Yes, the Nuna EXEC is FAA approved when in harness mode for both forward-facing and rear-facing installation. This means it can safely be installed in an aircraft for air travel. Important to note: it cannot be used in an airplane in booster mode.
Bringing your child’s car seat on the airplane is always a great idea! Anyone whose ever flown with a toddler can tell you, it’s way easier! It’s also the safest way for them to travel, it’s familiar to them, and it gets your car seat to your destination safely.