
$137 Cheap Frontier Airlines flights from Atlanta to Ontario (ATL to ONT)
Find The Best Day To Fly from Atlanta to Ontario
Amazing Frontier Airlines ATL to ONT Flight Deals
The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were $252 round trip and $137 one way. Prices and availability subject to change. Additional terms may apply.
ONT From ATL Economy Coach Packages on Similar Airlines



Frequently asked questions
Discover our best Frontier Airlines flight from Atlanta ATL to Ontario ONT
To find the best deals on flights to Atlanta from Ontario with Frontier Airlines, just enter your travel dates, filter by Frontier Airlines, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.
Return flights from Atlanta ATL to Ontario ONT with Frontier Airlines
If you’re planning a round trip, booking return flights with Frontier Airlines is usually the most cost-effective option. With airfares ranging from $252 to $274, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply.
Book one-way Frontier Airlines flights from Atlanta ATL to Ontario ONT
A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Frontier Airlines flight from Atlanta to Ontario costs from $137. Prices and availability subject to change. Additional terms may apply.
The easy way to find cheap flights to Ontario ONT from Atlanta ATL with Frontier Airlines
To find a cheap Frontier Airlines flight from Atlanta ATL to Ontario ONT, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference.
How to find our best airfare deals on Frontier Airlines flights from Atlanta ATL to Ontario ONT
If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as July, or if you book a flight with a stopover.
Find nonstop flights from Atlanta ATL to Ontario ONT with Frontier Airlines
If you’re keen to be on Ontario soil fast, don’t waste time with a stopover—filter your search results to show direct Frontier Airlines flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it.
Flexible airline tickets for Frontier Airlines flights from Atlanta ATL to Ontario ONT
Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.
There are a lot of reasons to book your flights to Ontario ONT from Atlanta ATL with Frontier Airlines on Travelocity
At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.
Airport code | Country | Airport name | Number of flights |
---|---|---|---|
DEN | USA | Denver Intl. | 13 |
MCO | USA | Orlando Intl. | 7 |
CUN | MEX | Cancun Intl. | 6 |
GDL | MEX | Don Miguel Hidalgo y Costilla Intl. | 5 |
PHL | USA | Philadelphia Intl. | 2 |
ORD | USA | O'Hare Intl. | 2 |
MIA | USA | Miami Intl. | 1 |
LAS | USA | McCarran Intl. | 1 |
MEX | MEX | Mexico City Intl. | 1 |
LAX | USA | Los Angeles Intl. | 1 |
Travelers ❤️ these 🏨 after their flight to Ontario

Reviewed on Jul 9, 2025

Reviewed on Jul 9, 2025

Reviewed on Jul 9, 2025
Popular Frontier Airlines Flight Routes from ATL
Top Frontier Airlines Flight Routes from ONT
Top Flights for Frontier Airlines originating from ATL
Domestic
- Dallas to Las Vegas (DFW - LAS)
- Atlanta to New York (ATL - LGA)
- New York to Miami (JFK - MIA)
- Los Angeles to Las Vegas (LAX - LAS)
- Newark Liberty Intl. Airport to San Juan (EWR - SJU)
- Newark Liberty Intl. Airport to Orlando (EWR - MCO)
- San Francisco to New York (SFO - JFK)
- Los Angeles to Las Vegas (LAX - LAS)
- Atlanta to New York (ATL - LGA)
- New York to Los Angeles (JFK - LAX)
International
- Baltimore to San Juan (BWI - SJU)
- Los Angeles to Las Vegas (LAX - LAS)
- Los Angeles to New York (LAX - JFK)
- New York to San Juan (JFK - SJU)
- Newark Liberty Intl. Airport to San Juan (EWR - SJU)
- San Francisco to Los Angeles (SFO - LAX)
- Atlanta to New York (ATL - JFK)
- Los Angeles to New York (LAX - LGA)
- New York to San Juan (JFK - SJU)
- Dallas to New York (DFW - LGA)
Most Popular
- Atlanta to Miami (ATL - MIA)
- Los Angeles to Chicago (LAX - ORD)
- Los Angeles to London (LAX - LHR)
- Los Angeles to Atlanta (LAX - ATL)
- Los Angeles to Cancun (LAX - CUN)
- Dallas to Atlanta (DFW - ATL)
- Los Angeles to Paris (LAX - CDG)
- Los Angeles to Orlando (LAX - MCO)
- Boston to Los Angeles (BOS - LAX)
- Philadelphia to Atlanta (PHL - ATL)
- Los Angeles to Miami (LAX - MIA)
- Los Angeles to Honolulu (LAX - HNL)
- Delta Atlanta (ATL) to Las Vegas (LAS) flights
- Los Angeles to Dallas (LAX - DFW)
- Chicago to Atlanta (ORD - ATL)
- Los Angeles to New York (LAX - JFK)
- San Francisco to Los Angeles (SFO - LAX)
- New York to Los Angeles (JFK - LAX)
- Atlanta to Los Angeles (ATL - LAX)
- San Francisco to New York (SFO - JFK)
- New York to Atlanta (JFK - ATL)
- Air India San Francisco (SFO) to Delhi (DEL) flights
- Los Angeles to Boston (LAX - BOS)
- Atlanta to Dallas (ATL - DFW)
- Chicago to Los Angeles (ORD - LAX)
- New York to San Francisco (JFK - SFO)
- Los Angeles to Seattle (LAX - SEA)
- Los Angeles to San Francisco (LAX - SFO)
- Atlanta to Orlando (ATL - MCO)
- Dallas to Los Angeles (DFW - LAX)