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
Filed traffic dataIn July 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 65% of departures; flights ran 89% full.
Departures
355
July 2026
Seats
93,745
both directions
Passengers
83,314
both directions
Load factor
88.9%
RPM ÷ ASM
Who flies IAD–LHR?
British Airways operated the most nonstop IAD–LHR departures in July 2026 (176), one of 3 carriers on the route.
- BA
British Airways
176 departures · 44,965 seats
Share of departures49.6%87.3%
Load
- UA
123 departures · 33,948 seats
Share of departures34.6%91.8%
Load
- VS
Virgin Atlantic
56 departures · 14,832 seats
Share of departures15.8%87.1%
Load
What plane flies IAD–LHR?
In July 2026, the Boeing 777-200 flew 65% of IAD–LHR departures — more than any other aircraft type.
- Boeing 777-200
230 departures · 89.6% load
64.8% - Boeing 777-300ER
69 departures · 87.9% load
19.4% - Airbus A330-900
30 departures · 86.7% load
8.5% - Airbus A330-300
24 departures · 88.2% load
6.8% - Boeing 787-9
2 departures · 78.5% load
0.6%
How has IAD–LHR traffic changed?
Nonstop IAD–LHR departures fell from 364 in August 2025 to 355 in July 2026.
Monthly nonstop IAD–LHR traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
May 2026
364 departures · 73,035 passengers
79.8%
Load
June 2026
344 departures · 78,278 passengers
87.3%
Load
July 2026
355 departures · 83,314 passengers
88.9%
Load
By direction
Each direction is filed separately — they rarely match.
IAD → LHR
82.7% full
179 departures · 39,085 passengers
LHR → IAD
95.1% full
176 departures · 44,229 passengers
Nonstop IAD–LHR traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
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 July 2026, the Boeing 777-200 flew the largest share of departures (64.8%), followed by the Boeing 777-300ER (19.4%).
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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