$95+ Cheap flights from Ontario to Baltimore (ONT - BWI)
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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Ontario to Baltimore 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 Ontario to Baltimore/Washington are usually found in August or April, booked 47 days in advance, depart on a Tuesday or Monday and return on a Tuesday
Cheap flight deals from Ontario to Baltimore
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Baltimore (BWI). 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 15, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $198 (Frontier) |
One-way from | $95 (Frontier) |
Popular in | June |
Cheapest in | August |
Average price | $402 |
Find flight deals from Ontario to Baltimore
Cheapest flights from Ontario to BaltimoreExplore the most affordable flight options available from Ontario to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.
Explore the most affordable flight options available from Ontario to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.
This CheapOair deal was found by Cheapflights users on 4/14. 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.
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines deal was found by Cheapflights users on 4/14. 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 4/14. 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 Southwest deal was found by Cheapflights users on 4/13. 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 Expedia deal was found by Cheapflights users on 4/14. 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 United Airlines deal was found by Cheapflights users on 4/14. 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 Hawaiian Airlines deal was found by Cheapflights users on 4/14. 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 Ontario to Baltimore 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 15, 2025.
Use the filters below to find and compare flights from Ontario to Baltimore that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Thu 5/1
12:59 am-5:22 pm
1 stop13h 23m
Baltimore/Washington
Mon 5/5
6:12 pm-11:59 pm
1 stop8h 47m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Wed 5/28
4:45 pm-6:29 am
1 stop10h 44m
Baltimore/Washington
Tue 6/3
7:49 am-3:50 pm
1 stop11h 01m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Mon 5/5
10:40 pm-9:56 am
1 stop8h 16m
Baltimore/Washington
Thu 5/8
6:03 am-11:50 am
1 stop8h 47m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Tue 5/27
7:05 pm-10:27 am
2 stops12h 22m
Baltimore/Washington
Wed 6/25
7:05 am-12:17 pm
1 stop8h 12m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Thu 7/3
9:20 pm-5:10 am
Nonstop4h 50m
Baltimore/Washington
Sun 7/6
6:30 am-1:05 pm
2 stops9h 35m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Thu 5/8
12:59 am-5:22 pm
1 stop13h 23m
Baltimore/Washington
Thu 5/15
7:49 am-3:50 pm
1 stop11h 01m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Tue 5/6
6:08 am-4:17 pm
1 stop7h 09m
Baltimore/Washington
Tue 5/20
4:19 pm-10:00 pm
1 stop8h 41m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Tue 6/3
4:45 pm-6:29 am
1 stop10h 44m
Baltimore/Washington
Sun 6/8
7:49 am-3:50 pm
1 stop11h 01m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Fri 5/23
12:59 am-4:53 pm
1 stop12h 54m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Mon 5/12
10:52 am-6:10 am
1 stop16h 18m
Compare providers for flights from Ontario to Baltimore
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 Ontario to Baltimore in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Baltimore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Baltimore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Baltimore flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Baltimore flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Baltimore 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 Ontario to Baltimore
Have a flexible travel schedule? Discover the best time to fly to Baltimore from Ontario with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Baltimore
How far ahead should I book a flight from Ontario to Baltimore?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Baltimore. Price data was last updated on April 11, 2025.
The best time to book flights from Ontario to Baltimore is 47 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Ontario to Baltimore?
Currently, August is the cheapest month in which you can book a flight from Ontario to Baltimore (average of $241). Flying from Ontario to Baltimore in March is currently the most expensive (average of $290). 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 ONT to BWI?
Find hourly flight availability from Ontario to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 15, 2025.
One of the essential ways to save on airfare from Ontario to Baltimore is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 18% on airfare.
What is the cheapest day to fly from Ontario to Baltimore?
Use this chart to determine the cheapest time to fly round-trip from Ontario to Baltimore. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their Ontario to Baltimore flight should consider departing on Wednesday afternoons 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 Baltimore by month
Plan your trip to Baltimore by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Baltimore ranges from 2.9 - 4.1 inches per month. July is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Baltimore when rainfall is around 2.9 in.
Temperature in Baltimore by month
Plan your trip to Baltimore by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Baltimore, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).
Reviews of airlines servicing Baltimore
Get insights into the airlines that provide service to Baltimore. 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 Baltimore. Reviews last updated April 15, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Ontario to Baltimore have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Cheri,Jan 2025
FAT - SEA
Related info for your journey
Find useful and relevant information for your journey from Ontario to Baltimore. 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 Ontario to Baltimore
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Ontario to Baltimore
Discover the top 6 airlines that operate flights from Ontario to Baltimore. 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 15, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$130 | Average$210 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$148 | Average$262 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$256 | Average$514 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$467 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$311 | Average$569 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$321 | Average$456 | FlexibilityNo cancel fee | On-time63% |