Measured ICMP round-trip time from Los Angeles, USA to Tokyo, Japan: average latency, packet loss, jitter, and stability for this route.

🇺🇸 Los Angeles, USA (LAX) → 🇯🇵 Tokyo, Japan (TYO)

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

At 2026-08-15T04:03:13Z, 50 ICMP echo probes from Los Angeles, USA to Tokyo, Japan averaged 100.9ms, with a minimum of 96.48ms and a maximum of 116.67ms. All probes returned successfully, and jitter was just under 3ms.

The average RTT is only about 17% above the 86.51ms fiber floor for an 8,834.5km great-circle distance, indicating the route captures roughly 85.7% of the ideal fiber path's efficiency. The 20ms gap between minimum and maximum is modest for a trans-Pacific crossing.

This route ranks 5th among the network's 19 outbound routes. The route's standard deviation is about 3.5% of the average, just above the network-wide median variability of 3.08%; with zero packet loss, the added variation is small and mostly visible in the upper tail near 116.67ms.

Latency Summary

Metric	Value
RTT	100.9 ms
Jitter	2.98 ms
Packet Loss	0%
Standard Fiber Floor	86.51 ms
Fiber Efficiency	85.7%
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 → TYO

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 100.9 ± 0.50 ms (SE)

Sample distribution: box = interquartile range (98.7–102.1 ms), median 100.4 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 (86.5 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	103.08
2	100	102.33
3	200	108.44
4	300	100.64
5	400	99.91
6	500	105.96
7	600	100.86
8	700	99.10
9	800	101.79
10	900	102.05
11	1000	98.42
12	1100	101.04
13	1200	98.05
14	1300	97.01
15	1400	97.30
16	1500	102.58
17	1600	100.01
18	1700	98.16
19	1800	99.74
20	1900	101.02
21	2000	98.97
22	2100	97.22
23	2200	102.66
24	2300	100.38
25	2400	101.36
26	2500	101.91
27	2600	98.22
28	2700	101.21
29	2800	100.35
30	2900	100.08
31	3000	102.15
32	3100	98.69
33	3200	97.46
34	3300	116.67
35	3400	103.41
36	3500	103.71
37	3600	105.76
38	3700	108.38
39	3800	100.50
40	3900	103.50
41	4000	98.86
42	4100	99.30
43	4200	99.34
44	4300	100.93
45	4400	97.78
46	4500	96.63
47	4600	96.48
48	4700	96.51
49	4800	100.10
50	4900	98.99

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 Tokyo (35.68950, 139.69171). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	8,834.5 km
Vacuum RTT floor	58.94 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	86.51 ms
Low-latency fiber material floor	86.17 ms
Engineering floor (5% path allowance)	90.85 ms
Research 1.33× mapped-fiber reference	115.06 ms
Estimated unamplified path loss	1855.3 dB
Transparent optical spans / inline amplifiers	116 / 115
Published RTT inflation over fiber floor	1.17×

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	96.48 ms
Average RTT	100.9 ms
Maximum RTT	116.67 ms
Standard deviation	3.55 ms
Stdev / average	3.5%

RTT trend

Estimated route stability across the selected time window.

Average: 101.0 ms
Minimum: 100.1 ms
Maximum: 101.9 ms
Average loss: 0.04%

Route Context

Departure PoP: Los Angeles (LAX)
Destination PoP: Tokyo (TYO)
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

Tokyo to Los Angeles latency and RTT — 101.5 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 London latency and RTT — 129.8 ms

Fastest routes arriving at Tokyo (TYO)

Taipei to Tokyo latency and RTT — 31.6 ms
Hong Kong to Tokyo latency and RTT — 45 ms
Singapore to Tokyo latency and RTT — 69.6 ms
Seattle to Tokyo latency and RTT — 84.8 ms
Sydney to Tokyo latency and RTT — 101.6 ms

Same corridor (North America → Asia Pacific)

Seattle to Taipei latency and RTT — 115.1 ms
Seattle to Hong Kong latency and RTT — 130.7 ms
Los Angeles to Taipei latency and RTT — 131.5 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-tyo.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 → Tokyo 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 → Tokyo, Japan RTT