Atlanta (ATL) to Ontario (ONT) flights
One airline flies nonstop from Atlanta (ATL) to Ontario (ONT): Delta Air Lines. The two airports are 1,895 miles (3,049 km) apart. Delta Air Lines is in SkyTeam. There are also 23 ways to fly it with one stop, through Phoenix, Dallas and Dallas and more.
Airlines flying nonstop from ATL to ONT
- Delta Air LinesSkyTeam · bookable with 8 programsWho books it
Book ATL to ONT with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Aeromexico RewardsBooks Delta Air Lines
- Air France-KLM Flying BlueBooks Delta Air Lines
- China Eastern Eastern MilesBooks Delta Air Lines
- Delta SkyMilesBooks Delta Air Lines
- Garuda Indonesia GarudaMilesBooks Delta Air Lines
- Korean Air SKYPASSBooks Delta Air Lines
- SAS EuroBonusBooks Delta Air Lines
- Virgin Atlantic Flying ClubBooks Delta Air Lines
ATL to ONT with one stop
23 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Phoenix (PHX)American Airlines and Southwest Airlines the whole way
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- Via Dallas (DFW)American Airlines and Frontier Airlines the whole way
- Via Dallas (DAL)Southwest Airlines the whole way
- Via Las Vegas (LAS)Frontier Airlines and Southwest Airlines the whole way
- Via Nashville (BNA)Southwest Airlines the whole way
- Via Austin (AUS)Southwest Airlines the whole way
- Via Denver (DEN)Frontier Airlines, United Airlines and 1 more the whole way+1
- Via Houston (IAH)United Airlines and Frontier Airlines the whole way
- Via Houston (HOU)Southwest Airlines the whole way
- Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via Chicago (MDW)Southwest Airlines the whole way
- Via Chicago (ORD)American Airlines and United Airlines the whole way+1
- Via Charlotte (CLT)American Airlines the whole way
- Via San Jose (SJC)Delta Air Lines, then Southwest Airlines
- Via Sacramento (SMF)Delta Air Lines, then Southwest Airlines and Frontier Airlines
ATL to ONT: common questions
Which airlines fly nonstop from ATL to ONT?
Delta Air Lines (SkyTeam) flies nonstop from Atlanta (ATL) to Ontario (ONT).
How far is Atlanta from Ontario by plane?
Atlanta (ATL) and Ontario (ONT) are 1,895 miles (3,049 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book ATL to ONT award flights?
8 programs can book at least one of the nonstop airlines: Aeromexico Rewards, Air France-KLM Flying Blue, China Eastern Eastern Miles, Delta SkyMiles, Garuda Indonesia GarudaMiles, Korean Air SKYPASS, SAS EuroBonus and Virgin Atlantic Flying Club. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does ATL to ONT cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for ATL to ONT with taxes and fees.
Where can I connect between Atlanta and Ontario?
The most direct connections are through Phoenix (PHX), Dallas (DFW), Dallas (DAL), Las Vegas (LAS) and Nashville (BNA). On 18 of them the same airline flies both flights, for example American Airlines through Phoenix.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.