Ontario California (ONT) direct flights: all 56 nonstop routes, measured
live · updated 5h ago
OPS Watch · 16,163 legs measured · last 90 days · 8 routes outbound only · 8 routes inbound only
56nonstop destinations from Ontario International Airport, flown by 18 airlines. 40 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 44 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 +15 min.
Busiest routeSeattle SEA · about 106 movements a week, Alaska Airlines, Delta Air Lines, Frontier Airlines1,361 legs observed
Most reliableKailua-Kona KOA · 99% on time, 0% cancelled82 legs
Roughest rideBishop BIH · 10% on time, 0% cancelled20 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
SEASeattle⇆Alaska Airlines · Delta Air Lines · Frontier Airlines · Air Transport International106/wk74%on time0.1%cancelled
■ ≥85% on time■ 70–84%■ 55–69%■ <55%cancelled: amber ≥2%, red ≥5%⇆ flies both directions
Nonstop flights into Ontario California
40 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; 8 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 18 airlines, based on flights observed on the airport's own boards over the last 14 days. 40 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: 99% 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 12 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.
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