What app is cheap to buy an international air ticket?

The cheapest way to buy air tickets may vary from person to person, and different travelers may have different needs and preferences. But in general, the easy-to-use, widely used and affordable air ticket booking software can help you save money.

Some popular air ticket booking software are:

1. Ctrip: the largest travel website in China, providing all kinds of travel products, including air tickets, hotels and car rentals.

2. Where to go: The largest air ticket booking website in China provides all kinds of flight information and prices.

3. Flying Pig: the largest tourism platform in China, providing all kinds of tourism products, including air tickets, hotels, car rentals, etc.

4.Expedia: the world's largest travel website, providing various travel products, including air tickets, hotels, car rentals, etc.

5.Kayak: The world's largest tourist price comparison website, providing all kinds of flight information and prices.

These are just some examples, and the actual situation may vary from region to region. In order to get the best air ticket price, it is suggested that you make various comparisons and studies before purchasing air tickets, and choose the booking software that suits you.