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Cheap flights from Ontario International to Los Angeles

Compare Ontario International to Los Angeles flight deals

Find the cheapest month or even day of the year to fly to Los Angeles

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Flight deals from Ontario International to Los Angeles

Looking for a cheap last-minute deal or the best round-trip flight from Ontario International to Los Angeles? Find the lowest prices on one-way and round-trip tickets right here.
Los Angeles.$127 per passenger.Departing Tue, Jan 6, returning Tue, Jan 20.Round-trip flight with Frontier Airlines and Spirit Airlines.Outbound indirect flight with Frontier Airlines, departing from Ontario International on Tue, Jan 6, arriving in Los Angeles International.Inbound indirect flight with Spirit Airlines, departing from Los Angeles International on Tue, Jan 20, arriving in Ontario International.Price includes taxes and charges.From $127, select.
Los Angeles.$133 per passenger.Departing Wed, Jan 28, returning Wed, Feb 4.Round-trip flight with Frontier Airlines and Spirit Airlines.Outbound indirect flight with Frontier Airlines, departing from Ontario International on Wed, Jan 28, arriving in Los Angeles International.Inbound indirect flight with Spirit Airlines, departing from Los Angeles International on Wed, Feb 4, arriving in Ontario International.Price includes taxes and charges.From $133, select.
Los Angeles.$164 per passenger.Departing Thu, Feb 12, returning Mon, Feb 16.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Ontario International on Thu, Feb 12, arriving in Los Angeles International.Inbound indirect flight with Frontier Airlines, departing from Los Angeles International on Mon, Feb 16, arriving in Ontario International.Price includes taxes and charges.From $164, select.
Los Angeles.$219 per passenger.Departing Tue, Apr 21, returning Tue, Apr 28.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Ontario International on Tue, Apr 21, arriving in Los Angeles International.Inbound indirect flight with Alaska Airlines, departing from Los Angeles International on Tue, Apr 28, arriving in Ontario International.Price includes taxes and charges.From $219, select.
Los Angeles.$264 per passenger.Departing Fri, Feb 13, returning Fri, Mar 20.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Ontario International on Fri, Feb 13, arriving in Los Angeles International.Inbound indirect flight with Frontier Airlines, departing from Los Angeles International on Fri, Mar 20, arriving in Ontario International.Price includes taxes and charges.From $264, select.
Los Angeles.$323 per passenger.Departing Tue, Dec 30, returning Tue, Jan 6.Round-trip flight with Frontier Airlines and Spirit Airlines.Outbound indirect flight with Frontier Airlines, departing from Ontario International on Tue, Dec 30, arriving in Los Angeles International.Inbound indirect flight with Spirit Airlines, departing from Los Angeles International on Tue, Jan 6, arriving in Ontario International.Price includes taxes and charges.From $323, select.
Los Angeles.$346 per passenger.Departing Sat, Dec 27, returning Tue, Dec 30.Round-trip flight with Frontier Airlines and Spirit Airlines.Outbound indirect flight with Frontier Airlines, departing from Ontario International on Sat, Dec 27, arriving in Los Angeles International.Inbound indirect flight with Spirit Airlines, departing from Los Angeles International on Tue, Dec 30, arriving in Ontario International.Price includes taxes and charges.From $346, select.
Los Angeles.$508 per passenger.Departing Sun, Apr 26, returning Sun, May 3.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Ontario International on Sun, Apr 26, arriving in Los Angeles International.Inbound indirect flight with Alaska Airlines, departing from Los Angeles International on Sun, May 3, arriving in Ontario International.Price includes taxes and charges.From $508, select.

Find the cheapest month to fly from Ontario International to Los Angeles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Los Angeles flights are currently cheapest in January.
Dec
from $346
Jan
from $127
Feb
from $164
Mar
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Apr
from $219
May
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Jun
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Jul
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Aug
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Sep
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Oct
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Nov
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Alternative Ontario International to Los Angeles routes

Looking for the cheapest, fastest or easiest route from Ontario International to Los Angeles? You could fly into the following airports instead.

Ontario to Los Angeles: Flight information

The things to know before you go.
Cheapest flight found$127
Cheapest month to flyJanuary

Finding cheap flights from Ontario International to Los Angeles: Frequently asked questions

There are 7 airports in Los Angeles: Hawthorne, Burbank, Los Angeles International, Long Beach Municipal, Los Angeles Van Nuys, Santa Ana John Wayne, and Ontario International.
The best price we found for a round-trip flight from Ontario International to Los Angeles is $127. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Ontario International to Los Angeles. But we found flights with one or more stops from $127.
There are no flights flying from Ontario International to Los Angeles, as of December 2025.
The cheapest month to fly from Ontario International to Los Angeles is usually January.
If you're flying from Ontario International Airport, the cheapest airport near Los Angeles is Los Angeles International – which is 19.6 km away from the center of Los Angeles. We've found flights to this airport from $127.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Los Angeles on Tuesday, January 6, 2026.
No airlines currently offer direct flights between Ontario International Airport and Los Angeles. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Los Angeles but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Los Angeles is around 40 days in advance, so don’t leave your flight to the last minute.
In December, the average temperature is usually around 12°C. August is typically the warmest month in Los Angeles, when it usually averages around 30°C. You can expect the least rain in August. The coldest month is December, with temperatures averaging 7°C. The rainiest month is February.
Currently, Frontier Airlines offers the cheapest flight tickets to Los Angeles.

