Systems and methods for seamless switching of data radios are provided herein. In one example, a communications system includes first and second data radios communicatively coupled to first and second antennas at first and second positions on a vehicle, respectively. The first and second data radios are tuned to the same frequency for data communications. The communications system includes at least one processor communicatively coupled to a memory, the first data radio, and the second data radio. The at least one processor is configured to: monitor one or more parameters for the first and second data radios; determine whether the first data radio or the second data radio has better current performance based on a comparison of the one or more parameters for the first and second data radios; and switch from the first data radio to the second data radio for primary data communications based on the determination.