Indians can already use Amazon to pay for their mobile bills and borrow money to purchase items, but now there’s more. This week, the ecommerce giant quietly introduced an additional feature to its shopping site: flight tickets.

Amazon has partnered with local travel service Cleartrip to add flight booking option to its payment service — Amazon Pay — in India, according to an FAQ posted on its website. The feature, first spotted by news outlet Skift, is available on its Indian website and app.

The addition of plane ticketing underscores Amazon’s growing interest in expanding its payment service in India, which is both one of its fastest-growing markets and a country it uses to test new ideas.

Since launching Amazon Pay in India in late 2016, the company has added a myriad of features to the service. Amazon Pay today allows Indians to top up their phones, cable TV subscriptions, and pay for electricity and water bills. Last month, Amazon announced support for peer-to-peer (P2P) money transfers for users of its Android app. Amazon also plans to soon let users order food from its website, local media reported last month.

The company has also inked deals with other top firms such as movie ticketing site BookMyShow, food delivery startup Swiggy, and bus ticketing startup Redbus to embed Amazon Pay into many popular Indian services. To spur its adoption, the company has offered cashback incentives to those who checkout using Amazon Pay.

The flight ticketing option is not much different. The company is promising a one-time cashback of up to Rs 2,000 ($28.20) for each first booking.

The push comes as many local companies in India and those that operate in the nation begin to mold their apps into so-called super apps. Top mobile wallet service Paytm has expanded to add a number of financial services, including as of this week a credit card, in recent years. India’s ride-hailing service Ola also entered the credit card business this week

Truecaller, an app that lets users screen for spam calls, has added messaging and payment features in India. The bundling often seems big names work together. For example, Paytm recently partnered with Zomato to test food ordering option on the mobile wallet app, a source with knowledge of the partner told TechCrunch.

Amazon’s interest in flight ticketing option in India should also help its partner ClearTrip gain a larger foothold in the nation. The company competes with giant MakeMyTrip, Booking.com, and Paytm . Google also offers flights in India, though, at the moment, that is limited to search. When it comes to transactions, users are directed to ticketing websites to complete their purchase.