Louisville to Ontario flights

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Fare seen

€311Seen on 20 Sep 2026

Last checked

12 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €128

Lowest observed

2 Nov 2026

Frontier Airlines · 1 stop · One way

Cheapest observed day · Last checked: 20 Sep 2026

Departure

08:47

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Prices are for observed departure and return date pairs. No data does not mean no flights.

Airlines seen: Aeromexico, Alaska Airlines, Allegiant Air, Breeze Airways, Frontier Airlines, Southwest Airlines +1 more
Typical journey time: 14h 50m

Short answer

We have seen Aeromexico fares from Louisville to Ontario. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare. Fare seen: €311 on 20 Sep 2026.

About this route

Explore the fares we observed from Louisville to Ontario. Prices move often, so pick your dates to see the latest options.

Route distance: 2,886 km
Typical journey time: 14h 50m
Airlines seen: Aeromexico, Alaska Airlines, Allegiant Air, Breeze Airways, Frontier Airlines, Southwest Airlines +1 more
Seen on fares with a connection: Breeze Airways, United Airlines, Frontier Airlines, Allegiant Air, Alaska Airlines

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

A clearer picture of your fare

Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

Airport to city: straight-line distance

Louisville Muhammad Ali International Airport (SDF) → Louisville, city gazetteer reference point (38.2527, -85.7585): ≈ 9 km.
Ontario International Airport (ONT) → Ontario, city gazetteer reference point (34.0500, -117.6400): ≈ 4 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Frequently asked

How much was a flight from Louisville to Ontario?

A fare of €311 was seen on 20 Sep 2026. Fares change, so search your dates for the current price.

Are there direct flights from Louisville to Ontario?

Our data holds no non-stop flight from Louisville to Ontario. The fares on this page include at least one stop.

Which airlines fly from Louisville to Ontario?

These are the carriers we have seen on the route: Aeromexico, Alaska Airlines, Allegiant Air, Breeze Airways, Frontier Airlines, Southwest Airlines +1 more.

How long does the flight from Louisville to Ontario take?

The average journey time across the 81 fares we observed is 18h 01m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed Louisville to Ontario fares were non-stop?

None of the 81 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide