RyanairDepart06:50
Wed 16 DecSTN → DCA
12h 40m · 2 stops
£301one way, per person
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- Cheapest fare
- £301
- Cheapest month
- December
- Direct flights
- Not recently
- Quickest trip
- 9h 50m
Ryanair · Wed 16 Dec
from £301
Usually 1+ stop
5,900 km
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Cheapest month to fly from London to Washington
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
Ryanair
IcelandairDepart20:35
Mon 28 DecLHR → IAD
9h 55m · 1 stop
£337one way, per person
View deal
IcelandairDepart20:35
Sun 27 DecLHR → IAD
9h 55m · 1 stop
£348one way, per person
View deal
easyJetDepart09:45
Tue 29 DecLGW → DCA
12h 01m · 2 stops
£365one way, per person
View deal
IcelandairDepart11:55
Sat 26 DecLGW → IAD
10h 00m · 1 stop
£366one way, per person
View deal
Aer LingusDepart08:50
Wed 30 DecLHR → IAD
9h 50m · 1 stop
£487one way, per person
View deal
Plan the rest of your trip to Washington
Where to stay, what to do and getting around, from our travel partners.
Getting around
About flights from London to Washington
London (LON) and Washington (WAS) are about 5,900 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 9h 50m. Over the next few months, one-way fares start from £301, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from London to Washington?
The cheapest one-way fare we've seen recently is £301 with Ryanair, departing Wednesday, 16 December 2026. Over the coming months, the lowest fare in each month ranges from £301 to £359.
What is the cheapest month to fly from London to Washington?
December 2026 currently has the lowest fares, from £301 one way.
Are there direct flights from London to Washington?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from London to Washington?
The quickest journey we've seen takes about 9h 50m. London and Washington are around 5,900 km apart.
Which airlines fly from London to Washington?
Recent fares on this route were with Norse Atlantic UK, Ryanair, Wizz Air UK, Icelandair, easyJet and Aer Lingus.
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