Phoenix (PHX) to Ontario (ONT) flights
2 airlines fly nonstop from Phoenix (PHX) to Ontario (ONT): American Airlines and Southwest Airlines. The two airports are 324 miles (522 km) apart. American Airlines is in oneworld. There are also 7 ways to fly it with one stop, through Las Vegas, San Jose and Oakland and more.
Airlines flying nonstop from PHX to ONT
- American Airlinesoneworld · bookable with 9 programsWho books it
- Southwest AirlinesNot in an allianceWho books it
Book PHX to ONT with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks American Airlines
- American AAdvantageBooks American Airlines
- British Airways ClubBooks American Airlines
- Cathay Pacific Asia MilesBooks American Airlines
- Finnair PlusBooks American Airlines
- Iberia ClubBooks American Airlines
- JAL Mileage BankBooks American Airlines
- Qantas Frequent FlyerBooks American Airlines
- Qatar Airways Privilege ClubBooks American Airlines
PHX to ONT with one stop
7 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Las Vegas (LAS)Southwest Airlines and Frontier Airlines the whole way
- Via San Jose (SJC)Southwest Airlines the whole way
- Via Oakland (OAK)Southwest Airlines the whole way
- Via San Francisco (SFO)United Airlines and Frontier Airlines the whole way
+1 - Via Sacramento (SMF)Southwest Airlines the whole way
- Via Salt Lake City (SLC)Delta Air Lines the whole way
+1 - Via Santa Rosa (STS)Alaska Airlines the whole way
PHX to ONT: common questions
Which airlines fly nonstop from PHX to ONT?
American Airlines (oneworld) and Southwest Airlines fly nonstop from Phoenix (PHX) to Ontario (ONT).
How far is Phoenix from Ontario by plane?
Phoenix (PHX) and Ontario (ONT) are 324 miles (522 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book PHX to ONT award flights?
9 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, Finnair Plus, Iberia Club, JAL Mileage Bank, Qantas Frequent Flyer and 1 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does PHX to ONT cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for PHX to ONT with taxes and fees.
Where can I connect between Phoenix and Ontario?
The most direct connections are through Las Vegas (LAS), San Jose (SJC), Oakland (OAK), San Francisco (SFO) and Sacramento (SMF). On 7 of them the same airline flies both flights, for example Southwest Airlines through Las Vegas.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.