Cheapest return flights from Portland to London in March from 492€

AirHint found the following cheapest return flights from Portland (PDX) to London (LHR) in March 2026 (see full year).

Return flights

04 Mar - 13 Mar British Airways direct
04 Mar - 11 Mar United
24 Mar - 31 Mar United
04 Mar - 11 Mar British Airways direct
17 Mar - 01 Apr Air Canada
24 Mar - 07 Apr Air Canada
27 Mar - 10 Apr British Airways direct
14 Mar - 21 Mar United

Also check the deals for one-way flights from Portland to London in March.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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