Yesterday, I tried a scheduled flight in the E175 from Billings, ID to Dallas, TX. Envoy flies the same route in their 175 in RL. According to simbrief, the flight was only supposed to burn 15.4k lbs fuel en route with an additional 4.4k, IIRC, in alternate and 45 min reserve.
My question came about when I was 1:15 out and I had only 28 minutes of fuel left. I was way off from the estimated fuel values on the flight release navlog, despite the fact that my flight profile aligned with the release profile, FL290, M078, and TOGW matched up. Any clue what the issue might have been?