Los Angeles to Sydney Latency, Ping & RTT | AS203314
Los Angeles to Sydney ping and RTT: 136.8 ms, 0.78 ms jitter, 118.13 ms fiber floor, and 86.4% efficiency across AS203314. Updated 2026-07-19.
🇺🇸 This page compares the published ping and round-trip time (RTT) from Los Angeles (LAX) to 🇦🇺 Sydney (SYD) with vacuum and optical-fiber physical limits.
Latency Summary
| Metric | Value |
|---|---|
| RTT | 136.8 ms |
| Jitter | 0.78 ms |
| Packet Loss | 0.05% |
| Standard Fiber Floor | 118.13 ms |
| Fiber Efficiency | 86.4% |
| Latency Tier | Good |
| Source Region | North America |
| Destination Region | Asia Pacific |
Theoretical Fiber Latency
The public physical reference uses the GeoNames city centres for Los Angeles (34.05223, -118.24368) and Sydney (-33.86785, 151.20732). It does not disclose either facility address.
| Physical Reference | Value |
|---|---|
| WGS-84 geodesic distance | 12,063.2 km |
| Vacuum RTT floor | 80.48 ms |
| Standard fiber RTT floor () | 118.13 ms |
| Low-latency fiber material floor | 117.66 ms |
| Engineering floor (5% path allowance) | 124.05 ms |
| Research 1.33× mapped-fiber reference | 157.12 ms |
| Estimated unamplified path loss | 2533.3 dB |
| Transparent optical spans / inline amplifiers | 159 / 158 |
| 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 following estimated indicators summarize route stability for the current publication period and are intended for comparative planning rather than SLA evaluation.
| Stability Indicator | Value |
|---|---|
| Minimum RTT | 136 ms |
| Median RTT (p50) | 136.7 ms |
| 95th percentile RTT (p95) | 138.1 ms |
| Maximum RTT | 138.4 ms |
| Jitter | 0.78 ms |
| Packet loss | 0.05% |
RTT trend
Estimated route stability across the selected time window.
- Average
- 136.5 ms
- Minimum
- 135.4 ms
- Maximum
- 137.9 ms
- Average loss
- 0.02%
Route Context
- Departure PoP: Los Angeles (LAX)
- Destination PoP: Sydney (SYD)
- Region overview: North America → Asia Pacific
- Full global matrix: Backbone Latency Matrix
- Physical methodology: Theoretical Fiber Latency
Related City-Pair Routes
- Reverse direction: Sydney to Los Angeles latency and RTT — 138.5 ms
- Los Angeles to Seattle latency and RTT — 25.9 ms
- Los Angeles to Miami latency and RTT — 57.1 ms
- Los Angeles to New York latency and RTT — 58.5 ms
- Los Angeles to Ashburn latency and RTT — 59.7 ms
- Los Angeles to Tokyo latency and RTT — 100.7 ms
About This Measurement
Published RTT reflects best-case backbone path behavior. End-user latency also depends on local access networks, congestion, routing policy, and traffic engineering. Stability indicators are comparative estimates, and none of these values is an SLA.
Data auto-generated on July 19, 2026. Explore the full interactive latency matrix or browse more city-pair routes.