Your next trip, last seen at €147
Lowest observedFrontier Airlines · 3 stops · One wayWhen 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.
One-way fare
- Lowest observed
- €147, departing 26 Jan 2027 (Last checked: 16 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Allegiant Air, American Airlines, Breeze Airways, Frontier Airlines, JetBlue, Volaris
- Typical journey time
- 25h 19m
About this route
Explore the fares we observed from Ontario to Key West. Prices move often, so pick your dates to see the latest options.
- Route distance
- 3,613 km
- Typical journey time
- 25h 19m
- Seen on fares with a connection
- Frontier Airlines, Breeze Airways
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
Airport to city: straight-line distance
- Ontario International Airport (ONT) → Ontario, city gazetteer reference point (34.0500, -117.6400): ≈ 4 km.
- Key West International Airport (EYW) → Key West, city gazetteer reference point (24.5557, -81.7826): ≈ 2 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.
Lowest one-way fare we saw per airline
Cheapest airline from Ontario to Key West: Frontier Airlines, from €147 (checked 16 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €147Jan 26, 2027 | 94 |
| Breeze Airways | €161Dec 12, 2026 | 15 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Ontario to Key West?
The lowest fare Routavio has observed is €147, found on 16 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Ontario to Key West?
In our observations January 2027 is the cheapest month so far, at €147.
Are there direct flights from Ontario to Key West?
Our data holds no non-stop flight from Ontario to Key West. The fares on this page include at least one stop.
Which airlines fly from Ontario to Key West?
Routavio has seen these carriers on the route: Allegiant Air, American Airlines, Breeze Airways, Frontier Airlines, JetBlue, Volaris.
How long does the flight from Ontario to Key West take?
Across the 116 fares Routavio observed, the average journey time is 30h 17m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Ontario to Key West fares were non-stop?
None of the 116 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which airline has the lowest fare from Ontario to Key West?
Cheapest airline from Ontario to Key West: Frontier Airlines, from €147 (checked 16 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 23 Oct 2026