Key West to Ontario flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Key West to Ontario is €112 with Breeze Airways (checked on 28 Oct 2026).
Your next trip, last seen at €112
Lowest observedBreeze Airways · 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
- €112, departing 1 Dec 2026 (Last checked: 28 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 54Check live prices for this route
- Airlines seen
- Allegiant Air, Breeze Airways, Frontier Airlines
- Typical journey time
- 33h 56m
About this route
Explore the fares we observed from Key West to Ontario. Prices move often, so pick your dates to see the latest options.
- Route distance
- 3,613 km
- Typical journey time
- 33h 56m
- Seen on fares with a connection
- Breeze Airways, Frontier 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
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- Key West International Airport (EYW) → Key West, city gazetteer reference point (24.5557, -81.7826): ≈ 2 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.
Lowest fare by departure month
Cheapest month from Key West to Ontario: December 2026, from €112 (checked 28 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €122 | 11 |
| December 2026 | €112 | 23 |
| January 2027 | €116 | 20 |
Lowest fare by day of the week
Cheapest day of the week from Key West to Ontario: Tuesday, from €112 (checked 28 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €117 | 8 |
| Tuesday | €112 | 10 |
| Wednesday | €123 | 10 |
| Thursday | €125 | 10 |
| Friday | €122 | 7 |
| Saturday | €124 | 5 |
| Sunday | €153 | 4 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Key West to Ontario by days until departure (8 to 30 days): €112 (checked 28 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 8 to 30 days | €112 | 13 |
| 31 to 60 days | €112 | 21 |
| 61 days or more | €116 | 20 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Frequently asked
How much is a flight from Key West to Ontario?
The lowest fare Routavio has observed is €112, found on 28 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Key West to Ontario?
Cheapest month from Key West to Ontario: December 2026, from €112 (checked 28 Oct 2026).
Are there direct flights from Key West to Ontario?
Our data holds no non-stop flight from Key West to Ontario. The fares on this page include at least one stop.
Which airlines fly from Key West to Ontario?
Routavio has seen these carriers on the route: Allegiant Air, Breeze Airways, Frontier Airlines.
How long does the flight from Key West to Ontario take?
Across the 54 fares Routavio observed, the average journey time is 34h 30m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Key West to Ontario fares were non-stop?
None of the 54 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which day of the week is cheapest from Key West to Ontario?
Cheapest day of the week from Key West to Ontario: Tuesday, from €112 (checked 28 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.