$506 Cheap JetBlue Airways flights Seattle (SEA) to London (LHR)

View $506 flight on Fri, Sep 18, 2026Opens in a new window

$506 Cheap JetBlue Airways flights Seattle (SEA) to London (LHR)

Prices were available within the past 7 days and start at $506 for one-way flights and $1,120 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Fri, Sep 18 - Mon, Sep 28
SEA
Seattle
LHR
London
$1,120 Roundtrip, found 7 hours ago
$1,120
Roundtrip
found 7 hours ago
Select JetBlue Airways flight, departing Fri, Sep 18 from Seattle to London, returning Mon, Sep 28, priced at $1,120 found 7 hours ago

Find the cheapest month to fly from Seattle (SEA) to London (LHR)

July is typically the cheapest month to fly

From $757 - $1,096 per traveler.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Turkish Airlines, United, Virgin Atlantic, WestJet
Popular airline
Alaska Airlines
Distance
7657 km
Average flight time
17 hours 29 mins

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