Also, if you're not already doing this, you should be booking the flights as one-ways instead of doing round-trips. Usually is doesn't matter but there could be an occasion where having a round-trip screws you over.

For example:

If you have a flight A-B and then B-A, if you do it as a round trip, and the A-B portion decreased in price but the B-A portion increased in price, you couldn't make any modifications to the total itinerary without the change affecting both portions (so your B-A would go up in price also).

If you book A-B and B-A separately, in that scenario above you could rebook A-B for the new lower price, while not having to make any changes to the B-A portion. Hopefully that makes sense.