Ontario International ⇄ Hartsfield/Jackson Atlanta International ONT–ATL
Airlines flew 1,841 flights between Ontario International ONT in Ontario, CA and Hartsfield/Jackson Atlanta International ATL in Atlanta, GA in the twelve months to July 2026, both directions together: 304,263 passengers in 348,698 seats, 87% of them filled, and 75,499 pounds of freight. 1,900 miles, about 221 minutes in the air, on 3 airlines: Delta Air Lines Inc. (1,836), Southwest Airlines Co. (3), Alaska Airlines Inc. (2). Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 125 |
| 2/25 | 112 |
| 3/25 | 122 |
| 4/25 | 153 |
| 5/25 | 162 |
| 6/25 | 162 |
| 7/25 | 172 |
| 8/25 | 162 |
| 9/25 | 157 |
| 10/25 | 171 |
| 11/25 | 166 |
| 12/25 | 170 |
| 1/26 | 123 |
| 2/26 | 112 |
| 3/26 | 118 |
| 4/26 | 155 |
| 5/26 | 183 |
| 6/26 | 155 |
| 7/26 | 169 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 19,698 |
| 2/25 | 18,047 |
| 3/25 | 20,108 |
| 4/25 | 24,907 |
| 5/25 | 26,041 |
| 6/25 | 27,118 |
| 7/25 | 28,717 |
| 8/25 | 27,207 |
| 9/25 | 26,103 |
| 10/25 | 27,848 |
| 11/25 | 25,718 |
| 12/25 | 28,167 |
| 1/26 | 19,299 |
| 2/26 | 18,015 |
| 3/26 | 19,661 |
| 4/26 | 25,510 |
| 5/26 | 30,462 |
| 6/26 | 26,851 |
| 7/26 | 29,422 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Delta Air Lines Inc. DL | 1,836 | 303,827 | 87% | scheduled passenger service |
| Southwest Airlines Co. WN | 3 | 180 | 37% | scheduled passenger service |
| Alaska Airlines Inc. AS | 2 | 256 | 72% | charter passenger service, scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Airbus Industrie A321Neoxlr | 1,834 | 189 | 303,479 |
| Airbus Industrie A321-200n | 2 | 194 | 348 |
| Boeing B737 Max 900 | 2 | 178 | 256 |
| Boeing 737-700/700LR/Max 7 | 1 | 137 | 12 |
| Boeing 737-800 | 1 | 175 | 154 |
| Boeing B737 Max 800 | 1 | 175 | 14 |
ONT → ATL this direction alone · flown January 2025 to July 2026
911 flights of 937 scheduled, 151,948 passengers in 172,228 seats, 33,582 pounds of freight. Delta Air Lines Inc. 911.
ATL → ONT this direction alone · flown January 2025 to July 2026
930 flights of 937 scheduled, 152,315 passengers in 176,470 seats, 41,917 pounds of freight, 626 pounds of mail. Delta Air Lines Inc. 925; Southwest Airlines Co. 3; Alaska Airlines Inc. 2.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Ontario International ONT and Hartsfield/Jackson Atlanta International ATL; all routes.