Cheap flights from Jacksonville to Ontario

One-way fares from $103 · JAX → ONT · prices found by travellers in the last 48 hours

Compare all dates Ontario → Jacksonville
Cheapest fare
$103

Frontier Airlines · Fri, Dec 11

Cheapest month
December

from $103

Direct flights
Not recently

Usually 1+ stop

Quickest trip
7h 20m

3,390 km

Get a price alert

We'll email you when Jacksonville → Ontario drops to your price. It's free, and you can stop any time.

Today's cheapest fare is $103. We'll send one email to confirm. See our privacy policy.

Cheapest month to fly from Jacksonville to Ontario

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $297
  2. December 2026 Cheapest $103

Plan the rest of your trip to Ontario

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in OntarioCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in OntarioTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in OntarioPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in OntarioCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Jacksonville to Ontario

Jacksonville (JAX) and Ontario (ONT) are about 3,390 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 7h 20m. Over the next few months, one-way fares start from $103, and December 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Jacksonville to Ontario?

The cheapest one-way fare we've seen recently is $103 with Frontier Airlines, departing Friday, December 11, 2026. Over the coming months, the lowest fare in each month ranges from $103 to $297.

What is the cheapest month to fly from Jacksonville to Ontario?

December 2026 currently has the lowest fares, from $103 one way.

Are there direct flights from Jacksonville to Ontario?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Jacksonville to Ontario?

The quickest journey we've seen takes about 7h 20m. Jacksonville and Ontario are around 3,390 km apart.

Which airlines fly from Jacksonville to Ontario?

Recent fares on this route were with Frontier Airlines.

More cheap flights from Jacksonville

Compare flights to Ontario from other cities →