ICMP round-trip time data from Los Angeles, USA to Melbourne, Australia: average 145 ms, packet loss 0%, stability metrics, and route ranking context.

🇺🇸 Los Angeles, USA (LAX) → 🇦🇺 Melbourne, Australia (MEL)

Measurement round: 2026-08-15T04:03:13Z.

In round 2026-08-15T04:03:13Z, 50 ICMP echo probes from Los Angeles to Melbourne averaged 145.4 ms round-trip, with a minimum of 140.77 ms and a maximum of 154.01 ms. The path saw no packet loss, and the 3.55 ms standard deviation kept jitter at 3.42 ms, a stable result across a 12,764 km oceanic span.

Ranked 14th of the 19 outbound routes in this network, Melbourne falls in the slower half, with five routes behind it. The route's variation is proportionally smaller than the network's median variation figure of 3.08%, so the consistency is better than the typical outbound path even though the latency itself is not near the top.

The measured average is 1.16x the fiber-only round-trip floor of 125 ms, which works out to 86% fiber efficiency. Only about 20 ms of real-world overhead separates this route from the best plausible fiber path, so the latency is dominated by distance rather than avoidable delay.

Latency Summary

Metric	Value
RTT	145.4 ms
Jitter	3.42 ms
Packet Loss	0%
Standard Fiber Floor	125 ms
Fiber Efficiency	86%
Latency Tier	Good
Source Region	North America
Destination Region	Asia Pacific

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: LAX → MEL

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 145.4 ± 0.50 ms (SE)

Sample distribution: box = interquartile range (142.5–147.8 ms), median 144.4 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 (125.0 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	141.73
2	100	142.51
3	200	141.96
4	300	143.50
5	400	148.54
6	500	152.21
7	600	146.79
8	700	142.70
9	800	142.54
10	900	144.10
11	1000	148.27
12	1100	146.25
13	1200	142.33
14	1300	141.31
15	1400	140.77
16	1500	140.80
17	1600	142.02
18	1700	143.23
19	1800	142.35
20	1900	147.51
21	2000	148.66
22	2100	148.27
23	2200	144.56
24	2300	154.01
25	2400	147.21
26	2500	143.82
27	2600	141.86
28	2700	141.84
29	2800	141.65
30	2900	148.36
31	3000	143.23
32	3100	150.27
33	3200	144.60
34	3300	152.27
35	3400	145.87
36	3500	151.67
37	3600	146.49
38	3700	142.66
39	3800	147.93
40	3900	152.97
41	4000	144.67
42	4100	145.67
43	4200	142.85
44	4300	143.18
45	4400	145.16
46	4500	144.18
47	4600	141.89
48	4700	144.30
49	4800	152.18
50	4900	146.30

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 Los Angeles (34.05223, -118.24368) and Melbourne (-37.81400, 144.96332). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	12,764 km
Vacuum RTT floor	85.15 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	125 ms
Low-latency fiber material floor	124.49 ms
Engineering floor (5% path allowance)	131.26 ms
Research 1.33× mapped-fiber reference	166.24 ms
Estimated unamplified path loss	2680.4 dB
Transparent optical spans / inline amplifiers	168 / 167
Published RTT inflation over fiber floor	1.16×

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 (2026-08-15T04:03:13Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	140.77 ms
Average RTT	145.4 ms
Maximum RTT	154.01 ms
Standard deviation	3.55 ms
Stdev / average	2.4%

RTT trend

Estimated route stability across the selected time window.

Average: 145.5 ms
Minimum: 143.9 ms
Maximum: 146.8 ms
Average loss: 0.04%

Route Context

Departure PoP: Los Angeles (LAX)
Destination PoP: Melbourne (MEL)
Region overview: North America → Asia Pacific
Corridor overview: North America to Asia Pacific
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Melbourne to Los Angeles latency and RTT — 147.7 ms

Fastest routes departing Los Angeles (LAX)

Los Angeles to Seattle latency and RTT — 27.5 ms
Los Angeles to Miami latency and RTT — 57.1 ms
Los Angeles to New York latency and RTT — 59 ms
Los Angeles to Ashburn latency and RTT — 59.9 ms
Los Angeles to Tokyo latency and RTT — 100.9 ms

Fastest routes arriving at Melbourne (MEL)

Sydney to Melbourne latency and RTT — 9.8 ms
Singapore to Melbourne latency and RTT — 87.8 ms
Tokyo to Melbourne latency and RTT — 111.3 ms
Hong Kong to Melbourne latency and RTT — 137.4 ms
Taipei to Melbourne latency and RTT — 143.6 ms

Same corridor (North America → Asia Pacific)

Seattle to Tokyo latency and RTT — 84.8 ms
Seattle to Taipei latency and RTT — 115.1 ms
Seattle to Hong Kong latency and RTT — 130.7 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/lax-mel.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Los Angeles → Melbourne round 2026-08-15T04:03:13Z, CC BY 4.0".

Data auto-generated on August 15, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Los Angeles, USA → Melbourne, Australia RTT