Which airlines fly the Airbus A321 (all variants) from ATL to ONT?

See the operators list on this page — it is compiled from open ADS-B observed-flights data updated nightly. Operators with the most recent observations are listed first.

How often is the Airbus A321 (all variants) used on the ATL to ONT route?

Observed model variants and date ranges are listed below. Aircraft assignments can change seasonally; data refreshes nightly.

What is the typical schedule for Airbus A321 (all variants) flights from Atlanta to Ontario?

Schedules vary by operator. For live schedules and fares, search by aircraft on the FlightFinder home page.

Where does this data come from?

Operator and aircraft observations come from the adsb.lol open ADS-B network under the Open Database License. Data refreshes nightly.

Atlanta to Ontario on the Airbus A321 (all variants)

ATL → ONT · operated by the Airbus A321 (all variants)

Distance: 3,050 km (1,895 mi)
Est. flight time: ~3h 55m
Operators on Airbus A321 (all variants): 1
Observations (14 days): 1

Airlines operating the Airbus A321 (all variants) on ATL → ONT

Airline	Observations	First seen	Last seen
Delta Air Lines	1	2026-05-20	2026-05-20

About the Airbus A321 (all variants) on this route

The Airbus A321 (all variants) is used by 1 operator on Atlanta → Ontario.

For specifications, safety record, and global deployment data, see the Airbus A321 (all variants) family page or the Airbus A321 (all variants) safety record.

Airport details

Departure: Hartsfield Jackson Atlanta International Airport (ATL)

City: Atlanta
Country: United States
IATA / ICAO: ATL / KATL

Arrival: Ontario International Airport (ONT)

City: Ontario
Country: United States
IATA / ICAO: ONT / KONT

Frequently asked questions

Which airlines fly the Airbus A321 (all variants) on the ATL-ONT route?

Airlines observed operating the Airbus A321 (all variants) on ATL to ONT include: Delta Air Lines.

How often does the Airbus A321 (all variants) fly ATL-ONT?

The Airbus A321 (all variants) was observed 1 time on the ATL–ONT route in the last 14 days across 1 operator.

What's the distance from Atlanta to Ontario?

The great-circle distance from Atlanta (ATL) to Ontario (ONT) is approximately 3,050 km (1,895 miles). Estimated flight time is ~3h 55m.

What other aircraft fly the ATL-ONT route?

No other aircraft families were observed on the ATL–ONT route in the last 14 days.

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