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 Delta and Alaska Airlines fly from Baltimore to Ontario in about 8h 16m. The time it takes to get you to your destination can typically vary by up to 14h 38m. 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 Frontier, which is currently one of the cheapest options available, starting at $65. United Airlines flights start at $129 while deals on Delta start at $163 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 $448, our data shows the cheapest flight currently is $266. When looking at the most popular route, (Baltimore/Washington - Ontario), you can expect to pay $200 for that flight.

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

Consider Southwest, American Airlines or Delta 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.

$80+ 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.

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Cheapflights Tip: The best prices from Baltimore/Washington to Ontario are usually found in August or November, booked 5 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap 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 December 12, 2025.

Wed 12/317:44 pmBWI - ONT

1 stop16h 09mFrontier

Tue 1/64:04 pmONT - BWI

2 stops26h 52mFrontier

Deal found 12/9

$255

Mon 12/229:30 pmBWI - ONT

1 stop12h 54mFrontier

Wed 12/246:20 pmONT - BWI

1 stop14h 24mFrontier

Deal found 12/11

$305

Tue 12/308:50 pmBWI - ONT

1 stop21h 37mFrontier

Tue 1/64:04 pmONT - BWI

2 stops26h 52mFrontier

Deal found 12/9

$323

Mon 12/299:30 pmBWI - ONT

1 stop12h 54mFrontier

Fri 1/98:31 amONT - BWI

1 stop9h 33mFrontier

Deal found 12/10

$347

Tue 12/305:36 pmBWI - ONT

2 stops33h 23mFrontier

Mon 1/58:14 amONT - BWI

1 stop24h 53mFrontier

Deal found 12/9

$353

Wed 12/317:30 amBWI - ONT

2 stops36h 52mMultiple Airlines

Mon 1/56:20 pmONT - BWI

1 stop12h 07mMultiple Airlines

Deal found 12/9

$355

Wed 12/317:44 pmBWI - ONT

1 stop16h 09mFrontier

Mon 1/58:14 amONT - BWI

1 stop24h 53mFrontier

Deal found 12/9

$356

Wed 12/177:15 amBWI - ONT

1 stop8h 19mDelta

Wed 1/77:30 amONT - BWI

2 stops13h 14mDelta

Deal found 12/9

$366

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 December 12, 2025.

