How popular is this Baltimore to Ontario flight route?

Flights from Baltimore/Washington to Ontario have been viewed 1 times in the past calendar month.

How long is the flight from Baltimore to Ontario?

Airlines like Southwest and Alaska Airlines fly from Baltimore to Ontario in about 7h 45m. The time it takes to get you to your destination can typically vary by up to 15h 09m. The distance from Baltimore to Ontario is about 2276 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Cheapflights users have booked flights from Baltimore to Ontario round-trip from $188. Other airlines that can offer you cheap pricing are Delta, from $326, and American Airlines, from $336. Frontier is priced at 58% lower than the current average price of a flight leaving 3 months from now.

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

To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $200. United Airlines flights start at $200 while deals on Southwest start at $200 one-way.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

What are the cheapest flights from Baltimore to Ontario?

While on average a flight from Baltimore to Ontario is generally $332, our data shows the cheapest flight currently is $198. When looking at the most popular route, (Baltimore/Washington - Ontario), you can expect to pay $172 for that flight.

What are the most popular airlines that fly from Baltimore to Ontario?

Consider Southwest, Delta or American Airlines when booking your flight. These represent the most popular airlines when flying from Baltimore to Ontario.

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

Most trusted provider : When it comes to deals on Baltimore-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$71+ Cheap Flights from Baltimore to Ontario

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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.

Cheapflights Tip: The best prices from Baltimore/Washington to Ontario are usually found in August or May, booked 57 days in advance, depart on a Friday or Thursday and return on a Thursday

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 October 28, 2025.

Thu 12/410:27 amBWI - ONT

1 stop11h 08mMultiple Airlines

Tue 12/912:30 pmONT - BWI

2 stops32h 54mMultiple Airlines

Deal found 10/27

$176

Wed 12/35:45 amBWI - ONT

1 stop18h 32mMultiple Airlines

Sun 12/72:59 pmONT - BWI

1 stop15h 18mMultiple Airlines

Deal found 10/28

$189

Thu 12/410:27 amBWI - ONT

1 stop11h 08mMultiple Airlines

Mon 12/82:59 pmONT - BWI

1 stop15h 18mMultiple Airlines

Deal found 10/27

$206

Thu 11/139:58 pmBWI - ONT

1 stop12h 31mFrontier

Mon 11/243:21 pmONT - BWI

1 stop15h 58mFrontier

Deal found 10/27

$211

Wed 11/126:24 pmBWI - ONT

1 stop27h 25mMultiple Airlines

Sat 11/156:53 amONT - BWI

2 stops10h 38mMultiple Airlines

Deal found 10/26

$222

Thu 12/189:34 amBWI - ONT

1 stop24h 45mMultiple Airlines

Tue 1/68:00 amONT - BWI

2 stops25h 52mMultiple Airlines

Deal found 10/26

$292

Mon 11/106:00 amBWI - ONT

1 stop9h 51mMultiple Airlines

Tue 11/118:45 amONT - BWI

2 stops25h 10mMultiple Airlines

Deal found 10/27

$293

Sat 11/84:55 pmBWI - ONT

2 stops16h 27mMultiple Airlines

Mon 11/101:46 pmONT - BWI

1 stop17h 38mMultiple Airlines

Deal found 10/26

$298

Best flights from Baltimore to Ontario
Discover carefully curated flight deals from Baltimore to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 28, 2025.

Thu 12/412:35 pmBWI - ONT

1 stop7h 45mSouthwest

Tue 12/911:15 amONT - BWI

1 stop7h 55mSouthwest

Deal found 10/27

$337

Fri 2/67:14 pmBWI - ONT

1 stop22h 54mAlaska Airlines

Mon 2/96:00 amONT - BWI

1 stop9h 14mAlaska Airlines

Deal found 10/27

$367

Fri 1/307:00 amBWI - ONT

1 stop8h 16mDelta

Tue 2/107:30 amONT - BWI

2 stops13h 12mDelta

Deal found 10/26

$396

Fri 1/237:14 pmBWI - ONT

1 stop22h 54mAlaska Airlines

Tue 1/2711:53 amONT - BWI

1 stop27h 21mAlaska Airlines

Deal found 10/26

$367

Wed 11/126:00 amBWI - ONT

1 stop7h 34mDelta

Mon 11/1712:16 pmONT - BWI

1 stop9h 10mDelta

Deal found 10/28

$399

Sat 11/157:38 amBWI - ONT

1 stop10h 39mAlaska Airlines

Thu 12/46:00 amONT - BWI

1 stop9h 16mAlaska Airlines

Deal found 10/26

$367

Thu 12/256:15 amBWI - ONT

2 stops11h 25mSouthwest

Thu 1/16:50 amONT - BWI

2 stops9h 50mSouthwest

Deal found 10/26

$418

Mon 11/101:51 pmBWI - ONT

1 stop8h 51mDelta

Thu 11/1310:25 pmONT - BWI

1 stop9h 45mDelta

Deal found 10/27

$399

Tue 11/116:00 amBWI - ONT

1 stop8h 06mDelta

Tue 11/114:49 pmONT - BWI

2 stops13h 33mDelta

Deal found 10/28

$404

Mon 12/87:00 amBWI - ONT

1 stop31h 19mAlaska Airlines

Wed 12/106:00 amONT - BWI

1 stop9h 16mAlaska Airlines

Deal found 10/26

$419

Last-minute flights from Baltimore to Ontario
Discover last-minute flight deals from Baltimore to Ontario. Data last updated October 28, 2025 and is based on user searches.

