Skip to main content

Route

Ontario → Atlanta

ONTOntarioOntario International Airport
ATLAtlantaHartsfield Jackson Atlanta International Airport
Distance
1,895 mi
Estimated flight time
~4h 20m

Atlanta is currently 3 hours ahead of Ontario.

Observed nonstop

View the reverse route

How often does this route fly?

Frequency

A couple of times a day

On average around 2.5 flights a day, observed from October 2025 to September 2026.

2.5
flights per day
3
busiest month · Oct
2
quietest month · Jan
3 hr 39 min
measured flight time
12 / 12
months seen

Through the year

Per day, month by month

  1. 2Jan2026
  2. 2Feb
  3. 2Mar
  4. 2Apr
  5. 3May
  6. 3Jun
  7. 3Jul
  8. 2Aug
  9. 2Sep
  10. 3Oct2025
  11. 3Nov
  12. 3Dec

Airlines

Who flies it

Delta Air Linesall year

Through the day

Departure times

Local time in Ontario. Most departures between 11:00 and 14:00.

  1. 00:00
  2. 01:00
  3. 02:00
  4. 03:00
  5. 04:00
  6. 05:00
  7. 06:00
  8. 07:00
  9. 08:00
  10. 09:00
  11. 10:00
  12. 11:00
  13. 12:00
  14. 13:00
  15. 14:00
  16. 15:00
  17. 16:00
  18. 17:00
  19. 18:00
  20. 19:00
  21. 20:00
  22. 21:00
  23. 22:00
  24. 23:00

Through the week

By weekday

  1. 2.5Mon
  2. 2.6Tue
  3. 2.3Wed
  4. 2.3Thu
  5. 2.4Fri
  6. 2.4Sat
  7. 2Sun

Fleet

Aircraft observed

  1. Airbus A321A321101%
All the numbers in a table
MonthPer daySeenAirlines
January 2026254
  • Delta Air Lines54×
February 2026255
  • Delta Air Lines55×
March 2026255
  • Delta Air Lines55×
April 2026273
  • Delta Air Lines72×
May 2026382
  • Delta Air Lines82×
June 2026376
  • Delta Air Lines76×
July 2026379
  • Delta Air Lines79×
August 2026274
  • Delta Air Lines73×
September 2026269
  • Delta Air Lines69×
October 2025382
  • Delta Air Lines82×
November 2025376
  • Delta Air Lines76×
December 2025377
  • Delta Air Lines77×

Airlines observed on this route

From observed callsign routes on ONT-ATL - not a booking guarantee.

Delta Air Lines

DL · DAL

Hub: ATL Atlanta

221 departure airportsView airline →

About this route

  • Domestic route: both airports are in the same country.
  • The opposite direction has also been observed as a direct connection.
  • Direct destinations observed from Ontario: 63.
  • Direct destinations observed from Atlanta: 203.

The airports on this route

Ontario International Airport

Ontario, United StatesONT / KONT

Major airport · 63 direct destinations · 2 runways · longest runway 12,198 ft

78 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Hartsfield Jackson Atlanta International Airport

Atlanta, United StatesATL / KATL

International hub · 203 direct destinations · 5 runways · longest runway 12,388 ft

70 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Alternative airports for this journey

Same journey, a different airport nearby - with an observed direct connection.

SNA ATLJohn Wayne Orange County International AirportSanta Ana is about 30 mi from Ontario.View route →BUR ATLHollywood Burbank/Bob Hope AirportBurbank is about 45 mi from Ontario.View route →LAX ATLLos Angeles International AirportLos Angeles is about 47 mi from Ontario.View route →PSP ATLPalm Springs International AirportPalm Springs is about 65 mi from Ontario.View route →

About the route from Ontario to Atlanta

The observed direct connection between Ontario International Airport (ONT) and Hartsfield Jackson Atlanta International Airport (ATL) covers approximately 1,895 mi. The estimated flight time is around 4h 20m. Delta Air Lines has been observed on this connection in the available route data.

Frequently asked questions about this route

How far is Ontario from Atlanta by air?
The great-circle distance between Ontario International Airport and Hartsfield Jackson Atlanta International Airport is approximately 1,895 mi.
How long is the flight from Ontario to Atlanta?
Based on the distance, the estimated flight time is about 4h 20m. This is an estimate, not a schedule.
Is there a direct connection from Ontario to Atlanta?
Yes, a direct connection between ONT and ATL has been observed in our route data.
Which airlines have been observed on this route?
In the available route data: Delta Air Lines.
How often is there a flight from Ontario to Atlanta?
On average around 2.5 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 852 observed flights. Mainly Delta Air Lines. That is an observation, not a timetable.
What is the current time difference between Ontario and Atlanta?
Atlanta is currently 3 hours ahead of Ontario.

Where this data comes from

The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.

The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.

Route data updated on October 11, 2026.