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Cheap flights from Baltimore to Los Angeles from $84

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 1/27. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:42 pm - 7:01 pmBWI-ONT
9h 19m1 stop
Frontier Logo
3:07 pm - 10:43 amONT-BWI
40h 36m2 stops
$151Frontier
Find Deal
dom., ene. 18 - mié., ene. 28
American Airlines Logo
3:41 pm - 10:48 pmBWI-ONT
10h 07m1 stop
American Airlines Logo
11:59 pm - 2:49 pmONT-BWI
11h 50m1 stop
$184American Airlines
Find Deal
mié., ene. 28 - lun., feb. 2
American Airlines Logo
11:13 am - 6:20 pmBWI-ONT
10h 07m2 stops
American Airlines Logo
11:59 pm - 11:10 pmONT-BWI
20h 11m1 stop
$189American Airlines
Find Deal
mié., ene. 28 - lun., feb. 2
Frontier Logo
1:45 pm - 11:14 pmBWI-ONT
12h 29m2 stops
Frontier Logo
8:32 am - 12:03 pmONT-BWI
24h 31m1 stop
$191Frontier
Find Deal
sáb., ene. 10 - vie., ene. 16
Southwest Logo
7:55 am - 1:50 pmBWI-ONT
8h 55m1 stop
Southwest Logo
5:45 pm - 5:45 amONT-BWI
9h 00m1 stop
$199Southwest
Find Deal
mié., ene. 7 - mié., ene. 7
American Airlines Logo
9:17 am - 6:20 pmBWI-ONT
12h 03m2 stops
American Airlines Logo
11:59 pm - 1:56 pmONT-BWI
10h 57m2 stops
$202American Airlines
Find Deal
mié., ene. 28 - lun., feb. 2
Southwest Logo
7:35 am - 2:45 pmBWI-ONT
10h 10m1 stop
Southwest Logo
9:00 pm - 9:45 amONT-BWI
9h 45m2 stops
$204Southwest
Find Deal
mié., ene. 7 - mié., ene. 7
Southwest Logo
10:40 am - 5:10 pmBWI-ONT
9h 30m2 stops
Southwest Logo
9:00 pm - 10:25 amONT-BWI
10h 25m2 stops
$209Southwest
Find Deal
mié., ene. 7 - mié., ene. 7
Southwest Logo
8:25 am - 3:05 pmBWI-ONT
9h 40m1 stop
Southwest Logo
5:45 pm - 5:45 amONT-BWI
9h 00m1 stop
$216Southwest
Find Deal
mar., ene. 6 - mar., ene. 6
Frontier Logo
1:02 pm - 1:39 pmBWI-ONT
27h 37m1 stop
Frontier Logo
8:32 am - 12:03 pmONT-BWI
24h 31m1 stop
$221Frontier
Find Deal
sáb., ene. 10 - vie., ene. 16

Frontier flights from Baltimore to Ontario

Our best Frontier deals on Baltimore to Ontario flight tickets
Frontier
Jan 18
BWI12:42 pmBaltimore/Washington
9h 19m
1 stop
ONT7:01 pmOntario
Jan 28
ONT3:07 pmOntario
40h 36m
2 stops
BWI10:43 amBaltimore/Washington
$151
Find similar
Frontier
Jan 10
BWI1:45 pmBaltimore/Washington
12h 29m
2 stops
ONT11:14 pmOntario
Jan 16
ONT8:32 amOntario
24h 31m
1 stop
BWI12:03 pmBaltimore/Washington
$191
Find similar
Frontier
Jan 10
BWI1:02 pmBaltimore/Washington
27h 37m
1 stop
ONT1:39 pmOntario
Jan 16
ONT8:32 amOntario
24h 31m
1 stop
BWI12:03 pmBaltimore/Washington
$221
Find similar

Delta flights from Baltimore to Ontario

Our best Delta deals on Baltimore to Ontario flight tickets
Delta
Jan 20
BWI7:00 amBaltimore/Washington
8h 16m
1 stop
ONT12:16 pmOntario
Jan 22
ONT10:30 pmOntario
7h 53m
1 stop
BWI9:23 amBaltimore/Washington
$257
Find similar
Delta
Feb 7
BWI7:00 amBaltimore/Washington
8h 16m
1 stop
ONT12:16 pmOntario
Feb 7
ONT10:30 pmOntario
12h 16m
2 stops
BWI1:46 pmBaltimore/Washington
$262
Find similar
Delta
Jan 31
BWI6:00 amBaltimore/Washington
8h 31m
1 stop
ONT11:31 amOntario
Feb 7
ONT10:30 pmOntario
8h 35m
1 stop
BWI10:05 amBaltimore/Washington
$287
Find similar

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 diciembre 2, 2025.
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

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

dom. 1/18

12:42 pm-7:01 pm

1 stop9h 19m

Ontario

mié. 1/28

3:07 pm-10:43 am

2 stops40h 36m

$151

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

mié. 1/28

3:41 pm-10:48 pm

1 stop10h 07m

Ontario

lun. 2/2

11:59 pm-2:49 pm

1 stop11h 50m

$184

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

mié. 1/28

11:13 am-6:20 pm

2 stops10h 07m

Ontario

lun. 2/2

11:59 pm-11:10 pm

1 stop20h 11m

$189

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

sáb. 1/10

1:45 pm-11:14 pm

2 stops12h 29m

Ontario

vie. 1/16

8:32 am-12:03 pm

1 stop24h 31m

$191

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

mié. 1/7

7:55 am-1:50 pm

1 stop8h 55m

Ontario

mié. 1/7

5:45 pm-5:45 am

1 stop9h 00m

$199

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

mié. 1/28

9:17 am-6:20 pm

2 stops12h 03m

Ontario

lun. 2/2

11:59 pm-1:56 pm

2 stops10h 57m

$202

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

mié. 1/7

7:35 am-2:45 pm

1 stop10h 10m

Ontario

mié. 1/7

9:00 pm-9:45 am

2 stops9h 45m

$204

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

mié. 1/7

10:40 am-5:10 pm

2 stops9h 30m

Ontario

mié. 1/7

9:00 pm-10:25 am

2 stops10h 25m

$209

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

mar. 1/6

8:25 am-3:05 pm

1 stop9h 40m

Ontario

mar. 1/6

5:45 pm-5:45 am

1 stop9h 00m

$216

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

sáb. 1/10

1:02 pm-1:39 pm

1 stop27h 37m

Ontario

vie. 1/16

8:32 am-12:03 pm

1 stop24h 31m

$221

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 cheapest month to fly to Ontario?

In general, August 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 $356. If you aren’t able to travel during the month of August, then book flights to Ontario from Baltimore during May instead. Flights to Ontario in May, while not as cheap as those in August, still average around $388.

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 $453 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 $306 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 1% 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 December 2025, prices for Baltimore to Ontario flights are approximately 54% 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

Fastest flight time

5h 30m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Ontario

1 airport
The fastest flight from Baltimore to Ontario takes 5h 30m
Direct flights go from Baltimore to Ontario on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
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 7h 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 $188Free CancellationRating
5.8
3,094 reviews
Search Frontier flights
DeltaPriceFrom $326Free CancellationRating
7.9
8,011 reviews
Search Delta flights
American AirlinesPriceFrom $336Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
9,063 reviews
Search United Airlines flights
SouthwestPriceFrom $346Free CancellationRating
8.0
4,253 reviews
Search Southwest 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.

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