HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$100+ Cheap flights from Baltimore (BWI) to Ontario

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — YYZ
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baltimore to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Baltimore to Ontario

Keep the following information in mind while searching for Baltimore to Ontario flight deals. Data was last updated July 3, 2025.

Round-trip from

$264
(Mytrip)

One-way from

$100
(Kiwi.com)

Popular in

February

Cheapest in

June

Average price

$287
From Baltimore/Washington to Ontario
Search Deals
One-way flight from Baltimore/Washington to Ontario
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Baltimore to Ontario

Cheapest flights from Baltimore to Ontario
Explore the most affordable flight options available from Baltimore to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/126:25 amBWI - YYZ
1 stop7h 40mMultiple Airlines
Tue 8/196:30 amYYZ - BWI
1 stop8h 16mMultiple Airlines
Deal found 7/1$264
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 7/317:10 amBWI - YTZ
1 stop6h 54mMultiple Airlines
Wed 8/67:55 amYTZ - BWI
1 stop9h 51mMultiple Airlines
Deal found 7/2$288
This Delta deal was found by Cheapflights users on 7/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/231:52 pmBWI - YYZ
1 stop10h 07mDelta
Sat 7/261:20 pmYYZ - BWI
1 stop9h 31mDelta
Deal found 7/3$322
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/189:57 amBWI - YUL
2 stops12h 18mMultiple Airlines
Sun 9/214:45 pmYUL - BWI
3 stops29h 23mMultiple Airlines
Deal found 7/2$324
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/228:00 amBWI - YUL
1 stop9h 50mDelta
Fri 8/297:00 amYUL - BWI
1 stop8h 34mDelta
Deal found 7/1$363
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 7/318:00 amBWI - YOW
1 stop9h 06mMultiple Airlines
Wed 8/64:25 pmYOW - BWI
1 stop7h 24mMultiple Airlines
Deal found 7/2$385
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/155:45 amBWI - YXU
2 stops23h 29mMultiple Airlines
Fri 8/226:00 amYXU - BWI
2 stops24h 54mMultiple Airlines
Deal found 7/1$479
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/296:25 amBWI - YQT
2 stops15h 50mMultiple Airlines
Tue 8/52:20 pmYQT - BWI
2 stops17h 10mMultiple Airlines
Deal found 7/1$529
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/306:40 pmBWI - YQG
3 stops24h 15mMultiple Airlines
Wed 8/67:45 pmYQG - BWI
2 stops18h 00mMultiple Airlines
Deal found 7/2$616
This United Airlines deal was found by Cheapflights users on 7/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/156:15 amBWI - YXU
2 stops8h 47mUnited Airlines
Fri 8/226:15 amYXU - BWI
2 stops7h 33mUnited Airlines
Deal found 7/1$862
This United Airlines deal was found by Cheapflights users on 7/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2910:59 amBWI - YQT
3 stops11h 49mUnited Airlines
Tue 8/511:10 amYQT - BWI
3 stops10h 32mUnited Airlines
Deal found 7/1$1,685

Cheapflights Fare Finder

Customize your flight search to find flights from Baltimore to Ontario 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 July 3, 2025.
Use the filters below to find and compare flights from Baltimore to Ontario that are best for you.

