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Cheap flights from Baltimore to Los Angeles from $90

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 10/8. 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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0 bags

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Find the cheapest flights from Baltimore to Los Angeles

Cheap round-trip flights

Southwest Logo
12:25 pm - 4:45 pmBWI-ONT
7h 20m1 stop
Southwest Logo
10:45 am - 11:00 pmONT-BWI
9h 15m1 stop
$179Southwest
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Tue, Aug 19 - Tue, Oct 28
Southwest Logo
4:35 pm - 8:45 pmBWI-ONT
7h 10m1 stop
Southwest Logo
5:15 am - 4:30 pmONT-BWI
8h 15m2 stops
$184Southwest
Find Deal
Tue, Aug 19 - Tue, Oct 28
American Airlines Logo
5:38 pm - 9:28 pmBWI-ONT
6h 50m1 stop
American Airlines Logo
11:59 pm - 12:43 pmONT-BWI
9h 44m1 stop
$209American Airlines
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Thu, Aug 7 - Mon, Aug 11
American Airlines Logo
7:58 am - 4:24 pmBWI-ONT
11h 26m2 stops
American Airlines Logo
8:15 am - 8:45 pmONT-BWI
9h 30m2 stops
$219American Airlines
Find Deal
Tue, Aug 19 - Tue, Oct 28
Alaska Airlines Logo
7:00 am - 2:12 pmBWI-ONT
10h 12m1 stop
Alaska Airlines Logo
3:06 pm - 5:39 amONT-BWI
11h 33m1 stop
$264Alaska Airlines
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Wed, Sep 24 - Tue, Sep 30
Frontier Logo
5:26 pm - 11:50 pmBWI-ONT
9h 24m1 stop
Frontier Logo
12:59 am - 4:31 pmONT-BWI
12h 32m1 stop
$268Frontier
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Sat, Aug 9 - Fri, Aug 15
Frontier Logo
6:29 pm - 11:50 pmBWI-ONT
8h 21m1 stop
Frontier Logo
12:59 am - 5:41 pmONT-BWI
13h 42m1 stop
$275Frontier
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Thu, Aug 21 - Sun, Aug 24
Delta Logo
4:39 pm - 10:20 pmBWI-ONT
8h 41m1 stop
Delta Logo
10:00 pm - 9:22 amONT-BWI
8h 22m1 stop
$277Delta
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Fri, Aug 15 - Thu, Aug 21
Delta Logo
6:00 am - 12:14 pmBWI-ONT
9h 14m2 stops
Delta Logo
11:40 am - 10:48 pmONT-BWI
8h 08m1 stop
$282Delta
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Wed, Aug 6 - Sat, Aug 9
Alaska Airlines Logo
7:37 pm - 10:44 amBWI-ONT
18h 07m1 stop
Alaska Airlines Logo
3:06 pm - 5:39 amONT-BWI
11h 33m1 stop
$306Alaska Airlines
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Thu, Sep 4 - Tue, Sep 16

Frontier flights from Baltimore to Ontario

Our best Frontier deals on Baltimore to Ontario flight tickets
Frontier
Aug 9
BWI5:26 pmBaltimore/Washington
9h 24m
1 stop
ONT11:50 pmOntario
Aug 15
ONT12:59 amOntario
12h 32m
1 stop
BWI4:31 pmBaltimore/Washington
$268
Find similar
Frontier
Aug 21
BWI6:29 pmBaltimore/Washington
8h 21m
1 stop
ONT11:50 pmOntario
Aug 24
ONT12:59 amOntario
13h 42m
1 stop
BWI5:41 pmBaltimore/Washington
$275
Find similar
Frontier
Aug 16
BWI5:26 pmBaltimore/Washington
9h 24m
1 stop
ONT11:50 pmOntario
Aug 20
ONT12:59 amOntario
13h 45m
1 stop
BWI5:44 pmBaltimore/Washington
$290
Find similar

Southwest flights from Baltimore to Ontario

Our best Southwest deals on Baltimore to Ontario flight tickets
Southwest
Aug 19
BWI12:25 pmBaltimore/Washington
7h 20m
1 stop
ONT4:45 pmOntario
Oct 28
ONT10:45 amOntario
9h 15m
1 stop
BWI11:00 pmBaltimore/Washington
$179
Find similar
Southwest
Aug 19
BWI4:35 pmBaltimore/Washington
7h 10m
1 stop
ONT8:45 pmOntario
Oct 28
ONT5:15 amOntario
8h 15m
2 stops
BWI4:30 pmBaltimore/Washington
$184
Find similar
Southwest
Oct 15
BWI12:40 pmBaltimore/Washington
9h 15m
2 stops
ONT6:55 pmOntario
Oct 22
ONT4:25 pmOntario
9h 35m
2 stops
BWI5:00 amBaltimore/Washington
$189
Find similar

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, September 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 $306. If you aren’t able to travel during the month of September, then book flights to Ontario from Baltimore during August instead. Flights to Ontario in August, while not as cheap as those in September, still average around $338.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Tuesday when prices can be found for as low as $323. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Baltimore to Ontario for around $480.

What is the cheapest time of day to depart on your flight to Ontario?

In the afternoon is the cheapest time of day to fly from Baltimore to Ontario when you can find flight prices for as low as $366. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $431 on average. Flights to Ontario from Baltimore in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $434 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 $300 on momondo.

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

There are 1 cabin classes 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.

How have Baltimore to Ontario flight prices changed over time?

As of July 2025, prices for Baltimore to Ontario flights are approximately 0% 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

$90

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 $90. The best round-trip flight deal from Baltimore to Ontario found on momondo in the last 72 hours is $179.
The fastest flight from Baltimore to Ontario takes 5h 15m
Direct flights go from Baltimore to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)
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  • 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 $175Free CancellationRating
5.9
3,271 reviews
Search Frontier flights
United AirlinesPriceFrom $222Free CancellationRating
7.4
8,846 reviews
Search United Airlines flights
American AirlinesPriceFrom $276Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $306Free CancellationRating
8.0
7,951 reviews
Search Delta flights
SouthwestPriceFrom $336Free CancellationRating
8.0
4,249 reviews
Search Southwest flights

  • Southwest Flights From Baltimore to Ontario

    Across 9 Southwest flights from Baltimore to Ontario this week, the average price was $467, with the best Southwest deals starting from $336 round-trip. 4,249 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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