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 9/28. 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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Frontier flights from Baltimore to Ontario
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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, 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.
What is the cheapest airline that flies from Baltimore/Washington to Ontario?
Frontier, Hawaiian Airlines, and Southwest are the most popular carriers operating from Baltimore/Washington to Ontario
What airlines fly to Ontario?
United Airlines, Spirit Airlines and American Airlines are the top three most popular airlines that fly to Ontario from Baltimore according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 9 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from Baltimore to Ontario on average per day?
As of July 2025, there are 1 flights per day flying from Baltimore to Ontario. The most common time of day flights depart is 3:00PM, with 60% of flights taking off in the afternoon.
How many flights depart from Baltimore to Ontario on average per week?
As of July 2025, 8 flights take off from Baltimore and land in Ontario each week. The most common flight departure day for this route is Tue, with 38% of weekly flights taking off on this day.
When to book flights from Baltimore to Ontario
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
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?
As of July 2025, there are 5 operators available to choose from 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?
Based on momondo bookings for flights between Baltimore and Ontario, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 37.74% of the total bookings. Other popular models include Boeing 737 MAX 9 with 18.87%, Airbus A321neo with 11.32%, and Boeing 737 MAX 8 with 7.55%.
What is the most popular airline from Baltimore to Ontario?
momondo data reveals that the most frequently booked airline on the route from Baltimore to Ontario is Southwest, representing 42% of all bookings. The subsequent popular airlines are Delta at 18%, United Airlines at 17%, and American Airlines at 14%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $175 | Free Cancellation | Rating 5.9 3,286 reviews | |||
| PriceFrom $222 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $276 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $306 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $336 | Free Cancellation | Rating 8.0 4,266 reviews |
Southwest Flights From Baltimore to Ontario
Across 8 Southwest flights from Baltimore to Ontario this week, the average price was $469, with the best Southwest deals starting from $336 round-trip. 4,270 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.