Yes, you can safely go through modern airport security scanners while pregnant. In 2026, the primary technology used in most international airports is the millimeter-wave scanner (the "booth" where you raise your arms). This technology uses non-ionizing radiofrequency waves, which are similar to the signals used by cell phones or Wi-Fi; they do not use X-rays and do not penetrate the skin, posing no risk to the fetus. Traditional walk-through metal detectors are also safe, as they utilize low-frequency electromagnetic fields that do not involve ionizing radiation. Even the older "backscatter" X-ray machines (which have been largely phased out in many countries) used such a negligible dose of radiation that it was considered safe by most medical associations. However, if you feel uncomfortable or have a high-risk pregnancy, you always have the legal right to request a manual pat-down instead of passing through any machine. TSA and other security agencies are trained to accommodate such requests respectfully. Most doctors recommend that pregnant travelers focus more on staying hydrated and moving their legs during the flight to prevent blood clots rather than worrying about the brief exposure at the security checkpoint.