Thu 10/309:58 pmBWI - ONT

1 stop12h 31mFrontier

Mon 11/243:21 pmONT - BWI

1 stop15h 58mFrontier

Deal found 10/28

$307

Thu 10/309:58 pmBWI - ONT

1 stop12h 31mFrontier

Mon 11/38:24 amONT - BWI

1 stop7h 34mFrontier

Deal found 10/27

$332

Mon 11/34:55 pmBWI - ONT

2 stops31h 32mMultiple Airlines

Mon 11/101:46 pmONT - BWI

1 stop17h 38mMultiple Airlines

Deal found 10/26

$314

Sat 11/84:55 pmBWI - ONT

2 stops16h 27mMultiple Airlines

Mon 11/101:46 pmONT - BWI

1 stop17h 38mMultiple Airlines

Deal found 10/26

$298

Mon 11/106:00 amBWI - ONT

1 stop9h 51mMultiple Airlines

Tue 11/118:45 amONT - BWI

2 stops25h 10mMultiple Airlines

Deal found 10/27

$293

Wed 11/126:24 pmBWI - ONT

1 stop27h 25mMultiple Airlines

Sat 11/156:53 amONT - BWI

2 stops10h 38mMultiple Airlines

Deal found 10/26

$222

Thu 11/139:58 pmBWI - ONT

1 stop12h 31mFrontier

Mon 11/243:21 pmONT - BWI

1 stop15h 58mFrontier

Deal found 10/28

$211

Fri 11/1410:22 amBWI - ONT

1 stop11h 27mMultiple Airlines

Sun 11/235:06 pmONT - BWI

2 stops27h 10mMultiple Airlines

Deal found 10/28

$331

Fri 11/285:45 amBWI - ONT

1 stop11h 41mMultiple Airlines

Mon 12/15:06 pmONT - BWI

2 stops27h 10mMultiple Airlines

Deal found 10/26

$325

One-way flights from Baltimore to Ontario
Search for one-way flight options from Baltimore to Ontario. Find affordable one-way fares based on user searches. Data last updated October 28, 2025.

Thu 11/139:58 pmBWI - ONT

1 stop12h 31mFrontier

Deal found 10/27

$71

Sat 12/68:30 pmBWI - ONT

1 stop23h 03mMultiple Airlines

Deal found 10/27

$78

Sat 1/319:46 pmBWI - ONT

1 stop23h 15mMultiple Airlines

Deal found 10/27

$84

Thu 12/410:27 amBWI - ONT

1 stop11h 08mMultiple Airlines

Deal found 10/26

$85

Mon 12/88:39 pmBWI - ONT

1 stop17h 48mFrontier

Deal found 10/25

$87

Mon 12/158:39 pmBWI - ONT

1 stop17h 48mFrontier

Deal found 10/28

$93

Sat 12/138:30 pmBWI - ONT

1 stop23h 03mMultiple Airlines

Deal found 10/26

$96

Wed 12/35:45 amBWI - ONT

1 stop18h 32mMultiple Airlines

Deal found 10/28

$97

Fri 2/66:00 amBWI - ONT

2 stops20h 59mFrontier

Deal found 10/28

$99

Wed 1/77:00 amBWI - ONT

2 stops34h 31mFrontier

Deal found 10/28

$100

Wed 12/311:16 amBWI - ONT

2 stops34h 19mFrontier

Deal found 10/27

$101

Cheap flight deals from Baltimore to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$159 (Kiwi.com)
One-way from	$71 (CheapOair)
Popular in	January
Cheapest in	August
Average price	$407

Provider with most accurate pricing for Baltimore/Washington-Ontario flight deals.

Search Deals

Provider most trusted by Cheapflights users for Baltimore/Washington-Ontario flights.

Search Deals

From Baltimore/Washington to Ontario

Search Deals

One-way flight from Baltimore/Washington to Ontario

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($39 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Thu 12/4

