Ontario (ONT) — 55 Flight Routes & Destinations
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Hub Brief
Plan your next trip from Ontario
Ontario International Airport (ONT) connects to 55 destinations (50 domestic, 5 international) across 3 continents, served by airline including Southwest, Frontier and Alaska. With 999 weekly departures, you have plenty of options for schedule flexibility.
How does ONT compare?
Alternative airports within 150 miles of Ontario International Airport.
| Metric | ONT | SNA | LGB | BUR | LAX | PSP | SAN |
|---|---|---|---|---|---|---|---|
| Distance | — | 30 mi | 36 mi | 44 mi | 47 mi | 65 mi | 94 mi |
| Nonstop Routes | 55 | 147 | 38 | 74 | 273 | 91 | 120 |
| International | 5 | 14 | 2 | 7 | 112 | 14 | 18 |
| Airlines | 18 | — | — | — | — | — | — |
| Passengers/yr | 7.0M | 10.7M | 4.1M | 6.8M | 76.6M | 3.2M | 25.6M |
On-Time Performance
Seasonal & New Routes
Recently launched and seasonal services from ONT.
Routes by Distance
Distance breakdown of all routes from ONT.
Schedule Overview
Weekly flight schedule summary from ONT.
Ontario International Airport: Quick Facts
Comprehensive reference for ONT airport information.
Frequently Asked Questions
Common questions about flights from Ontario International Airport.
Ontario International Airport offers nonstop flights to 55 destinations, including 50 domestic and 5 international routes.
26 airlines operate scheduled service from Ontario International Airport, including major carriers like Southwest, Frontier and Alaska. Use the airline filter above to see routes by specific carrier.
Yes, Ontario International Airport offers 5 international routes across 3 continents.
Yes. Beyond nonstop routes, the route explorer shows 1-stop and 2-stop connections, letting you reach hundreds of additional destinations via major hubs.
Nearby alternatives include SNA, LGB and BUR. Check the Nearby Airports section above for route counts and distances.
Use the checkboxes in the route list to select routes, then click Compare to see side-by-side stats including frequency, duration, airlines, and on-time performance.
Check the Schedule Overview section for a day-by-day breakdown of route availability from Ontario International Airport.
Ontario International Airport handles approximately 6,989,108 passengers annually.
Route data is updated regularly from official airline schedules. Seasonal or newly announced routes may take a few days to appear.
Click any route to see detailed flight options, then use the 'Search Flights' button to check availability and prices on Google Flights.