Seats Frog guide
Routes from Ontario (ONT)
15 nonstop destinations from Ontario (ONT) on 4 airlines: 15 in United States and 0 abroad. The most routes: Southwest Airlines (12), Alaska Airlines (1) and Delta Air Lines (1). Longest: Honolulu (HNL), about 2,600 miles. Routes checked October 23, 2026.
- Nonstop destinations
- 15
- Airlines
- 4
- Countries
- 1
- Longest route
- HNL 2,600 mi
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- Atlanta ATLDelta Air Lines
- Austin AUSSouthwest Airlines
- Chicago MDWSouthwest Airlines
- Dallas DALSouthwest Airlines
- Denver DENSouthwest Airlines
- Honolulu HNLSouthwest Airlines
- Houston HOUSouthwest Airlines
- Las Vegas LASSouthwest Airlines
- Nashville BNASouthwest Airlines
- New York JFKJetBlue Airways
- Oakland OAKSouthwest Airlines
- Phoenix PHXSouthwest Airlines
- Sacramento SMFSouthwest Airlines
- San Jose SJCSouthwest Airlines
- Santa Rosa STSAlaska Airlines
From each airline's own route maps and announcements: Alaska Airlines ↗ (checked Oct 23, 2026), Delta Air Lines ↗ (checked Oct 23, 2026), JetBlue Airways ↗ (checked Oct 23, 2026), Southwest Airlines ↗ (checked Oct 23, 2026).
Airlines flying nonstop from ONT
- Southwest Airlines · 12 destinationsSouthwest Airlines route mapSeat maps
- Alaska Airlines · 1 destinationAlaska Airlines route mapSeat maps
- Delta Air Lines · 1 destinationDelta Air Lines route mapSeat maps
- JetBlue Airways · 1 destinationJetBlue Airways route map
Nonstop from ONT, by country
Quick answers
How many nonstop destinations are there from ONT?
15 nonstop destinations in 1 country, counting the routes Southwest Airlines, Alaska Airlines, Delta Air Lines and JetBlue Airways publish on their own route maps (checked October 23, 2026). Airlines whose route maps we haven't loaded aren't counted yet.
Which airlines fly nonstop from ONT?
Southwest Airlines (12 routes), Alaska Airlines (1 route), Delta Air Lines (1 route) and JetBlue Airways (1 route).
What is the longest nonstop flight from ONT?
Southwest Airlines to Honolulu (HNL), about 2,600 miles great-circle.
What new routes are starting from ONT?
None announced by the airlines we track right now.
Are there airport lounges at ONT?
Yes: 2 open lounges at Ontario (ONT), compared on Lounge Frog's ONT lounge guide.