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Side-by-side financial comparison of Frontier Group Holdings, Inc. (ULCC) and Zscaler, Inc. (ZS). Click either name above to swap in a different company.

Frontier Group Holdings, Inc. is the larger business by last-quarter revenue ($997.0M vs $788.1M, roughly 1.3× Zscaler, Inc.). Frontier Group Holdings, Inc. runs the higher net margin — 5.3% vs -1.5%, a 6.8% gap on every dollar of revenue. On growth, Zscaler, Inc. posted the faster year-over-year revenue change (25.5% vs -0.5%). Zscaler, Inc. produced more free cash flow last quarter ($431.0M vs $-113.0M). Over the past eight quarters, Zscaler, Inc.'s revenue compounded faster (22.5% CAGR vs 7.4%).

Frontier Communications Parent, Inc. is an American telecommunications company with a fiber-optic network and cloud-based services owned by Verizon. It was previously known as Citizens Utilities Co., Citizens Communications Co., and Frontier Communications Corp.

Zscaler, Inc. is an American cloud security company based in San Jose, California. The company offers cloud-based services to protect enterprise networks and data.

ULCC vs ZS — Head-to-Head

Bigger by revenue
ULCC
ULCC
1.3× larger
ULCC
$997.0M
$788.1M
ZS
Growing faster (revenue YoY)
ZS
ZS
+26.0% gap
ZS
25.5%
-0.5%
ULCC
Higher net margin
ULCC
ULCC
6.8% more per $
ULCC
5.3%
-1.5%
ZS
More free cash flow
ZS
ZS
$544.0M more FCF
ZS
$431.0M
$-113.0M
ULCC
Faster 2-yr revenue CAGR
ZS
ZS
Annualised
ZS
22.5%
7.4%
ULCC

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
ULCC
ULCC
ZS
ZS
Revenue
$997.0M
$788.1M
Net Profit
$53.0M
$-11.6M
Gross Margin
76.6%
Operating Margin
4.9%
-4.6%
Net Margin
5.3%
-1.5%
Revenue YoY
-0.5%
25.5%
Net Profit YoY
-1.9%
3.6%
EPS (diluted)
$0.24
$-0.07

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
ULCC
ULCC
ZS
ZS
Q4 25
$997.0M
$788.1M
Q3 25
$886.0M
$719.2M
Q2 25
$929.0M
$678.0M
Q1 25
$912.0M
$647.9M
Q4 24
$1.0B
$628.0M
Q3 24
$935.0M
$592.9M
Q2 24
$973.0M
$553.2M
Q1 24
$865.0M
$525.0M
Net Profit
ULCC
ULCC
ZS
ZS
Q4 25
$53.0M
$-11.6M
Q3 25
$-77.0M
$-17.6M
Q2 25
$-70.0M
$-4.1M
Q1 25
$-43.0M
$-7.7M
Q4 24
$54.0M
$-12.1M
Q3 24
$26.0M
$-14.9M
Q2 24
$31.0M
$19.1M
Q1 24
$-26.0M
$-28.5M
Gross Margin
ULCC
ULCC
ZS
ZS
Q4 25
76.6%
Q3 25
76.1%
Q2 25
77.0%
Q1 25
77.1%
Q4 24
77.5%
Q3 24
78.0%
Q2 24
78.6%
Q1 24
77.7%
Operating Margin
ULCC
ULCC
ZS
ZS
Q4 25
4.9%
-4.6%
Q3 25
-8.7%
-4.5%
Q2 25
-8.1%
-3.7%
Q1 25
-5.0%
-6.2%
Q4 24
4.5%
-4.9%
Q3 24
2.0%
-4.5%
Q2 24
2.6%
-0.5%
Q1 24
-3.6%
-8.7%
Net Margin
ULCC
ULCC
ZS
ZS
Q4 25
5.3%
-1.5%
Q3 25
-8.7%
-2.4%
Q2 25
-7.5%
-0.6%
Q1 25
-4.7%
-1.2%
Q4 24
5.4%
-1.9%
Q3 24
2.8%
-2.5%
Q2 24
3.2%
3.5%
Q1 24
-3.0%
-5.4%
EPS (diluted)
ULCC
ULCC
ZS
ZS
Q4 25
$0.24
$-0.07
Q3 25
$-0.34
$-0.11
Q2 25
$-0.31
$-0.03
Q1 25
$-0.19
$-0.05
Q4 24
$0.24
$-0.08
Q3 24
$0.11
$-0.09
Q2 24
$0.14
$0.12
Q1 24
$-0.12
$-0.19

