$868 Cheap Swiss International Air Lines flights London (LHR) to Washington (IAD)

View $868 flight on Sun, Jan 4, 2026Opens in a new window

$868 Cheap Swiss International Air Lines flights London (LHR) to Washington (IAD)

Prices were available within the past 7 days and start at $868 for one-way flights and $496 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Mon, Aug 25 - Wed, Sep 10
LHR
London
IAD
Washington
$496 Roundtrip, found 16 hours ago
$496
Roundtrip
found 16 hours ago
Select Swiss International Air Lines flight, departing Mon, Aug 25 from London to Washington, returning Wed, Sep 10, priced at $496 found 16 hours ago
Swiss International Air Lines
Mon, Aug 25 - Wed, Sep 10
LHR
London
IAD
Washington
$506 Roundtrip, found 16 hours ago
$506
Roundtrip
found 16 hours ago
Select Swiss International Air Lines flight, departing Mon, Aug 25 from London to Washington, returning Wed, Sep 10, priced at $506 found 16 hours ago
Swiss International Air Lines
Fri, Sep 19 - Sun, Sep 28
LHR
London
IAD
Washington
$589 Roundtrip, found 6 days ago
$589
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Fri, Sep 19 from London to Washington, returning Sun, Sep 28, priced at $589 found 6 days ago
Flights from London (LHR) to Washington (IAD)
Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
British Airways
Distance
3666 mi
Average flight time
3 hours 15 mins

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