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Side-by-side financial comparison of Southwest Airlines (LUV) and Thermo Fisher Scientific (TMO). Click either name above to swap in a different company.

Thermo Fisher Scientific is the larger business by last-quarter revenue ($11.0B vs $7.2B, roughly 1.5× Southwest Airlines). Thermo Fisher Scientific runs the higher net margin — 15.0% vs 3.1%, a 11.9% gap on every dollar of revenue. On growth, Southwest Airlines posted the faster year-over-year revenue change (12.8% vs 6.2%). Over the past eight quarters, Thermo Fisher Scientific's revenue compounded faster (2.2% CAGR vs -0.7%).

Southwest Airlines is a major low-cost airline of the United States. It is headquartered in the Love Field neighborhood of Dallas, Texas. It is the fourth-largest airline in North America when measured by passengers carried, as of 2024. With its all-Boeing 737 fleet, Southwest serves over 100 destinations in 42 states, Washington, D.C.

Thermo Fisher Scientific Inc. is an American life science and clinical research company. It is a global supplier of analytical instruments, clinical development solutions, specialty diagnostics, laboratory, pharmaceutical and biotechnology services. Based in Waltham, Massachusetts, Thermo Fisher was formed through the merger of Thermo Electron and Fisher Scientific in 2006.

LUV vs TMO — Head-to-Head

Bigger by revenue
TMO
TMO
1.5× larger
TMO
$11.0B
$7.2B
LUV
Growing faster (revenue YoY)
LUV
LUV
+6.6% gap
LUV
12.8%
6.2%
TMO
Higher net margin
TMO
TMO
11.9% more per $
TMO
15.0%
3.1%
LUV
Faster 2-yr revenue CAGR
TMO
TMO
Annualised
TMO
2.2%
-0.7%
LUV

Income Statement — Q1 FY2026 vs Q1 FY2026

Metric
LUV
LUV
TMO
TMO
Revenue
$7.2B
$11.0B
Net Profit
$227.0M
$1.7B
Gross Margin
Operating Margin
16.9%
Net Margin
3.1%
15.0%
Revenue YoY
12.8%
6.2%
Net Profit YoY
252.3%
9.6%
EPS (diluted)
$0.45
$4.43

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
LUV
LUV
TMO
TMO
Q1 26
$7.2B
$11.0B
Q4 25
$7.4B
$12.2B
Q3 25
$6.9B
$11.1B
Q2 25
$7.2B
$10.9B
Q1 25
$6.4B
$10.4B
Q4 24
$6.9B
$11.4B
Q3 24
$6.9B
$10.6B
Q2 24
$7.4B
$10.5B
Net Profit
LUV
LUV
TMO
TMO
Q1 26
$227.0M
$1.7B
Q4 25
$323.0M
$2.0B
Q3 25
$54.0M
$1.6B
Q2 25
$213.0M
$1.6B
Q1 25
$-149.0M
$1.5B
Q4 24
$262.0M
$1.8B
Q3 24
$67.0M
$1.6B
Q2 24
$367.0M
$1.5B
Operating Margin
LUV
LUV
TMO
TMO
Q1 26
16.9%
Q4 25
5.3%
18.5%
Q3 25
0.5%
17.5%
Q2 25
3.1%
16.9%
Q1 25
-3.5%
16.6%
Q4 24
4.0%
17.7%
Q3 24
0.6%
17.3%
Q2 24
5.4%
17.3%
Net Margin
LUV
LUV
TMO
TMO
Q1 26
3.1%
15.0%
Q4 25
4.3%
16.1%
Q3 25
0.8%
14.5%
Q2 25
2.9%
14.9%
Q1 25
-2.3%
14.6%
Q4 24
3.8%
16.0%
Q3 24
1.0%
15.4%
Q2 24
5.0%
14.7%
EPS (diluted)
LUV
LUV
TMO
TMO
Q1 26
$0.45
$4.43
Q4 25
$0.56
$5.21
Q3 25
$0.10
$4.27
Q2 25
$0.39
$4.28
Q1 25
$-0.26
$3.98
Q4 24
$0.46
$4.78
Q3 24
$0.11
$4.25
Q2 24
$0.58
$4.04

