In this brief note, I examine the distances traveled by flying and driving in the United States in March and April 2020—the first two months of the current pandemic—and compare them with the corresponding distances in March and April 2019. The raw data for the analysis came from the Bureau of Transportation Statistics (revenue passenger miles flown on all scheduled domestic flights) and the Federal Highway Administration (vehicle miles traveled). The results are shown in the table below. The main findings are as follows: The decrease in travel in both months was substantially greater for flying than for driving. The decrease in travel was substantially greater in April than in March; flying in April was down about 96% and driving was down about 40%. Two caveats are in order. First, the measure used in this analysis for driving—vehicle miles traveled—includes travel not only by personal vehicles (cars, light trucks, […]