Southwest offers free messaging and in-flight entertainment on personal devices, ideal for short flights.
Southwest allows two free checked bags, including oversized items, enhancing travel convenience.
Round-trip from | $97 (American Airlines) |
---|---|
One-way from | $49 (American Airlines) |
Popular in | December |
Cheapest in | October |
Average price | $196 |
Good round-trip deal | $121 or less |
Good one-way deal | $118 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Tue 9/16
10:32 am-11:56 am
Nonstop1h 24m
Ontario
Wed 9/17
6:10 am-7:27 am
Nonstop1h 17m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Tue 9/16
6:45 am-1:10 pm
1 stop6h 25m
Ontario
Wed 9/17
7:10 pm-8:25 pm
Nonstop1h 15m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Tue 11/4
3:49 pm-4:01 pm
Nonstop1h 12m
Ontario
Thu 11/6
12:55 pm-3:18 pm
Nonstop1h 23m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Tue 1/6
8:50 pm-9:05 pm
Nonstop1h 15m
Ontario
Sat 1/10
5:50 am-8:05 am
Nonstop1h 15m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Tue 1/6
9:00 am-9:20 am
Nonstop1h 20m
Ontario
Thu 1/8
5:45 pm-8:00 pm
Nonstop1h 15m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Mon 9/22
10:32 am-11:56 am
Nonstop1h 24m
Ontario
Tue 9/23
1:10 pm-2:31 pm
Nonstop1h 21m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Tue 9/16
4:58 pm-6:16 pm
Nonstop1h 18m
Ontario
Thu 9/18
7:16 pm-8:35 pm
Nonstop1h 19m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Wed 1/7
5:35 pm-5:53 pm
Nonstop1h 18m
Ontario
Sat 1/10
5:03 pm-7:25 pm
Nonstop1h 22m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Wed 10/15
10:38 am-12:01 pm
Nonstop1h 23m
PhoenixOntario
PHX - ONT
PHXONT
Phoenix Sky Harbor Intl
Tue 12/16
9:00 am-9:15 am
Nonstop1h 15m
The best time to book flights from Phoenix Sky Harbor Intl Airport to Ontario is 74 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 12% versus a flight in the morning.
Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Ontario flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday evenings 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 Thursday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).
Denver (DEN) – chosen by Cheapflights users on 67% of 1-stop itineraries from Phoenix Sky Harbor Intl Airport to Ontario on Cheapflights.
Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $117.
Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 4h 07m.
Flights via Las Vegas (LAS) offer the fastest connection on this route, with an average layover time of 3h 08m.
Food
Boarding
Overall
Comfort
Crew
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
Food
Boarding
Overall
Comfort
Crew
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
Food
Boarding
Overall
Comfort
Crew
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
Food
Boarding
Overall
Comfort
Crew
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$56 | Average$159 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$108 | Average$267 | FlexibilityNo cancel fee | On-time63% | |
Cheapest$122 | Average$278 | FlexibilityNo cancel fee | On-time71% |