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Flights between Tehran (IKA) and London (LHR)

Imam Khomeini International Airport, Iran ↔ London Heathrow Airport, United Kingdom

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

This reflects historical scheduled service and may be out of date — it is not a live timetable.

Airlines that have operated this route include:

IR
Distance
4,423 km
2,748 miles
Est. flight time
6h 2m
great-circle estimate
Time difference
~3.5h
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in Iran

Jan
2°
7/-3
40mm
Feb
4°
9/-1
35mm
Mar
9°
15/3
50mm
Apr
15°
21/8
35mm
May
20°
27/13
15mm
Jun
26°
33/18
3mm
Jul
29°
37/21
2mm
Aug
28°
36/20
2mm
Sep
23°
31/15
5mm
Oct
16°
23/8
15mm
Nov
9°
15/3
35mm
Dec
3°
8/-2
40mm

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

Iran: Advise against all travel (UK FCDO) ↗United Kingdom: Exercise Increased Caution (US State Dept) ↗

Common questions

How far is Tehran from London?

Tehran (IKA) and London (LHR) are around 4,423 km (2,748 miles) apart — an estimated 6h 2m by air. Distances and flight times are great-circle estimates.

Which airlines have operated the IKA–LHR route?

Airlines recorded operating this route in the OpenFlights network include IR. This reflects historical scheduled service and may be out of date.

What is the time difference between Tehran and London?

Time difference ~ 3.5 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 Iran and United Kingdom?

The UK FCDO currently rates Iran as Advise against all travel; 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.