$489 Cheap Delta flights Seattle (SEA) to London (LCY)

View $489 flight on Tue, Sep 2, 2025Opens in a new window

$489 Cheap Delta flights Seattle (SEA) to London (LCY)

Prices were available within the past 7 days and start at $489 for one-way flights and $741 for roundtrip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Delta
Wed, Sep 3 - Thu, Sep 18
SEA
Seattle
LCY
London
$741
Roundtrip
Found 1 day ago
Select Delta flight, departing Wed, Sep 3 from Seattle to London, returning Thu, Sep 18, priced at $741 Found 1 day ago
Delta
Sun, Aug 31 - Thu, Sep 18
SEA
Seattle
LCY
London
$785
Roundtrip
Found 1 day ago
Select Delta flight, departing Sun, Aug 31 from Seattle to London, returning Thu, Sep 18, priced at $785 Found 1 day ago
Delta
Wed, Sep 3 - Sat, Sep 13
SEA
Seattle
LCY
London
$791
Roundtrip
Found 1 day ago
Select Delta flight, departing Wed, Sep 3 from Seattle to London, returning Sat, Sep 13, priced at $791 Found 1 day ago
Delta
Sun, Aug 31 - Mon, Sep 15
SEA
Seattle
LCY
London
$811
Roundtrip
Found 1 day ago
Select Delta flight, departing Sun, Aug 31 from Seattle to London, returning Mon, Sep 15, priced at $811 Found 1 day ago
Delta
Sun, Aug 31 - Sun, Sep 14
SEA
Seattle
LCY
London
$835
Roundtrip
Found 1 day ago
Select Delta flight, departing Sun, Aug 31 from Seattle to London, returning Sun, Sep 14, priced at $835 Found 1 day ago
Flights from Seattle (SEA) to London (LCY)
Origin airport
Seattle - Tacoma Intl.
Destination airport
London City
Airlines serving
Aer Lingus, British Airways, Delta, KLM, Lufthansa, Swiss International Air Lines, Virgin Atlantic
Popular airline
Swiss International Air Lines
Distance
7675 km