Route Price Intelligence
Cheap Flights From Seattle to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$256
Great Deal
Under $220
Typical Range
$220 – $317
Lowest We've Seen
$88
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$317
Feb
—
Mar
—
Apr
$222
May
$201
Jun
$207
Jul
$239
Aug
$229
Sep
$265
Oct
$317
Nov
$317
Dec
$317
Cheapest Average Expensive
Best Time to Fly from Seattle to Ontario
The cheapest time to fly from Seattle to Ontario is typically May, when fares average around $201. The most expensive month tends to be January at around $317. For the best deals, consider flying in May, June, April.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Cheapest month: July22,030 fares analyzedTypical low: $248