Alaska Airlines Cheap Flights from London to United States
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Deals on roundtrip flights from London to United States.*
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London (LHR)to
Seattle (SEA)Aug 11, 2026 - Aug 19, 2026
From
$1,171
Seen: 1 day ago
Round-trip
Saver
London (LHR)to
Seattle (SEA)Aug 12, 2026 - Aug 20, 2026
From
$1,311
Seen: 12 hours ago
Round-trip
Saver
London (LHR)to
Seattle (SEA)Aug 17, 2026 - Aug 31, 2026
From
$1,182
Seen: 6 hours ago
Round-trip
Saver
London (LHR)to
Seattle (SEA)Aug 17, 2026 - Sep 2, 2026
From
$1,294
Seen: 6 hours ago
Round-trip
Saver
*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 London to United States.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| London (LHR) | Los Angeles (LAX) | One-way | Saver | Depart: Oct 6, 2026 | From $475 Seen: 9 hours ago | |
| London (LHR) | Los Angeles (LAX) | One-way | Saver | Depart: Sep 23, 2026 | From $516 Seen: 23 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Sep 27, 2026 | From $522 Seen: 1 day ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Nov 9, 2026 | From $522 Seen: 1 day ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Nov 23, 2026 | From $522 Seen: 1 day ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Feb 17, 2027 | From $522 Seen: 1 day ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Nov 11, 2026 | From $522 Seen: 7 hours ago | |
| London (LHR) | Seattle (SEA) | One-way | Saver | Depart: Nov 1, 2026 | From $522 Seen: 7 hours ago | |
| London (LHR) | Los Angeles (LAX) | One-way | Saver | Depart: Oct 22, 2026 | From $523 Seen: 1 day ago | |
| London (LHR) | Los Angeles (LAX) | One-way | Saver | Depart: Mar 21, 2027 | From $589 Seen: 5 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.