Cheap KLM Flights from Washington to London (WAS→LON)

View NZ$679 flight on Sun, 10 Aug. 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 35% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Wed., 13 Aug. - Wed., 27 Aug.
IAD
Washington
LGW
London
NZ$888 Return, found 1 day ago
NZ$888
Return
found 1 day ago
Select KLM flight, departing Wed., 13 Aug. from Washington to London, returning Wed., 27 Aug., priced at NZ$888 found 1 day ago
KLM
Wed., 6 Aug. - Wed., 13 Aug.
IAD
Washington
LGW
London
NZ$900 Return, found 10 hours ago
NZ$900
Return
found 10 hours ago
Select KLM flight, departing Wed., 6 Aug. from Washington to London, returning Wed., 13 Aug., priced at NZ$900 found 10 hours ago
KLM
Sun., 17 Aug. - Tue., 26 Aug.
IAD
Washington
LHR
London
NZ$930 Return, found 3 days ago
NZ$930
Return
found 3 days ago
Select KLM flight, departing Sun., 17 Aug. from Washington to London, returning Tue., 26 Aug., priced at NZ$930 found 3 days ago
KLM
Sun., 17 Aug. - Tue., 26 Aug.
DCA
Washington
LHR
London
NZ$950 Return, found 3 days ago
NZ$950
Return
found 3 days ago
Select KLM flight, departing Sun., 17 Aug. from Washington to London, returning Tue., 26 Aug., priced at NZ$950 found 3 days ago
KLM
Sun., 20 Jul. - Tue., 29 Jul.
DCA
Washington
LHR
London
NZ$964 Return, found 6 days ago
NZ$964
Return
found 6 days ago
Select KLM flight, departing Sun., 20 Jul. from Washington to London, returning Tue., 29 Jul., priced at NZ$964 found 6 days ago
KLM
Sun., 13 Jul. - Thu., 24 Jul.
DCA
Washington
LGW
London
NZ$992 Return, found 2 days ago
NZ$992
Return
found 2 days ago
Select KLM flight, departing Sun., 13 Jul. from Washington to London, returning Thu., 24 Jul., priced at NZ$992 found 2 days ago
KLM
Mon., 4 Aug. - Mon., 11 Aug.
IAD
Washington
LGW
London
NZ$993 Return, found 2 days ago
NZ$993
Return
found 2 days ago
Select KLM flight, departing Mon., 4 Aug. from Washington to London, returning Mon., 11 Aug., priced at NZ$993 found 2 days ago
KLM
Mon., 17 Nov. - Mon., 24 Nov.
BWI
Baltimore
LHR
London
NZ$998 Return, found 5 days ago
NZ$998
Return
found 5 days ago
Select KLM flight, departing Mon., 17 Nov. from Baltimore to London, returning Mon., 24 Nov., priced at NZ$998 found 5 days ago
Flight from Washington to London route 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, ITA Airways, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
Virgin Atlantic
Distance
5866 km
*Available to Expedia members.