Pick up to 4 launch vehicles to compare side-by-side. State lives in the URL — share the link and the comparison loads exactly as you left it.
The global launch market reached $14.1 billion in 2024 — up 34% since 2021.
| Attribute | |||
|---|---|---|---|
| Company | JAXA / Mitsubishi Heavy Industries | ULA | Firefly Aerospace |
| Country | 🇯🇵 Japan | 🇺🇸 USA | 🇺🇸 USA |
| Status | Active | Retired | Active |
| Vehicle class | Heavy | Medium | Small |
| Propellant | LH₂ / LOX (LE-9 first stage + LE-5B-3 second stage) | RP-1 / LOX (RD-180); LH₂ / LOX (Centaur III) | RP-1 / LOX |
| Reusable | No | No | No |
| Stages | 2 | 2 | 2 |
| First flight | 2024 | 2002 – 2024 | 2021 |
| Payload to LEO | 16,500 kgas of [1]H3-24 (2 SRB-3 + 4 LE-9 engines) configuration. H3-30 baseline: 16,500 kg. | 18,850 kgas of [1]401 configuration. Maximum 401/551 stretch to 20,520 kg. 551 max 29,420 kg (5-solid boosters). ↑ Best | 1,030 kgas of [1]SSO capacity ~630 kg |
| Payload to GTO | 6,500 kgas of [1] | 8,900 kgas of [1]551 configuration (maximum performance) ↑ Best | — |
| Height | 57 mas of [1] | 58.3 mas of [1]401 configuration ↑ Best | 29 mas of [1] |
| Liftoff mass | 574 tas of [1]H3-24S configuration ↑ Best | 334 tas of [1]401 configuration without strap-ons | 54 tas of [1] |
| Success rate | 75%as of [2]~6/8 successes. TF1 (Feb 2023) first flight failure (LE-9 ignition issue, DAICHI-3 lost). F8 (Dec 23, 2025) QZS-5 lost to 2nd-stage relight anomaly. | 100%as of [2]99/99 mission successes from Aug 2002 through Apr 2024 (final Kuiper flight). Only launch vehicle with 100% success across 99 missions. ↑ Best | 43%as of [2]3/7 full successes (FLTA003 Jul 2023, FLTA005 Dec 2024, FLTA007 Mar 2026) + 2 partial successes + 2 failures through FLTA007 |
| Total flights | 8as of [2] | 99as of [2]Retired after KA-01 (Amazon Kuiper satellite testbed, Apr 9, 2024) ↑ Best | 7as of [2] |
| Cost / kg LEO | ~$5,500/kgas of [1]Target unit price ¥5B (~$35M at ¥145/$); roughly half H-IIA's per-launch cost ↓ Cheapest | — | ~$14,500/kgas of [1]Based on ~$15M list price / 1,030 kg LEO |
| Summary | Japan's next-generation flagship rocket designed to halve H-IIA costs. Uses three LE-9 engines burning liquid hydrogen — the highest-performing expander-cycle engines in the world. First successful flight was TF2 (Feb 17, 2024). HTV-X1 cargo mission to ISS (Oct 2025) demonstrated operational readiness. | ULA's workhorse from 2002–2024. Launched Mars Science Laboratory (Curiosity), OSIRIS-REx, Solar Orbiter, Lucy, New Horizons, and the Boeing Starliner. Its Russian RD-180 first-stage engine became a political liability after 2022; last flight was the Amazon Kuiper testbed on Apr 9, 2024. | Firefly Aerospace's two-stage small-lift rocket powered by four Reaver engines at sea level and one Lightning engine in vacuum. Also provides launch services for NASA's CLPS programme (Blue Ghost lander launched on Falcon 9). FLTA007 'Stairway to Seven' succeeded Mar 11, 2026. |
28 launch vehicles across 10 countries — active, retired, and in development — with primary-source citations from manufacturer user guides and agency press kits. Pure URL state: bookmark or share the link and the comparison reproduces exactly.