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

View NZ$820 flight on Mon, 2 Feb. 2026Opens 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.

Finnair
Wed, 8 Oct. - Mon, 13 Oct.
BWI
Baltimore
LHR
London
NZ$1,488 Return, found 6 days ago
NZ$1,488
Return
found 6 days ago
Select Finnair flight, departing Wed, 8 Oct. from Baltimore to London, returning Mon, 13 Oct., priced at NZ$1,488 found 6 days ago
Finnair
Thu, 2 Apr. - Wed, 15 Apr.
IAD
Washington
LHR
London
NZ$1,514 Return, found 16 hours ago
NZ$1,514
Return
found 16 hours ago
Select Finnair flight, departing Thu, 2 Apr. from Washington to London, returning Wed, 15 Apr., priced at NZ$1,514 found 16 hours ago
Flight from Washington to London route information
Origin airport
Washington Dulles Intl.
Destination airport
Gatwick
Distance
5896 km
*Available to Expedia members.