$141 Cheap Delta flights Tampa (TPA) to Ontario (ONT)

View $141 flight on Sat, Feb 28, 2026Opens in a new window

$141 Cheap Delta flights Tampa (TPA) to Ontario (ONT)

Prices were available within the past 7 days and start at $141 for one-way flights and $261 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Jan 7 - Wed, Jan 14
TPA
Tampa
ONT
Ontario
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jan 7 from Tampa to Ontario, returning Wed, Jan 14, priced at $261 found 1 day ago
Delta
Wed, Jan 14 - Sun, Jan 18
TPA
Tampa
ONT
Ontario
$280 Roundtrip, found 1 day ago
$280
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jan 14 from Tampa to Ontario, returning Sun, Jan 18, priced at $280 found 1 day ago
Flights from Tampa (TPA) to Ontario (ONT)
Origin airport
Tampa Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Popular airline
American Airlines
Distance
2107 mi

Frequently asked questions

How much is a Delta Air Lines flight from Tampa Intl. Airport (TPA) to Los Angeles - Ontario Intl. Airport (ONT)?
You can find budget-friendly return Delta Air Lines flights from $261 from TPA to ONT by sorting your results from "Price (lowest to highest)" on Expedia. Or look for bargains from $141 for a one-way trip.**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 TPA to ONT with Delta Air Lines?
Delta Air Lines flights to Ontario are often cheaper in the quieter months of January and April. Whether you're searching for a return or one-way ticket, you could score a better deal then.
What is the cheapest time to book flights from Tampa Intl. Airport (TPA) to Los Angeles - Ontario Intl. Airport (ONT) with Delta Air Lines?
Start searching one to three months before your departure to find cheaper fares on Delta Air Lines flights from Tampa Intl. Airport (TPA) to Los Angeles - Ontario Intl. Airport (ONT). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic trips.*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 Tampa Intl. Airport (TPA) to Los Angeles - Ontario Intl. Airport (ONT)?
To find out if there's a direct journey from TPA to ONT with Delta Air Lines or any other carriers, check the "Nonstop" box when searching for tickets.
What is the earliest Delta Air Lines flight from TPA to ONT?
Sort your results by "Early Morning" and "Morning" to browse the earliest flights from TPA to ONT. Leaving early means you're 20% less likely to experience 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?
Delta Air Lines flights from Tampa Intl. Airport (TPA) to Ontario land at Los Angeles - Ontario Intl. Airport (ONT). This is the main entry point here.
Why fly with Delta Air Lines from TPA to ONT?
Traveling from TPA to ONT with Delta Air Lines comes with a host of benefits, including a rewarding loyalty program and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That's on top of 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 Tampa Intl. Airport (TPA) to Los Angeles - Ontario Intl. Airport (ONT)?
Changes are generally free within 24 hours of making a booking, but your airline may add a charge after that. For further information about altering your flights, go to your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to update your itinerary without additional costs, apply the "Changes included" and "No cancel fee" filters when planning your next trip.

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*Available to One Key members.