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$139+ Cheap flights from Baltimore (BWI) to Ottawa (YOW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — YOW
Oct 31 — Nov 71
Fri 10/31
Fri 11/7
1 adult, Economy
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Cheap flight deals from Baltimore to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) 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 October 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$311
(Kiwi.com)

One-way from

$139
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$402
Provider with most accurate pricing for Baltimore/Washington-Ottawa flight deals.
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Provider most trusted by Cheapflights users for Baltimore/Washington-Ottawa flights.
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From Baltimore/Washington to Ottawa
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One-way flight from Baltimore/Washington to Ottawa
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Highest demand for flights based on searches. 2% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Baltimore to Ottawa

Cheapest flights from Baltimore to Ottawa
Explore the most affordable flight options available from Baltimore to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/29. 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 10/215:20 pmBWI - YOW
1 stop24h 00mMultiple Airlines
Wed 10/299:30 amYOW - BWI
1 stop23h 04mMultiple Airlines
Deal found 9/29$311
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 10/248:21 pmBWI - YOW
1 stop20h 59mMultiple Airlines
Tue 10/284:15 pmYOW - BWI
1 stop18h 46mMultiple Airlines
Deal found 10/1$346
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 10/238:21 pmBWI - YOW
1 stop20h 59mMultiple Airlines
Tue 10/289:30 amYOW - BWI
2 stops25h 31mMultiple Airlines
Deal found 9/30$348
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Mon 10/276:05 amBWI - YOW
2 stops11h 08mMultiple Airlines
Tue 10/284:15 pmYOW - BWI
1 stop18h 46mMultiple Airlines
Deal found 10/1$355
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 11/139:36 pmBWI - YOW
1 stop19h 49mMultiple Airlines
Thu 11/209:30 amYOW - BWI
1 stop7h 54mMultiple Airlines
Deal found 9/29$362
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Wed 10/298:00 amBWI - YOW
1 stop9h 13mMultiple Airlines
Wed 11/53:55 pmYOW - BWI
2 stops32h 29mMultiple Airlines
Deal found 10/1$371
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 10/319:29 amBWI - YOW
1 stop7h 44mMultiple Airlines
Wed 11/53:55 pmYOW - BWI
2 stops16h 23mMultiple Airlines
Deal found 9/30$385

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore 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 2,558,603 searches. Data last updated October 1, 2025.
Use the filters below to find and compare flights from Baltimore to Ottawa that are best for you.

Fly from

Baltimore

Fly to

Ottawa

Route

Depart

Return

Price

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 10/21

5:20 pm-5:20 pm

1 stop24h 00m

Ottawa

Wed 10/29

9:30 am-8:34 am

1 stop23h 04m

$311

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 10/23

8:21 pm-5:20 pm

1 stop20h 59m

Ottawa

Tue 10/28

9:30 am-11:01 am

2 stops25h 31m

$348

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Fri 10/24

8:21 pm-5:20 pm

1 stop20h 59m

Ottawa

Tue 10/28

3:55 pm-6:29 pm

2 stops26h 34m

$358

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 11/13

9:36 pm-5:25 pm

1 stop19h 49m

Ottawa

Thu 11/20

9:30 am-5:24 pm

1 stop7h 54m

$362

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Fri 10/31

9:29 am-5:13 pm

1 stop7h 44m

Ottawa

Wed 11/5

3:55 pm-8:18 am

2 stops16h 23m

$385

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 11/3

9:29 am-5:13 pm

1 stop7h 44m

Ottawa

Wed 11/5

3:55 pm-8:18 am

2 stops16h 23m

$385

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Fri 10/31

9:29 am-5:13 pm

1 stop7h 44m

Ottawa

Mon 11/3

7:15 pm-12:55 pm

2 stops17h 40m

$389

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 12/4

5:10 am-5:13 pm

2 stops12h 03m

Ottawa

Sun 12/7

4:20 pm-8:50 am

1 stop16h 30m

$395

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 10/21

8:00 am-9:00 pm

2 stops13h 00m

Ottawa

Fri 10/24

4:25 pm-2:48 pm

2 stops22h 23m

$404

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 10/29

8:00 am-5:13 pm

1 stop9h 13m

Ottawa

Wed 11/5

3:55 pm-9:03 pm

2 stops29h 08m

$408

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/30

Showing 1-10 of 17 results
1
2

Compare providers for flights from Baltimore 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 Baltimore to Ottawa in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-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 Baltimore-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 Baltimore to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Baltimore 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 Baltimore to Ottawa

What is the cheapest month to book a flight from Baltimore to Ottawa?

Currently, January is the cheapest month in which you can book a flight from Baltimore to Ottawa (average of $294). Flying from Baltimore to Ottawa in September is currently the most expensive (average of $428). 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 BWI to YOW?

Find hourly flight availability from Baltimore to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 1, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 13% on flights from Baltimore to Ottawa by exploring options for tickets in the morning.

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated October 1, 2025.
Read reviews from past customers who have flown United Airlines from Baltimore to Ottawa. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,929 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Baltimore to Ottawa round-trip?

    Cheapflights users have booked flights from Baltimore to Ottawa round-trip from $660.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Baltimore to Ottawa 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 Baltimore to Ottawa?

    Currently, January is the cheapest month in which you can book a flight from Baltimore to Ottawa (average of $294). Flying from Baltimore to Ottawa in September is currently the most expensive (average of $428). 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 Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Petawawa

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Alternative routes for Baltimore to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Baltimore to Ottawa

Discover the top airline that operate flights from Baltimore to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$660Average$895FlexibilityNo cancel feeOn-time69%

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