Miami to Ashburn Latency, Ping & RTT | AS203314
Miami to Ashburn ping and RTT: 33.7 ms, 0.38 ms jitter, 14.62 ms fiber floor, and 43.4% efficiency across AS203314. Updated 2026-07-19.
🇺🇸 This page compares the published ping and round-trip time (RTT) from Miami (MIA) to 🇺🇸 Ashburn (IAD) with vacuum and optical-fiber physical limits.
Latency Summary
| Metric | Value |
|---|---|
| RTT | 33.7 ms |
| Jitter | 0.38 ms |
| Packet Loss | 0% |
| Standard Fiber Floor | 14.62 ms |
| Fiber Efficiency | 43.4% |
| Latency Tier | Excellent |
| Source Region | North America |
| Destination Region | North America |
Theoretical Fiber Latency
The public physical reference uses the GeoNames city centres for Miami (25.77427, -80.19366) and Ashburn (39.04372, -77.48749). It does not disclose either facility address.
| Physical Reference | Value |
|---|---|
| WGS-84 geodesic distance | 1,493.2 km |
| Vacuum RTT floor | 9.96 ms |
| Standard fiber RTT floor () | 14.62 ms |
| Low-latency fiber material floor | 14.56 ms |
| Engineering floor (5% path allowance) | 15.36 ms |
| Research 1.33× mapped-fiber reference | 19.45 ms |
| Estimated unamplified path loss | 313.6 dB |
| Transparent optical spans / inline amplifiers | 20 / 19 |
| Published RTT inflation over fiber floor | 2.3× |
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 | 33.2 ms |
| Median RTT (p50) | 33.7 ms |
| 95th percentile RTT (p95) | 34.3 ms |
| Maximum RTT | 34.5 ms |
| Jitter | 0.38 ms |
| Packet loss | 0% |
RTT trend
Estimated route stability across the selected time window.
- Average
- 33.7 ms
- Minimum
- 33.4 ms
- Maximum
- 34.0 ms
- Average loss
- 0.02%
Route Context
- Departure PoP: Miami (MIA)
- Destination PoP: Ashburn (IAD)
- Region overview: North America → North America
- Full global matrix: Backbone Latency Matrix
- Physical methodology: Theoretical Fiber Latency
Related City-Pair Routes
- Reverse direction: Ashburn to Miami latency and RTT — 33.5 ms
- Miami to New York latency and RTT — 40.6 ms
- Miami to Los Angeles latency and RTT — 57.6 ms
- Miami to Seattle latency and RTT — 82.1 ms
- Miami to London latency and RTT — 101.7 ms
- Miami to Paris latency and RTT — 107.6 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.