Frontier Airlines flights to Ontario

The best Frontier Airlines flight deals to Ontario

Looking for a last minute deal or the best direct flight? Find the biggest savings on one-way and return trips to Ontario with Frontier Airlines.

Flying to Ontario with Frontier Airlines

The things to know before you go.
Cheapest month to flyApril

Flying to Ontario with Frontier Airlines: FAQs

Frontier Airlines currently also flies to Orlando International, Atlanta Hartsfield-Jackson and Denver International.