Cheap flights from North America to Los Angeles from $39
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from North America to Los Angeles departing on 10/27. 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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United Airlines flights from North America to Ontario
Our best United Airlines deals on North America to Ontario flight tickets
American Airlines flights from North America to Ontario
Our best American Airlines deals on North America to Ontario flight tickets
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How to get the cheapest flight ticket from North America 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 North America to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $289. If you aren’t able to travel during the month of September, then book flights to Ontario from North America during April instead. Flights to Ontario in April, while not as cheap as those in September, still average around $307.
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 Wednesday when prices can be found for as low as $331. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from North America to Ontario for around $380.
What is the cheapest time of day to depart on your flight to Ontario?
At noon is the cheapest time of day to fly from North America to Ontario when you can find flight prices for as low as $334. Flying to Ontario at noon 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 morning when prices are $362 on average. Flights to Ontario from North America in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest North America to Ontario flight route?
Fly from San Francisco to Ontario for the best North America - 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 North America when booking 5 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $367 when searching 5 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from North America for as low as $249 on momondo.
What cabin class options are available on North America to Ontario flights?
There are 4 cabin classes available to choose from on North America 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 North America to Ontario?
Southwest, American Airlines, and Frontier are the most popular carriers operating from North America to Ontario
What airlines fly to Ontario?
Frontier, Delta and United Airlines are the top three most popular airlines that fly to Ontario from North America according to our data. Frontier is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 13 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 North America to Ontario on average per day?
As of June 2025, there are 48 flights per day flying from North America to Ontario. The most common time of day flights depart is 7:00PM, with 46% of flights taking off in the evening.
How many flights depart from North America to Ontario on average per week?
336 flights are operational weekly from North America to Ontario as of June 2025. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.
Cheap North America to Ontario flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from North America to Ontario
When did momondo last update prices for flights from North America to Ontario Airport?
Prices for flights from North America to Ontario Airport refresh daily.
How many operators does momondo search for flights from North America to Ontario Airport?
As of June 2025, there are 9 operators available to choose from for flights from North America to Ontario Airport.
How old do you have to be to fly from North America 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 North America to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from North America to Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from North America to Ontario is Airbus A320neo (15.40% of total bookings). The next most popular plane models are Airbus A321neo (10.33%), Boeing 737 MAX 8 (8.58%), and Boeing 737-800 Passenger/BBJ2 (winglets) (8.10%).
Best airlines flying from North America to Ontario
Compare and see reviews for airlines that fly from North America to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $23 | Free Cancellation | Rating 6.3 8,061 reviews | |||
| PriceFrom $37 | Free Cancellation | Rating 5.9 3,296 reviews | |||
| PriceFrom $58 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $58 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $59 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $97 | Free Cancellation | Rating 8.0 4,278 reviews | |||
| PriceFrom $98 | Free Cancellation | Rating 7.8 2,500 reviews | |||
| PriceFrom $176 | Free Cancellation | Rating 7.3 2,922 reviews | |||
| PriceFrom $230 | Free Cancellation | Rating 7.2 10,000 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from North America to Ontario?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from North America to Ontario. momondo saves you time and could save you money on your trip.
Can I find flights from North America to Ontario with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Ontario from North America with this policy.
How can momondo help me find flights from North America to Ontario?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from North America.
I’m not ready to book a flight from North America to Ontario right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Ontario from North America. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.