I was sitting on a plane at the San Jose, CA airport waiting on the taxiway when the CME hit. I read that it was going to interfere with GPS, so figured we were going to land in Mexico City or Inner Mongolia instead of Spokane. But, nope, made it to Spokane just fine.
They just have to follow the interstates. Lol. When I fly from LA to SLC the plane flies right over I-15.