Has density altitude affected your flight plans recently? Do you plan for it when you create those summertime flight plans?
I ask because as I write this column Seattle is under a heat advisory. Temperatures are expected to reach into the 90s—for us that’s hot. We wear our Birkenstocks without socks. Lattes are served over ice. Even the salmon in the streams are sweating.

![Beat the Heat: Mastering Density Altitude Preparing for density altitude when you fly this summer means always crunching the numbers. [Credit: Shutterstock]](https://tbh.express/wp-content/uploads/2026/06/Beat-the-Heat-Mastering-Density-Altitude-768x509.jpg)