Alaska Airlines Flights from London to Seattle
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1 Passenger
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Lowest fares from London to Seattle
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One-way low-fare flights London to Seattle.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Sep 15, 2026 | From $525 Seen: 1 day ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Sep 16, 2026 | From $525 Seen: 1 day ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Sep 29, 2026 | From $525 Seen: 13 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Nov 4, 2026 | From $525 Seen: 8 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Sep 7, 2026 | From $525 Seen: 12 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Oct 9, 2026 | From $581 Seen: 1 day ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Dec 16, 2026 | From $593 Seen: 1 day ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Oct 14, 2026 | From $593 Seen: 1 day ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.