$95+ Cheap flights from Baltimore to Ontario (BWI - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ONT
Apr 9 — Apr 161
Round-trip
1 adult, Economy
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Cheapest flights from Baltimore to OntarioExplore the most affordable flight options available from Baltimore to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
Explore the most affordable flight options available from Baltimore to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Fri 4/178:26 am
ONT
- BWI
1 stop8h 49m
Frontier
Deal found 3/5![Frontier logo]()
$200
This Trip.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Sun 5/108:26 am
ONT
- BWI
1 stop23h 46m
Frontier
Deal found 3/5![Frontier logo]()
$211
This Frontier deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Fri 5/18:26 am
ONT
- BWI
1 stop8h 43m
Frontier
Deal found 3/6![Frontier logo]()
$221
This Frontier deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/411:49 am
BWI
- ONT
1 stop9h 56m
Frontier
Wed 4/85:18 pm
ONT
- BWI
1 stop13h 16m
Frontier
Deal found 3/9![Frontier logo]()
$225
This Booking.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Sun 4/198:21 am
ONT
- BWI
1 stop23h 06m
Frontier
Deal found 3/10![Frontier logo]()
$227
This Frontier deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Fri 4/248:26 am
ONT
- BWI
1 stop8h 43m
Frontier
Deal found 3/9![Frontier logo]()
$241
This Frontier deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1111:49 am
BWI
- ONT
1 stop9h 56m
Frontier
Fri 5/18:26 am
ONT
- BWI
1 stop8h 43m
Frontier
Deal found 3/6![Frontier logo]()
$242
This Booking.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:34 pm
BWI
- ONT
1 stop9h 03m
Frontier
Fri 4/248:26 am
ONT
- BWI
1 stop8h 43m
Frontier
Deal found 3/8![Frontier logo]()
$244
This Frontier deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/211:33 am
BWI
- ONT
1 stop10h 12m
Frontier
Wed 4/85:18 pm
ONT
- BWI
1 stop13h 16m
Frontier
Deal found 3/7![Frontier logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/139:07 am
BWI
- ONT
2 stops25h 24m
Frontier
Sun 5/178:26 am
ONT
- BWI
1 stop23h 46m
Frontier
Deal found 3/7![Frontier logo]()
$248
Best flights from Baltimore to OntarioDiscover carefully curated flight deals from Baltimore to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
Discover carefully curated flight deals from Baltimore to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:40 am
BWI
- ONT
1 stop7h 55m
Southwest
Tue 4/289:55 pm
ONT
- BWI
Nonstop4h 45m
Southwest
Deal found 3/7![Southwest logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:30 pm
BWI
- ONT
1 stop10h 29m
Alaska Airlines
Wed 9/96:58 pm
ONT
- BWI
1 stop8h 23m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$451
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:00 am
BWI
- ONT
1 stop7h 38m
United Airlines
Mon 4/276:49 pm
ONT
- BWI
1 stop8h 11m
United Airlines
Deal found 3/7![United Airlines logo]()
$509
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/28:10 am
BWI
- ONT
1 stop10h 10m
Southwest
Tue 4/79:55 pm
ONT
- BWI
Nonstop4h 45m
Southwest
Deal found 3/6![Southwest logo]()
$409
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:40 am
BWI
- ONT
1 stop11h 30m
Southwest
Thu 5/2112:40 pm
ONT
- BWI
1 stop8h 15m
Southwest
Deal found 3/8![Southwest logo]()
$435
This Alaska Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:50 am
BWI
- ONT
1 stop11h 54m
Alaska Airlines
Mon 8/244:00 pm
ONT
- BWI
1 stop11h 21m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$484
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
BWI
- ONT
2 stops15h 02m
United Airlines
Sat 4/186:49 pm
ONT
- BWI
2 stops11h 50m
United Airlines
Deal found 3/9![United Airlines logo]()
$513
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/13:42 pm
BWI
- ONT
1 stop9h 49m
United Airlines
Sat 4/117:00 am
ONT
- BWI
1 stop7h 33m
United Airlines
Deal found 3/6![United Airlines logo]()
$534
This Alaska Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:51 am
BWI
- ONT
1 stop9h 56m
Alaska Airlines
Mon 9/146:58 pm
ONT
- BWI
1 stop8h 23m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$545
This Southwest deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:00 pm
BWI
- ONT
Nonstop5h 15m
Southwest
Sat 8/111:55 pm
ONT
- BWI
1 stop7h 05m
Southwest
Deal found 3/5![Southwest logo]()
$502
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/223:03 pm
BWI
- ONT
1 stop9h 52m
United Airlines
Sat 5/305:45 am
ONT
- BWI
1 stop7h 45m
United Airlines
Deal found 3/5![United Airlines logo]()
$547
This Alaska Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:51 am
BWI
- ONT
1 stop13h 22m
Alaska Airlines
Tue 9/14:00 pm
ONT
- BWI
1 stop11h 21m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$557
Last-minute flights from Baltimore to OntarioDiscover last-minute flight deals from Baltimore to Ontario. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Ontario. Data last updated March 10, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/211:33 am
BWI
- ONT
1 stop10h 12m
Frontier
Wed 4/85:18 pm
ONT
- BWI
1 stop13h 16m
Frontier
Deal found 3/9![Frontier logo]()
$245
This Frontier deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/411:49 am
BWI
- ONT
1 stop9h 56m
Frontier
Wed 4/85:18 pm
ONT
- BWI
1 stop13h 16m
Frontier
Deal found 3/9![Frontier logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:05 am
BWI
- ONT
2 stops36h 52m
Frontier
Tue 4/148:15 am
ONT
- BWI
1 stop27h 01m
Frontier
Deal found 3/9![Frontier logo]()
$259
This Frontier deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1111:49 am
BWI
- ONT
1 stop9h 56m
Frontier
Fri 5/18:26 am
ONT
- BWI
1 stop8h 43m
Frontier
Deal found 3/6![Frontier logo]()
$242
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Fri 4/178:26 am
ONT
- BWI
1 stop8h 49m
Frontier
Deal found 3/5![Frontier logo]()
$200
This Booking.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Sun 4/198:21 am
ONT
- BWI
1 stop23h 06m
Frontier
Deal found 3/9![Frontier logo]()
$207
This Frontier deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Fri 5/18:26 am
