12 airlines have 23 international routes this summer.
By James Pearson, Simply Flying.com
"Austin is expecting its best summer ever for international operations. It has 424,000 departing international seats between March 26th and October 28th (double for both ways), according to the latest OAG data. That is 4% higher than the previous best and over twice as much as in the pre-pandemic summer 2019. The return of WestJet from Calgary has helped, along with the coming launch of Copa Airlines from Panama City.
Austin's international network
This summer, Austin has 12 airlines operating internationally. They have 23 routes, of which 10 started in 2022 or will begin or resume this year. If the airlines are stripped out, there are 17 airport pairs, as detailed below in order of departing seats. Note that flights can vary widely; where this happens, I've put the minimum and maximum planned."
The article has a lot of good info, worth the click through and additional reading.
https://simpleflying.com/austin-airport-record-international-ops-summer-2023/