Frontier offers extra comfort seats with 32” separation for a fee, enhancing short-haul comfort.
For early morning flights, Frontier has fewer delays, ensuring timely arrivals.
Round-trip from | $91 (American Airlines) |
---|---|
One-way from | $46 (Southwest) |
Popular in | December |
Cheapest in | July |
Average price | $116 |
Good round-trip deal | $229 or less |
Good one-way deal | $129 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Sat 8/16
10:10 am-11:32 am
Nonstop1h 22m
Ontario
Sat 8/16
4:54 pm-6:23 pm
Nonstop1h 29m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Mon 8/4
6:50 pm-8:00 pm
Nonstop1h 10m
Ontario
Mon 8/11
12:55 pm-2:15 pm
Nonstop1h 20m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Mon 8/4
6:00 am-11:53 am
1 stop5h 53m
Ontario
Mon 8/11
6:00 am-11:52 am
1 stop5h 52m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Thu 9/4
8:00 am-9:10 am
Nonstop1h 10m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Mon 10/6
7:41 am-8:56 am
Nonstop1h 15m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Mon 7/14
6:00 am-11:53 am
1 stop5h 53m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Mon 9/8
7:59 pm-10:44 am
2 stops14h 45m
The best time to book flights from Phoenix Sky Harbor Intl Airport to Ontario is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Ontario (average of $246). Flying from Phoenix Sky Harbor Intl Airport to Ontario in March is currently the most expensive (average of $328). 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.
When flying from Phoenix Sky Harbor Intl Airport to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 29% versus a flight in the morning.
Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Ontario flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from PHX to ONT are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$43 | Average$123 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$123 | Average$275 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$130 | Average$267 | FlexibilityNo cancel fee | On-time63% |