Washington to Ontario 🇺🇸
Cheapest fare
$222
Fastest
6h 23m
Direct from
No direct
Dates tracked
8
Cheapest fare
$222
Thu, Nov 19 · 1 stop · 6h 59m · Frontier Airlines
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$222 is cheaper than 86% of departure dates on this route.
This is a low price for this route.
$222$442
Price calendar
Cheapest round-trip fare by departure day Cheap Average Pricey
October 2026
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Price trend
Price alert
Cheapest day to fly
Thursday
Averages $285, vs $442 on Fridays.
Work-hours calculator
This flight to Ontario costs you 14h 48m of work.
Same money as
3
SUV fuel tanks
12
large pizzas
17
cinema tickets
37
fancy coffees
Airlines on this route
Frontier Airlines
from $222 · 8 dates
Destination guide
Discover Ontario
About Ontario
Ontario is a city in southwestern San Bernardino County, California, United States, 35 miles (56 km) east of downtown Los Angeles and 23 miles (37 km) west of downtown San Bernardino, the county seat. Located in the western part of the Inland Empire metropolitan area, it lies just east of Los Angeles County and is part of the Los Angeles metropolitan area. As of the 2020 census, the city had a population of 175,265.
Text from Wikipedia — Ontario, California, licensed CC BY-SA 4.0.
All dates
Every fare, by date
| Departs | Return | Airline | Stops | Price |
|---|---|---|---|---|
| Tue, Oct 27 | Tue, Nov 3 | Frontier Airlines | 1 stop | $334 |
| Sat, Oct 31 | Mon, Nov 2 | Frontier Airlines | 1 stop | $442 |
| Sat, Oct 31 | Sat, Nov 21 | Frontier Airlines | 1 stop | $297 |
| Tue, Nov 3 | Wed, Nov 4 | Frontier Airlines | 1 stop | $311 |
| Tue, Nov 3 | Tue, Nov 10 | Frontier Airlines |
Also cheap
More from Washington
FAQ
Washington to Ontario: answers
How much is a flight from Washington to Ontario?+
The cheapest fare we see right now is $222 round trip on Thu, Nov 19 with Frontier Airlines.
Are there direct flights from Washington to Ontario?+
We haven't seen a direct fare recently; the best options have 1+ stop.
How long is the flight from Washington to Ontario?+
The fastest itinerary we track takes about 6h 23m door to door.
What is the cheapest day to fly to Ontario?+
Thursday departures are the cheapest on average right now, Friday the most expensive.
