Top 3 Most Reliable Orbital Launch Vehicles

Launch vehicle reliability is critical for mission success, with several rockets demonstrating exceptional performance over many flights.

The top 3

Falcon 9 Block 5: Highest Active Success Rate: SpaceX's Falcon 9 Block 5 boasts a 99.84% mission success rate, with 618 successful launches out of 619 attempts as of August 8, 2026, making it one of the most reliable active rockets.
Ariane 5: Longest Consecutive Success Streak: The European Ariane 5 heavy-lift launch vehicle achieved an impressive streak of 82 consecutive successful launches between April 2003 and December 2017.
Atlas V: Consistent High Reliability: United Launch Alliance's Atlas V rocket has a historical success rate exceeding 98% over more than 90 launches as of 2025, and its operator, ULA, maintained a 100% mission success rate for its first 100 launches.