel or reschedule your BWI to YOW flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.