Head to head

H-IIA vs Long March 3B

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

H-IIA: 10,000 kg

Long March 3B: 11,500 kg

Side by side

11 comparable figures

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

Metric	H-IIA	Long March 3B
Flights flown	50	24
Success rate	98%	87.5%
Payload to LEO (kg)	10,000	11,500
Payload to GTO (kg)	4,100	5,100
Launch cost	$90M	$70M
Cost per kg to LEO	$9,000	$6,087
Liftoff thrust (kN)	2,260	5,923
Length (m)	53	54.8
Diameter (m)	4	3.35
Launch mass (t)	285	426
Stages	2	3

H-IIA

Flight record

98% success rate49 of 50 flown · 1 failed

2001peak 2017 · 6 flights2025

Maiden flight 2001-08-29. Retired.

Long March 3B

Flight record

87.5% success rate21 of 24 flown · 3 failed

1996peak 2020 · 4 flights2023

Maiden flight 1996-02-14. Still flying.

H-IIA is built by Mitsubishi Heavy Industries of Japan (company profile on Space Index).Long March 3B is built by China Aerospace Science and Technology Corporation of China.

Full specifications and the complete launch history for each: H-IIA · Long March 3B.

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