Don’t book your next business trip without consulting our list of the best international airline loyalty programs.

By Travel + Leisure and Travel + Leisure Staff
February 02, 2017
Courtesy of Virgin Atlantic

When you fly as much as many business travelers do, airline miles add up. And that can mean some great perks for you.

Of course, airlines keep changing the rules on these programs—everything from how you accrue miles to how you’re allowed to spend them.

So which international airlines offer the best opportunities for frequent business travelers? That’s just one of the questions we posed in the 2014 Best in Business Travel Survey that we conducted with Fortune. We gave readers of both magazines the opportunity to voice how they feel about the state of business travel, across a variety of topics. Here’s how our readers ranked those ever-changing frequent-flier programs when flying on international carriers:

1.) Virgin Atlantic Airways
2.) Singapore Airlines
3.) Qantas Airways
4.) Korean Air
5.) Emirates
6.) Lufthansa
7.) Air New Zealand
8.) Turkish Airlines
9.) British Airways
10.) Cathay Pacific

Check out all the winners of the Best In Business survey.

See the full methodology.