Frequent flyers and airline crews face a higher risk of radiation exposure from the sun, particularly on flights at high altitudes, over the poles or during solar events. Radiation exposure can increase the risk of cancer and pregnancy complications. The Association of Flight Attendants (AFA) has highlighted that frequent travelers and flight crews could face radiation as a greater hazard. The risk is particularly low for travelers on domestic flights in the continental United States, as radiation exposure is more common closer to the poles. The average radiation dose experienced on a coast-to-coast flight in the U.S. is equivalent to the radiation received from one chest X-ray. Experts advise individuals to track their radiation exposure and use a radiation exposure calculator. The Federal Aviation Administration also offers a tool to calculate past flights.