Lowest Priced Flights to London on Alaska Airlines starting at $325*
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Most popular flights to London on Alaska Airlines.*
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Seattle (SEA)to
London (LHR)Depart: Sep 16, 2026
From
$799
Seen: 1 hour ago
One-way
Main
Seattle (SEA)to
London (LHR)Depart: Oct 5, 2026
From
$3,264
Seen: 1 hour ago
One-way
Main
Portland (PDX)to
London (LHR)Depart: Sep 8, 2026
From
$439
Seen: 8 minutes ago
One-way
Main
Honolulu (HNL)to
London (LHR)Depart: Sep 12, 2026
From
$761
Seen: 2 hours ago
One-way
Main
New York (JFK)to
London (LHR)Depart: Sep 11, 2026
From
$3,305
Seen: 9 hours ago
One-way
Main
*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.
Top offers for London one-way flights.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Feb 10, 2027 | From $325 Seen: 16 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: May 10, 2027 | From $325 Seen: 1 hour ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Jul 18, 2027 | From $325 Seen: 9 hours ago | |
| Portland (PDX) | London (LHR) | One-way | Saver | Depart: Dec 1, 2026 | From $329 Seen: 27 minutes ago | |
| Portland (PDX) | London (LHR) | One-way | Saver | Depart: Nov 9, 2026 | From $329 Seen: 6 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Dec 14, 2026 | From $357 Seen: 7 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Dec 27, 2026 | From $357 Seen: 4 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Oct 7, 2026 | From $374 Seen: 5 hours ago | |
| Portland (PDX) | London (LHR) | One-way | Saver | Depart: May 20, 2027 | From $448 Seen: 12 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.