How many flights depart from Baltimore to Ontario on average per week?

As of June 2026, 4 flights take off from Baltimore and land in Ontario each week. The most common flight departure day for this route is Mon, with 25% of weekly flights taking off on this day.

Which airport is the most popular layover for flights between Baltimore and Ontario?

Atlanta (ATL) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Baltimore/Washington to Ontario?

Delta, United Airlines, and Southwest are the most popular carriers operating from Baltimore/Washington to Ontario

What airlines fly to Ontario?

United Airlines, Southwest and American Airlines are the top three most popular airlines that fly to Ontario from Baltimore according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Baltimore to Ontario?

Atlanta (ATL) has the shortest average layover time for this route: 1h 44m.

Which layover airport offers the lowest fares from Baltimore to Ontario?

Flights via Denver (DEN) offer the lowest average round-trip price of $236.

Which layover airport has the shortest travel time from Baltimore to Ontario?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 7h 49m.

When did momondo last update prices for flights from Baltimore/Washington Airport to Ontario Airport?

Prices for flights from Baltimore/Washington Airport to Ontario Airport refresh daily.

How many operators does momondo search for flights from Baltimore/Washington Airport to Ontario Airport?

As of June 2026, there are 4 operators available to choose from for flights from Baltimore/Washington Airport to Ontario Airport.

How old do you have to be to fly from Baltimore/Washington Airport to Ontario Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Baltimore/Washington Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$118 Cheap Flights from Baltimore to Ontario in 2026

Q: What is the typical price of a round-trip flight between Baltimore and Ontario?

Prices are currently low for flights on this route. Typical prices usually range from $471 to $553. The lowest price recently found on this route was $240.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Baltimore to Los Angeles

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:24 pm - 7:01 pm

BWI

ONT

8h 37m

1 stop

9:33 am - 8:37 pm

ONT

BWI

8h 04m

1 stop

$240Frontier

Wed, Aug 19 - Thu, Aug 20

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

9:33 am - 8:37 pm

ONT

BWI

8h 04m

1 stop

$241Frontier

Wed, Jul 15 - Thu, Aug 27

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

9:32 am - 8:36 pm

ONT

BWI

8h 04m

1 stop

$242Frontier

Thu, Jul 23 - Thu, Jul 30

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

9:36 am - 8:34 pm

ONT

BWI

7h 58m

1 stop

$246Frontier

Thu, Jul 30 - Thu, Aug 6

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

9:36 am - 8:39 pm

ONT

BWI

8h 03m

1 stop

$247Frontier

Wed, Jul 29 - Mon, Aug 10

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

9:36 am - 8:39 pm

ONT

BWI

8h 03m

1 stop

$248Frontier

Tue, Aug 4 - Wed, Aug 12

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

9:36 am - 8:39 pm

ONT

BWI

8h 03m

1 stop

$249Frontier

Sat, Aug 1 - Sat, Aug 8

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

9:36 am - 8:39 pm

ONT

BWI

8h 03m

1 stop

$250Frontier

Wed, Aug 5 - Wed, Aug 12

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

9:32 am - 8:36 pm

ONT

BWI

8h 04m

1 stop

$251Frontier

Thu, Jul 23 - Tue, Aug 4

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

9:32 am - 8:36 pm

ONT

BWI

8h 04m

1 stop

$252Frontier

Sat, Jul 25 - Sat, Aug 1

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Frontier flights from Baltimore to Ontario