Sat 1/107:00 amBWI - ONT

1 stop8h 16mDelta

Sat 1/247:30 amONT - BWI

2 stops13h 14mDelta

Deal found 12/10

$331

Fri 1/307:14 pmBWI - ONT

1 stop22h 54mAlaska Airlines

Tue 2/1011:53 amONT - BWI

1 stop27h 21mAlaska Airlines

Deal found 12/11

$336

Thu 2/128:55 amBWI - ONT

1 stop10h 45mSouthwest

Sun 2/156:50 amONT - BWI

1 stop9h 25mSouthwest

Deal found 12/11

$382

Tue 4/74:38 pmBWI - ONT

1 stop7h 26mDelta

Sat 4/115:45 pmONT - BWI

1 stop9h 06mDelta

Deal found 12/11

$347

Wed 1/217:14 pmBWI - ONT

1 stop22h 54mAlaska Airlines

Thu 1/296:00 amONT - BWI

1 stop9h 14mAlaska Airlines

Deal found 12/10

$365

Thu 1/87:00 amBWI - ONT

1 stop8h 16mDelta

Wed 1/1410:30 pmONT - BWI

1 stop8h 49mDelta

Deal found 12/11

$347

Mon 1/197:00 amBWI - ONT

1 stop8h 16mDelta

Sat 1/241:10 pmONT - BWI

1 stop7h 34mDelta

Deal found 12/10

$347

Sat 5/27:00 amBWI - ONT

1 stop10h 33mAlaska Airlines

Thu 5/73:33 pmONT - BWI

1 stop10h 49mAlaska Airlines

Deal found 12/11

$387

Thu 1/227:00 amBWI - ONT

1 stop8h 16mDelta

Mon 1/2610:30 pmONT - BWI

1 stop7h 53mDelta

Deal found 12/9

$347

Sat 1/247:14 pmBWI - ONT

1 stop18h 45mAlaska Airlines

Sat 1/314:03 pmONT - BWI

1 stop23h 11mAlaska Airlines

Deal found 12/10

$404

Mon 2/23:00 pmBWI - ONT

2 stops11h 58mDelta

Mon 2/910:30 pmONT - BWI

2 stops12h 23mDelta

Deal found 12/10

$357

Thu 2/127:15 amBWI - ONT

1 stop7h 47mDelta

Tue 2/1710:20 pmONT - BWI

1 stop8h 03mDelta

Deal found 12/11

$393

Last-minute flights from Baltimore to Ontario
Discover last-minute flight deals from Baltimore to Ontario. Data last updated December 12, 2025 and is based on user searches.

Wed 12/317:44 pmBWI - ONT

1 stop16h 09mFrontier

Tue 1/64:04 pmONT - BWI

2 stops26h 52mFrontier

Deal found 12/9

$255

Mon 1/57:00 amBWI - ONT

2 stops35h 09mMultiple Airlines

Fri 1/93:49 pmONT - BWI

1 stop15h 38mMultiple Airlines

Deal found 12/11

$260

Wed 1/79:34 amBWI - ONT

1 stop31h 05mMultiple Airlines

Wed 1/146:49 pmONT - BWI

2 stops13h 58mMultiple Airlines

Deal found 12/11

$205

Thu 1/87:45 pmBWI - ONT

1 stop28h 38mFrontier

Thu 1/157:56 pmONT - BWI

1 stop12h 43mFrontier

Deal found 12/9

$183

Thu 1/87:45 pmBWI - ONT

1 stop28h 38mFrontier

Fri 1/168:32 amONT - BWI

1 stop8h 18mFrontier

Deal found 12/11

$252

Fri 1/99:59 pmBWI - ONT

2 stops19h 27mMultiple Airlines

Mon 1/123:46 pmONT - BWI

1 stop15h 41mMultiple Airlines

Deal found 12/10

$254

Thu 1/1512:42 pmBWI - ONT

1 stop9h 19mFrontier

Sun 1/187:56 pmONT - BWI

1 stop12h 43mFrontier

Deal found 12/9

$217

Thu 1/158:08 pmBWI - ONT

1 stop21h 00mMultiple Airlines

Fri 1/1610:18 pmONT - BWI

2 stops10h 45mMultiple Airlines

Deal found 12/11

$232

Fri 1/166:10 amBWI - ONT

2 stops20h 49mMultiple Airlines

Mon 1/193:23 pmONT - BWI

1 stop16h 04mMultiple Airlines

Deal found 12/10

$257

Thu 1/228:08 pmBWI - ONT

1 stop19h 35mMultiple Airlines

Wed 1/287:15 amONT - BWI

2 stops24h 12mMultiple Airlines

Deal found 12/10

$235

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 December 12, 2025.

Sun 1/257:58 pmBWI - ONT

1 stop19h 45mFrontier

Deal found 12/11

$80

Thu 1/88:07 pmBWI - ONT

2 stops14h 29mFrontier

Deal found 12/10

$84

Mon 1/128:17 pmBWI - ONT

2 stops24h 37mFrontier

Deal found 12/10

$90

Mon 3/911:14 amBWI - ONT

1 stop8h 26mFrontier

Deal found 12/11

$91

Thu 2/57:58 pmBWI - ONT

1 stop19h 45mFrontier

Deal found 12/11

$97

Thu 1/157:12 pmBWI - ONT

2 stops51h 38mFrontier

Deal found 12/11

$99

Sat 2/75:30 amBWI - ONT

2 stops20h 54mFrontier

Deal found 12/10

$100

Mon 2/98:08 pmBWI - ONT

2 stops28h 26mMultiple Airlines

Deal found 12/10

$107

Sun 2/19:55 pmBWI - ONT

2 stops17h 48mFrontier

Deal found 12/11

$109

Wed 1/75:45 amBWI - ONT

2 stops20h 29mFrontier

Deal found 12/10

$117

Find flight deals from Baltimore to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$183 (CheapOair)
One-way from	$80 (Mytrip)
Popular in	March
Cheapest in	August
Average price	$525