Flying from Ontario International Airport (ONT) to Los Angeles: what you need to know

  • Ontario (the location of Ontario International Airport) and Los Angeles follow the same timezone — UTC-7.

  • To avoid missing your ONT to Los Angeles flight, leave enough time for things like baggage drop and finding your gate. Turning up two hours before international departures and an hour before domestic flights is the standard rule.

  • Heading away during a peak period like school or public holidays? Expect longer lines at security and check-in. For peace of mind, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • The journey from central Ontario to ONT takes around 1 hour 30 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 5 kilometers in 10 minutes or so, depending on traffic conditions.

  • Looking for a hotel near ONT? If you're catching an early flight from Ontario International Airport to Los Angeles, these accommodation options will put you moments from your departure lounge:

  • Ontario International Airport has a strong on-time record, so flight disruptions are less likely. Departures from ONT land at their destination as scheduled 83.6% of the time.

  • You'll find ONT at 2900 E. Airport Drive.

How to find the cheapest flights from Ontario International Airport (ONT) to Los Angeles

  • $62 is currently the best price for a one-way Ontario International Airport to Los Angeles flight. Return flight tickets start from $127. These prices can change depending on availability.

  • Don't leave everything to the last moment. You're more likely to pick up cheap flights from ONT to Los Angeles if you book in advance. Airlines often have some great early bird deals.

  • If you're willing to be flexible with your travel plans, use the 'Whole month' tool. It'll give you the lowest price across each month when looking for an Ontario International Airport to Los Angeles ticket.

  • Locking in a cheap flight from ONT to Los Angeles is a breeze with Price Alerts. All you need to do is set up one of these automatic notifications and we'll notify you as soon as a new discount appears.

  • Tailor your flights with filters. Pick your ideal departure and arrival times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from Ontario International Airport to Los Angeles.

Airports in Los Angeles

Los Angeles International Airport (LAX)

  • Los Angeles International Airport (LAX) is around 32 kilometers from central Los Angeles. If you're grabbing a cab or a ride-share, the drive will take roughly 30 minutes.

  • Traveling on public transport takes about 55 minutes.

  • If you have a late flight from Ontario International Airport to Los Angeles, nothing beats the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and snoozing not long after at one of these accommodation options near LAX:

  • Travel at your own pace with a Los Angeles International Airport rental car. Pick up your wheels from Dollar, Thrifty or Hertz and see more of Los Angeles and beyond.

  • Lock in the best rate by booking your ride from Los Angeles International Airport around one week before your flight from ONT to Los Angeles.

  • The address for LAX is One World Way.

Van Nuys Airport (VNY)

  • After your flight from Ontario International Airport to Los Angeles has landed, you can make your way to the city center in about 35 minutes by car. Central Los Angeles is roughly 32 kilometers from Van Nuys Airport (VNY).

  • If you travel by public transport, the ride to the center will take you 1 hour 40 minutes or so.

  • Place the 'Do not disturb' sign on your door and unwind at a hotel near VNY. Here are a few options where you can tuck yourself in after your ONT to Los Angeles flight:

  • No time to waste? The fastest way to get to where you're going is with a Van Nuys Airport rental car. Collect a set of wheels from Budget, Dollar or Hertz and set off in the blink of an eye.

  • Avoid filling out forms at the rental desk by having everything prearranged. Secure your ride from VNY a few weeks in advance so you can just collect the keys and drive away.

Best time to go to Los Angeles

  • Carefully consider your travel dates before securing your flight from Ontario International Airport to Los Angeles. The city comes alive in high season, but hotel prices are generally higher and major attractions can get busy. Visit Los Angeles in the low season for a quieter vibe.

  • When booking your Ontario International Airport to Los Angeles flight ticket, think about the kind of weather forecast you're hoping for. August is the warmest month in Los Angeles, with temperatures ranging from 16ºC (61ºF) to 32ºC (90ºF).

  • If you'd rather travel in cooler conditions, look for a cheap ticket from ONT to Los Angeles in February when temperatures average between 6ºC (43ºF) and 26ºC (79ºF).

More about Los Angeles

  • After booking your flight from Ontario International Airport to Los Angeles, choose a hotel that puts you right where the action is. Make one of these accommodation options your base for exploring Los Angeles:

  • All great journeys should include a little sightseeing. The Broad, Griffith Observatory and La Brea Tar Pits & Museum are must-do's during your Los Angeles adventure.

Explore more of United States

  • You've visited Los Angeles, now it's time to explore more of United States. Journey around 177 kilometers south-east to San Diego to tick off its top sights. From San Diego Zoo to USS Midway Museum and SeaWorld San Diego, you'll have a packed itinerary ahead.

  • Around 499 kilometers north-west of Los Angeles, San Jose is another favorite stop in United States. Experience the best of this destination with a visit to Winchester Mystery House, Rosicrucian Egyptian Museum and San Jose Museum of Art.

Plan the rest of your trip from Ontario to Los Angeles

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.