Melbourne to London ping and RTT: 250.7 ms, 3.33 ms jitter, 165.48 ms fiber floor, and 66% efficiency across AS203314. Updated 2026-08-09.

🇦🇺 This page compares the published ping and round-trip time (RTT) from Melbourne (MEL) to 🇬🇧 London (LON) with vacuum and optical-fiber physical limits.

As of August 9, 2026, the Melbourne → London route on Hats Network averages 250.7 ms RTT across a 50-sample daily ICMP echo measurement round (source: GSL), 1.51× the theoretical fiber-floor limit of 165.48 ms.

Among the 19 measured routes departing Melbourne, this route ranks 15th fastest by average RTT.

With a stdev-to-average ratio of 1.9%, this route is more stable than the network median of 3.4%. Across the round, per-probe RTT ranged from 244.79 ms to 261.6 ms with a standard deviation of 4.72 ms.

Latency Summary

Metric	Value
RTT	250.7 ms
Jitter	3.33 ms
Packet Loss	0%
Standard Fiber Floor	165.48 ms
Fiber Efficiency	66%
Latency Tier	High
Source Region	Asia Pacific
Destination Region	Europe

Ping Measurement Series

The chart below renders the 50-sample ICMP echo measurement round for this route; an accessible table of every sample is included with the chart.

Ping series: MEL → LON

50 ICMP echo samples at 100 ms intervals · round 2026-08-09 · avg 250.7 ± 0.67 ms (SE)

Sample distribution: box = interquartile range (246.9–254.2 ms), median 249.4 ms · whiskers = min–max · diamond = round average · each dot is one measured sample.

How to read this chart

The shaded band spans the measured minimum to maximum RTT of all samples collected up to that point, and the thin line traces the running average. The final position therefore matches the round statistics exactly — the band only widens when a new extreme sample arrives.

The dashed line is the round average, and the shaded band at the bottom is the theoretical fiber-optic floor (165.5 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	258.96
2	100	250.46
3	200	247.69
4	300	245.91
5	400	246.90
6	500	254.47
7	600	259.30
8	700	251.87
9	800	249.48
10	900	250.26
11	1000	256.45
12	1100	259.60
13	1200	258.70
14	1300	259.14
15	1400	249.80
16	1500	246.54
17	1600	246.12
18	1700	245.42
19	1800	247.87
20	1900	246.47
21	2000	245.16
22	2100	246.13
23	2200	248.46
24	2300	245.82
25	2400	244.79
26	2500	245.50
27	2600	254.44
28	2700	261.60
29	2800	254.69
30	2900	248.82
31	3000	247.92
32	3100	248.65
33	3200	246.09
34	3300	245.12
35	3400	258.33
36	3500	258.24
37	3600	250.51
38	3700	249.55
39	3800	249.42
40	3900	252.05
41	4000	246.99
42	4100	249.05
43	4200	248.55
44	4300	248.13
45	4400	249.76
46	4500	251.31
47	4600	249.64
48	4700	257.40
49	4800	253.41
50	4900	248.06

Download This Route's Data

This route's measurement round is published as open data (CC BY 4.0) in CSV, JSON, and YAML. See About This Measurement for citation guidance.

Download this dataset

Per-route ICMP ping series, released under CC BY 4.0. Uncompressed plain text — no decompression step needed.

CSV JSON YAML Full dataset

Theoretical Fiber Latency

The public physical reference uses the GeoNames city centres for Melbourne (-37.81400, 144.96332) and London (51.50853, -0.12574). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	16,898.4 km
Vacuum RTT floor	112.73 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	165.48 ms
Low-latency fiber material floor	164.82 ms
Engineering floor (5% path allowance)	173.78 ms
Research 1.33× mapped-fiber reference	220.09 ms
Estimated unamplified path loss	3548.7 dB
Transparent optical spans / inline amplifiers	222 / 221
Published RTT inflation over fiber floor	1.51×

Attenuation is used to estimate the number of 80 km optical spans; it does not directly slow light. See the full theoretical fiber latency, GeoNames, attenuation, and amplifier methodology.

Stability & Trend

The current measurement round (2026-08-09) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	244.79 ms
Average RTT	250.7 ms
Maximum RTT	261.6 ms
Standard deviation	4.72 ms
Stdev / average	1.9%

RTT trend

Estimated route stability across the selected time window.

Average: 250.6 ms
Minimum: 248.6 ms
Maximum: 252.7 ms
Average loss: 0.02%

Route Context

Departure PoP: Melbourne (MEL)
Destination PoP: London (LON)
Region overview: Asia Pacific → Europe
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

London to Melbourne latency and RTT — 252.6 ms

Fastest routes departing Melbourne (MEL)

Melbourne to Sydney latency and RTT — 9.8 ms
Melbourne to Singapore latency and RTT — 88.6 ms
Melbourne to Tokyo latency and RTT — 111.3 ms
Melbourne to Hong Kong latency and RTT — 126.1 ms
Melbourne to Taipei latency and RTT — 141.3 ms

Fastest routes arriving at London (LON)

Amsterdam to London latency and RTT — 5.1 ms
Paris to London latency and RTT — 6.4 ms
Frankfurt to London latency and RTT — 13.2 ms
Berlin to London latency and RTT — 16.1 ms
Marseille to London latency and RTT — 19 ms

Same corridor (Asia Pacific → Europe)

Hong Kong to Moscow latency and RTT — 119.5 ms
Taipei to Moscow latency and RTT — 134.7 ms
Singapore to Marseille latency and RTT — 139.8 ms

About This Measurement

Published RTT reflects best-case backbone path behavior measured with ICMP echo probes between PoPs. End-user latency also depends on local access networks, congestion, routing policy, and traffic engineering. None of these values is an SLA.

The measurement round behind this page is published as open data under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/mel-lon.pings.{csv,json,yaml}. When citing, include the route, the measurement round date, and the dataset version — for example: "Hats Network latency dataset, Melbourne → London round 2026-08-09, CC BY 4.0".

Data auto-generated on August 9, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Melbourne to London Latency, Ping & RTT | AS203314