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Cheap flights from London to Washington

One-way from £290, found by travellers in the last 7 days. Aviasales checks the live price.

Departure
Return
Prices for nearby dates
Sun, Nov 22£296Mon, Nov 23£294Tue, Nov 24£295Wed, Nov 25£290Thu, Nov 26£324Fri, Nov 27£340Sat, Nov 28Any priceSun, Nov 29Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Baggage and fare rules are shown on Aviasales, where the price is checked live.

Cheapest
£290
Icelandair, flight FI 471Found 7 days ago, 1 adult
Check price on Aviasales
11:55LondonWed, Nov 25
Travel time 10h, 1 stopLGWIAD
16:55WashingtonWed, Nov 25
£294
Icelandair, flight FI 471Found 7 days ago, 1 adult
Check price on Aviasales
11:55LondonMon, Nov 23
Travel time 10h, 1 stopLGWIAD
16:55WashingtonMon, Nov 23
£295
Icelandair, flight FI 451Found 7 days ago, 1 adult
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12:15LondonTue, Nov 24
Travel time 9h 55m, 1 stopLHRBWI
17:10WashingtonTue, Nov 24
£296
Icelandair, flight FI 455Found 7 days ago, 1 adult
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20:35LondonSun, Nov 22
Travel time 9h 55m, 1 stopLHRBWI
01:30WashingtonMon, Nov 23
£324
Icelandair, flight FI 451Found 7 days ago, 1 adult
Check price on Aviasales
12:15LondonSat, Nov 21
Travel time 9h 55m, 1 stopLHRBWI
17:10WashingtonSat, Nov 21

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in United StatesTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Washington, booked ahead at a fixed price.
    See options
  • Things to do in WashingtonPopular tours from $54.95 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for United States from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Arrived 3+ hours late, cancelled at short notice or bumped? Up to £520 per person under UK261.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu1234£4315£4166–7–8–9–10–11–12£45213£40114–15£39816–17–18£53719£63420£54921£36722–23–24–25–26–27–28–29–30–31–

November 2026

MoTuWeThFrSaSu1£4322£4843–4–5–6–7–8–9–10–11–12–13–14–15–16–17–18–19–20–21£32422£29623£29424£29525£29026£32427£34028–29–30–

December 2026

MoTuWeThFrSaSu1–2–345678910111213141516171819202122232425262728293031
£296 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Nov 25, £290.

Lowest fares by month

In the fares found this week, November has the lowest: from £290 one-way, against £367 in October. Pick a month to see its cheapest date.

£0£200£400Oct£290NovDecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October£367Wed, Oct 212 stops
November£290Wed, Nov 251 stop
December—
January 2027£350Thu, Jan 71 stop
February 2027—
March 2027—
April 2027—
May 2027—
June 2027—
July 2027—
August 2027—
September 2027—

Questions travellers ask

What is the cheapest month to fly from London to Washington?

In the fares found this week, November has the lowest: from £290 one-way, against £367 in October.

Are there direct flights from London to Washington?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

Which day of the week is cheapest to fly?

In the fares we have, Thursday departures are the cheapest, with a typical lowest fare of £350. Monday is the priciest at about £452.

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