Browse to the Travel Math website (see Resources).
Locate the box titled "Travel Calculator" displayed on the upper-right side of the page. Type the city you are flying from in the text field displayed beside where it says "From," then type the name of the city where you will be arriving beside where it says "To."
Click the "Calculate" tab. The air distance is displayed in miles and kilometers.
Visit the Web Flyer site (see Resources).
Enter the name of the city you are departing from in the text field displayed next to where it says "Departing from," then enter the city where you are flying to in the field located beside where it reads "Then flying to."
Click the "How Far?" tab. Thereafter you will be prompted to select an airport located in the city you are departing from. Select the airport you prefer and click "Submit." Select your preferred airport located in the city where you will be arriving, then click "Submit." The air distance between both cities will be displayed in miles and kilometers. You will be able to see the one-way air distance and the round-trip air distance between the cities you entered.
Navigate to the Airtimetable website (see Resources).
Click on the drop-down menu displayed beneath where it says "Departure>City" and select the city where you are departing from. Click the drop-down menu located below where it says "Destination City," and select the city where you will be arriving.
Click the "Calculate" tab, and the air distance between both cities will be displayed in miles and kilometers. The results are displayed in the boxes located below where it says "Total air miles between cities" and "Distance in Kilometers below."
