Washington to London Flight Distance
Washington Dulles International Airport (IAD) to London Heathrow Airport (LHR)
Primary sources · 6
- [1] Vincenty (1975) — Direct and Inverse Solutions of Geodesics on the Ellipsoid — the iterative formula used for distance · Survey Review XXIII (176), pp. 88–93 · April 1975 https://www.ngs.noaa.gov/PUBS_LIB/inverse.pdf
- [2] NGA.STND.0036_1.0.0_WGS84 — WGS-84 reference ellipsoid (a = 6,378,137 m, 1/f = 298.257223563) · NGA Standard · July 2014 https://earth-info.nga.mil/index.php?dir=wgs84&action=wgs84
- [3] DESNZ 2024 conversion factors — Per-km kg CO₂e factors for the three distance bands and four cabin classes · UK Department for Energy Security and Net Zero · June 2024 https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2024
- [4] Lee et al. (2021) — Effective radiative forcing of aviation — the science behind the 1.9 × CO₂ → CO₂e uplift · Atmospheric Environment 244, 117834 · January 2021 https://doi.org/10.1016/j.atmosenv.2020.117834
- [5] OpenFlights — Airport coordinates and IATA codes · openflights.org/data.php · Community-maintained https://openflights.org/data.php
- [6] Sack (2010) — Jet-lag review — clinical chronobiology and asymmetric recovery rates · New England Journal of Medicine 362:440 · February 2010 https://www.nejm.org/doi/full/10.1056/NEJMcp0909838
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Your Route Summary
What This Means For Your Trip
Flight Duration: At 3,677 miles, this long-haul flight will take approximately 7h 48m. Plan for a substantial flight with meals, entertainment, and rest time.
Time Adjustment: London is 5 hours ahead of Washington. Expect mild jet lag with 1-2 days to fully adjust.
Environmental Impact: An economy class seat produces approximately 888 kg of CO2. Consider carbon offset programs—planting 81 trees could offset this flight.
Flight Options: 8 airlines serve this route, giving you options for schedule and price comparison.
Complete Flight Analysis
| Metric | Value | Category / Reference |
|---|---|---|
| Distance (Miles) | 3,677 mi | Primary frequent flyer unit |
| Distance (Kilometers) | 5,917 km | International standard |
| Distance (Nautical Miles) | 3,195 nm | Aviation standard |
| Flight Time | 7h 48m | Based on 850 km/h cruise + ground time |
| Route Classification | LONG HAUL | Long-haul flight (4,000 - 12,000 km) |
| Flight Direction | 49° NE | Northeast |
| Cruising Altitude | 39,000 ft | FL390 (11,887 m) |
| Time Difference | +5h | Jet lag: mild |
| CO2 (Economy) | 888 kg | DEFRA 2024 factors |
| CO2 (Business) | 2574 kg | 2.9x economy |
| CO2 (First Class) | 3550 kg | 4x economy |
| Trees to Offset | 81 | Economy class, per passenger |
| Fuel per Passenger | 178 L | ~32,040 L total (180 pax) |
| Operating Airlines | 8 | Direct flights available |
Tips for This Route
Washington Dulles International Airport
Washington, United States
London Heathrow Airport
London, United Kingdom
Airlines Flying This Route
8 airlines operate flights between Washington and London.
Flight Details
Flight Midpoint
The geographic midpoint of this flight is located at:
Carbon Emissions by Cabin Class
CO2 emissions vary by cabin class due to seat space allocation. Based on DEFRA 2024 emission factors.
Jet Lag & Travel Tips
- Adjust sleep schedule 1-2 hours before departure
- Stay hydrated during the flight
- Get sunlight exposure at destination
Seat Recommendations
Distance in Perspective
Distance & Speed Reference
| Measurement | Value |
|---|---|
| Statute Miles | 3,677 mi |
| Kilometers | 5,917 km |
| Nautical Miles | 3,195 nm |
| Meters | 5,917,000 m |
| Feet | 19,414,560 ft |
| Flight Time (850 km/h) | 7h 48m |
Travel Speed Comparison
How long would it take to cover the 5,917 km between Washington and London at different speeds?
| Mode | Speed | Time |
|---|---|---|
| Commercial Jet | 850 km/h | 7h 48m |
| Turboprop Aircraft | 500 km/h | 11h 50m |
| Bullet Train | 320 km/h | 18h 29m |
| Car (highway) | 100 km/h | 59h 10m |
| Walking | 5 km/h | 1,183h (49 days) |
| Speed of Sound | 1,235 km/h | 4h 47m |
Round Trip Summary
Quick Facts
Routes from IAD
View all routesFrequently Asked Questions
How far is Washington from London?
The flight distance from Washington Dulles International Airport (IAD) to London Heathrow Airport (LHR) is 3,677 miles (5,917 km). This is the great circle distance calculated using the Vincenty formula.
How long is the flight?
A direct flight takes approximately 7h 48m. This is a long-haul flight typically cruising at 39,000 feet (FL390).
What is the time difference?
London is 5 hours ahead of Washington. Expect mild jet lag with ~3 days recovery time.
What airlines fly this route?
8 airlines operate this route: American Airlines, British Airways, Delta Air Lines and 5 more.
What is the carbon footprint?
Economy class: 888 kg CO2 per passenger. Business class: 2574 kg. First class: 3550 kg. Offset with ~81 trees.
Which seat side is best?
For this Northeast flight, the left side offers the best views away from sun glare. Consider an aisle seat for easier movement on this long flight.
Can I drive from Washington to London instead of flying?
Driving is not practical for this 5,917 km distance, especially across international borders. It would theoretically take over 74 hours of driving. Flying at 7h 48m is the recommended option.
What aircraft typically fly this route?
This long-haul route is typically served by Boeing 777, Airbus A350, Boeing 787 Dreamliner aircraft. Wide-body aircraft are standard for this distance, offering more comfort for the longer journey.
How can I offset the carbon from this flight?
An economy class seat on this route produces 888 kg CO2. You can offset this by planting approximately 81 trees, purchasing verified carbon credits through programs like Gold Standard or Verra, or supporting renewable energy projects. Many airlines also offer built-in carbon offset options during booking.
External Resources & References
Learn more about the airports, aviation data, and carbon emissions methodology used in this calculation.