$118 Cheap Flights from Ontario (ONT) to Redmond (RDM)

View $118 flight on Thu, Oct 16, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Redmond Municipal Airport (RDM)

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Cheap Flights from Ontario to Redmond (ONT-RDM)

Prices were available within the past 7 days and start at $118 for one-way flights and $231 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Sep 9 - Tue, Sep 9
ONT
Ontario
RDM
Redmond
$231 Roundtrip, found 14 hours ago
$231
Roundtrip
found 14 hours ago
Select Alaska Airlines flight, departing Tue, Sep 9 from Ontario to Redmond, returning Tue, Sep 9, priced at $231 found 14 hours ago
Bargain Flight
Thu, Jul 31 - Mon, Aug 4
ONT
Ontario
RDM
Redmond
$233 Roundtrip, found 23 hours ago
$233
Roundtrip
found 23 hours ago
Select Bargain Flight flight, departing Thu, Jul 31 from Ontario to Redmond, returning Mon, Aug 4, priced at $233 found 23 hours ago
Bargain Flight
Thu, Aug 14 - Mon, Aug 18
ONT
Ontario
RDM
Redmond
$235 Roundtrip, found 1 hour ago
$235
Roundtrip
found 1 hour ago
Select Bargain Flight flight, departing Thu, Aug 14 from Ontario to Redmond, returning Mon, Aug 18, priced at $235 found 1 hour ago
Alaska Airlines
Sat, Aug 2 - Sat, Aug 9
ONT
Ontario
RDM
Redmond
$236 Roundtrip, just found
$236
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Aug 2 from Ontario to Redmond, returning Sat, Aug 9, priced at $236 just found
United
Mon, Aug 11 - Wed, Aug 13
ONT
Ontario
RDM
Redmond
$237 Roundtrip, found 1 hour ago
$237
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Aug 11 from Ontario to Redmond, returning Wed, Aug 13, priced at $237 found 1 hour ago
Delta
Wed, Aug 27 - Sat, Aug 30
ONT
Ontario
RDM
Redmond
$237 Roundtrip, found 9 hours ago
$237
Roundtrip
found 9 hours ago
Select Delta flight, departing Wed, Aug 27 from Ontario to Redmond, returning Sat, Aug 30, priced at $237 found 9 hours ago
American Airlines
Tue, Aug 12 - Sat, Aug 16
ONT
Ontario
RDM
Redmond
$237 Roundtrip, just found
$237
Roundtrip
just found
Select American Airlines flight, departing Tue, Aug 12 from Ontario to Redmond, returning Sat, Aug 16, priced at $237 just found
American Airlines
Thu, Sep 25 - Mon, Sep 29
ONT
Ontario
RDM
Redmond
$238 Roundtrip, found 8 hours ago
$238
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Sep 25 from Ontario to Redmond, returning Mon, Sep 29, priced at $238 found 8 hours ago
Delta
Thu, Aug 14 - Mon, Aug 18
ONT
Ontario
RDM
Redmond
$239 Roundtrip, found 1 hour ago
$239
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Aug 14 from Ontario to Redmond, returning Mon, Aug 18, priced at $239 found 1 hour ago
Bargain Flight
Tue, Aug 19 - Sun, Aug 24
ONT
Ontario
RDM
Redmond
$244 Roundtrip, found 4 days ago
$244
Roundtrip
found 4 days ago
Select Bargain Flight flight, departing Tue, Aug 19 from Ontario to Redmond, returning Sun, Aug 24, priced at $244 found 4 days ago

Find the cheapest month to fly from Ontario (ONT) to Redmond (RDM)

January is typically the cheapest month to fly

From $201 - $431 per traveler.

Graph displaying average flight prices per month

Flights from Ontario (ONT) to Redmond (RDM)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Robert's Field
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$230
Distance
729 mi

Ontario to Redmond Flights

The cheapest times to fly from Ontario to Redmond

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 Redmond are during the month of September. You can find some of the cheapest flights from Ontario to Redmond with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Redmond

Sunday is one of the best days to book for cheap flights from Ontario to Redmond: 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 Redmond

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 Redmond in 2025. You can also book with separate airlines for your outbound and return journeys, from $118 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 Redmond 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 Redmond 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 Robert's Field Airport (RDM) cost?
Discover the latest flight deals from ONT to RDM by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ONT to RDM?
The cheapest flights from ONT to RDM are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to Robert's Field Airport (RDM)?
Although Ontario, CA (ONT-Los Angeles - Ontario Intl.) doesn't have any direct flights to Robert's Field Airport (RDM), other airports have nonstop routes. Taking off from Los Angeles Intl. Airport (LAX) will get you to Redmond without any detours.
What is the cheapest airline that flies from ONT to RDM?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ONT to RDM. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Robert's Field Airport (RDM)?
Direct flights from Los Angeles - Ontario Intl. Airport (ONT) to Robert's Field Airport (RDM) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ONT to RDM?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can change depending on the time of year, carrier and other factors.*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 Robert's Field Airport (RDM)?
Choose a flight from Los Angeles - Ontario Intl. Airport (ONT) to Robert's Field Airport (RDM) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**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 Robert's Field Airport (RDM) last-minute?
Booking your plane ticket from ONT to RDM shortly before your journey is generally more expensive. However, if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book an ONT to RDM flight and hotel package?
Booking an ONT to RDM flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our impressive range of stays and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Robert's Field Airport (RDM)?
If you reserved your ONT to RDM flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

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*Available to One Key members.