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Cheap flights from Baltimore to Los Angeles from $104

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 4/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:31 pm - 7:35 am
BWI
-
ONT
18h 04m
1 stop
Frontier Logo
8:06 pm - 8:23 pm
ONT
-
BWI
21h 17m
1 stop
$210Frontier
Tue, May 12 - Tue, May 19
Frontier Logo
3:06 pm - 8:39 pm
BWI
-
ONT
8h 33m
1 stop
Frontier Logo
8:21 am - 10:27 am
ONT
-
BWI
23h 06m
1 stop
$215Frontier
Wed, Apr 15 - Sun, Apr 19
Frontier Logo
5:17 pm - 7:35 am
BWI
-
ONT
17h 18m
1 stop
Frontier Logo
8:06 pm - 8:23 pm
ONT
-
BWI
21h 17m
1 stop
$220Frontier
Wed, May 6 - Sun, May 10
Frontier Logo
3:06 pm - 8:39 pm
BWI
-
ONT
8h 33m
1 stop
Frontier Logo
8:21 am - 10:27 am
ONT
-
BWI
23h 06m
1 stop
$227Frontier
Tue, Apr 14 - Sun, Apr 19
Frontier Logo
4:29 pm - 7:35 am
BWI
-
ONT
18h 06m
1 stop
Frontier Logo
8:06 pm - 8:23 pm
ONT
-
BWI
21h 17m
1 stop
$228Frontier
Tue, May 5 - Thu, May 7
Frontier Logo
5:34 pm - 7:35 am
BWI
-
ONT
17h 01m
1 stop
Frontier Logo
8:06 pm - 8:23 pm
ONT
-
BWI
21h 17m
1 stop
$230Frontier
Sat, May 9 - Wed, May 13
Frontier Logo
5:17 pm - 8:20 am
BWI
-
ONT
18h 03m
1 stop
Frontier Logo
8:06 pm - 8:23 pm
ONT
-
BWI
21h 17m
1 stop
$233Frontier
Fri, May 8 - Mon, May 11
Frontier Logo
5:17 pm - 8:20 am
BWI
-
ONT
18h 03m
1 stop
Frontier Logo
8:06 pm - 8:23 pm
ONT
-
BWI
21h 17m
1 stop
$235Frontier
Fri, May 15 - Mon, May 18
Frontier Logo
5:17 pm - 7:35 am
BWI
-
ONT
17h 18m
1 stop
Frontier Logo
8:06 pm - 8:23 pm
ONT
-
BWI
21h 17m
1 stop
$237Frontier
Wed, May 13 - Sun, May 17
Frontier Logo
11:49 am - 6:45 pm
BWI
-
ONT
9h 56m
1 stop
Frontier Logo
5:18 pm - 9:34 am
ONT
-
BWI
13h 16m
1 stop
$240Frontier
Sat, Apr 4 - Wed, Apr 8

Frontier flights from Baltimore to Ontario

Our best Frontier deals on Baltimore to Ontario flight tickets
Frontier
May 12
BWI4:31 pmBaltimore/Washington
18h 04m
1 stop
ONT7:35 amOntario
May 19
ONT8:06 pmOntario
21h 17m
1 stop
BWI8:23 pmBaltimore/Washington
$210
Frontier
Apr 15
BWI3:06 pmBaltimore/Washington
8h 33m
1 stop
ONT8:39 pmOntario
Apr 19
ONT8:21 amOntario
23h 06m
1 stop
BWI10:27 amBaltimore/Washington
$215
Frontier
May 6
BWI5:17 pmBaltimore/Washington
17h 18m
1 stop
ONT7:35 amOntario
May 10
ONT8:06 pmOntario
21h 17m
1 stop
BWI8:23 pmBaltimore/Washington
$220

