You are thinking of the 777 ER, which holds more kerosene than the first stage of Falcon 9 (and slightly less fuel than both stages combined) The 737 is a much

You are thinking of the 777 ER, which holds more kerosene than the first stage of Falcon 9 (and slightly less fuel than both stages combined) The 737 is a much smaller plane, and its fuel capacity is near the ballpark of 10x smaller.