Our best Frontier deals on Baltimore to Ontario flight tickets

Frontier

Aug 19

BWI1:24 pmBaltimore/Washington

8h 37m

1 stop

ONT7:01 pmOntario

Aug 20

ONT9:33 amOntario

8h 04m

1 stop

BWI8:37 pmBaltimore/Washington

$240

Frontier

Jul 15

BWI4:44 pmBaltimore/Washington

17h 48m

1 stop

ONT7:32 amOntario

Aug 27

ONT9:33 amOntario

8h 04m

1 stop

BWI8:37 pmBaltimore/Washington

$241

Frontier

Jul 23

BWI4:44 pmBaltimore/Washington

17h 48m

1 stop

ONT7:32 amOntario

Jul 30

ONT9:32 amOntario

8h 04m

1 stop

BWI8:36 pmBaltimore/Washington

$242

Southwest flights from Baltimore to Ontario

Our best Southwest deals on Baltimore to Ontario flight tickets

Southwest

Jul 29

BWI9:50 amBaltimore/Washington

5h 15m

ONT12:05 pmOntario

Aug 5

ONT8:35 amOntario

8h 35m

2 stops

BWI8:10 pmBaltimore/Washington

$346

Southwest

Aug 26

BWI8:10 amBaltimore/Washington

13h 20m

2 stops

ONT6:30 pmOntario

Aug 29

ONT5:40 amOntario

8h 05m

2 stops

BWI4:45 pmBaltimore/Washington

$349

Southwest

Jul 21

BWI9:50 amBaltimore/Washington

5h 15m

ONT12:05 pmOntario

Aug 5

ONT7:45 amOntario

9h 40m

1 stop

BWI8:25 pmBaltimore/Washington

$357

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 8/19

1:24 pm-7:01 pm

1 stop8h 37m

Ontario

Thu 8/20

9:33 am-8:37 pm

1 stop8h 04m

$240

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 7/15

4:44 pm-7:32 am

1 stop17h 48m

Ontario

Thu 8/27

9:33 am-8:37 pm

1 stop8h 04m

$241

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Thu 7/23

4:44 pm-7:32 am

1 stop17h 48m

Ontario

Thu 7/30

9:32 am-8:36 pm

1 stop8h 04m

$242

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Thu 7/30

4:44 pm-7:32 am

1 stop17h 48m

Ontario

Thu 8/6

9:36 am-8:34 pm

1 stop7h 58m

$246

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 7/29

4:44 pm-7:32 am

1 stop17h 48m

Ontario

Mon 8/10

9:36 am-8:39 pm

1 stop8h 03m

$247

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Tue 8/4

4:44 pm-7:32 am

1 stop17h 48m

Ontario

Wed 8/12

9:36 am-8:39 pm

1 stop8h 03m

$248

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 8/1

4:44 pm-7:32 am

1 stop17h 48m

Ontario

Sat 8/8

9:36 am-8:39 pm

1 stop8h 03m

$249

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 8/5

4:44 pm-7:32 am

1 stop17h 48m

Ontario

Wed 8/12

9:36 am-8:39 pm

1 stop8h 03m

$250

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Thu 7/23

4:44 pm-7:32 am

1 stop17h 48m

Ontario

Tue 8/4

9:32 am-8:36 pm

1 stop8h 04m

$251

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 7/25

4:44 pm-7:32 am

1 stop17h 48m

Ontario

Sat 8/1

9:32 am-8:36 pm

1 stop8h 04m

$252

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Baltimore to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the typical price of a round-trip flight between Baltimore and Ontario?

What is the cheapest month to fly to Ontario?

In general, February is the cheapest month to fly from Baltimore to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $371. If you aren’t able to travel during the month of February, then book flights to Ontario from Baltimore during November instead. Flights to Ontario in November, while not as cheap as those in February, still average around $381.

What is the cheapest Baltimore/Washington to Ontario flight route?

Fly from Baltimore/Washington to Ontario for the best Baltimore/Washington - Ontario flight prices

What cabin class options are available on Baltimore to Ontario flights?

There is only 1 cabin class available to choose from on Baltimore to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Baltimore to Ontario flights?

No. A direct flight is the cheapest option for a flight between Baltimore to Ontario.

How have Baltimore to Ontario flight prices changed over time?

As of June 2026, prices for Baltimore to Ontario flights are approximately 86% more expensive when compared to flights at the same time last year.

When to book flights from Baltimore to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Baltimore to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Baltimore to Ontario (BWI to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Baltimore to Ontario

Best Price Found	$248
Fastest flight time	5h 15m
Direct flights	Every day
Airports in Ontario	1 airport

The best one-way flight to Ontario from Baltimore in the past 72 hours is $248. The best round-trip flight deal from Baltimore to Ontario found on momondo in the last 72 hours is $490.

The fastest flight from Baltimore to Ontario takes 5h 15m

Direct flights go from Baltimore to Ontario every day.

