Direct flights from Ontario
30 nonstop destinations. Zero layovers, zero connections — just one hop out of ONT.
Usually: San Francisco (SFO), on Frontier
Honolulu (HNL), 2,600 miles · 5 h 30 m
Where one hop gets you
Dashed arcs = nonstop routes from ONT · updates with the day filterDrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Hotels near ONT with a free airport shuttle 18% of flights from ONT leave before 7am
American
Southwest
United
DeltaInternational nonstops from ONT by region
Flight numbers from Ontario (ONT)
Each one's timetable, usual aircraft and how it ran in our sample — 12 of the 29 we cover from ONT, flown most days first.
What changed since August 2026
Comparing August 2026 with October 2026 · ONT
- Nonstop service to Baltimore ended — it was flying 4 flights a week.
- Frontier stopped flying to Houston (IAH).
- Houston (IAH) dropped from 13 flights a week to 8 flights.
- San Francisco grew from 28 flights a week to 38 flights.
Parking rates & lots at Ontario International Airport official airport site · www.flyontario.com
Where can you fly nonstop from Ontario (ONT)?
Ontario International Airport (ONT) offers nonstop flights to 30 destinations across the United States, El Salvador and Mexico. The busiest direct routes from ONT are served by Southwest, Frontier, American and Alaska, with the most frequent nonstop service to Phoenix, Denver and Las Vegas.
Headed abroad without a connection? ONT has direct international flights to Guadalajara, León, Guanajuato and Morelia. Use the day filter above to see exactly which routes fly on the day you want to travel. Route data updated November 2026 from observed departures.
Usually the cheapest nonstop from Ontario is to San Francisco (SFO) on Frontier, then Las Vegas (LAS) on Frontier, then Denver (DEN) on Frontier.
Longest nonstop from Ontario: Honolulu (HNL), about 2,600 miles and 5 h 30 m.
Airlines and flight times at ONT
9 airlines fly nonstop out of ONT. Southwest runs the biggest operation — about 224 of the 582 weekly departures (38%), across 13 routes — followed by American and Alaska.
The airlines flying nonstop out of Ontario are Southwest, American, Alaska, Delta, United, Frontier, Volaris, JetBlue and Avianca El Salvador.
On 22 of Ontario's 30 nonstop routes, a single airline has the service to itself — Southwest is the only airline with a nonstop to Sacramento, and Delta the only one to Salt Lake City.
The shortest nonstop out of ONT is Burbank at about 21m in the air; the longest is Honolulu at about 5h30m.
Route data updated November 2026 from observed flight departures. Schedules change — always confirm with the airline before booking.