Frontier Airlines will no longer have to pay a $162,000 fine to the federal government for operating chronically delayed flights for months on end after the Trump administration ruled the Denver-based carrier should be rewarded for making investments that provide “meaningful improvements” to passengers affected by flight disruptions.
In January 2025, Frontier became the second airline ever to be fined by the Department of Transportation for operating chronically delayed flights under a consumer protection rule that had long existed but had never been enforced.
For the purposes of this rule, a specific flight number is classed as ‘chronically delayed’ if it arrives late at its destination by at least 30 minutes more than half of the time over a period of at least five months.
The idea behind the rule is to prevent airlines from operating unrealistic schedules, although the reason behind the delays is of no consequence to the DOT. Even if the delays are entirely out of the control of the airline, the rule assumes that airlines should identify that their schedule needs adjusting and take action.
In practice, the DOT never enforced this rule, but in the dying days of the outgoing Biden administration, the Office of Aviation Consumer Protection suddenly started to slap airlines with fines of up to $40,272 for each rule violation.
In the case of Frontier, the total fine came to $650,000 after it was found to have operated three chronically delayed flights in 2022 and 2023, including Flight 131 from St. Thomas to Orlando, which had to make a delay-inducing technical refueling stop in San Juan due to temporary weight restrictions.
Despite numerous mitigating factors, the DOT ruled that Frontier had to pay half of the fine in two installments within 12 months. The remaining 50% of the fine would only have to be paid if Frontier were found guilty of operating any more chronically delayed flights.
Frontier made the first $162,000 payment in March 2025 and was due to make the second installment payment.
However, in a revised consent order published on Friday by the DOT, the airline has received a credit for the full amount of the second installment in recognition of “pro-consumer” efforts made by Frontier in the last 12 months.
These include an $80,000 investment in its mobile app that sends out push notifications to passengers affected by flight delays. The airline also provided customers on the ‘chronically delayed’ flights with more than $100,000 in voucher compensation, which it was not legally required to do.
Explaining why it was providing credit to Frontier for the second installment, the DOT said in the revised consent order that it “believes that this approach is in the public interest because it incentivizes airlines to make investments to benefit consumers materially, rather than paying a fine to the government.”
Frontier’s fine for operating chronically delayed flights paled in comparison to the civil penalty that JetBlue was slapped with for the same offence. JetBlue was fined $2 million, although, like Frontier, the airline was only required to pay half of this amount.
