Your next trip, last seen at €51
Lowest observedFrontier Airlines · 1 stop · 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
- €51, departing 21 Nov 2026 (Last checked: 24 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 34Check live prices for this route
- Airlines seen
- Southwest Airlines, American Airlines, Frontier Airlines, United Airlines
- Reported fastest flight
- 1h 15m
- Non-stop
- Yes
About this route
Explore the fares we observed from Phoenix to Ontario. Prices move often, so pick your dates to see the latest options.
- Route distance
- 519 km
- Reported fastest flight
- 1h 15m
- Alternative airports
- AZA, SCF
Route-level information; individual journeys vary.
Published schedules report non-stop service with Southwest Airlines. Check current timetables.
A clearer picture of your fare
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days | Fastest non-stop |
|---|---|---|
| Southwest Airlines | 8 / 36 | |
| American Airlines | 6 / 36 |
Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.
Airport to city: straight-line distance
- Phoenix Sky Harbor International Airport (PHX) → Phoenix, city gazetteer reference point (33.4484, -112.0740): ≈ 6 km.
- Mesa Gateway Airport (AZA) → Phoenix, city gazetteer reference point (33.4484, -112.0740): ≈ 42 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 Phoenix to Ontario: November 2026, from €51 (checked 24 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €51 | 17 |
| December 2026 | €51 | 15 |
Lowest fare by day of the week
Cheapest day of the week from Phoenix to Ontario: Tuesday, from €51 (checked 24 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €53 | 5 |
| Tuesday | €51 | 5 |
| Wednesday | €51 | 4 |
| Thursday | €53 | 4 |
| Friday | €53 | 5 |
| Saturday | €51 | 5 |
| Sunday | €60 | 6 |
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 Phoenix to Ontario by days until departure (8 to 30 days): €51 (checked 24 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 8 to 30 days | €51 | 15 |
| 31 to 60 days | €51 | 17 |
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.
Lowest one-way fare we saw per airline
Cheapest airline from Phoenix to Ontario: Frontier Airlines, from €51 (checked 24 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €51Nov 21, 2026 | 8 |
| American Airlines | €53Nov 21, 2026 | 6 |
| Southwest Airlines | €53Nov 21, 2026 | 9 |
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 Phoenix to Ontario?
The lowest fare Routavio has observed is €51, found on 24 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Phoenix to Ontario?
Cheapest month from Phoenix to Ontario: November 2026, from €51 (checked 24 Oct 2026).
Are there direct flights from Phoenix to Ontario?
Yes. Published schedules report non-stop flights on this route with Southwest Airlines.
Which airlines fly from Phoenix to Ontario?
Routavio has seen these carriers on the route: Southwest Airlines, American Airlines, Frontier Airlines, United Airlines.
How many of the observed Phoenix to Ontario fares were non-stop?
1 of the 6 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
Which airlines had non-stop offers on at least 3 departure dates from Phoenix to Ontario?
For Phoenix to Ontario, examples of observed one-way non-stop offers checked within the last 14 days: Southwest Airlines (8), American Airlines (6). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which day of the week is cheapest from Phoenix to Ontario?
Cheapest day of the week from Phoenix to Ontario: Tuesday, from €51 (checked 24 Oct 2026).
Which airline has the lowest fare from Phoenix to Ontario?
Cheapest airline from Phoenix to Ontario: Frontier Airlines, from €51 (checked 24 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
Keep exploring
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Recently observed fares. Prices may change.
Last checked: 24 Oct 2026