The Denver-based carrier has gotten rid of its customer service phone line.
"Our Customer Care function recently transitioned to fully digital communications, which enables us to ensure our customers get the information they need as expeditiously and efficiently as possible," Frontier said in a statement, telling USA TODAY it was a gradual transition that was completed last weekend.
A chatbot on Frontier's website can answer common questions. Customers can also can email the airline or file formal complaints through its website.
"If live agent support is needed, we have live chat available 24 hours a day / 7 days a week," Frontier added, noting that most of its customers prefer digital communication. "Customers may also chat with us via common social media channels and WhatsApp."
Holiday flights: What kind of travel insurance you may need
Don't make these travel mistakes!: Travel agents sound off on common issues they see
Does Frontier Airlines have 24-hour customer service?
Round-the-clock customer service is only available via live chat.
How do I speak to a person at Frontier Airlines?
The only way to speak to a customer service agent is at the airport now that other Frontier communication has gone digital.
What is the phone number for Frontier?
Frontier Airlines's phone number is (801) 401-9000, but it goes to a recording.
"Hello, you've reached Frontier Airlines, home of low fares done right," the recording says. "At Frontier, we offer the lowest fares in the industry by operating our airline as efficiently as possible. We want our customers to be able to operate efficiently as well, which is why we make it easy to find what you need at flyfrontier.com or on our mobile app. We also have a chat service available 24/7."
Customers can press one to start a chat if they are calling from a mobile device. They can press two if they're not using a mobile device or "do not wish to chat."
Pressing two leads to another recording, which says, "OK. As a reminder, we offer several ways to reach us, which can be found on the customer support page at flyfrontier.com. Have a great day."
Then it hangs up.
This article originally appeared on USA TODAY: Frontier Airlines cuts customer service phone line