Cheap flights to Washington – Compare and Save

— SEA
2 May — 9 May1
1 adult
1 adult, Economy, 0 bags

Flights to Washington in 2026

Find the latest flights to Washington in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 2 April 2026.

Return from

£454

One-way from

£251

Popular in

July

Cheapest in

February

Average price

£528

Good round-trip deal

£660 or less

Good one-way deal

£505 or less
British Airways
  • British Airways
  • 22/5-24/6
  • Nonstop
  • 19h 00m total
  • London to Seattle
5/6
  • 5/6
  • 1 total stop
  • 33h 30m total
  • London to Washington
Highest demand for flights based on searches. 12% potential increase in price (£75 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Average for return flights in April 2026
Price to beat on a round-trip flight from London to Washington.
Price to beat on a one-way flight from London to Washington.

Find flights to Washington

Browse one-way and return flights deals to Washington on Cheapflights. Flight deals are based on user searches and were last updated on 2 April 2026
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Cheapest flights to Washington
Explore the most affordable flight options available to Washington. Find the lowest fares based on data from user searches, with prices last updated on 2 April 2026.

Fri 22/509:50
LHR
-
SEA
Nonstop9h 45m
British Airways
Wed 24/613:30
SEA
-
LHR
Nonstop9h 15m
British Airways
Deal found 29/3£454
Mon 27/406:30
STN
-
SEA
3 stops35h 10m
Multiple Airlines
Mon 4/515:40
SEA
-
STN
2 stops19h 35m
Multiple Airlines
Deal found 30/3£455
Thu 1/1016:30
LHR
-
SEA
Nonstop9h 55m
British Airways
Mon 12/1020:20
SEA
-
LHR
Nonstop9h 25m
British Airways
Deal found 30/3£462
Mon 13/408:30
STN
-
SEA
3 stops37h 49m
Multiple Airlines
Sun 26/415:40
SEA
-
STN
2 stops20h 15m
Multiple Airlines
Deal found 30/3£467
Mon 13/421:25
LHR
-
SEA
1 stop31h 15m
Icelandair
Sun 26/415:40
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 30/3£478
Thu 23/410:25
LGW
-
SEA
1 stop13h 35m
Condor
Mon 27/418:10
SEA
-
LGW
1 stop16h 40m
Condor
Deal found 31/3£482
Mon 13/415:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Mon 20/415:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 1/4£483
Sat 16/521:25
LHR
-
SEA
1 stop31h 15m
Icelandair
Mon 3/823:25
SEA
-
LHR
1 stop28h 30m
Icelandair
Deal found 31/3£483
Wed 2/915:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Wed 30/919:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 1/4£484
Wed 2/913:05
LHR
-
SEA
1 stop15h 35m
Icelandair
Wed 30/915:40
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 1/4£484
Tue 8/1211:55
LGW
-
SEA
1 stop13h 05m
Icelandair
Sun 13/1214:35
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 31/3£485
Wed 15/409:50
LHR
-
SEA
Nonstop9h 45m
British Airways
Mon 20/420:20
SEA
-
LHR
Nonstop9h 25m
British Airways
Deal found 1/4£485

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