Seattle, USA to Frankfurt, Germany: ICMP round-trip time measurements with packet loss, jitter, and route efficiency data from the latest test round.

🇺🇸 Seattle, USA (SEA) → 🇩🇪 Frankfurt, Germany (FRA)

Measurement round: 2026-08-16T04:07:28Z.

The Seattle-to-Frankfurt measurement round from 2026-08-16T04:07:28Z produced an average ICMP echo RTT of 133.2 ms, a minimum of 130.2 ms, and a maximum of 141.75 ms over 50 samples. No packets were lost, and the route was classified as 'Good' latency.

The path spans about 8,204 km along the geodesic, against a fiber-floor estimate of roughly 80.3 ms. The measured delay sits at 1.66 times that floor, which works out to 60.3% fiber efficiency; the moderate inflation is consistent with a long-haul North America-to-Europe path rather than a sign of severe detouring.

Among the 19 outbound routes measured from Seattle, this one ranked 11th in average round-trip time. Its own relative variation is about 2.0% of the average, markedly tighter than the 3.28% median for the route set, and the 2.46 ms jitter confirms that Frankfurt-bound traffic stayed on a very stable path.

Latency Summary

Metric	Value
RTT	133.2 ms
Jitter	2.46 ms
Packet Loss	0%
Standard Fiber Floor	80.34 ms
Fiber Efficiency	60.3%
Latency Tier	Good
Source Region	North America
Destination Region	Europe

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: SEA → FRA

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 133.2 ± 0.38 ms (SE)

Sample distribution: box = interquartile range (131.6–133.9 ms), median 132.4 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 (80.3 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	131.20
2	100	131.69
3	200	130.30
4	300	135.34
5	400	132.19
6	500	130.47
7	600	131.34
8	700	130.20
9	800	132.77
10	900	141.26
11	1000	134.02
12	1100	131.11
13	1200	130.78
14	1300	131.00
15	1400	130.59
16	1500	131.38
17	1600	132.95
18	1700	134.38
19	1800	132.79
20	1900	135.19
21	2000	132.59
22	2100	132.26
23	2200	132.09
24	2300	140.93
25	2400	134.69
26	2500	131.58
27	2600	130.22
28	2700	132.71
29	2800	132.13
30	2900	136.72
31	3000	133.30
32	3100	134.60
33	3200	132.45
34	3300	132.30
35	3400	130.65
36	3500	133.31
37	3600	132.10
38	3700	137.10
39	3800	132.94
40	3900	132.16
41	4000	141.75
42	4100	138.77
43	4200	133.66
44	4300	132.51
45	4400	131.97
46	4500	131.76
47	4600	132.05
48	4700	131.70
49	4800	132.68
50	4900	135.37

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 Seattle (47.60621, -122.33207) and Frankfurt am Main (50.11552, 8.68417). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	8,204 km
Vacuum RTT floor	54.73 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	80.34 ms
Low-latency fiber material floor	80.02 ms
Engineering floor (5% path allowance)	84.37 ms
Research 1.33× mapped-fiber reference	106.85 ms
Estimated unamplified path loss	1722.8 dB
Transparent optical spans / inline amplifiers	108 / 107
Published RTT inflation over fiber floor	1.66×

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 (2026-08-16T04:07:28Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	130.2 ms
Average RTT	133.2 ms
Maximum RTT	141.75 ms
Standard deviation	2.72 ms
Stdev / average	2.0%

RTT trend

Estimated route stability across the selected time window.

Average: 133.1 ms
Minimum: 131.9 ms
Maximum: 134.4 ms
Average loss: 0.03%

Route Context

Departure PoP: Seattle (SEA)
Destination PoP: Frankfurt (FRA)
Region overview: North America → Europe
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Frankfurt to Seattle latency and RTT — 135.2 ms

Fastest routes departing Seattle (SEA)

Seattle to Los Angeles latency and RTT — 25.9 ms
Seattle to New York latency and RTT — 59.5 ms
Seattle to Ashburn latency and RTT — 61.5 ms
Seattle to Miami latency and RTT — 81.7 ms
Seattle to Tokyo latency and RTT — 85 ms

Fastest routes arriving at Frankfurt (FRA)

Amsterdam to Frankfurt latency and RTT — 5.9 ms
Berlin to Frankfurt latency and RTT — 6.1 ms
Paris to Frankfurt latency and RTT — 7.6 ms
London to Frankfurt latency and RTT — 13.6 ms
Marseille to Frankfurt latency and RTT — 16 ms

Same corridor (North America → Europe)

New York to London latency and RTT — 63.5 ms
New York to Amsterdam latency and RTT — 68.7 ms
New York to Paris latency and RTT — 68.9 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/sea-fra.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Seattle → Frankfurt round 2026-08-16T04:07:28Z, CC BY 4.0".

Data auto-generated on August 16, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Seattle, USA → Frankfurt, Germany RTT