Travel with Air Canada from Seattle to London, UK (SEA - LHR) from CAD 2,006*
*Fares displayed have been collected within the last 48 hours and may no longer be available at the time of booking. Learn more about this offer. Additional baggage fees and charges for optional products and services may apply.
Flights between Seattle and London, UK - our lowest fares in cash
*Fares displayed have been collected within the last 48 hours and may no longer be available at the time of booking. Learn more about this offer. Additional baggage fees and charges for optional products and services may apply.
Flights between Seattle and London, UK - our lowest fares in points
From | To | Fare Type | Departure | Price |
|---|---|---|---|---|
| Seattle (SEA) | London, UK (LHR) | Round-trip / Economy | May 29, 2026 - Jun 06, 2026 | From 80,000 pts + CAD 396 Viewed: 3 hours ago |
| Seattle (SEA) | London, UK (LHR) | Round-trip / Economy | Apr 13, 2026 - Apr 20, 2026 | From 80,000 pts + CAD 427 Viewed: 18 hours ago |
| Seattle (SEA) | London, UK (LHR) | Round-trip / Economy | Apr 12, 2026 - Apr 20, 2026 | From 80,000 pts + CAD 159 Viewed: 18 hours ago |
| Seattle (SEA) | London, UK (LHR) | Round-trip / Economy | Jun 30, 2026 - Aug 21, 2026 | From 80,000 pts + CAD 461 Viewed: 19 hours ago |
| Seattle (SEA) | London, UK (LHR) | Round-trip / Economy | Jun 22, 2026 - Aug 21, 2026 | From 88,200 pts + CAD 427 Viewed: 19 hours ago |
| Seattle (SEA) | London, UK (LHR) | Round-trip / Economy | Jun 24, 2026 - Aug 21, 2026 | From 125,000 pts + CAD 159 Viewed: 19 hours ago |
*Points displayed do not reflect preferred pricing for Aeroplan Elite Status Members and/or Aeroplan Credit Cardholders. Prices have been collected within the past 48 hrs and may no longer be available at time of booking. Learn more about this offer. Additional baggage fees and charges for optional products and services may apply.