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. 7% potential increase in price ($36 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 December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 1/10

7:00 am-12:16 pm

1 stop8h 16m

Ontario

Sat 1/24

7:30 am-11:44 pm

2 stops13h 14m

$331

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Fri 1/30

7:14 pm-3:08 pm

1 stop22h 54m

Ontario

Tue 2/10

11:53 am-6:14 pm

1 stop27h 21m

$336

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Tue 4/7

4:38 pm-9:04 pm

1 stop7h 26m

Ontario

Sat 4/11

5:45 pm-5:51 am

1 stop9h 06m

$347

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Thu 1/8

7:00 am-12:16 pm

1 stop8h 16m

Ontario

Wed 1/14

10:30 pm-10:19 am

1 stop8h 49m

$347

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Mon 1/19

7:00 am-12:16 pm

1 stop8h 16m

Ontario

Sat 1/24

1:10 pm-11:44 pm

1 stop7h 34m

$347

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Thu 1/22

7:00 am-12:16 pm

1 stop8h 16m

Ontario

Mon 1/26

10:30 pm-9:23 am

1 stop7h 53m

$347

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Mon 2/2

3:00 pm-11:58 pm

2 stops11h 58m

Ontario

Mon 2/9

10:30 pm-1:53 pm

2 stops12h 23m

$357

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 1/21

7:14 pm-3:08 pm

1 stop22h 54m

Ontario

Thu 1/29

6:00 am-6:14 pm

1 stop9h 14m

$365

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Thu 2/12

8:55 am-4:40 pm

1 stop10h 45m

Ontario

Sun 2/15

6:50 am-7:15 pm

1 stop9h 25m

$382

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 5/2

7:00 am-2:33 pm

1 stop10h 33m

Ontario

Thu 5/7

3:33 pm-5:22 am

1 stop10h 49m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 23 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 December.

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 5 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 $68). Flying from Baltimore to Ontario in December is currently the most expensive (average of $168). 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. Friday at noon 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

7.9

Good

4,253 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

7.9

Good

4,253 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Delta

7.9

Good

8,008 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

United Airlines

7.4

Good

9,095 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

American Airlines

7.2

Good

11,050 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Frontier

5.8

Fair

3,084 reviews

Southwest

7.9

Good

4,253 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 Delta and Alaska Airlines fly from Baltimore to Ontario in about 8h 16m. The time it takes to get you to your destination can typically vary by up to 14h 38m. 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 Frontier, which is currently one of the cheapest options available, starting at $65. United Airlines flights start at $129 while deals on Delta start at $163 one-way.
What are the cheapest flights from Baltimore to Ontario?
While on average a flight from Baltimore to Ontario is generally $448, our data shows the cheapest flight currently is $266. When looking at the most popular route, (Baltimore/Washington - Ontario), you can expect to pay $200 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 $68). Flying from Baltimore to Ontario in December is currently the most expensive (average of $168). 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

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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$586	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$336	Average$497	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$344	Average$468	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$346	Average$459	FlexibilityNo cancel fee	On-time63%

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$80+ 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 1/25. 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

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3. Compare prices and book

Cheapflights Tip: The best prices from Baltimore/Washington to Ontario are usually found in August or November, booked 5 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap 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 December 12, 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 December 12, 2025.

Find 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 December.

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 December 12, 2025.