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

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 7h 20m.

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

Las Vegas (LAS) has the shortest average layover time for this route: 1h 05m.

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

Frontier is the most popular carrier 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 55% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Houston (IAH) was the most common stop: 38% of momondo users choosing 1-stop flights on this route connected there.

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 October 2026, there are 5 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.

$99 Cheap Flights from Baltimore to Ontario in 2026/27

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9:12 pm - 10:42 amBWI Baltimore/Washington-ONT Ontario

16h 30m2 stops Atlanta Hartsfield-Jackson Denver Intl

6:25 am - 11:08 amONT Ontario-BWI Baltimore/Washington

25h 43m2 stops Denver Intl Dallas/Fort Worth

$170Frontier

Fri, Nov 13 - Mon, Nov 16

9:12 pm - 10:42 amBWI Baltimore/Washington-ONT Ontario

16h 30m2 stops Atlanta Hartsfield-Jackson Denver Intl

11:52 am - 11:08 amONT Ontario-BWI Baltimore/Washington

20h 16m2 stops Denver Intl Dallas/Fort Worth

$207Frontier

Fri, Oct 30 - Tue, Nov 3

7:02 am - 1:16 pmBWI Baltimore/Washington-ONT Ontario

9h 14m1 stop Seattle/Tacoma Intl

8:03 pm - 11:08 amONT Ontario-BWI Baltimore/Washington

12h 05m1 stop Dallas/Fort Worth

$329Multiple Airlines

Tue, Oct 27 - Mon, Nov 2

7:02 am - 3:13 pmBWI Baltimore/Washington-ONT Ontario

11h 11m1 stop Seattle/Tacoma Intl

8:03 pm - 11:08 amONT Ontario-BWI Baltimore/Washington

12h 05m1 stop Dallas/Fort Worth

$329Multiple Airlines

Sat, Nov 14 - Mon, Nov 16

4:30 pm - 9:40 pmBWI Baltimore/Washington-ONT Ontario

8h 10m1 stop Houston George Bush Intcntl

6:00 am - 5:26 pmONT Ontario-BWI Baltimore/Washington

8h 26m1 stop San Francisco

$380United Airlines

Mon, Nov 2 - Tue, Nov 3

6:20 am - 10:50 amBWI Baltimore/Washington-ONT Ontario

7h 30m1 stop Phoenix Sky Harbor Intl

5:50 am - 4:00 pmONT Ontario-BWI Baltimore/Washington

7h 10m1 stop Nashville Intl

$385Southwest

Thu, Dec 17 - Sat, Jan 16

9:45 am - 2:45 pmBWI Baltimore/Washington-ONT Ontario

8h 00m1 stop Houston Hobby

12:40 pm - 12:10 amONT Ontario-BWI Baltimore/Washington

8h 30m1 stop Denver Intl

$385Southwest

Wed, Oct 21 - Thu, Oct 29

11:55 am - 6:44 pmBWI Baltimore/Washington-ONT Ontario

9h 49m1 stop Dallas/Fort Worth

12:43 pm - 10:54 pmONT Ontario-BWI Baltimore/Washington

7h 11m1 stop Dallas/Fort Worth

$385American Airlines

Sat, Oct 24 - Tue, Oct 27

5:40 pm - 10:57 pmBWI Baltimore/Washington-ONT Ontario

8h 17m1 stop Dallas/Fort Worth

6:00 am - 3:54 pmONT Ontario-BWI Baltimore/Washington

6h 54m1 stop Dallas/Fort Worth

$385American Airlines

Sat, Nov 14 - Tue, Nov 17

3:04 pm - 9:59 pmBWI Baltimore/Washington-ONT Ontario

9h 55m1 stop Houston George Bush Intcntl

6:00 am - 4:27 pmONT Ontario-BWI Baltimore/Washington

7h 27m1 stop Houston George Bush Intcntl

$385United Airlines

Wed, Oct 21 - Sat, Oct 24

Cheap last minute flights

Enter your travel dates to find the best prices.

