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Cheap flights from Baltimore to Los Angeles from $106

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 5/16. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Baltimore to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:29 pm - 7:35 am
BWI
-
ONT
18h 06m
1 stop
Frontier Logo
6:43 pm - 12:34 pm
ONT
-
BWI
14h 51m
1 stop
$210Frontier
Tue, Jun 2 - Tue, Jun 9
Frontier Logo
5:17 pm - 7:48 am
BWI
-
ONT
17h 31m
1 stop
Frontier Logo
6:43 pm - 12:34 pm
ONT
-
BWI
14h 51m
1 stop
$215Frontier
Fri, Jun 5 - Tue, Jun 9
Frontier Logo
4:29 pm - 7:08 am
BWI
-
ONT
17h 39m
1 stop
Frontier Logo
8:06 pm - 12:34 pm
ONT
-
BWI
13h 28m
1 stop
$220Frontier
Thu, Jun 4 - Mon, Jun 8
Frontier Logo
4:29 pm - 7:35 am
BWI
-
ONT
18h 06m
1 stop
Frontier Logo
5:43 pm - 8:48 pm
ONT
-
BWI
24h 05m
1 stop
$223Frontier
Tue, Jun 2 - Wed, Jun 10
Frontier Logo
5:34 pm - 7:35 am
BWI
-
ONT
17h 01m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$225Frontier
Sat, May 16 - Tue, May 26
Frontier Logo
5:17 pm - 7:08 am
BWI
-
ONT
16h 51m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$227Frontier
Wed, May 27 - Sun, May 31
Frontier Logo
4:29 pm - 7:35 am
BWI
-
ONT
18h 06m
1 stop
Frontier Logo
5:59 pm - 8:18 pm
ONT
-
BWI
23h 19m
1 stop
$228Frontier
Tue, Jun 2 - Sat, Jun 6
Frontier Logo
5:34 pm - 7:08 am
BWI
-
ONT
16h 34m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$230Frontier
Sat, May 23 - Wed, May 27
Frontier Logo
5:34 pm - 7:08 am
BWI
-
ONT
16h 34m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$233Frontier
Sat, May 30 - Thu, Jun 4
Frontier Logo
5:34 pm - 7:35 am
BWI
-
ONT
17h 01m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$235Frontier
Sat, May 16 - Mon, May 18

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Alaska Airlines flights from Baltimore to Ontario

Our best Alaska Airlines deals on Baltimore to Ontario flight tickets
Alaska Airlines
May 13
BWI4:17 pmBaltimore/Washington
10h 39m
1 stop
ONT11:56 pmOntario
May 27
ONT4:03 pmOntario
11h 25m
1 stop
BWI6:28 amBaltimore/Washington
$454
Alaska Airlines
May 13
BWI4:17 pmBaltimore/Washington
10h 39m
1 stop
ONT11:56 pmOntario
May 23
ONT4:03 pmOntario
11h 25m
1 stop
BWI6:28 amBaltimore/Washington
$462
Alaska Airlines
May 17
BWI7:48 amBaltimore/Washington
10h 21m
1 stop
ONT3:09 pmOntario
May 28
ONT4:03 pmOntario
11h 25m
1 stop
BWI6:28 amBaltimore/Washington
$480

Frontier flights from Baltimore to Ontario

Our best Frontier deals on Baltimore to Ontario flight tickets
Frontier
Jun 2
BWI4:29 pmBaltimore/Washington
18h 06m
1 stop
ONT7:35 amOntario
Jun 9
ONT6:43 pmOntario
14h 51m
1 stop
BWI12:34 pmBaltimore/Washington
$210
Frontier
Jun 5
BWI5:17 pmBaltimore/Washington
17h 31m
1 stop
ONT7:48 amOntario
Jun 9
ONT6:43 pmOntario
14h 51m
1 stop
BWI12:34 pmBaltimore/Washington
$215
Frontier
Jun 4
BWI4:29 pmBaltimore/Washington
17h 39m
1 stop
ONT7:08 amOntario
Jun 8
ONT8:06 pmOntario
13h 28m
1 stop
BWI12:34 pmBaltimore/Washington
$220

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 May 6, 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 6/2

4:29 pm-7:35 am

1 stop18h 06m

Ontario

Tue 6/9

6:43 pm-12:34 pm

1 stop14h 51m

$210

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Fri 6/5

5:17 pm-7:48 am

1 stop17h 31m

Ontario

Tue 6/9

6:43 pm-12:34 pm

1 stop14h 51m

$215
Quickest round-trip

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Thu 6/4

4:29 pm-7:08 am

1 stop17h 39m

Ontario

Mon 6/8

8:06 pm-12:34 pm

1 stop13h 28m

$220

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Tue 6/2

4:29 pm-7:35 am

1 stop18h 06m

Ontario

Wed 6/10

5:43 pm-8:48 pm

1 stop24h 05m

$223

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 5/16

5:34 pm-7:35 am

1 stop17h 01m

Ontario

Tue 5/26

8:06 pm-8:18 pm

1 stop21h 12m

$225

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 5/27

5:17 pm-7:08 am

1 stop16h 51m

Ontario

Sun 5/31

8:06 pm-8:18 pm

1 stop21h 12m

$227

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Tue 6/2

4:29 pm-7:35 am

1 stop18h 06m

Ontario

Sat 6/6

5:59 pm-8:18 pm

1 stop23h 19m

$228

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 5/23

5:34 pm-7:08 am

1 stop16h 34m

Ontario

Wed 5/27

8:06 pm-8:18 pm

1 stop21h 12m

$230

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 5/30

5:34 pm-7:08 am

1 stop16h 34m

Ontario

Thu 6/4

8:06 pm-8:18 pm

1 stop21h 12m

$233

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 5/16

5:34 pm-7:35 am

1 stop17h 01m

Ontario

Mon 5/18

8:06 pm-8:18 pm

1 stop21h 12m

$235

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 typical price of a round-trip flight between Baltimore and Ontario?

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 from Baltimore 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 $439 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 $289 on momondo.

Can stopping save me money on Baltimore to Ontario flights?

You could potentially save up to 24% 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 May 2026, prices for Baltimore to Ontario flights are approximately 20% 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

$271

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 $271. The best round-trip flight deal from Baltimore to Ontario found on momondo in the last 72 hours is $378.
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?

  • 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
DeltaPriceFrom $192Free CancellationRating
7.9
8,456 reviews
Search Delta flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
9,684 reviews
Search United Airlines flights
SouthwestPriceFrom $346Free CancellationRating
7.9
4,305 reviews
Search Southwest flights
American AirlinesPriceFrom $351Free CancellationRating
7.1
11,666 reviews
Search American Airlines flights

  • Southwest Flights From Baltimore to Ontario

    Across 5 Southwest flights from Baltimore to Ontario this week, the average price was $457, with the best Southwest deals starting from $346 round-trip. 4,305 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.

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