Sydney to Miami Latency, Ping & RTT | AS203314
Sydney to Miami ping and RTT: 192.4 ms, 1.06 ms jitter, 147.18 ms fiber floor, and 76.5% efficiency across AS203314. Updated 2026-07-19.
🇦🇺 This page compares the published ping and round-trip time (RTT) from Sydney (SYD) to 🇺🇸 Miami (MIA) with vacuum and optical-fiber physical limits.
Latency Summary
| Metric | Value |
|---|---|
| RTT | 192.4 ms |
| Jitter | 1.06 ms |
| Packet Loss | 0.19% |
| Standard Fiber Floor | 147.18 ms |
| Fiber Efficiency | 76.5% |
| Latency Tier | Fair |
| Source Region | Asia Pacific |
| Destination Region | North America |
Theoretical Fiber Latency
The public physical reference uses the GeoNames city centres for Sydney (-33.86785, 151.20732) and Miami (25.77427, -80.19366). It does not disclose either facility address.
| Physical Reference | Value |
|---|---|
| WGS-84 geodesic distance | 15,029.6 km |
| Vacuum RTT floor | 100.27 ms |
| Standard fiber RTT floor () | 147.18 ms |
| Low-latency fiber material floor | 146.59 ms |
| Engineering floor (5% path allowance) | 154.56 ms |
| Research 1.33× mapped-fiber reference | 195.75 ms |
| Estimated unamplified path loss | 3156.2 dB |
| Transparent optical spans / inline amplifiers | 198 / 197 |
| Published RTT inflation over fiber floor | 1.31× |
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 | 191 ms |
| Median RTT (p50) | 192.3 ms |
| 95th percentile RTT (p95) | 194 ms |
| Maximum RTT | 194.7 ms |
| Jitter | 1.06 ms |
| Packet loss | 0.19% |
RTT trend
Estimated route stability across the selected time window.
- Average
- 192.5 ms
- Minimum
- 190.6 ms
- Maximum
- 194.3 ms
- Average loss
- 0.01%
Route Context
- Departure PoP: Sydney (SYD)
- Destination PoP: Miami (MIA)
- Region overview: Asia Pacific → North America
- Full global matrix: Backbone Latency Matrix
- Physical methodology: Theoretical Fiber Latency
Related City-Pair Routes
- Reverse direction: Miami to Sydney latency and RTT — 193.2 ms
- Sydney to Melbourne latency and RTT — 9.8 ms
- Sydney to Singapore latency and RTT — 94.7 ms
- Sydney to Tokyo latency and RTT — 101.8 ms
- Sydney to Hong Kong latency and RTT — 124.7 ms
- Sydney to Taipei latency and RTT — 133.7 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.