12:45 pm - 6:16 pmBWI Baltimore/Washington-ONT Ontario

8h 31m1 stop Dallas/Fort Worth

12:01 pm - 11:08 amONT Ontario-BWI Baltimore/Washington

20h 07m2 stops San Francisco Dallas/Fort Worth

$355Frontier

Wed, Oct 7 - Mon, Oct 26

1:29 pm - 6:39 pmBWI Baltimore/Washington-ONT Ontario

8h 10m1 stop Dallas/Fort Worth

8:03 pm - 10:52 amONT Ontario-BWI Baltimore/Washington

11h 49m1 stop Dallas/Fort Worth

$370Frontier

Sun, Oct 4 - Fri, Nov 6

12:45 pm - 6:16 pmBWI Baltimore/Washington-ONT Ontario

8h 31m1 stop Dallas/Fort Worth

6:56 pm - 5:12 pmONT Ontario-BWI Baltimore/Washington

19h 16m1 stop Seattle/Tacoma Intl

$491Multiple Airlines

Wed, Oct 7 - Mon, Oct 26

4:04 pm - 10:40 pmBWI Baltimore/Washington-ONT Ontario

9h 36m1 stop Dallas/Fort Worth

11:59 pm - 11:05 amONT Ontario-BWI Baltimore/Washington

8h 06m1 stop Dallas/Fort Worth

$493American Airlines

Tue, Oct 6 - Tue, Oct 13

4:04 pm - 10:40 pmBWI Baltimore/Washington-ONT Ontario

9h 36m1 stop Dallas/Fort Worth

10:25 am - 10:54 pmONT Ontario-BWI Baltimore/Washington

9h 29m1 stop Dallas/Fort Worth

$493American Airlines

Tue, Oct 6 - Wed, Oct 28

5:00 pm - 10:24 pmBWI Baltimore/Washington-ONT Ontario

8h 24m1 stop Atlanta Hartsfield-Jackson

12:16 pm - 12:51 amONT Ontario-BWI Baltimore/Washington

9h 35m1 stop Atlanta Hartsfield-Jackson

$506Delta

Mon, Oct 5 - Sat, Oct 24

6:00 pm - 10:05 pmBWI Baltimore/Washington-ONT Ontario

7h 05m1 stop Phoenix Sky Harbor Intl

6:50 am - 6:25 pmONT Ontario-BWI Baltimore/Washington

8h 35m2 stops Denver Intl Birmingham

$511Southwest

Tue, Oct 6 - Wed, Oct 28

12:45 pm - 6:16 pmBWI Baltimore/Washington-ONT Ontario

8h 31m1 stop Dallas/Fort Worth

6:02 am - 5:20 amONT Ontario-BWI Baltimore/Washington

20h 18m1 stop Seattle/Tacoma Intl

$524Multiple Airlines

Wed, Oct 7 - Sun, Oct 11

9:45 am - 3:35 pmBWI Baltimore/Washington-ONT Ontario

8h 50m1 stop Phoenix Sky Harbor Intl

7:10 pm - 5:45 amONT Ontario-BWI Baltimore/Washington

7h 35m1 stop Sacramento Intl

$627Southwest

Tue, Oct 6 - Tue, Oct 6

2:11 pm - 8:25 pmBWI Baltimore/Washington-ONT Ontario

9h 14m1 stop Atlanta Hartsfield-Jackson

7:07 am - 5:27 pmONT Ontario-BWI Baltimore/Washington

7h 20m1 stop Atlanta Hartsfield-Jackson

$627Delta

Tue, Oct 6 - Fri, Oct 9

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Frontier flights from Baltimore to Ontario

