Book Cheap Flights to United Kingdom on Alaska Airlines
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1 Passenger
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Great United Kingdom one-way flight deals.*
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Seattle (SEA)to
London (LHR)Depart: Aug 16, 2026
From
$374
Seen: 25 minutes ago
One-way
Saver
Seattle (SEA)to
London (LHR)Depart: Aug 15, 2026
From
$424
Seen: 11 hours ago
One-way
Saver
Seattle (SEA)to
London (LHR)Depart: Jul 21, 2026
From
$689
Seen: 5 hours ago
One-way
Saver
Seattle (SEA)to
London (LHR)Depart: Aug 3, 2026
From
$689
Seen: 4 hours ago
One-way
Saver
Seattle (SEA)to
London (LHR)Depart: Aug 4, 2026
From
$689
Seen: 13 hours ago
One-way
Saver
Portland (PDX)to
London (LHR)Depart: Jul 29, 2026
From
$983
Seen: 5 hours ago
One-way
Saver
Portland (PDX)to
London (LHR)Depart: Aug 1, 2026
From
$1,033
Seen: 9 hours ago
One-way
Saver
Portland (PDX)to
London (LHR)Depart: Jul 18, 2026
From
$1,033
Seen: 3 hours ago
One-way
Saver
San Francisco (SFO)to
London (LHR)Depart: Aug 15, 2026
From
$513
Seen: 23 minutes ago
One-way
Saver
Anchorage (ANC)to
London (LHR)Depart: Aug 9, 2026
From
$634
Seen: 23 minutes ago
One-way
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 offers for plane tickets to United Kingdom.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Mar 1, 2027 | From $325 Seen: 14 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Apr 4, 2027 | From $325 Seen: 14 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Oct 27, 2026 | From $325 Seen: 13 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Apr 6, 2027 | From $325 Seen: 7 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Feb 10, 2027 | From $325 Seen: 4 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Nov 4, 2026 | From $325 Seen: 1 hour ago | |
| Los Angeles (LAX) | London (LHR) | One-way | Saver | Depart: Jan 13, 2027 | From $329 Seen: 12 hours ago | |
| Portland (PDX) | London (LHR) | One-way | Saver | Depart: Nov 16, 2026 | From $339 Seen: 6 hours ago | |
| Anchorage (ANC) | London (LHR) | One-way | Saver | Depart: Feb 15, 2027 | From $339 Seen: 5 hours ago | |
| Honolulu (HNL) | London (LHR) | One-way | Saver | Depart: Nov 4, 2026 | From $370 Seen: 7 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.