airline tickets upgrade with frequent flyer miles

Traveling in business class is not only about getting a seat which would be a couple of inches wider and reclines more degrees than in economy class. You may expect a fully reclining seat, cozy cushions and pillow, quality food and entertainment amenities on board.
you may use frequent flyer miles to upgrade tickets to Business Class on international flights,you can purchasing an upgrade at the gate or online check in.
Each airline has its own upgrade levels, starting at 5,000 earned miles on up.
One way you can assure yourself a confirmed seat in first class is to use your miles, either for a free seat, or to upgrade from coach tickets. Going for the free seat is the better use of your miles. --- Many airlines sell upgrade coupons, denominated in multiples of 500 miles, for domestic trips. You simply give the airlines as many as required for your trip. Generally, you must be at least one elite level up the scale. If not, you can only use this for the most expensive coach seats. --- Mileage upgrades are usually for one-way travel. Thus you can upgrade overnight outbound flight, then save miles on your return day flight. If you want to upgrade round trip, you need to use twice the number of miles.

--- Some airlines require you to book upgrade over the phone. Others on line.

--- Low-ranking frequent fliers for cheap tickets take their chances at the departure gate.

--- Some airlines allow you to search for flights eligible for mileage upgrades.

--- Super-elite passengers find upgrades easier than lower level passengers.
If you are a frequent flyer and you have credit card eligible miles, then you have more chances to upgrade to business class for virtually free. It is possible to buy ticket using only frequent flyer miles and many other options would also be available to the frequent travelers. The airlines would provide options to purchase a full fare economy class ticket and later upgrade it to the executive class by applying some frequent flyer miles. Thus you can get executive class sets at a reduced rate.

As you probably already know, you can rack up frequent flyer miles by using your credit card if it has a frequent flyer program and you use that credit card to shop, but you can also buy, sell, and in some cases trade miles.