Dulles (IAD) to London (LHR)
Flight time
≈ 8h 08m
Bearing
49° NE
Dulles (IAD) to London (LHR) is 3,667 miles (5,902 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAD–LHR
US DOT T-100 · filed dataIn April 2026, British Airways operated the most departures, one of 3 carriers flying nonstop IAD–LHR; the Boeing 777-200 was the most common aircraft at 74% of departures; flights ran 75% full.
Departures
346
April 2026
Seats
88,921
both directions
Passengers
67,007
both directions
Load factor
75.4%
passengers ÷ seats
Who flies IAD–LHR?
British Airways operated the most nonstop IAD–LHR departures in April 2026 (174), one of 3 carriers on the route.
- BA
British Airways
174 departures · 42,354 seats
Share of departures50.3%78.3%
Load
- UA
United Airlines
118 departures · 32,495 seats
Share of departures34.1%74.6%
Load
- VS
Virgin Atlantic
54 departures · 14,072 seats
Share of departures15.6%68.4%
Load
What plane flies IAD–LHR?
In April 2026, the Boeing 777-200 flew 74% of IAD–LHR departures — more than any other aircraft type.
- Boeing 777-200
257 departures · 76.4% load
74.3% - Boeing 787-9
38 departures · 66.0% load
11.0% - Boeing 777-300ER
29 departures · 79.9% load
8.4% - Airbus A330-900
16 departures · 74.1% load
4.6% - Boeing 787-10
3 departures · 66.0% load
0.9% - Airbus A330-300
2 departures · 75.2% load
0.6% - Boeing 767-300
1 departures · 90.1% load
0.3%
How has IAD–LHR traffic changed?
Nonstop IAD–LHR departures fell from 365 in May 2025 to 346 in April 2026.
Monthly nonstop IAD–LHR traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
365 departures · 80,800 passengers
75.0%
Load
June 2025
349 departures · 88,001 passengers
85.7%
Load
July 2025
349 departures · 90,088 passengers
88.9%
Load
August 2025
364 departures · 85,305 passengers
81.3%
Load
September 2025
358 departures · 74,079 passengers
70.8%
Load
October 2025
335 departures · 71,423 passengers
71.8%
Load
November 2025
295 departures · 55,885 passengers
72.8%
Load
December 2025
294 departures · 63,000 passengers
81.1%
Load
January 2026
281 departures · 49,730 passengers
71.2%
Load
February 2026
249 departures · 39,292 passengers
61.7%
Load
March 2026
301 departures · 60,623 passengers
78.2%
Load
April 2026
346 departures · 67,007 passengers
75.4%
Load
By direction
The DOT files each direction separately — they rarely match.
IAD → LHR
77.0% full
173 departures · 34,216 passengers
LHR → IAD
73.7% full
173 departures · 32,791 passengers
Nonstop IAD–LHR traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
London
GB
London Heathrow Airport
Coordinates
51.47°N, 0.46°W
Hemisphere
N · W
Frequently asked
How far is Dulles (IAD) from London (LHR)?
IAD to LHR is 3,667 miles (5,902 km / 3,187 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAD to LHR?
A nonstop covers the 3,667-mile great-circle distance in roughly 8h 08m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAD–LHR?
In April 2026, the Boeing 777-200 flew the largest share of departures (74.3%), followed by the Boeing 787-9 (11.0%).
What mileage do I earn flying IAD–LHR?
Distance-based programs credit off the 3,667-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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