What is LUV's forecasted revenue?

Southwest Airlines Co is forecasted to generate $26.8B in FY revenue, representing -4.6% year-over-year growth.

How accurate is the LUV revenue forecast model?

The ARDL model achieves 10.5% MAPE (Mean Absolute Percentage Error). In a holdout test, it predicted $7.4B versus the actual $7.4B.

Southwest Airlines Co LUV

Revenue Intelligence Report • 62 quarters of SEC filing data • Updated 2026-03-15

The revenue outlook for Southwest is a negative 4.6% year over year, with FY26 revenue around 26.8 billion and near-term demand softening, even as structural network growth and cost leverage provide a longer-run upside. Binding constraint: capacity constraints—aircraft and crew availability that limit flight volumes and revenue upside, despite rising SG&A efficiency. Our econometric model shows SG&A spending is the primary growth lever, with structural growth contributing about a quarter; the model notes the SG&A multiplier has risen, implying incremental spend yields outsized topline gains if capacity supports it. Key risk: sustained demand deterioration or ongoing capacity bottlenecks that prevent the SG&A-driven revenue upside from fully materializing.

Investment Thesis

At 10.5% MAPE, the model captures Southwest Airlines Co's broad revenue trajectory, though quarterly variability suggests sensitivity to external factors. Each $1 of SG&A spending generates $1.19 in revenue, reflecting strong commercial efficiency.

Next FY Revenue

$26.8B

-4.6% YoY

SG&A Multiplier

$1.19 per $1

Model Accuracy

10.5% MAPE

Holdout validation: The model predicted $7.4B vs the actual $7.4B — an error of 0.1%.

Note: Southwest Airlines Co does not report R&D expenses separately. This analysis uses SG&A spending only.

Revenue Forecast

Quarterly Detail

Quarter	Model Forecast	Actual	95% Range	YoY Growth	Status
Q4 2025	$7.4B	$7.4B	$4.9B – $11B	+7.3%	✓ In range
Q2 2026	$6.3B		$4.0B – $9.7B	-2.6%
Q3 2026	$7.0B		$4.5B – $11B	-3.0%
Q4 2026	$6.3B		$3.9B – $10B	-8.6%
Q1 2027	$7.1B		$4.4B – $12B	-4.2%

Seasonal Factors

Multiplicative seasonal adjustment: These factors capture Southwest Airlines Co's systematic quarterly revenue patterns relative to the trend model. A factor of 1.05 means that quarter typically runs 5% above the underlying trend; 0.95 means 5% below. Factors are computed as the median of (actual / fitted) across all available quarters.

Fiscal Quarter	Seasonal Factor	vs Trend	Interpretation	Obs.
FQ1 (Sep–Nov)	0.9964	-0.4%	In line with trend	15
FQ2 (Dec–Feb)	0.9871	-1.3%	In line with trend	15
FQ3 (Mar–May)	0.9819	-1.8%	In line with trend	14
FQ4 (Jun–Aug)	1.1118	+11.2%	+11.2% above trend	14

How Spending Drives Revenue

Reading this chart: Each line shows the cumulative revenue generated per $1 spent over subsequent quarters. The effect builds over 4-5 quarters as investments mature.

Spending Efficiency Over Time

Time-varying analysis: A penalized spline model (GAM) tracks how the link between spending and revenue has evolved over 62 quarters. A rising multiplier means each dollar of spending drives more revenue over time, signaling improving efficiency. A falling multiplier can indicate market saturation or rising cost-to-acquire.
Current SG&A multiplier: 3.3786

Enhanced forecast: The time-varying model (GAM) outperformed the fixed-coefficient ARDL on holdout validation (-0.1% error vs ARDL, R² = 0.989), so this report uses the GAM for its quarterly forecasts.

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