Explore Air Canada flights from Seattle to United Kingdom from CAD 1,115*

Flights between Seattle and United Kingdom - our lowest fares in cash

CAD
My travel class is:

Seattle (SEA)to

London, UK (LHR)
Mar 16, 2025 - Mar 30, 2025
CAD 1,115*
Round-trip
/
Economy

*Fares displayed have been collected within the last 48hrs 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.

Flights from Seattle to United Kingdom | Air Canada

Flights between Seattle and United Kingdom - our lowest fares in points

pts
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*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.

Check out popular routes from Seattle to United Kingdom