$89+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Baltimore to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Baltimore/Washington to Ontario are usually found in September or August, booked 31 days in advance, depart on a Tuesday or Monday and return on a Tuesday
Cheap 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 April 11, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $198 (Frontier) |
One-way from | $89 (Frontier) |
Popular in | June |
Cheapest in | September |
Average price | $488 |
Find flight deals from Baltimore to Ontario
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 April 11, 2025.
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 April 11, 2025.
This Frontier deal was found by Cheapflights users on 4/9. 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.
This Alaska Airlines deal was found by Cheapflights users on 4/8. 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.
This Expedia deal was found by Cheapflights users on 4/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 4/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 4/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 4/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Hawaiian Airlines deal was found by Cheapflights users on 4/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 April 11, 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
Fri 5/9
6:12 pm-11:59 pm
1 stop8h 47m
Ontario
Sun 5/11
12:59 am-5:22 pm
1 stop13h 23m
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Tue 5/6
7:06 am-3:32 pm
1 stop11h 26m
Ontario
Wed 5/14
4:29 pm-5:46 am
1 stop10h 17m
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Tue 7/15
6:50 am-1:41 pm
1 stop9h 51m
Ontario
Wed 7/30
11:59 pm-12:43 pm
1 stop9h 44m
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Sat 5/10
5:40 am-11:08 am
1 stop8h 28m
Ontario
Sat 5/17
6:00 am-11:36 pm
2 stops14h 36m
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Tue 5/20
4:19 pm-10:00 pm
1 stop8h 41m
Ontario
Wed 5/21
1:45 pm-5:23 am
2 stops12h 38m
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Thu 5/15
7:49 am-3:50 pm
1 stop11h 01m
Ontario
Sun 5/18
12:59 am-5:22 pm
1 stop13h 23m
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Thu 6/5
8:10 am-3:25 pm
2 stops10h 15m
Ontario
Wed 6/11
9:20 pm-5:10 am
Nonstop4h 50m
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Thu 5/29
7:49 am-3:50 pm
1 stop11h 01m
Ontario
Wed 6/4
6:00 am-6:05 pm
1 stop9h 05m
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Wed 4/16
5:18 pm-11:59 pm
1 stop9h 41m
BaltimoreOntario
BWI - ONT
BWIONT
Baltimore/Washington
Sat 5/3
7:06 am-3:32 pm
1 stop11h 26m
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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | 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.
Cheapflights Insights
Everything you need to know about your flight from Baltimore to Ontario
How far ahead should I book a flight from Baltimore to Ontario?
Use this chart to determine the optimal time to book a round-trip flight from Baltimore to Ontario. Price data was last updated on April 4, 2025.
The price you pay for your flight from Baltimore to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 31 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Baltimore to Ontario?
Currently, August is the cheapest month in which you can book a flight from Baltimore to Ontario (average of $246). Flying from Baltimore to Ontario in March is currently the most expensive (average of $328). 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 April 11, 2025.
When flying from Baltimore to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
What is the cheapest day to fly from Baltimore to Ontario?
Use this chart to determine the cheapest time to fly round-trip from Baltimore to Ontario. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Baltimore to Ontario flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in Ontario by month
Plan your trip to Ontario by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.
Temperature in Ontario by month
Plan your trip to Ontario by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).
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 April 11, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Baltimore to Ontario have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
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
See prices for flight routes from nearby airports that may be better suited for you.
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 April 11, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$154 | Average$248 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$286 | Average$515 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$306 | Average$464 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$321 | Average$538 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$336 | Average$482 | FlexibilityNo cancel fee | On-time63% |