How to Compare Air Flights

Make a list of where you need to fly to. List alternate airports that you are willing to fly into as alternates. Repeat this step for your departing airport as well. Include airports that are within a reasonable distance from the airport you travel in and out of. For example, the Harrisburg International Airport in Middletown, Pa., is a small airport with fewer flights than the Baltimore or Philadelphia airports. Both are a 1 1/2-hour drive from the Middletown airport.

Gather a list of airlines that fly in and out of the airports you have selected. Write down the customer service phone numbers and websites for each airline. Visit the airlines' websites. Use the online interactive flight search tool to begin looking for flights. Keep your travel dates handy because you must enter exact dates to get flight pricing and schedules. Print out or write down all flight information relevant to your trip.

Write down the total travel length for each flight that is within your budget range; take notes about layover locations and times. Look at all flight options, including those at alternate airports on your list.

Narrow your flight choices to the top five that fit your budget and schedule. Review the luggage policies for the airlines to determine if luggage fees are assessed; if so, calculate that in to the flight's total price. Review policies about in-flight meal and beverage service to compare costs and complimentary features.

Review ticket cancellation or change policies for the remaining flights in case your plans change and you need to alter your travel plans. Review policy information because if you cancel a discount flight, you could end up with an airline credit that must be used within a certain time frame.

Book the flight that offers the best total price, services, amenities and overall convenience. Buy the ticket online to save service fees assessed on phone reservations. Print out your flight information; store it in a safe place reference and use. Continue to track pricing for the flight you purchased. Contact the airline to request a credit if the price goes down.