Ontario to Atlanta (ONT-ATL): nonstop upgrade & award space

Delta Air Lines flies nonstop between Ontario (ONT) and Atlanta (ATL), roughly 25 times a week. With Delta Air Lines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. 2LNR tracks confirmed upgrade and award space on Delta Air Lines, on every ONT to ATL departure, so you know which flights have space before you book.

Schedule last confirmed September 6, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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Nonstop flights a week

1,895 mi

Nonstop distance

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Ontario to Atlanta flight schedule

Scheduled nonstop departures for ONT to ATL, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Scheduled nonstop departures from Ontario (ONT) to Atlanta (ATL)
Date	Flight	Airline	Departs ONT	Arrives ATL	Duration	Aircraft
Wed, Sep 9	DL 409	Delta Air Lines	07:05	14:15	4h 10m	321
Wed, Sep 9	DL 761	Delta Air Lines	07:05	14:29	4h 24m	321
Wed, Sep 9	DL 665	Delta Air Lines	12:17	19:30	4h 13m	321
Thu, Sep 10	DL 409	Delta Air Lines	07:05	14:15	4h 10m	321
Thu, Sep 10	DL 761	Delta Air Lines	07:05	14:29	4h 24m	321
Thu, Sep 10	DL 665	Delta Air Lines	12:17	19:30	4h 13m	321
Fri, Sep 11	DL 409	Delta Air Lines	07:05	14:15	4h 10m	321
Fri, Sep 11	DL 761	Delta Air Lines	07:05	14:29	4h 24m	321
Fri, Sep 11	DL 665	Delta Air Lines	12:17	19:30	4h 13m	321
Sat, Sep 12	DL 409	Delta Air Lines	07:05	14:15	4h 10m	321
Sat, Sep 12	DL 761	Delta Air Lines	07:05	14:29	4h 24m	321
Sat, Sep 12	DL 665	Delta Air Lines	12:17	19:30	4h 13m	321
Sun, Sep 13	DL 409	Delta Air Lines	07:05	14:15	4h 10m	321
Sun, Sep 13	DL 761	Delta Air Lines	07:05	14:29	4h 24m	321
Sun, Sep 13	DL 665	Delta Air Lines	12:17	19:30	4h 13m	321
Sun, Sep 13	DL 2891	Delta Air Lines	22:00	05:05	4h 5m	321
Mon, Sep 14	DL 409	Delta Air Lines	07:05	14:15	4h 10m	321
Mon, Sep 14	DL 761	Delta Air Lines	07:05	14:29	4h 24m	321
Mon, Sep 14	DL 665	Delta Air Lines	12:17	19:30	4h 13m	321
Mon, Sep 14	DL 2891	Delta Air Lines	22:00	05:05	4h 5m	321
Tue, Sep 15	DL 409	Delta Air Lines	07:05	14:15	4h 10m	321
Tue, Sep 15	DL 761	Delta Air Lines	07:05	14:29	4h 24m	321
Tue, Sep 15	DL 665	Delta Air Lines	12:17	19:30	4h 13m	321

Showing all 23 scheduled ONT to ATL departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every ONT to ATL date on the interactive map

Confirmed upgrade & award space on ONT to ATL departures

2LNR tracks confirmed upgrade and award space on Delta Air Lines, segment by segment and date by date. Open the calendar for Ontario to Atlanta to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each ONT to ATL departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See ONT to ATL on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Ontario to Atlanta nonstop

Carriers operating ONT to ATL nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

Delta Air Lines (DL) route map

See ONT to ATL on the interactive map →

Frequently asked questions about ONT to ATL

How far is Atlanta from Ontario?

ONT to ATL covers about 1,895 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.

Which airlines fly nonstop from ONT to ATL?

Delta Air Lines is currently the only airline flying ONT to ATL nonstop. 2LNR tracks confirmed upgrade and award space on Delta Air Lines.

How many flights a week are there from ONT to ATL?

About 25 nonstop flights a week run between Ontario and Atlanta in the current schedule, operated by Delta Air Lines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.

What time do flights from ONT to ATL depart?

Scheduled ONT to ATL nonstops in the next 7 days with service leave between 07:05 and 22:00, local time at Ontario. The schedule table on this page lists every departure by date, with its arrival time and aircraft.

How do I check upgrade or award availability on ONT to ATL?

Open the ONT to ATL route on the interactive map or the matrix to see confirmed upgrade and award space by date on Delta Air Lines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss ONT to ATL upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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