Book Cheap Flights to United Kingdom on Alaska Airlines
Great United Kingdom one-way flight deals.*
*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.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Sep 21, 2026 | From $290 Seen: 6 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Sep 17, 2026 | From $379 Seen: 12 hours ago | |
| Los Angeles (LAX) | London (LHR) | One-way | Saver | Depart: Aug 25, 2026 | From $403 Seen: 10 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Aug 18, 2026 | From $415 Seen: 15 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Oct 5, 2026 | From $415 Seen: 15 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Aug 16, 2026 | From $415 Seen: 17 hours ago | |
| Seattle (SEA) | London (LHR) | One-way | Saver | Depart: Jul 26, 2026 | From $415 Seen: 9 hours ago | |
| Portland (PDX) | London (LHR) | One-way | Saver | Depart: Oct 19, 2026 | From $419 Seen: 10 hours ago | |
| Los Angeles (LAX) | London (LHR) | One-way | Saver | Depart: Aug 13, 2026 | From $453 Seen: 12 hours ago | |
| Portland (PDX) | London (LHR) | One-way | Saver | Depart: Sep 25, 2026 | From $469 Seen: 7 hours ago | |
| Portland (PDX) | London (LHR) | One-way | Saver | Depart: Aug 27, 2026 | From $469 Seen: 12 hours ago | |
| Portland (PDX) | London (LHR) | One-way | Saver | Depart: Aug 2, 2026 | From $488 Seen: 13 hours ago | |
| Honolulu (HNL) | London (LHR) | One-way | Saver | Depart: Sep 28, 2026 | From $516 Seen: 9 hours ago | |
| Anchorage (ANC) | London (LHR) | One-way | Saver | Depart: Nov 16, 2026 | From $517 Seen: 1 hour ago | |
| Los Angeles (LAX) | London (LHR) | One-way | Saver | Depart: Sep 9, 2026 | From $533 Seen: 10 hours ago | |
| San Francisco (SFO) | London (LHR) | One-way | Saver | Depart: Jun 1, 2026 | From $566 Seen: 10 hours ago | |
| San Francisco (SFO) | London (LHR) | One-way | Saver | Depart: Jun 22, 2026 | From $566 Seen: 13 hours ago | |
| San Francisco (SFO) | London (LHR) | One-way | Saver | Depart: Aug 18, 2026 | From $566 Seen: 14 hours ago | |
| San Francisco (SFO) | London (LHR) | One-way | Saver | Depart: Sep 29, 2026 | From $566 Seen: 10 hours ago | |
| Anchorage (ANC) | London (LHR) | One-way | Saver | Depart: Oct 17, 2026 | From $567 Seen: 9 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.