Our best Frontier deals on Baltimore to Ontario flight tickets

Frontier

Nov 13

BWI9:12 pmBaltimore/Washington

16h 30m

2 stops

ONT10:42 amOntario

Nov 16

ONT6:25 amOntario

25h 43m

2 stops

BWI11:08 amBaltimore/Washington

$170

Frontier

Oct 30

BWI9:12 pmBaltimore/Washington

16h 30m

2 stops

ONT10:42 amOntario

Nov 3

ONT11:52 amOntario

20h 16m

2 stops

BWI11:08 amBaltimore/Washington

$207

Frontier

Nov 13

BWI6:28 pmBaltimore/Washington

19h 14m

2 stops

ONT10:42 amOntario

Nov 16

ONT8:03 pmOntario

12h 05m

1 stop

BWI11:08 amBaltimore/Washington

$222

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Fri 11/13

9:12 pm-10:42 am

2 stops16h 30m

Ontario

Mon 11/16

6:25 am-11:08 am

2 stops25h 43m

$170

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Fri 10/30

9:12 pm-10:42 am

2 stops16h 30m

Ontario

Tue 11/3

11:52 am-11:08 am

2 stops20h 16m

$207

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Tue 10/27

7:02 am-1:16 pm

1 stop9h 14m

Ontario

Mon 11/2

8:03 pm-11:08 am

1 stop12h 05m

$329

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Sat 11/14

7:02 am-3:13 pm

1 stop11h 11m

Ontario

Mon 11/16

8:03 pm-11:08 am

1 stop12h 05m

$329

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Mon 11/2

4:30 pm-9:40 pm

1 stop8h 10m

Ontario

Tue 11/3

6:00 am-5:26 pm

1 stop8h 26m

$380

Quickest round-trip

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Thu 12/17

6:20 am-10:50 am

1 stop7h 30m

Ontario

Sat 1/16

5:50 am-4:00 pm

1 stop7h 10m

$385

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Wed 10/21

9:45 am-2:45 pm

1 stop8h 00m

Ontario

Thu 10/29

12:40 pm-12:10 am

1 stop8h 30m

$385

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Sat 10/24

11:55 am-6:44 pm

1 stop9h 49m

Ontario

Tue 10/27

12:43 pm-10:54 pm

1 stop7h 11m

$385

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Sat 11/14

5:40 pm-10:57 pm

1 stop8h 17m

Ontario

Tue 11/17

6:00 am-3:54 pm

1 stop6h 54m

$385

BaltimoreOntario

BWI Baltimore/Washington - ONT Ontario

BWIONT

Baltimore/Washington

Wed 10/21

3:04 pm-9:59 pm

1 stop9h 55m

Ontario

Sat 10/24

6:00 am-4:27 pm

1 stop7h 27m

$385

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

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 $388 to $456.
The lowest price recently found on this route was $170.

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?

You could potentially save up to 20% on your flight if you consider stops on a Baltimore to Ontario flight.

How have Baltimore to Ontario flight prices changed over time?

As of October 2026, prices for Baltimore to Ontario flights are approximately 7% cheaper 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	$99
Fastest flight time	7h 52m
Direct flights	None

The best one-way flight to Ontario from Baltimore in the past 72 hours is $99. The best round-trip flight deal from Baltimore to Ontario found on momondo in the last 72 hours is $170.

The fastest flight from Baltimore to Ontario takes 7h 52m

There are no direct flights from Baltimore to Ontario. There are no popular flight routes from Baltimore to Ontario.

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 7h 52m.
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 October 2026, there are 5 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 17.65% of the total bookings. Other popular models include Boeing 737 MAX 8 with 14.71%, Airbus A321neo with 11.76%, and Airbus A321-100/200 with 5.88%.
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 58% of all bookings. The subsequent popular airlines are Delta at 13%, American Airlines at 11%, and United Airlines at 9%.

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 8,630 reviews	Search Delta flights
Frontier	PriceFrom $230	Free Cancellation	Rating 5.6 2,565 reviews	Search Frontier flights
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.4 10,280 reviews	Search United Airlines flights
Southwest	PriceFrom $352	Free Cancellation	Rating 7.9 4,215 reviews	Search Southwest flights
American Airlines	PriceFrom $466	Free Cancellation	Rating 7.0 12,127 reviews	Search American Airlines flights

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

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Cheap flights from Baltimore to Los Angeles from $99

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 10/30. 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

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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?

When to book flights from Baltimore to Ontario

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

Best Price Found

Fastest flight time

Direct flights

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

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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Cabin classes currently available on flights to Los Angeles

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

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