Vega-C | Sentinel-3C & FLEX

Sentinel-3C is the third satellite in the Sentinel-3 constellation, which provides high-accuracy optical, radar and altimetry data for marine and land services. The Fluorescence Explorer (FLEX) satellite is a part of ESA's Earth Explorer program. The satellite will map vegetation fluorescence to quantify photosynthetic activity.

This mission is flown by Avio S.p.A. It is classified as an earth science mission. Liftoff is planned from Ariane Launch Area 1 (ELV). Launch windows shift often; this page is rebuilt every day with the latest scheduled time.

Vega-C | Sentinel-3C & FLEX is scheduled to lift off on Friday, September 11, 2026. The countdown above updates live, so you always see exactly how many days, hours, and minutes are left.