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Flights between Dulles (IAD) and London (LHR)

Washington Dulles International Airport, United States ↔ London Heathrow Airport, United Kingdom

A direct route between Dulles and London appears in the OpenFlights route network.

Airlines currently operating this route:

Observed from recent schedules · as of 22 Jul 2026 — sampled, not a live timetable; confirm with the airline.

British Airways (BA)United Airlines (UA)Virgin Atlantic (VS)
Distance
5,902 km
3,667 miles
Est. flight time
7h 53m
great-circle estimate
Time difference
~5h
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in United States

Jan
4°
9/-1
70mm
Feb
6°
11/1
60mm
Mar
11°
16/6
75mm
Apr
17°
22/12
80mm
May
23°
28/18
95mm
Jun
28°
33/23
100mm
Jul
30°
35/25
95mm
Aug
29°
34/24
90mm
Sep
25°
30/20
80mm
Oct
18°
23/13
70mm
Nov
11°
16/6
70mm
Dec
5°
10/0
75mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Typical monthly temperatures in United Kingdom

Jan
7°
12/2
85mm
Feb
7°
12/2
65mm
Mar
10°
15/5
70mm
Apr
13°
18/8
60mm
May
16°
21/11
65mm
Jun
19°
24/14
65mm
Jul
21°
26/16
60mm
Aug
21°
26/16
75mm
Sep
18°
23/13
75mm
Oct
14°
19/9
90mm
Nov
10°
15/5
90mm
Dec
8°
13/3
95mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Travel advisories

United States: Normal precautions (UK FCDO) ↗United Kingdom: Exercise Increased Caution (US State Dept) ↗

Common questions

How far is Dulles from London?

Dulles (IAD) and London (LHR) are around 5,902 km (3,667 miles) apart — an estimated 7h 53m by air. Distances and flight times are great-circle estimates.

Which airlines have operated the IAD–LHR route?

Airlines recorded operating this route in the OpenFlights network include British Airways, United Airlines, Virgin Atlantic. This reflects historical scheduled service and may be out of date.

What is the time difference between Dulles and London?

Time difference ~ 5 hours (varies with daylight-saving).

When is it warmest in United Kingdom?

Across United Kingdom, the warmest month on average is July, with mean temperatures around 21°C. These are country-level monthly climate normals, not airport-specific.

Are there travel advisories for United States and United Kingdom?

The UK FCDO currently rates United States as Normal precautions; The US State Department rates United Kingdom as Exercise Increased Caution. Check the official sources before you travel.

Distances and flight times are great-circle estimates, not booked block times.