
- Plan, book, fly with confidence
trending down icon Be in the knowGet alerts if flight prices drop or rise*bex rewards loyalty icon Book smarterSave up to 40% on select hotels after you book a flight*payments icon
₩534,800 Cheap United flights Seattle (SEA) to London (LON)
Prices were available within the past 7 days and start at ₩534,800 for one-way flights and ₩744,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 7 - Tue, Oct 14
SEA
Seattle
LHR
London
₩744,500 Roundtrip, found 2 days ago
₩744,500
Roundtrip
found 2 days ago

Tue, Sep 9 - Tue, Sep 16
SEA
Seattle
LHR
London
₩790,300 Roundtrip, found 3 days ago
₩790,300
Roundtrip
found 3 days ago

Mon, Jul 28 - Wed, Aug 6
SEA
Seattle
LHR
London
₩807,400 Roundtrip, found 2 days ago
₩807,400
Roundtrip
found 2 days ago

Mon, Jul 7 - Fri, Jul 11
SEA
Seattle
LGW
London
₩4,722,600 Roundtrip, just found
₩4,722,600
Roundtrip
just found

Mon, Jul 7 - Fri, Jul 11
SEA
Seattle
LGW
London
₩4,732,400 Roundtrip, just found
₩4,732,400
Roundtrip
just found
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Heathrow |
Distance | 7657 km |
Popular Domestic Routes in LON-All Airports
*Available to Expedia members.