AirHint found the following cheapest return flights from Portland (PDX) to London (STN) in July 2026 (see full year).
Return flights
| 09 Jul - 13 Jul | Icelandair | ||
| 20 Jul - 29 Jul | Air Canada | ||
| 12 Jul - 27 Jul | Icelandair | ||
| 12 Jul - 28 Jul | Air Canada | ||
| 31 Jul - 14 Aug | Icelandair | ||
| 27 Jul - 17 Aug | Lufthansa | ||
| 20 Jul - 31 Jul | Alaska Airlines |
Also check the deals for one-way flights from Portland to London in July.
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