Route Price Intelligence
Cheap Flights From Seattle to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$254
Deals From
$188
Usually Costs
$188 – $257
Lowest We've Seen
$97
Based on 8,069 price pointshigh confidence
Monthly Price Guide
Jan
$268
Feb
$197
Mar
$167
Apr
$167
May
$207
Jun
$275
Jul
$257
Aug
$257
Sep
$257
Oct
$257
Nov
$257
Dec
$257
Cheapest Average Expensive
Best Time to Fly from Seattle to Ontario
The cheapest time to fly from Seattle to Ontario is typically March, when fares average around $167. The most expensive month tends to be June at around $275. For the best deals, consider flying in March, April, February.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $9759 price checksWorst: $200