Route Price Intelligence
Cheap Flights From Portland to London Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$642
Deals From
$607
Usually Costs
$607 – $704
Lowest We've Seen
$370
Based on 7,224 price pointshigh confidence
Monthly Price Guide
Jan
$923
Feb
$742
Mar
$682
Apr
$750
May
$644
Jun
$741
Jul
$748
Aug
$642
Sep
$693
Oct
$790
Nov
$783
Dec
$859
Cheapest Average Expensive
Best Time to Fly from Portland to London Ontario
The cheapest time to fly from Portland to London Ontario is typically August, when fares average around $642. The most expensive month tends to be January at around $923. For the best deals, consider flying in August, May, March.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $37054 price checksWorst: $632