$130 Cheap Delta flights Medford (MFR) to Ontario (ONT)

View $130 flight on Sat, Oct 11, 2025Opens in a new window

$130 Cheap Delta flights Medford (MFR) to Ontario (ONT)

Prices were available within the past 7 days and start at $130 for one-way flights and $239 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Feb 24 - Wed, Mar 11
MFR
Medford
ONT
Ontario
$239 Roundtrip, found 2 days ago
$239
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Feb 24 from Medford to Ontario, returning Wed, Mar 11, priced at $239 found 2 days ago
Delta
Sat, Oct 18 - Sat, Nov 1
MFR
Medford
ONT
Ontario
$244 Roundtrip, found 3 days ago
$244
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Oct 18 from Medford to Ontario, returning Sat, Nov 1, priced at $244 found 3 days ago
Delta
Wed, Oct 22 - Mon, Nov 10
MFR
Medford
ONT
Ontario
$246 Roundtrip, found 3 days ago
$246
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Oct 22 from Medford to Ontario, returning Mon, Nov 10, priced at $246 found 3 days ago
Delta
Thu, Oct 23 - Mon, Nov 10
MFR
Medford
ONT
Ontario
$248 Roundtrip, found 3 days ago
$248
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Oct 23 from Medford to Ontario, returning Mon, Nov 10, priced at $248 found 3 days ago
Delta
Tue, Dec 2 - Tue, Dec 9
MFR
Medford
ONT
Ontario
$251 Roundtrip, found 3 days ago
$251
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Dec 2 from Medford to Ontario, returning Tue, Dec 9, priced at $251 found 3 days ago
Delta
Fri, Oct 17 - Sat, Nov 1
MFR
Medford
ONT
Ontario
$251 Roundtrip, found 3 days ago
$251
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, Oct 17 from Medford to Ontario, returning Sat, Nov 1, priced at $251 found 3 days ago
Flights from Medford (MFR) to Ontario (ONT)
Origin airport
Rogue Valley Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Popular airline
Alaska Airlines
Distance
641 mi

Frequently asked questions

How much is a Delta Air Lines flight from Rogue Valley Intl. Airport (MFR) to Los Angeles - Ontario Intl. Airport (ONT)?
Apply the "Price (lowest to highest)" filter on Expedia to find cheap Delta Air Lines return flights from $239 from MFR to ONT. Affordable one-way options from $130 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from MFR to ONT with Delta Air Lines?
Search for one-way or return flights to Ontario in January or April. You could find an affordable fare with Delta Air Lines during these off-peak travel months.
What is the cheapest time to book flights from Rogue Valley Intl. Airport (MFR) to Los Angeles - Ontario Intl. Airport (ONT) with Delta Air Lines?
For cheap Delta Air Lines fares from Rogue Valley Intl. Airport (MFR) to Los Angeles - Ontario Intl. Airport (ONT), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the price you pay. Sunday tends to be the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Rogue Valley Intl. Airport (MFR) to Los Angeles - Ontario Intl. Airport (ONT)?
To figure out if there's a direct route from MFR to ONT with Delta Air Lines or other carriers, check the "Nonstop" filter when looking for tickets.
What is the earliest Delta Air Lines flight from MFR to ONT?
Search Delta Air Lines's earliest flights from MFR to ONT by selecting the "Early Morning" and "Morning" filters. Not only will you get to your destination sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Ontario?
Catch a Delta Air Lines flight from Rogue Valley Intl. Airport (MFR) to Ontario, and you'll most likely come in to Los Angeles - Ontario Intl. Airport (ONT). This is the airline's primary hub here.
Why fly with Delta Air Lines from MFR to ONT?
Jetting off from MFR to ONT with Delta Air Lines means enjoying plenty of perks, including an excellent in-flight experience and a rewarding loyalty program. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to use on select future travel purchases. That's in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Rogue Valley Intl. Airport (MFR) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, you can reschedule or cancel your flight, although additional fees may apply if you booked over 24 hours ago. Need to keep your options open? Apply the "Changes included" or "No cancel fee" filter to find flights that won't charge you extra if you have to alter your plans. To update your itinerary, go to "Trips," select your flight and click on "Manage Booking" for more information.

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*Available to One Key members.