Portland (PDX) to Ontario (ONT) flights
2 airlines fly nonstop from Portland (PDX) to Ontario (ONT): Alaska Airlines and Frontier Airlines. The two airports are 839 miles (1,351 km) apart. Alaska Airlines is in oneworld. There are also 10 ways to fly it with one stop, through Sacramento, San Jose and Oakland and more.
Airlines flying nonstop from PDX to ONT
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
- Frontier AirlinesNot in an allianceWho books it
Book PDX to ONT with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks Alaska Airlines
- American AAdvantageBooks Alaska Airlines
- British Airways ClubBooks Alaska Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines
- Finnair PlusBooks Alaska Airlines
- Iberia ClubBooks Alaska Airlines
- JAL Mileage BankBooks Alaska Airlines
- Qantas Frequent FlyerBooks Alaska Airlines
- Qatar Airways Privilege ClubBooks Alaska Airlines
PDX to ONT with one stop
10 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Sacramento (SMF)Southwest Airlines the whole way
- Via San Jose (SJC)Southwest Airlines the whole way
- Via Oakland (OAK)Southwest Airlines the whole way
- Via Santa Rosa (STS)Alaska Airlines the whole way
- Via San Francisco (SFO)United Airlines and Frontier Airlines the whole way
- Via Las Vegas (LAS)Southwest Airlines and Frontier Airlines the whole way
- Via Boise (BOI)Alaska Airlines the whole way
- Via Seattle (SEA)Alaska Airlines and Delta Air Lines the whole way
- Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via Phoenix (PHX)American Airlines and Southwest Airlines the whole way
PDX to ONT: common questions
Which airlines fly nonstop from PDX to ONT?
Alaska Airlines (oneworld) and Frontier Airlines fly nonstop from Portland (PDX) to Ontario (ONT).
How far is Portland from Ontario by plane?
Portland (PDX) and Ontario (ONT) are 839 miles (1,351 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book PDX 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 PDX 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 PDX to ONT with taxes and fees.
Where can I connect between Portland and Ontario?
The most direct connections are through Sacramento (SMF), San Jose (SJC), Oakland (OAK), Santa Rosa (STS) and San Francisco (SFO). On 10 of them the same airline flies both flights, for example Southwest Airlines through Sacramento.
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.