If you ever thought about getting the retroactive miles/points credit for any of your past trip, the first most important thing you need is the "boarding pass". Most of the time we do not care about keeping the boarding pass once we board the aircraft. But most often you could still get those miles for your air travel if you have your boarding pass. One of the best way is to take a "picture" of the boarding pass so that you still have proof of boarding the aircraft in case you need it at a later date. In fact sometimes the airlines miles/points might not post even though you might have entered your Frequent Flyer (FF) number. In such situations as well you might need to have the boarding pass from the trip to email/fax the customer support.
The other important aspect of air travel is to know what "fare bucket" your travel was booked into. For commoners all we know are the "classes" such as Economy, Business and First. But there are many fare buckets from which your ticket might originate and those determine how much "miles credit" you get for your trip. Fare bucket information is usually displayed on your itinerary right beside the the "class" information. This is important to know as it would "save you hassle" of contacting the airlines if you know before hand (by looking at airlines website) if your "fare bucket" earns any miles or not.
So, once you have above two pieces of information and provided the airline you flew allows retroactive miles credit (which most airlines do), you can earn the miles for the trip you took in the past. Ideally airlines have partners or belong to alliance so you could potentially credit your miles to those partners or alliance airline provided you enter that airline Frequent Flyer number in your reservation (This could be done online or by calling the airline you are flying). But, when you do not enter this info before taking your flight and would be doing retroactive credit majority of airlines will only allow you to credit the miles to their "own frequent flyer program".
Below is the information regarding the time frame you can get retroactive credit for your flights. Before you "contact the airlines", you would need to create the Frequent Flyer account in their program if you do not have one. I have listed only few airlines here, but you should be able to easily look up this information on the airlines website:
So the next time you travel, make sure you enter your Frequent Flyer number in your reservation record (can be done after booking your reservation) and always "keep your boarding pass" to ensure "airline mileage credit".
I love traveling / backpacking. This blog focuses on 3 aspects: