Head to head

Ariane 64 vs H-IIA

Two vehicles in the same payload class. Every figure below comes from the same two sources for both rockets, and a row appears only when both publish the input.

Payload to low Earth orbit

Relative

Ariane 64: 21,900 kg

H-IIA: 10,000 kg

Side by side

7 comparable figures

The highlighted value wins the row. Rows where neither direction is better, like length or stage count, highlight nothing.

Metric	Ariane 64	H-IIA
Flights flown	3	50
Success rate	100%	98%
Payload to LEO (kg)	21,900	10,000
Payload to GTO (kg)	11,700	4,100
Length (m)	63	53
Diameter (m)	5.4	4
Stages	2	2

Ariane 64

Flight record

100% success rate3 of 3 flown

Maiden flight 2026-06-17. Still flying.

H-IIA

Flight record

98% success rate49 of 50 flown · 1 failed

2001peak 2017 · 6 flights2025

Maiden flight 2001-08-29. Retired.

Ariane 64 is built by ArianeGroup of France (company profile on Space Index).H-IIA is built by Mitsubishi Heavy Industries of Japan (company profile on Space Index).

Full specifications and the complete launch history for each: Ariane 64 · H-IIA.

Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.