Frontier Group Holdings, Inc.

2 Liquidity Total liquidity as of September 30, 2026 was $1.18 billion, consisting of unrestricted cash and cash equivalents and availability from the Company's revolving credit facility, representing approximately 25 percent of trailing 12-month adjusted (non-GAAP) revenue.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

3 Fourth Quarter 2026 Estimated Adjusted (non-GAAP) diluted earnings per share (a)(b)(c) $(0.15) to $0.05 Capacity growth (compared to corresponding 2025 quarter) (d) 5 to 6 percent Full Year 2026 Estimated Pre-delivery deposits, net of refunds ($ millions) (e) $(170) to $(195) Other capital expenditures ($ millions) (f) $170 to $195 _________________ (a) Includes guidance on certain non-GAAP measures which excludes, among other things, special items.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

Adjusted net income (loss) and adjusted income (loss) before income taxes do not reflect the impact of certain cash charges resulting from matters the Company considers not to be indicative of the Company's ongoing operations and do not reflect the Company's cash expenditures, or future requirements, for capital expenditures or contractual commitments, and other companies in the industry may calculate adjusted net income (loss) and adjusted income (loss) before income taxes differently than the Company does, limiting their usefulness as comparative measures.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

EBITDA and adjusted EBITDA do not reflect the impact of certain cash charges resulting from matters the Company considers not to be indicative of its ongoing operations the Company's cash expenditures, or future requirements, for capital expenditures or contractual commitments changes in, or cash requirements for, the Company's working capital needs or the interest expense, or the cash requirements necessary to service interest or principal payments, on the Company's indebtedness.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

(b) EBITDAR and adjusted EBITDAR are included as supplemental disclosures because the Company believes they are useful solely as valuation metrics for airlines as their calculations isolate the effects of financing in general, the accounting effects of capital spending and acquisitions (primarily aircraft, which may be acquired directly, directly subject to acquisition debt, by capital lease or by operating lease, each of which is presented differently for accounting purposes), and income taxes, which may vary significantly between periods and for different airlines for reasons unrelated to the underlying value of a particular airline.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

Adjusted earnings (loss) per share does not reflect the impact of certain cash charges resulting from matters the Company considers not to be indicative of ongoing operations and does not reflect the cash expenditures, or future requirements, for capital expenditures or contractual commitments, and other companies in the industry may calculate Adjusted earnings (loss) per share differently than the Company does, limiting its usefulness as a comparative measure.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

htm EX-99.1 Document Frontier Airlines Delivers Record Third Quarter 2026 Revenue of $1.4 billion, up 53 percent Year-over-Year, and Adjusted EPS Significantly Above Guidance Overcoming High Fuel Prices Record total revenue driven by strong demand and continued execution of commercial strategy Increased RASM 30 percent and total revenue over 50 percent year-over-year DENVER - October 28, 2026 - Frontier Group Holdings, Inc.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

The Company delivered record revenue of $1.4 billion, up 53 percent versus the prior year, due to strong travel demand and the continued progression of the Company's revenue management initiatives, while maintaining cost discipline.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

These results reflect the successful progression of the Company's strategic initiatives set out earlier this year, and it gives us confidence in our ability to translate our momentum into sustainable profitability.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

Revenue and Cost Performance Revenue was approximately $1.4 billion in the third quarter of 2026, a Company record, driven by strong travel demand and the continued progression of the Company's revenue management initiatives.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

Expected adjusted (non-GAAP) diluted earnings per share for the fourth quarter of 2026, as noted below, reflects continued expected progress across key commercial initiatives and strong travel demand, with forecast RASM for the fourth quarter of 2026 again expected to be up over 20 percent as compared to the corresponding 2025 quarter, while elevated fuel prices are an expected cost headwind.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

This guidance is subject to significant risks and uncertainties that could cause actual results to differ materially, including the risk factors discussed in the section Caution Regarding Forward-Looking Statements.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

Expected adjusted (non-GAAP) diluted earnings per share for the fourth quarter of 2026, as noted below, reflects continued expected progress across key commercial initiatives and strong travel demand, with forecast RASM for the fourth quarter of 2026 again expected to be up over 20 percent as compared to the corresponding 2025 quarter, while elevated fuel prices are an expected cost headwind.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

Additionally, forward-looking statements include statements that do not relate solely to historical facts, such as forward guidance and estimates of future financial or operational results, statements which identify uncertainties or trends, discuss the possible future effects of current known trends or uncertainties, or which indicate that the future effects of known trends or uncertainties cannot be predicted, guaranteed or assured.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

Revenue — prior quarter passage and this quarter's passage are both cited.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026

Cost Performance revenue — prior quarter passage and this quarter's passage are both cited.

SEC original ↗Frontier Group Holdings, Inc. — Earnings release (8-K exhibit)EX-99Oct 28, 2026