12:35 pm-5:20 pm

1 stop7h 45m

Ontario

Tue 12/9

11:15 am-10:10 pm

1 stop7h 55m

$337

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Fri 2/6

7:14 pm-3:08 pm

1 stop22h 54m

Ontario

Mon 2/9

6:00 am-6:14 pm

1 stop9h 14m

$367

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Fri 1/23

7:14 pm-3:08 pm

1 stop22h 54m

Ontario

Tue 1/27

11:53 am-6:14 pm

1 stop27h 21m

$367

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 11/15

7:38 am-3:17 pm

1 stop10h 39m

Ontario

Thu 12/4

6:00 am-6:16 pm

1 stop9h 16m

$367

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Fri 1/30

7:00 am-12:16 pm

1 stop8h 16m

Ontario

Tue 2/10

7:30 am-11:42 pm

2 stops13h 12m

$396

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 11/12

6:00 am-10:34 am

1 stop7h 34m

Ontario

Mon 11/17

12:16 pm-12:26 am

1 stop9h 10m

$399

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Mon 11/10

1:51 pm-7:42 pm

1 stop8h 51m

Ontario

Thu 11/13

10:25 pm-11:10 am

1 stop9h 45m

$399

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Tue 11/11

6:00 am-11:06 am

1 stop8h 06m

Ontario

Tue 11/11

4:49 pm-9:22 am

2 stops13h 33m

$404

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Thu 12/25

6:15 am-2:40 pm

2 stops11h 25m

Ontario

Thu 1/1

6:50 am-7:40 pm

2 stops9h 50m

$418

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Mon 12/8

7:00 am-11:19 am

1 stop31h 19m

Ontario

Wed 12/10

6:00 am-6:16 pm

1 stop9h 16m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 21 results

Compare providers for flights from Baltimore to Ontario

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Ontario in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust 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-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Baltimore-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Baltimore-Ontario flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Baltimore-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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-Ontario 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 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

How far ahead should I book a flight from Baltimore to Ontario?

The price you pay for your flight from Baltimore to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 57 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Baltimore to Ontario (average of $73). Flying from Baltimore to Ontario in December is currently the most expensive (average of $178). 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 ONT?

It’s typically best to fly out from Baltimore to Ontario in the morning. Doing so could potentially save you 36% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Baltimore to Ontario?

Travelers seeking maximum savings on their Baltimore to Ontario flight should consider departing on Saturday at noon when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ontario

See what other customers who have flown with Southwest, Delta, and United Airlines from Baltimore to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,240 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Southwest

8.0

Very good

4,240 reviews

Southwest

8.0

Very good

4,240 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Delta

7.9

Good

7,994 reviews

Southwest

8.0

Very good

4,240 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

United Airlines

7.4

Good

9,001 reviews

Southwest

8.0

Very good

4,240 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

American Airlines

7.2

Good

11,032 reviews

Southwest

8.0

Very good

4,240 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Frontier

5.8

Fair

3,124 reviews

Southwest

8.0

Very good

4,240 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

How popular is this Baltimore to Ontario flight route?
Flights from Baltimore/Washington to Ontario have been viewed 1 times in the past calendar month.
How long is the flight from Baltimore to Ontario?
Airlines like Southwest and Alaska Airlines fly from Baltimore to Ontario in about 7h 45m. The time it takes to get you to your destination can typically vary by up to 15h 09m. The distance from Baltimore to Ontario is about 2276 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Baltimore to Ontario round-trip?
Cheapflights users have booked flights from Baltimore to Ontario round-trip from $188. Other airlines that can offer you cheap pricing are Delta, from $326, and American Airlines, from $336. Frontier is priced at 58% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Baltimore to Ontario one-way?
To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $200. United Airlines flights start at $200 while deals on Southwest start at $200 one-way.
What are the cheapest flights from Baltimore to Ontario?
While on average a flight from Baltimore to Ontario is generally $332, our data shows the cheapest flight currently is $198. When looking at the most popular route, (Baltimore/Washington - Ontario), you can expect to pay $172 for that flight.
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 Ontario?
Currently, January is the cheapest month in which you can book a flight from Baltimore to Ontario (average of $73). Flying from Baltimore to Ontario in December is currently the most expensive (average of $178). 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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Other flights to Ontario

Top 5 airlines flying from Baltimore to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$188	Average$265	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$326	Average$494	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$336	Average$497	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$344	Average$502	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$355	Average$457	FlexibilityNo cancel fee	On-time63%

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$71+ Cheap flights from Baltimore to Ontario (BWI - ONT)

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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Baltimore to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Baltimore/Washington to Ontario are usually found in August or May, booked 57 days in advance, depart on a Friday or Thursday and return on a Thursday

Find flight deals from Baltimore to Ontario

Cheapest flights from Baltimore to OntarioExplore 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 October 28, 2025.

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 October 28, 2025.

Cheap flight deals from Baltimore to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Baltimore to Ontario that are best for you.

Compare providers for flights from Baltimore to Ontario

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 Ontario in October.

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.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to Ontario

How far ahead should I book a flight from Baltimore to Ontario?

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

What is the cheapest time of day to fly from BWI to ONT?

What is the cheapest day to fly from Baltimore to Ontario?

Reviews of airlines servicing Ontario

See what other customers who have flown with Southwest, Delta, and United Airlines from Baltimore to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

How popular is this Baltimore to Ontario flight route?

How long is the flight from Baltimore to Ontario?

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

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

What are the cheapest flights from Baltimore to Ontario?

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

How can I find direct flights from Baltimore to Ontario?

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Baltimore to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Baltimore to Ontario

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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 October 28, 2025.