Is there a nonstop flight from Atlanta (ATL) to Ontario (ONT)?

Yes. Delta operates a nonstop ATL–ONT service year-round.

How often do flights leave ATL for ONT?

About daily — 17.6 departures a week in August 2026, compared with 14 a week in February 2026.

How much does a nonstop ATL to ONT flight cost?

Half of tickets sold on this route were between $300 and $550 one way, with a median of $375. Based on 859 ticket records in the US DOT fare survey for Q2 2025.

Nonstop route

Atlanta to Ontario nonstop

Yes: Delta flies direct from Atlanta (ATL) to Ontario (ONT) about 3 times a day, year-round.

ATLAtlanta

✈

ONTOntario

Delta

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daily17.6 flights a week

Year-roundflown 12 of the last 12 months

$300–$550typical one-way · median $375 · US DOT Q2 2025

1,900miles · about 4 hr 30 min

Route detail

Atlanta to Ontario in numbers

Measured from US DOT filings, not estimated from distance.

Distance and flight time: 1,900 miles nonstop, about 4 hr 30 min gate to gate. Flight time is an estimate from the great-circle distance; the filings carry distance, not scheduled elapsed time.
Seasonality: Flew every month of the last year: busiest in May 2026 (21 flights a week), quietest in January 2026 (14 flights a week).
Sep 2025: 18 flights a week
Oct 2025: 19 flights a week
Nov 2025: 19 flights a week
Dec 2025: 19 flights a week
Jan 2026: 14 flights a week
Feb 2026: 14 flights a week
Mar 2026: 14 flights a week
Apr 2026: 18 flights a week
May 2026: 21 flights a week
Jun 2026: 18 flights a week
Jul 2026: 20 flights a week
Aug 2026: 18 flights a week
Flights a week by month, Sep 2025 to Aug 2026, from US DOT on-time filings.
Who operates the flights: Delta is the only carrier filing this pair.
Fares: Half of the 859 tickets in the US DOT fare survey for Q2 2025 sold between $300 and $550 one way, median $375. The survey runs a couple of quarters behind, so read it as the shape of the route's pricing rather than today's quote.
Jul to Sep (Q3 2024): median $300 one way, middle half $200 to $450, 1,097 tickets
Oct to Dec (Q4 2024): median $325 one way, middle half $250 to $475, 1,316 tickets
Jan to Mar (Q1 2025): median $400 one way, middle half $325 to $575, 686 tickets
Apr to Jun (Q2 2025): median $375 one way, middle half $300 to $550, 859 tickets
Jul to Sep trips were the cheapest (median $300 one way) and Jan to Mar trips cost the most (median $400), in the DOT ticket survey for Q3 2024 to Q2 2025. Bars show the middle half of one-way fares; the mark is the median.

Flying the other way? Ontario to Atlanta nonstop.

Also nonstop from Atlanta (ATL)

Busiest other routes out of the same airport

Orlando (MCO) about 22 times a day
New York (LGA) about 21 times a day
Chicago (ORD) about 20 times a day
Fort Lauderdale (FLL) about 19 times a day
Washington (DCA) about 18 times a day
Philadelphia (PHL) about 17 times a day
Dallas/Fort Worth (DFW) about 17 times a day
Tampa (TPA) about 17 times a day

All 186 nonstop destinations from ATL

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Staying in Ontario?

Sort out where you'll sleep and what you'll do once you land.

Hotels in OntarioCompare rates on Hotels.com ↗More places to staySearch Booking.com ↗Things to do in OntarioTours and tickets on GetYourGuide ↗

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