Book Cheap Flights from United Kingdom with Alaska Airlines
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1 Passenger
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Lowest one-way fares from United Kingdom.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Oct 30, 2026 | From $524 Seen: 17 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Dec 1, 2026 | From $524 Seen: 17 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Oct 27, 2026 | From $524 Seen: 15 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Dec 6, 2026 | From $524 Seen: 12 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Jan 8, 2027 | From $524 Seen: 6 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Jan 16, 2027 | From $524 Seen: 14 hours 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.