Balance Sheet & Financial Strength

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

Metric
LUV
LUV
TMO
TMO
Cash + ST InvestmentsLiquidity on hand
$3.3B
$3.3B
Total DebtLower is stronger
$5.4B
Stockholders' EquityBook value
$6.9B
$51.9B
Total Assets
$20.4B
$113.3B
Debt / EquityLower = less leverage
0.78×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
LUV
LUV
TMO
TMO
Q1 26
$3.3B
$3.3B
Q4 25
$3.2B
$10.1B
Q3 25
$3.0B
$3.5B
Q2 25
$3.8B
$6.4B
Q1 25
$8.3B
$5.9B
Q4 24
$8.7B
$5.6B
Q3 24
$9.4B
$6.6B
Q2 24
$10.0B
$8.8B
Total Debt
LUV
LUV
TMO
TMO
Q1 26
$5.4B
Q4 25
$4.6B
$35.9B
Q3 25
$4.1B
$31.9B
Q2 25
$4.1B
$33.0B
Q1 25
$4.1B
$31.4B
Q4 24
$5.1B
$29.1B
Q3 24
$5.1B
$31.2B
Q2 24
$5.1B
$30.3B
Stockholders' Equity
LUV
LUV
TMO
TMO
Q1 26
$6.9B
$51.9B
Q4 25
$8.0B
$53.4B
Q3 25
$7.8B
$51.0B
Q2 25
$8.0B
$50.5B
Q1 25
$9.4B
$49.4B
Q4 24
$10.3B
$49.6B
Q3 24
$10.4B
$49.0B
Q2 24
$10.5B
$47.4B
Total Assets
LUV
LUV
TMO
TMO
Q1 26
$20.4B
$113.3B
Q4 25
$29.1B
$110.3B
Q3 25
$28.3B
$103.0B
Q2 25
$28.7B
$101.2B
Q1 25
$33.2B
$99.0B
Q4 24
$33.8B
$97.3B
Q3 24
$34.8B
$100.4B
Q2 24
$35.6B
$98.5B
Debt / Equity
LUV
LUV
TMO
TMO
Q1 26
0.78×
Q4 25
0.57×
0.67×
Q3 25
0.52×
0.62×
Q2 25
0.51×
0.65×
Q1 25
0.44×
0.64×
Q4 24
0.49×
0.59×
Q3 24
0.49×
0.64×
Q2 24
0.48×
0.64×

Cash Flow & Capital Efficiency

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

Metric
LUV
LUV
TMO
TMO
Operating Cash FlowLast quarter
$1.4B
$1.2B
Free Cash FlowOCF − Capex
$825.0M
FCF MarginFCF / Revenue
7.5%
Capex IntensityCapex / Revenue
8.7%
Cash ConversionOCF / Net Profit
6.25×
0.72×
TTM Free Cash FlowTrailing 4 quarters
$6.8B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
LUV
LUV
TMO
TMO
Q1 26
$1.4B
$1.2B
Q4 25
$294.0M
$3.5B
Q3 25
$287.0M
$2.2B
Q2 25
$401.0M
$1.4B
Q1 25
$860.0M
$723.0M
Q4 24
$476.0M
$3.3B
Q3 24
$113.0M
$2.2B
Q2 24
$-23.0M
$2.0B
Free Cash Flow
LUV
LUV
TMO
TMO
Q1 26
$825.0M
Q4 25
$-565.0M
$3.0B
Q3 25
$-391.0M
$1.8B
Q2 25
$-234.0M
$1.1B
Q1 25
$359.0M
$361.0M
Q4 24
$16.0M
$2.8B
Q3 24
$-404.0M
$1.9B
Q2 24
$-517.0M
$1.7B
FCF Margin
LUV
LUV
TMO
TMO
Q1 26
7.5%
Q4 25
-7.6%
24.5%
Q3 25
-5.6%
16.5%
Q2 25
-3.2%
10.2%
Q1 25
5.6%
3.5%
Q4 24
0.2%
24.7%
Q3 24
-5.9%
17.9%
Q2 24
-7.0%
15.7%
Capex Intensity
LUV
LUV
TMO
TMO
Q1 26
8.7%
Q4 25
11.5%
3.8%
Q3 25
9.8%
3.6%
Q2 25
8.8%
2.7%
Q1 25
7.8%
3.5%
Q4 24
6.6%
4.2%
Q3 24
7.5%
2.6%
Q2 24
6.7%
2.9%
Cash Conversion
LUV
LUV
TMO
TMO
Q1 26
6.25×
0.72×
Q4 25
0.91×
1.75×
Q3 25
5.31×
1.39×
Q2 25
1.88×
0.87×
Q1 25
0.48×
Q4 24
1.82×
1.80×
Q3 24
1.69×
1.33×
Q2 24
-0.06×
1.27×

Financial Flow Comparison

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

Revenue Breakdown by Segment

LUV
LUV

Passenger$6.6B91%
Other$614.0M8%
Freight$44.0M1%

TMO
TMO

Laboratory Products and Biopharma Services$6.0B55%
Life Sciences Solutions$2.6B24%
Analytical Instruments$1.7B16%
Specialty Diagnostics$1.1B10%

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