Cheap Flights from Ontario (ONT) to Thermal (TRM)

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Thermal, CA (TRM-Jacqueline Cochran Regional)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key
Flights from Ontario (ONT) to Thermal (TRM)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Jacqueline Cochran Regional
Distance
87 mi

Ontario to Thermal Flights

The cheapest times to fly from Ontario to Thermal

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Thermal are during the month of . You can find some of the cheapest flights from Ontario to Thermal with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Thermal

Sunday is one of the best days to book for cheap flights from Ontario to Thermal: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Thermal

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Thermal in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Thermal flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Thermal airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM) cost?
Lock in a cheap one-way flight or cheap return flight from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM)?
Planning your trip for is a great way to save, as it's the cheapest month for flights between ONT and TRM. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM)?
To find the cheapest airline that'll fly you from ONT to TRM, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM)?
You'll have to catch a flight with a layover when traveling from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from ONT to TRM?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM)?
Opt for a flight from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM) that leaves before 3 PM to reduce the likelihood of delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM) last-minute?
Last-minute bookings from ONT to TRM are typically more expensive. To lock in the best prices, start looking for flights well ahead of time. That said, if you're flexible with your travel dates, you may land a cheap ticket just before your departure.
Is it cheaper to book an ONT to TRM flight and hotel package?
Compared with arranging flights and hotels separately, booking an ONT to TRM flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the hassle out of travel planning. Simply pick your flights and choose from our wide range of hotels, then tailor your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Jacqueline Cochran Regional Airport (TRM)?
In most cases, you can reschedule or cancel your ONT to TRM flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you want further information, visit our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.