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
ULCC
ULCC
ZS
ZS
Cash + ST InvestmentsLiquidity on hand
$671.0M
$1.3B
Total DebtLower is stronger
$620.0M
Stockholders' EquityBook value
$491.0M
$2.0B
Total Assets
$7.2B
$6.5B
Debt / EquityLower = less leverage
1.26×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ULCC
ULCC
ZS
ZS
Q4 25
$671.0M
$1.3B
Q3 25
$566.0M
$2.4B
Q2 25
$563.0M
$2.0B
Q1 25
$686.0M
$1.8B
Q4 24
$740.0M
$1.6B
Q3 24
$576.0M
$1.4B
Q2 24
$658.0M
$1.3B
Q1 24
$622.0M
$1.4B
Total Debt
ULCC
ULCC
ZS
ZS
Q4 25
$620.0M
Q3 25
$673.0M
Q2 25
$565.0M
$1.1B
Q1 25
$512.0M
$1.1B
Q4 24
$507.0M
$1.1B
Q3 24
$474.0M
$1.1B
Q2 24
$455.0M
$1.1B
Q1 24
$469.0M
$1.1B
Stockholders' Equity
ULCC
ULCC
ZS
ZS
Q4 25
$491.0M
$2.0B
Q3 25
$434.0M
$1.8B
Q2 25
$506.0M
$1.8B
Q1 25
$570.0M
$1.6B
Q4 24
$604.0M
$1.4B
Q3 24
$549.0M
$1.3B
Q2 24
$520.0M
$1.1B
Q1 24
$484.0M
$958.9M
Total Assets
ULCC
ULCC
ZS
ZS
Q4 25
$7.2B
$6.5B
Q3 25
$6.7B
$6.4B
Q2 25
$6.5B
$5.3B
Q1 25
$6.5B
$5.0B
Q4 24
$6.2B
$4.7B
Q3 24
$5.8B
$4.7B
Q2 24
$5.7B
$4.2B
Q1 24
$5.2B
$3.9B
Debt / Equity
ULCC
ULCC
ZS
ZS
Q4 25
1.26×
Q3 25
1.55×
Q2 25
1.12×
0.64×
Q1 25
0.90×
0.71×
Q4 24
0.84×
0.80×
Q3 24
0.86×
0.90×
Q2 24
0.88×
1.04×
Q1 24
0.97×
1.19×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
ULCC
ULCC
ZS
ZS
Operating Cash FlowLast quarter
$-91.0M
$448.3M
Free Cash FlowOCF − Capex
$-113.0M
$431.0M
FCF MarginFCF / Revenue
-11.3%
54.7%
Capex IntensityCapex / Revenue
2.2%
2.2%
Cash ConversionOCF / Net Profit
-1.72×
TTM Free Cash FlowTrailing 4 quarters
$-600.0M
$924.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ULCC
ULCC
ZS
ZS
Q4 25
$-91.0M
$448.3M
Q3 25
$-215.0M
$250.6M
Q2 25
$-133.0M
$211.1M
Q1 25
$-86.0M
$179.4M
Q4 24
$87.0M
$331.3M
Q3 24
$-156.0M
$203.6M
Q2 24
$9.0M
$173.4M
Q1 24
$-22.0M
$142.1M
Free Cash Flow
ULCC
ULCC
ZS
ZS
Q4 25
$-113.0M
$431.0M
Q3 25
$-217.0M
$190.6M
Q2 25
$-166.0M
$138.9M
Q1 25
$-104.0M
$164.4M
Q4 24
$73.0M
$314.3M
Q3 24
$-170.0M
$154.2M
Q2 24
$-22.0M
$137.8M
Q1 24
$-39.0M
$111.2M
FCF Margin
ULCC
ULCC
ZS
ZS
Q4 25
-11.3%
54.7%
Q3 25
-24.5%
26.5%
Q2 25
-17.9%
20.5%
Q1 25
-11.4%
25.4%
Q4 24
7.3%
50.1%
Q3 24
-18.2%
26.0%
Q2 24
-2.3%
24.9%
Q1 24
-4.5%
21.2%
Capex Intensity
ULCC
ULCC
ZS
ZS
Q4 25
2.2%
2.2%
Q3 25
0.2%
8.3%
Q2 25
3.6%
10.6%
Q1 25
2.0%
2.3%
Q4 24
1.4%
2.7%
Q3 24
1.5%
8.3%
Q2 24
3.2%
6.4%
Q1 24
2.0%
5.9%
Cash Conversion
ULCC
ULCC
ZS
ZS
Q4 25
-1.72×
Q3 25
Q2 25
Q1 25
Q4 24
1.61×
Q3 24
-6.00×
Q2 24
0.29×
9.07×
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

ULCC
ULCC

Aircraft Fare$453.0M45%
Passenger Service Fees$227.0M23%
Passenger Baggage$177.0M18%
Passenger Seat Selection$69.0M7%
Other Passenger Revenue$36.0M4%
Other$35.0M4%

ZS
ZS

Segment breakdown not available.

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