Which airline flies the most flights to ONT? The top airline carrier flying out of Ontario Intl. is Southwest Airlines and they fly over 1,457 flights every month. What are the cheapest flights from ONT? Ontario has a lot of discount flights in the month of November. Check out these great deals on flights from ONT:
- American Airlines - Los Angeles (ONT) to Charlotte (CLT) leaving on 11/18 at 9:35 pm and returning on 11/19 at 11:45 am for only $492 per person.*
- United - Los Angeles (ONT) to Boston (BOS) on 11/21 leaving at 6:00 am and returning on 11/24 at 12:01 am for only $528 per person.*
- Air Canada - Los Angeles (ONT) to Frankfurt (FRA) on 11/21 leaving at 8:00 am and returning on 11/24 at 12:01 am for only $3,013 per person.*
*Prices vary and will be updated when you view current flight availability results. Deals displayed here are based on flight pricing and availability as of 11/16/2017 and may change as you get closer to the actual flight date. Deals displayed whose dates are in the past are no longer valid.