Route Price Intelligence
Cheap Flights From Portland to London Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$755
Deals From
$706
Usually Costs
$706 – $839
Lowest We've Seen
$370
Based on 5,463 price pointshigh confidence
Monthly Price Guide
Jan
$706
Feb
$725
Mar
$1,310
Apr
$990
May
$749
Jun
$833
Jul
$752
Aug
$699
Sep
$714
Oct
$740
Nov
$754
Dec
$846
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 $699. The most expensive month tends to be March at around $1,310. For the best deals, consider flying in August, January, September.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $37070 price checksWorst: $630