Ontario California (ONT) direct flights: all 56 nonstop routes, measured
live · updated 2h ago
OPS Watch · 15,288 legs measured · last 90 days · 8 routes outbound only · 6 routes inbound only
56nonstop destinations from Ontario International Airport, flown by 17 airlines. 42 of them also fly back in.
Measured from flights observed on Ontario California’s own departure and arrival boards over the last 14 days. Every route below carries its observed weekly frequency, and 43 routes with enough history show how reliably they actually run: on-time share and cancellation rate from the last 90 days. Right now departures are +26 min.
Busiest routeDenver DEN · about 103 movements a week, Frontier Airlines, Southwest Airlines, United Airlines1,320 legs observed
Most reliableKailua-Kona KOA · 100% on time, 0% cancelled79 legs
Roughest rideKahului OGG · 25% on time, 0% cancelled83 legs
All ONT nonstop destinations, ranked by weekly flights
One row per destination, both directions merged. On time means within 15 minutes of schedule; cancelled is the share of observed legs that never went. Routes with fewer than 20 observed legs show their leg count instead of a shaky number.
DestinationAirlinesWeeklyOn timeCancelled
DENDenver⇆Frontier Airlines · Southwest Airlines · United Airlines103/wk66%on time0.3%cancelled
■ ≥85% on time■ 70–84%■ 55–69%■ <55%cancelled: amber ≥2%, red ≥5%⇆ flies both directions
Nonstop flights into Ontario California
42 of the 56 destinations above also fly nonstop into Ontario California, so the table covers both directions of each route. Inbound arrival times and live status are on the arrivals board, and each route row links to its own route page with the paired schedule history.
8 routes appeared outbound only in the observed window; 6 routes appear inbound only. These are usually seasonal charter rotations or positioning patterns that the boards record separately.
ONT route map: where 56 nonstop routes go
ONT direct flights: questions travelers ask
How many direct flights does Ontario California have?
Ontario International Airport currently has nonstop service to 56 destinations on 17 airlines, based on flights observed on the airport's own boards over the last 14 days. 42 of those routes operate in both directions.
Which direct route from Ontario California is most reliable?
Among routes with at least 20 observed legs in the last 90 days, Kailua-Kona (KOA) runs cleanest: 100% of flights within 15 minutes of schedule with a 0% cancellation rate.
Which airline flies the most nonstop routes from Ontario California?
Southwest Airlines appears on 16 of the 56 nonstop routes we observed at ONT. The airline column in the route ledger lists every carrier observed on each route.
Where does this data come from?
From Ontario International Airport's own departure and arrival boards, recorded continuously by Pro Flight Search. Reliability figures cover the last 90 days; the route list covers the last 14 days of observed service.
.