
$484 Cheap United flights Washington (IAD) to London (LHR)
Prices were available within the past 7 days and start at $484 for one-way flights and $614 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Feb 15 - Tue, Feb 24
IAD
Washington
LHR
London
$614 Roundtrip, found 9 hours ago
$614
Roundtrip
found 9 hours ago

Wed, Feb 18 - Sun, Feb 22
IAD
Washington
LHR
London
$618 Roundtrip, found 9 hours ago
$618
Roundtrip
found 9 hours ago

Wed, Feb 18 - Sun, Feb 22
IAD
Washington
LHR
London
$625 Roundtrip, found 9 hours ago
$625
Roundtrip
found 9 hours ago

Wed, Feb 18 - Sun, Feb 22
IAD
Washington
LHR
London
$629 Roundtrip, found 9 hours ago
$629
Roundtrip
found 9 hours ago

Mon, Feb 16 - Sun, Feb 22
IAD
Washington
LHR
London
$642 Roundtrip, found 9 hours ago
$642
Roundtrip
found 9 hours ago

Wed, Feb 18 - Sun, Feb 22
IAD
Washington
LHR
London
$645 Roundtrip, found 9 hours ago
$645
Roundtrip
found 9 hours ago

Wed, Feb 18 - Sun, Feb 22
IAD
Washington
LHR
London
$646 Roundtrip, found 9 hours ago
$646
Roundtrip
found 9 hours ago

Wed, Feb 18 - Sun, Feb 22
IAD
Washington
LHR
London
$649 Roundtrip, found 9 hours ago
$649
Roundtrip
found 9 hours ago

Wed, Feb 18 - Sun, Feb 22
IAD
Washington
LHR
London
$651 Roundtrip, found 9 hours ago
$651
Roundtrip
found 9 hours ago

Wed, Feb 18 - Sun, Feb 22
IAD
Washington
LHR
London
$662 Roundtrip, found 9 hours ago
$662
Roundtrip
found 9 hours ago
Find the cheapest month to fly from Washington (IAD) to London (LHR)
January is typically the cheapest month to fly
From $444 - $934 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, Delta, Finnair, Iberia, KLM, Lufthansa, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic |
Popular airline | United |
Distance | 5866 km |
Average flight time | 12 hours 22 mins |
Explore a world of travel with Expedia
Most Popular United Routes from Washington
- Newark Liberty Intl. Airport to Colorado Springs (EWR - COS)
- Frankfurt to Atlanta (FRA - ATL)
- Chicago to Dallas (ORD - DFW)
- Charlotte to New York (CLT - LGA)
- Newark Liberty Intl. Airport to Phoenix (EWR - PHX)
- Washington to San Salvador (IAD - SAL)
- Billings to Des Moines (BIL - DSM)
- Los Angeles to Boston (LAX - BOS)
- Dallas to Dayton (DFW - DAY)
- Chicago to Great Falls (ORD - GTF)
Popular Domestic Routes in Heathrow
- Washington to San Salvador (IAD - SAL)
- Newark Liberty Intl. Airport to Phoenix (EWR - PHX)
- Nashville to Brussels (BNA - BRU)
- Chicago to Great Falls (ORD - GTF)
- Chicago to Great Falls (ORD - GTF)
- St. Louis to Miami (STL - MIA)
- Charlotte to Newark Liberty Intl. Airport (CLT - EWR)
- Chicago to Dallas (ORD - DFW)
- St. Louis to Miami (STL - MIA)
- Frankfurt to Atlanta (FRA - ATL)