Fly from

Baltimore

Fly to

Ontario

Route

Depart

Return

Price

BaltimoreToronto

BWI - YYZ

BWIYYZ

Baltimore/Washington

Tue 8/12

6:25 am-2:05 pm

1 stop7h 40m

Toronto Pearson Intl

Tue 8/19

6:30 am-2:46 pm

1 stop8h 16m

$264

BaltimoreToronto

BWI - YTZ

BWIYTZ

Baltimore/Washington

Thu 7/31

7:10 am-2:04 pm

1 stop6h 54m

Toronto Island

Wed 8/6

7:55 am-5:46 pm

1 stop9h 51m

$288

BaltimoreToronto

BWI - YYZ

BWIYYZ

Baltimore/Washington

Wed 7/23

5:35 am-12:05 pm

1 stop6h 30m

Toronto Pearson Intl

Thu 7/24

6:25 pm-12:54 am

1 stop6h 29m

$322

BaltimoreMontreal

BWI - YUL

BWIYUL

Baltimore/Washington

Thu 9/18

9:57 am-10:15 pm

2 stops12h 18m

Montreal Pierre Elliott Trudeau Intl

Sun 9/21

4:45 pm-10:08 pm

3 stops29h 23m

$324

BaltimoreMontreal

BWI - YUL

BWIYUL

Baltimore/Washington

Fri 8/22

8:00 am-5:50 pm

1 stop9h 50m

Montreal Pierre Elliott Trudeau Intl

Fri 8/29

7:00 am-3:34 pm

1 stop8h 34m

$363

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 7/31

8:00 am-5:06 pm

1 stop9h 06m

Ottawa

Wed 8/6

4:25 pm-11:49 pm

1 stop7h 24m

$385

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Fri 8/15

5:45 am-5:14 am

2 stops23h 29m

London

Fri 8/22

6:00 am-6:54 am

2 stops24h 54m

$479

BaltimoreThunder Bay

BWI - YQT

BWIYQT

Baltimore/Washington

Tue 7/29

6:25 am-10:15 pm

2 stops15h 50m

Thunder Bay

Tue 8/5

2:20 pm-7:30 am

2 stops17h 10m

$529

BaltimoreWindsor

BWI - YQG

BWIYQG

Baltimore/Washington

Wed 7/30

6:40 pm-6:55 pm

3 stops24h 15m

Windsor

Wed 8/6

7:45 pm-1:45 pm

2 stops18h 00m

$616

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Fri 8/15

6:15 am-3:02 pm

2 stops8h 47m

London

Fri 8/22

6:15 am-1:48 pm

2 stops7h 33m

$862

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 24 results
1
2
3

Best time to book a flight from Baltimore to Ontario

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

What is the cheapest month to book a flight from Baltimore to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Baltimore to Region of Ontario (average of $243). Flying from Baltimore to Region of Ontario in August is currently the most expensive (average of $348). 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 ON?

Find hourly flight availability from Baltimore to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Baltimore to Region of Ontario as you normally would.

How much does it cost to fly round-trip from Baltimore to Region of Ontario?

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated July 3, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Baltimore to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,917 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Sun Country Air
6.9
Okay
339 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

  • What airport do you fly from for flights from Baltimore to Ontario?

    Baltimore/Washington (BWI) is the airport you will fly out of if you book a flight from Baltimore to Ontario. It is only a 8.5 mi journey to Baltimore/Washington (BWI) from Baltimore’s city center.

  • What are the cheapest airlines to fly from Baltimore to Region of Ontario one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $133. Sun Country Air flights start at $163 while deals on American Airlines start at $175 one-way.

  • What are the most popular routes from Baltimore to Region of Ontario?

    Most travelers choose Baltimore/Washington - Toronto Pearson Intl, Baltimore/Washington - Montreal Pierre Elliott Trudeau Intl or Baltimore/Washington - Toronto Island when deciding on the best route from Baltimore to Region of Ontario.

  • What are the cheapest flights from Baltimore to Region of Ontario?

    On average you can expect to pay $1,406 for a flight from Baltimore to Region of Ontario. The cheapest flight overall is $872 while the most popular route, (Baltimore/Washington - Toronto Pearson Intl) is currently priced at $277.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Baltimore to Ontario 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 Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Baltimore to Region of Ontario (average of $243). Flying from Baltimore to Region of Ontario in August is currently the most expensive (average of $348). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Baltimore to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Pearson Intl flights
Reagan-National to Pearson Intl flights
Dulles Intl to Vancouver Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Dulles Intl to Calgary flights
Dulles Intl to Toronto Island flights
Baltimore to Vancouver Intl flights
Baltimore to Pearson Intl flights
Philadelphia to Pearson Intl flights
Philadelphia to Pierre Elliott Trudeau Intl flights
Reagan-National to Vancouver Intl flights
Baltimore to Pierre Elliott Trudeau Intl flights
Philadelphia to Vancouver Intl flights
Baltimore to Calgary flights
Reagan-National to Calgary flights
Baltimore to Toronto Island flights
Reagan-National to Toronto Island flights
Dulles Intl to Québec City flights
Reagan-National to St. John's flights
Philadelphia to Calgary flights
Philadelphia to Toronto Island flights
Reagan-National to Québec City flights
Dulles Intl to St. John's flights
Philadelphia to Halifax flights
Baltimore to St. John's flights
Dulles Intl to Ottawa flights
Dulles Intl to Halifax flights
Reagan-National to Halifax flights
Dulles Intl to Abbotsford flights
Reagan-National to Ottawa flights
Baltimore to Québec City flights
Philadelphia to Québec City flights
Baltimore to Halifax flights
Dulles Intl to Winnipeg flights
Baltimore to Ottawa flights
Dulles Intl to Edmonton flights
Baltimore to Winnipeg flights
Baltimore to Abbotsford flights
Reagan-National to Winnipeg flights
Dulles Intl to Hamilton flights
Baltimore to Edmonton flights
Dulles Intl to Saskatoon flights
Dulles Intl to Charlottetown flights
Reagan-National to Edmonton flights
Philadelphia to Winnipeg flights
Reagan-National to Charlottetown flights
Philadelphia to St. John's flights
Philadelphia to Charlottetown flights
Reagan-National to Abbotsford flights

Top 5 airlines flying from Baltimore to Ontario

Discover the top 5 airlines that operate flights from Baltimore to Ontario. 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$108Average$266FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$187Average$520FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$187Average$323FlexibilityNo cancel feeOn-time69%
DeltaCheapest$242Average$326FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$330Average$439FlexibilityNo cancel feeOn-time60%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.