CA $523 Cheap British Airways fights from Washington (WAS) to London (LON)

View CA $523 flight on Mon, Apr. 27, 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 30% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

British Airways flights from Washington to London (WAS→LON)

Prices were available within the past 7 days and start at CA $523 for one-way flights and CA $704 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Tue, Sep. 23 - Thu, Oct. 2
IAD
Washington
LHR
London
CA $704 Roundtrip, found 15 hours ago
CA $704
Roundtrip
found 15 hours ago
Select British Airways flight, departing Tue, Sep. 23 from Washington to London, returning Thu, Oct. 2, priced at CA $704 found 15 hours ago
British Airways
Sun, Dec. 7 - Tue, Dec. 16
IAD
Washington
LHR
London
CA $707 Roundtrip, found 6 days ago
CA $707
Roundtrip
found 6 days ago
Select British Airways flight, departing Sun, Dec. 7 from Washington to London, returning Tue, Dec. 16, priced at CA $707 found 6 days ago
British Airways
Tue, Sep. 23 - Thu, Oct. 2
DCA
Washington
LHR
London
CA $712 Roundtrip, found 15 hours ago
CA $712
Roundtrip
found 15 hours ago
Select British Airways flight, departing Tue, Sep. 23 from Washington to London, returning Thu, Oct. 2, priced at CA $712 found 15 hours ago
British Airways
Mon, Sep. 1 - Wed, Sep. 10
DCA
Washington
LGW
London
CA $743 Roundtrip, found 2 days ago
CA $743
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Sep. 1 from Washington to London, returning Wed, Sep. 10, priced at CA $743 found 2 days ago
British Airways
Mon, Sep. 1 - Wed, Sep. 10
DCA
Washington
LGW
London
CA $767 Roundtrip, found 2 days ago
CA $767
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Sep. 1 from Washington to London, returning Wed, Sep. 10, priced at CA $767 found 2 days ago
British Airways
Thu, Sep. 11 - Wed, Sep. 17
DCA
Washington
LHR
London
CA $780 Roundtrip, found 18 hours ago
CA $780
Roundtrip
found 18 hours ago
Select British Airways flight, departing Thu, Sep. 11 from Washington to London, returning Wed, Sep. 17, priced at CA $780 found 18 hours ago
Flight from Washington to London (IAD - LGW) route information
Origin airport
Washington Dulles Intl.
Destination airport
Gatwick
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Fly Play, Iberia, Icelandair, JetBlue Airways, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, Virgin Atlantic
Popular airline
British Airways
Distance
5896 km
*Available to Expedia members.