United Airlines flights from Baltimore to Ontario

Our best United Airlines deals on Baltimore to Ontario flight tickets
United Airlines
Mar 18
BWI5:04 pmBaltimore/Washington
8h 32m
1 stop
ONT10:36 pmOntario
Mar 24
ONT1:50 pmOntario
6h 22m
1 stop
BWI11:12 pmBaltimore/Washington
$467
United Airlines
Mar 24
BWI4:03 pmBaltimore/Washington
7h 47m
1 stop
ONT8:50 pmOntario
Apr 1
ONT1:34 pmOntario
6h 50m
1 stop
BWI11:24 pmBaltimore/Washington
$521
United Airlines
Mar 18
BWI5:12 pmBaltimore/Washington
8h 06m
1 stop
ONT10:18 pmOntario
Apr 15
ONT1:34 pmOntario
6h 50m
1 stop
BWI11:24 pmBaltimore/Washington
$554

momondo 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, momondo users made 832,500 searches. Data last updated March 17, 2026.
Use the filters below to find and compare flights from Baltimore to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Tue 5/12

4:31 pm-7:35 am

1 stop18h 04m

Ontario

Tue 5/19

8:06 pm-8:23 pm

1 stop21h 17m

$210

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 4/15

3:06 pm-8:39 pm

1 stop8h 33m

Ontario

Sun 4/19

8:21 am-10:27 am

1 stop23h 06m

$215

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 5/6

5:17 pm-7:35 am

1 stop17h 18m

Ontario

Sun 5/10

8:06 pm-8:23 pm

1 stop21h 17m

$220

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Tue 4/14

3:06 pm-8:39 pm

1 stop8h 33m

Ontario

Sun 4/19

8:21 am-10:27 am

1 stop23h 06m

$227

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Tue 5/5

4:29 pm-7:35 am

1 stop18h 06m

Ontario

Thu 5/7

8:06 pm-8:23 pm

1 stop21h 17m

$228

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 5/9

5:34 pm-7:35 am

1 stop17h 01m

Ontario

Wed 5/13

8:06 pm-8:23 pm

1 stop21h 17m

$230

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Fri 5/8

5:17 pm-8:20 am

1 stop18h 03m

Ontario

Mon 5/11

8:06 pm-8:23 pm

1 stop21h 17m

$233

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Fri 5/15

5:17 pm-8:20 am

1 stop18h 03m

Ontario

Mon 5/18

8:06 pm-8:23 pm

1 stop21h 17m

$235

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 5/13

5:17 pm-7:35 am

1 stop17h 18m

Ontario

Sun 5/17

8:06 pm-8:23 pm

1 stop21h 17m

$237
Quickest round-trip

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 4/4

11:49 am-6:45 pm

1 stop9h 56m

Ontario

Wed 4/8

5:18 pm-9:34 am

1 stop13h 16m

$240

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

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

What is the cheapest month to fly to Ontario?

In general, January 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 $369. If you aren’t able to travel during the month of January, then book flights to Ontario from Baltimore during February instead. Flights to Ontario in February, while not as cheap as those in January, still average around $371.

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

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

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $424 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Baltimore for as low as $225 on momondo.

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

There is only 1 cabin class available to choose from on Baltimore/Washington 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 27% 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 March 2026, prices for Baltimore to Ontario flights are approximately 14% 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

$250

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 $250. The best round-trip flight deal from Baltimore to Ontario found on momondo in the last 72 hours is $398.
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

  • 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?

  • 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?

  • What is the most popular airline 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
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $195Free CancellationRating
5.7
3,027 reviews
Search Frontier flights
DeltaPriceFrom $266Free CancellationRating
7.9
8,288 reviews
Search Delta flights
American AirlinesPriceFrom $336Free CancellationRating
7.1
11,468 reviews
Search American Airlines flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
9,431 reviews
Search United Airlines flights
SouthwestPriceFrom $346Free CancellationRating
8.0
4,320 reviews
Search Southwest flights

  • Southwest Flights From Baltimore to Ontario

    Across 5 Southwest flights from Baltimore to Ontario this week, the average price was $442, with the best Southwest deals starting from $346 round-trip. 4,320 users have rated Southwest on momondo, with an average score of 8.0/10.

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.

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