AirHint found the following cheapest one-way flights from Seattle (SEA) to London (STN) in January 2026 (see full year).
One-Way flights
| 29 Jan | Icelandair | ||
| 25 Jan | Icelandair | ||
| 11 Jan | Icelandair | ||
| 09 Jan | Alaska Airlines | ||
| 08 Jan | Lufthansa | ||
| 16 Jan | Lufthansa | ||
| 01 Jan | Lufthansa |
Also check the deals for return flights from Seattle to London in January.
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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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