Alaska Airlines Flights from United Kingdom to United States
Deals on one-way flights from United Kingdom to United States.*
London (LHR)to
Seattle (SEA)London (LHR)to
Seattle (SEA)London (LHR)to
Seattle (SEA)*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.
One-way low-fare flights United Kingdom to United States.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Sep 15, 2026 | From $597 Seen: 16 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Sep 21, 2026 | From $597 Seen: 16 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: May 27, 2026 | From $598 Seen: 15 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Sep 1, 2026 | From $618 Seen: 8 minutes ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Sep 10, 2026 | From $653 Seen: 16 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Nov 8, 2026 | From $653 Seen: 1 hour 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.