Direct (nonstop) flights from Atlanta to Ontario
1 airline flys nonstop from Hartsfield–Jackson Atlanta International Airport (ATL) to Ontario International Airport (ONT). It's 1,898 miles (3,055 km), about 4h 43m in the air. Operated by Delta Air Lines.
Delta Air Lines
Route data last updated: May 27, 2026
Airlines with non-stop flights
DL
Delta Air Lines
Alternative Routes
Other ways to fly from Atlanta to Ontario with one stop · direct emits 321 kg CO₂ per passenger
Looking for the return flight?
ONT → ATL: Flights from Ontario to AtlantaOther direct flights from Atlanta
Direct flights from Ontario (ONT)
Frequently Asked Questions
How long is the direct flight from Atlanta to Ontario?
A nonstop flight from Atlanta (ATL) to Ontario (ONT) takes approximately 4 hours and 43 minutes. The distance is 1,898 miles (3,055 km).
Which airlines fly nonstop from Atlanta to Ontario?
Just Delta Air Lines.
Is there a nonstop flight from Atlanta to Ontario?
Yes. 1 airline: Delta Air Lines.
How far is Atlanta from Ontario?
The flight distance from Atlanta to Ontario is 1,898 miles (3,055 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Los Angeles.
What type of aircraft flies from Atlanta to Ontario?
At 4h 43m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Atlanta to Ontario?
Roughly 321 kg CO2 per passenger one-way. That's about the same as driving 1,605 km.
Is the return flight from Ontario to Atlanta also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Atlanta to Ontario?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Hartsfield–Jackson Atlanta International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.