$499 Cheap Delta flights Washington (IAD) to London (LHR)

View $499 flight on Wed, Apr 29, 2026Opens in a new window

$499 Cheap Delta flights Washington (IAD) to London (LHR)

Prices were available within the past 7 days and start at $499 for one-way flights and $852 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Apr 29 - Tue, May 5
IAD
Washington
LHR
London
$852 Roundtrip, found 9 hours ago
$852
Roundtrip
found 9 hours ago
Select Delta flight, departing Wed, Apr 29 from Washington to London, returning Tue, May 5, priced at $852 found 9 hours ago
Delta
Wed, Apr 29 - Tue, May 5
IAD
Washington
LHR
London
$880 Roundtrip, found 9 hours ago
$880
Roundtrip
found 9 hours ago
Select Delta flight, departing Wed, Apr 29 from Washington to London, returning Tue, May 5, priced at $880 found 9 hours ago
Delta
Wed, Apr 29 - Tue, May 5
IAD
Washington
LHR
London
$895 Roundtrip, found 9 hours ago
$895
Roundtrip
found 9 hours ago
Select Delta flight, departing Wed, Apr 29 from Washington to London, returning Tue, May 5, priced at $895 found 9 hours ago
Delta
Wed, Apr 29 - Mon, May 4
IAD
Washington
LHR
London
$902 Roundtrip, found 9 hours ago
$902
Roundtrip
found 9 hours ago
Select Delta flight, departing Wed, Apr 29 from Washington to London, returning Mon, May 4, priced at $902 found 9 hours ago
Delta
Wed, Apr 29 - Tue, May 5
IAD
Washington
LHR
London
$908 Roundtrip, found 9 hours ago
$908
Roundtrip
found 9 hours ago
Select Delta flight, departing Wed, Apr 29 from Washington to London, returning Tue, May 5, priced at $908 found 9 hours ago
Delta
Wed, Apr 29 - Tue, May 5
IAD
Washington
LHR
London
$913 Roundtrip, found 9 hours ago
$913
Roundtrip
found 9 hours ago
Select Delta flight, departing Wed, Apr 29 from Washington to London, returning Tue, May 5, priced at $913 found 9 hours ago

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city center is 28 minutes. Flights from $902
LHR
Heathrow
Cheapest
Average driving time to city center28 min
Flights from $902

Find the cheapest month to fly from Washington (IAD) to London (LHR)

April is typically the cheapest month to fly

From $470 - $908 per traveler.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Heathrow
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
Virgin Atlantic
Distance
5866 km
Average flight time
12 hours 32 mins

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