Not long ago, I was planning a trip to visit some friends in Colorado. I had some extra Delta miles, so I checked out the availability for a long weekend in October. Round-trip tickets cost 10,000 miles or $275 in cash.

American Airlines recently announced more changes to the way flyers will earn miles and elite status, and it’s getting more complicated than ever to figure out what a trip will yield when it comes to mileage rewards.

So you’re savvy enough to collect points and miles from airlines and hotels, but did you realize that you might be missing out on other perks by not signing up for some of these lesser known loyalty programs.

Despite the recent devaluation, AAdvantage still remains one of the most valuable frequent flyer programs in North America. There are many reasons for that, one of which is the sheer number of American partner airlines you can fly on using AAdvantage miles. Between the oneworld alliance and additional airline partnerships, American has 22 strategic partners that can take you to every corner of the world.

Singapore Airlines is a member of the Star Alliance, and a transfer partner of all four U.S.-based airline travel programs: Amex Membership Rewards, Chase Ultimate Rewards, Starwood Preferred Guest and Citi ThankYou. Singapore Airlines also has partners outside of the Star Alliance: Virgin Atlantic, Virgin America, Virgin Australia, JetBlue and Indian airline Vistara.

In the complex world of airline award travel, there is some terminology that needs a bit of explaining. If you understand the terms it will make your travel planning much easier. So let’s talk about how it all works and decipher the jargon along the way.

In October 2014 Air Canada announced a set of changes to their Altitude elite program. As a reminder, Altitude is separate from Aeroplan, which is the general Air Canada frequent flyer program.

Just like its U.S. peers, Air Canada tightened the screws by adding the revenue component to the list of the Elite Status requirements. The new requirements don’t go into effect until 2017.

Flying Blue is the frequent flyer program of Air France and KLM, though it’s not limited to these two airlines. The Flying Blue program has also been adopted by Air Europa, Kenya Airways, Aircalin, HOP!, Twin Jet, and TAROM. In addition, the Flying Blue elite members enjoy elite privileges of the SkyTeam Alliance.

Have you wished you could earn elite status on United faster? Well, if you have it appears that United has been listening because they have upped the ante for their frequent flyer program double the PQM’s for premium seats.

American Airlines drastically changed AAdvantage in 2015, with revisions that would come up in stages. AAdvantage made a transition to a partially revenue-based earning scheme, but unlike Delta, American Airlines was introducing the changes gradually. This days, the carrier continues making updates to its loyalty program.

Garuda Indonesia isn’t well-known in the United States. It doesn’t serve any cities in America, and it has a relatively small footprint, with only 21 international destinations in 14 countries. But this luxurious airline is worth getting to know, particularly if you’re traveling to Indonesia. Its frequent flyer program, GarudaMiles, offers excellent redemption rates on domestic flights within the country.

Who Is the Virgin Atlantic Black Card Good For?

The Virgin Atlantic Black Card is a great source of miles for anyone who flies on Virgin Atlantic. While Virgin Atlantic’s White Card has a lower annual fee, the Black Card has more benefits.

There are a few promos offering big bonuses in the six-digit range this summer. Here’s an overview of how to get those massive miles, and some ideas for spending your earnings. What would you do with that many miles?

Thanks to partnerships between airlines and charities, you have the opportunity to reap reward miles for your generosity. Call it aviation altruism, if you will.

Spring break has come and gone, but that doesn’t mean there aren’t opportunities to be rewarded for travel to sunny southern destinations. If you’re ready for a relaxing beach vacation, or looking for an excuse to explore the cities of South America, you can earn major bonus miles.

Who Is the Frontier Airlines World MasterCard From Barclays Good For?

The Frontier Airlines World MasterCard is the perfect way to earn more miles and enhance your flying and booking experience on the Denver-based carrier. Frontier’s loyalty program, EarlyReturns, offers some good deals, and the card comes with some essential benefits for cardholders. So if you’re a member of the program, or thinking of becoming one, having the co-branded MasterCard is a no-brainer.

United and American Airlines have partnered with Reliant Energy to offer up to 27,000 bonus miles. You’ll get 15,000 miles for making Reliant your energy provider, then 500 miles each month over the next 2 years.

Asiana Airlines is Korea’s second largest carrier after Korea Air. Asiana Club, the airline’s loyalty program, offers members exceptional deals on certain routes, including flights between the U.S. and Korea, Europe, and parts of South America. The program also has some unique perks, like its generous family mile sharing and pooling program and the ability to pay for excess baggage with miles.

Asiana’s program isn’t the most flexible, though. It doesn’t offer miles plus cash awards or free stopovers. You can book complex itineraries, but you have to call and you’ll probably have to pay extra. Fuel surcharges, however reasonable, are also levied on all Asiana flights and most partner airlines.