
$533 Cheap United flights Seattle (SEA) to London (LHR)
Prices were available within the past 7 days and start at $533 for one-way flights and $703 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Apr 4 - Sat, Apr 18
SEA
Seattle
LHR
London
$703 Roundtrip, found 2 days ago
$703
Roundtrip
found 2 days ago

Sat, Apr 4 - Sat, Apr 18
SEA
Seattle
LHR
London
$721 Roundtrip, found 2 days ago
$721
Roundtrip
found 2 days ago

Sat, Apr 4 - Sat, Apr 18
SEA
Seattle
LHR
London
$730 Roundtrip, found 2 days ago
$730
Roundtrip
found 2 days ago

Sat, Apr 4 - Sat, Apr 18
SEA
Seattle
LHR
London
$748 Roundtrip, found 2 days ago
$748
Roundtrip
found 2 days ago

Sat, Apr 4 - Sat, Apr 18
SEA
Seattle
LHR
London
$773 Roundtrip, found 2 days ago
$773
Roundtrip
found 2 days ago

Sat, Apr 4 - Sat, Apr 18
SEA
Seattle
LHR
London
$780 Roundtrip, found 2 days ago
$780
Roundtrip
found 2 days ago
Find the cheapest month to fly from Seattle (SEA) to London (LHR)
October is typically the cheapest month to fly
From $477 - $843 per traveler.
Origin airport | Seattle - Tacoma Intl. |
|---|---|
Destination airport | Heathrow |
Distance | 7657 km |
Average flight time | 17 hours 35 mins |
Most Popular United Routes from Seattle
Most Popular United Routes from London
- Newark Liberty Intl. Airport to Los Angeles (EWR - LAX)
- Bozeman to Philadelphia (BZN - PHL)
- Nashville to Hamburg (BNA - HAM)
- Detroit to Las Vegas (DTW - LAS)
- Houston to Manila (IAH - MNL)
- Nashville to Hamburg (BNA - HAM)
- Miami to Nashville (MIA - BNA)
- Chicago to Las Vegas (ORD - LAS)
- Detroit to Phoenix (DTW - PHX)
- Cincinnati to Boston (CVG - BOS)
Popular Domestic Routes in Heathrow
- Charlotte to Newark Liberty Intl. Airport (CLT - EWR)
- Detroit to Miami (DTW - MIA)
- Detroit to Phoenix (DTW - PHX)
- Orange County to Phoenix (SNA - PHX)
- Detroit to Las Vegas (DTW - LAS)
- Grand Rapids to Tampa (GRR - TPA)
- New York to Hong Kong (JFK - HKG)
- Detroit to Miami (DTW - MIA)
- Chicago to Las Vegas (ORD - LAS)
- Newark Liberty Intl. Airport to Miami (EWR - MIA)