ONT
- BWI
1 stop8h 43m
Frontier
Deal found 3/6![Frontier logo]()
$221
This Frontier deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Fri 4/248:26 am
ONT
- BWI
1 stop8h 43m
Frontier
Deal found 3/9![Frontier logo]()
$241
This Booking.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:34 pm
BWI
- ONT
1 stop9h 03m
Frontier
Fri 4/248:26 am
ONT
- BWI
1 stop8h 43m
Frontier
Deal found 3/8![Frontier logo]()
$244
One-way flights from Baltimore to OntarioSearch for one-way flight options from Baltimore to Ontario. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
Search for one-way flight options from Baltimore to Ontario. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 pm
BWI
- ONT
2 stops32h 55m
Frontier
Deal found 3/5![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:22 am
BWI
- ONT
1 stop8h 16m
Frontier
Deal found 3/9![Frontier logo]()
$99
This CheapOair deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Deal found 3/5![Frontier logo]()
$100
This Booking.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:52 pm
BWI
- ONT
1 stop23h 46m
Frontier
Deal found 3/9![Frontier logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:07 am
BWI
- ONT
2 stops25h 24m
Frontier
Deal found 3/5![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:38 pm
BWI
- ONT
2 stops32h 18m
Frontier
Deal found 3/5![Frontier logo]()
$113
This Super.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:34 pm
BWI
- ONT
1 stop9h 03m
Frontier
Deal found 3/8![Frontier logo]()
$119
This Super.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:06 pm
BWI
- ONT
1 stop8h 33m
Frontier
Deal found 3/9![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:34 pm
BWI
- ONT
1 stop9h 03m
Frontier
Deal found 3/5![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/63:19 pm
BWI
- ONT
2 stops35h 37m
Frontier
Deal found 3/6![Frontier logo]()
$122
Find flight deals from Baltimore to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $200 (Frontier) |
One-way from | $95 (Kiwi.com) |
Popular in | July |
Cheapest in | August |
Average price | $478 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated March 10, 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
Cheapest round-trip
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Tue 4/21
6:40 am-11:35 am
1 stop7h 55m
Ontario
Tue 4/28
9:55 pm-5:40 am
Nonstop4h 45m
$404
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Thu 4/2
8:10 am-3:20 pm
1 stop10h 10m
Ontario
Tue 4/7
9:55 pm-5:40 am
Nonstop4h 45m
$409
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Thu 5/14
9:40 am-6:10 pm
1 stop11h 30m
Ontario
Thu 5/21
12:40 pm-11:55 pm
1 stop8h 15m
$435
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Tue 9/1
4:30 pm-11:59 pm
1 stop10h 29m
Ontario
Wed 9/9
6:58 pm-6:21 am
1 stop8h 23m
$451
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Tue 8/18
7:50 am-4:44 pm
1 stop11h 54m
Ontario
Mon 8/24
4:00 pm-6:21 am
1 stop11h 21m
$484
Quickest round-trip
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Sat 8/1
5:00 pm-7:15 pm
Nonstop5h 15m
Ontario
Sat 8/1
11:55 pm-10:00 am
1 stop7h 05m
$502
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Thu 4/23
8:00 am-12:38 pm
1 stop7h 38m
Ontario
Mon 4/27
6:49 pm-6:00 am
1 stop8h 11m
$509
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Tue 4/14
6:00 am-6:02 pm
2 stops15h 02m
Ontario
Sat 4/18
6:49 pm-9:39 am
2 stops11h 50m
$513
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Wed 4/1
3:42 pm-10:31 pm
1 stop9h 49m
Ontario
Sat 4/11
7:00 am-5:33 pm
1 stop7h 33m
$534
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Fri 9/4
7:51 am-2:47 pm
1 stop9h 56m
Ontario
Mon 9/14
6:58 pm-6:21 am
1 stop8h 23m
$545
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Baltimore to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Ontario in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Baltimore-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Baltimore-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Baltimore to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Baltimore with our price prediction graph.
BWI-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Baltimore to Ontario
What is the cheapest month to book a flight from Baltimore to Ontario?
Currently, November is the cheapest month in which you can book a flight from Baltimore to Ontario (average of $77). Flying from Baltimore to Ontario in March is currently the most expensive (average of $188). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from BWI to ONT?
Find hourly flight availability from Baltimore to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.
It’s typically best to fly out from Baltimore to Ontario in the evening. Doing so could potentially save you 34% on the flight price compared to flying at noon, which is usually more expensive.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated March 10, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Baltimore to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Related info for your journey
Find useful and relevant information for your journey from Baltimore to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Baltimore to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Baltimore to Ontario by cabin class
Find flights from Baltimore to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 10, 2026.
Baltimore and Ontario flights
Browse other Baltimore and Ontario flight options. Last updated on March 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Baltimore to Ontario
Discover the top 5 airlines that operate flights from Baltimore to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$195 | Average$265 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$222 | Average$392 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$266 | Average$387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$336 | Average$472 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$346 | Average$443 | FlexibilityNo cancel fee | On-time63% |