Explore Air Canada flights from Seattle to United Kingdom from USD 693*
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*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.
Best fares between Seattle and United Kingdom
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Seattle (SEA)to
London, UK (LHR)Mar 17, 2026 - Mar 23, 2026
From
USD 693
Round-trip
Economy
Seattle (SEA)to
London, UK (LHR)Apr 08, 2026 - Apr 18, 2026
From
USD 822
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.
Find low fares between Seattle and United Kingdom
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No popular fares were found for the options selected. Try updating your selection.
No popular fares were found for the options selected. Try updating your selection.*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.