There is 1 airport in Ontario. From Baltimore there are direct flights to Ontario (ONT).

Search flight deals

Frequently asked questions about flying from Baltimore to Ontario

How far is Baltimore/Washington to Ontario by plane?
Ontario is 2281.3 mi away from Baltimore/Washington. By plane, this route typically takes 5h 15m.
When did momondo last update prices for flights from Baltimore/Washington Airport to Ontario Airport?
Prices for flights from Baltimore/Washington Airport to Ontario Airport refresh daily.
How many operators does momondo search for flights from Baltimore/Washington Airport to Ontario Airport?
As of June 2026, there are 4 operators available to choose from for flights from Baltimore/Washington Airport to Ontario Airport.
How old do you have to be to fly from Baltimore/Washington Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Baltimore/Washington Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Baltimore to Ontario?
Based on momondo bookings for flights between Baltimore and Ontario, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 31.67% of the total bookings. Other popular models include Boeing 737 MAX 8 with 20.83%, Boeing 737 MAX 9 with 15.83%, and Boeing 757-300 with 6.67%.
What is the most popular airline from Baltimore to Ontario?
momondo data reveals that the most frequently booked airline on the route from Baltimore to Ontario is Southwest, representing 66% of all bookings. The subsequent popular airlines are Delta at 13%, American Airlines at 12%, and United Airlines at 8%.

Best airlines flying from Baltimore to Ontario

Compare and see reviews for airlines that fly from Baltimore to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $192	Free Cancellation	Rating 7.8 8,453 reviews	Search Delta flights
United Airlines	PriceFrom $222	Free Cancellation	Rating 7.4 9,893 reviews	Search United Airlines flights
Southwest	PriceFrom $346	Free Cancellation	Rating 7.9 4,245 reviews	Search Southwest flights
American Airlines	PriceFrom $460	Free Cancellation	Rating 7.1 11,769 reviews	Search American Airlines flights

Southwest Flights From Baltimore to Ontario
Across 4 Southwest flights from Baltimore to Ontario this week, the average price was $467, with the best Southwest deals starting from $346 round-trip. 4,246 users have rated Southwest on momondo, with an average score of 7.9/10.

Why use momondo?

Why should I use momondo to find a flight deal from Baltimore to Ontario?

It is quick and easy to find Baltimore to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Can I find flights from Baltimore to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Baltimore to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Baltimore to Ontario?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Baltimore to Ontario.

I’m not ready to book a flight from Baltimore to Ontario right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Baltimore to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Baltimore to Los Angeles from $118

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Baltimore to Los Angeles departing on 8/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Baltimore to Ontario

Our best Frontier deals on Baltimore to Ontario flight tickets

Southwest flights from Baltimore to Ontario

Our best Southwest deals on Baltimore to Ontario flight tickets

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

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How to get the cheapest flight ticket from Baltimore to Ontario

What is the typical price of a round-trip flight between Baltimore and Ontario?

What is the cheapest month to fly to Ontario?

What is the cheapest Baltimore/Washington to Ontario flight route?

What cabin class options are available on Baltimore to Ontario flights?

Can stopping save me money on Baltimore to Ontario flights?

How have Baltimore to Ontario flight prices changed over time?

What is the cheapest airline that flies from Baltimore/Washington to Ontario?

What airlines fly to Ontario?

Which airport is the most popular layover for flights between Baltimore and Ontario?

Which layover airport offers the lowest fares from Baltimore to Ontario?

Which layover airport has the shortest travel time from Baltimore to Ontario?

Which layover airport has the shortest connection time from Baltimore to Ontario?

How many flights depart from Baltimore to Ontario on average per week?

When to book flights from Baltimore to Ontario

Cheap Baltimore to Ontario (BWI to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Baltimore to Ontario

Best Price Found

Fastest flight time

Direct flights

Airports in Ontario

Frequently asked questions about flying from Baltimore to Ontario

Best airlines flying from Baltimore to Ontario

Compare and see reviews for airlines that fly from Baltimore to Ontario with momondo

Southwest Flights From Baltimore to Ontario

Why use momondo?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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