
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $170 (Kiwi.com) |
One-way from | $51 (Trip.com) |
Popular in | December |
Cheapest in | October |
Average price | $456 |
Good round-trip deal | $399 or less |
Good one-way deal | $348 or less |
Fly from
Fly to
Route
Depart
Return
Price
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
jue. 1/15
9:19 pm-2:08 pm
1 stop19h 49m
Ontario
lun. 1/19
8:32 am-8:48 pm
1 stop9h 16m
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
jue. 12/25
7:00 am-11:59 pm
1 stop19h 59m
Ontario
mié. 12/31
6:00 am-5:30 am
1 stop20h 30m
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
jue. 12/25
7:00 am-11:59 pm
1 stop19h 59m
Ontario
jue. 1/1
6:45 am-7:47 pm
1 stop10h 02m
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
lun. 1/12
10:57 pm-12:16 pm
2 stops16h 19m
Ontario
mar. 1/20
1:10 pm-8:34 am
2 stops16h 24m
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
sáb. 1/3
8:13 am-10:00 am
Nonstop4h 47m
Ontario
jue. 1/8
7:30 am-11:48 pm
1 stop13h 18m
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
jue. 2/12
10:10 am-12:02 pm
Nonstop4h 52m
Ontario
mié. 2/18
7:30 am-11:48 pm
1 stop13h 18m
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
vie. 12/26
10:30 am-12:12 am
1 stop16h 42m
Ontario
jue. 1/1
6:45 am-7:47 pm
1 stop10h 02m
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
mié. 4/8
7:18 pm-9:04 pm
Nonstop4h 46m
Ontario
mar. 5/12
12:00 pm-7:20 pm
Nonstop4h 20m
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
mié. 1/14
9:41 am-11:31 am
Nonstop4h 50m
Ontario
mar. 1/20
10:30 pm-5:35 am
Nonstop4h 05m
AtlantaOntario
ATL - ONT
ATLONT
Atlanta Hartsfield-Jackson
mar. 1/6
9:41 am-11:31 am
Nonstop4h 50m
Ontario
sáb. 1/10
7:30 am-11:48 pm
1 stop13h 18m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
To ensure you get the cheapest price possible for a flight from Atlanta to Ontario, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, February is the cheapest month in which you can book a flight from Atlanta to Ontario (average of $78). Flying from Atlanta to Ontario in June is currently the most expensive (average of $138). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 24% on flights from Atlanta to Ontario by exploring options for tickets at noon.
Travelers seeking maximum savings on their Atlanta to Ontario flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
About 19% of weekly flights between Atlanta and Ontario have experienced delays in the past year, with the average delay time being 122 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Wednesday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Delta have had the lowest number of delays on this route, with just 19% of flights being delayed.
Las Vegas (LAS) – chosen by Cheapflights users on 62% of 1-stop itineraries from Atlanta to Ontario on Cheapflights.
Dallas (DFW) is the most affordable 1-stop option, with an average round-trip price of $153.
Flights via Austin (AUS) have the shortest average one-way travel time for 1-stop routes: 6h 20m.
Flights via Austin (AUS) offer the fastest connection on this route, with an average layover time of 1h 35m.
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Entertainment
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Walter,Aug 2025
OAK - SAN
Crew
Food
Boarding
Overall
Entertainment
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Walter,Aug 2025
OAK - SAN
Crew
Food
Boarding
Overall
Entertainment
Comfort
Reviews
Walter,Aug 2025
OAK - SAN
Crew
Food
Boarding
Overall
Entertainment
Comfort
Reviews
Walter,Aug 2025
OAK - SAN
Crew
Food
Boarding
Overall
Entertainment
Comfort
Reviews
Walter,Aug 2025
OAK - SAN
Crew
Food
Boarding
Overall
Entertainment
Comfort
Reviews
Walter,Aug 2025
OAK - SAN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$130 | Average$268 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$136 | Average$207 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$280 | Average$420 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$299 | Average$500 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$330 | Average$416 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$338 | Average$428 | FlexibilityNo cancel fee | On-time69% |