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Cheap flights from Ottawa to Baltimore from C$ 226

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — BWI
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Ottawa to Baltimore

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Baltimore (BWI). 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 11 September 2025.

Round-trip from

C$ 405

One-way from

C$ 226

Popular in

February

Cheapest in

April

Average price

C$ 820
2/10-6/10
  • 2/10-6/10
  • 3 total stops
  • 23h 56m total
  • Ottawa to Baltimore
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3/10
  • 3/10
  • 1 total stop
  • 17h 42m total
  • Ottawa to Baltimore
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 288 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (C$ 93 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ottawa to Baltimore

Cheapest flights from Ottawa to Baltimore
Explore the most affordable flight options available from Ottawa to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Thu 2/107:00 a.m.YOW - BWI
2 stops13h 32mMultiple Airlines
Mon 6/106:56 a.m.BWI - YOW
1 stop10h 24mMultiple Airlines
Deal found 9/9C$ 405
Wed 15/103:50 p.m.YOW - BWI
1 stop19h 11mMultiple Airlines
Sat 18/108:17 p.m.BWI - YOW
1 stop21h 03mMultiple Airlines
Deal found 9/9C$ 407
Wed 8/103:50 p.m.YOW - BWI
1 stop7h 42mMultiple Airlines
Wed 15/106:56 a.m.BWI - YOW
1 stop10h 24mMultiple Airlines
Deal found 10/9C$ 439
Thu 30/109:30 a.m.YOW - BWI
1 stop9h 56mMultiple Airlines
Fri 31/107:24 p.m.BWI - YOW
2 stops29h 18mMultiple Airlines
Deal found 11/9C$ 460
Tue 14/104:25 p.m.YOW - BWI
1 stop20h 15mMultiple Airlines
Tue 21/1011:19 a.m.BWI - YOW
1 stop29h 38mMultiple Airlines
Deal found 11/9C$ 464

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Baltimore 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 629,999 searches. Data last updated 11 September 2025.
Use the filters below to find and compare flights from Ottawa to Baltimore that are best for you.

Fly from

Ottawa

Fly to

Baltimore

Route

Depart

Return

Price

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Thu 2/10

7:00 a.m.-8:32 p.m.

2 stops13h 32m

Baltimore/Washington

Mon 6/10

6:56 a.m.-5:20 p.m.

1 stop10h 24m

C$ 405

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Wed 15/10

3:50 p.m.-11:01 a.m.

1 stop19h 11m

Baltimore/Washington

Sat 18/10

8:17 p.m.-5:20 p.m.

1 stop21h 03m

C$ 407

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Tue 14/10

7:00 a.m.-11:32 p.m.

2 stops16h 32m

Baltimore/Washington

Tue 21/10

11:19 a.m.-4:57 p.m.

1 stop29h 38m

C$ 484

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Fri 12/12

7:00 a.m.-7:17 p.m.

1 stop12h 17m

Baltimore/Washington

Sun 14/12

6:26 p.m.-11:58 p.m.

1 stop29h 32m

C$ 497

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Sat 4/10

3:50 p.m.-11:01 a.m.

1 stop19h 11m

Baltimore/Washington

Thu 16/10

8:21 p.m.-5:20 p.m.

1 stop20h 59m

C$ 513

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Fri 3/10

3:50 p.m.-9:32 a.m.

1 stop17h 42m

Baltimore/Washington

Sun 12/10

6:56 a.m.-5:20 p.m.

1 stop10h 24m

C$ 524

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Wed 15/10

4:25 p.m.-11:01 a.m.

2 stops18h 36m

Baltimore/Washington

Thu 16/10

8:21 p.m.-5:20 p.m.

1 stop20h 59m

C$ 543

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Fri 3/10

3:50 p.m.-9:32 a.m.

1 stop17h 42m

C$ 226

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Sat 25/10

7:00 a.m.-5:37 p.m.

2 stops10h 37m

C$ 249

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Thu 25/9

11:00 a.m.-4:50 p.m.

2 stops29h 50m

C$ 340

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 13 results
1
2

Best time to book a flight from Ottawa to Baltimore

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

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

Currently, February is the cheapest month in which you can book a flight from Ottawa to Baltimore (average of C$ 327). Flying from Ottawa to Baltimore in June is currently the most expensive (average of C$ 398). 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 BWI?

Find hourly flight availability from Ottawa to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

One of the essential ways to save on airfare from Ottawa to Baltimore is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 44% on airfare.

Reviews of airlines servicing Baltimore

Get insights into the airlines that provide service to Baltimore. 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 Baltimore. Reviews last updated 11 September 2025.
See what other customers who have flown with Porter Airlines and United Airlines from Ottawa to Baltimore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
363 reviews
Check prices

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.6

Crew

8.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.6

Crew

8.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,937 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.6

Crew

8.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

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

  • What are the cheapest airlines flying from Ottawa to Baltimore round-trip?

    Cheapflights users have booked flights from Ottawa to Baltimore round-trip from C$ 334. Another airline that can offer you cheap pricing is United Airlines. Porter Airlines is priced at 59% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Ottawa to Baltimore (average of C$ 327). Flying from Ottawa to Baltimore in June is currently the most expensive (average of C$ 398). 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

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Alternative routes for Ottawa to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ottawa to Baltimore

Discover the top 2 airlines that operate flights from Ottawa to Baltimore. 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 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 334AverageC$ 382FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 455AverageC$ 1,015FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ottawa to Baltimore?

Cheapflights helps you search for flights from Ottawa to Baltimore via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Baltimore?

Cheapflights helps you find that perfect flight to Baltimore from Ottawa by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ottawa to Baltimore with no change fees?

Need flexible booking options for your flight to Baltimore from Ottawa? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to Baltimore become cheaper?

Yes! Start tracking prices for Ottawa to Baltimore flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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