Southwest Airlines (LUV) Q1 2026: Record Revenue and Margin Comeback Face Fuel Cost Headwinds

Southwest Airlines (LUV) delivered its strongest first-quarter results in company history in Q1 2026, reporting a dramatic swing from a $149 million net loss in the year-ago period to $227 million in net income. Revenue per available seat mile (RASM) and premium product adoption both hit records, validating the transformation plan Southwest launched 18 months ago. The headline stumbling block: jet fuel costs are expected to increase sequentially in Q2, pushing second-quarter earnings guidance well below what analysts had expected.

Southwest’s Transformation Milestone: From Loss to Profit in Four Quarters

Southwest reported total operating revenues of $7.25 billion for Q1 2026, up 12.8% from $6.43 billion in Q1 2025. Passenger revenues rose 13.4% to $6.59 billion, while other revenues (cargo, loyalty, ancillaries) grew 6.6% to $614 million.

Net income came in at $227 million, or $0.45 diluted EPS, versus a net loss of $149 million, or $(0.26) per share, in Q1 2025. Operating income was $330 million, compared to an operating loss of $223 million a year earlier. Operating margin expanded 8.1 percentage points to 4.6%.

Total operating expenses rose just 4.0% to $6.92 billion, well below the revenue growth pace. Cost per available seat mile excluding fuel, profit sharing, and special items (CASM-X) increased only 2.3% year-over-year, coming in below prior guidance.

Q1 2026 Financial Highlights
Q1 2026
Q1 2025
Change

Total Operating Revenues
$7,249M
$6,428M
+12.8%

Passenger Revenues
$6,591M
$5,811M
+13.4%

Other Revenues
$614M
$576M
+6.6%

Net Income (GAAP)
$227M
$(149)M
—

Diluted EPS (GAAP)
$0.45
$(0.26)
—

Operating Income (GAAP)
$330M
$(223)M
—

Operating Margin
4.6%
(3.5)%
+8.1 pts

Total Operating Expenses
$6,919M
$6,651M
+4.0%

Aircraft Fuel Expense
$1,356M
$1,249M
+8.6%

Operating Cash Flow
$1,400M
$849M
+65%

All figures are GAAP unless otherwise noted.

Market capitalization was approximately $19.5 billion as of April 24, 2026, based on a share price of approximately $38.62. Southwest repurchased $1.25 billion in shares and paid $93 million in dividends during the quarter, ending Q1 with approximately 505 million shares outstanding.

Revenue Drivers: Assigned Seating, Managed Business, and Loyalty

The transformation plan Southwest announced in late 2024 reached full implementation in Q1 2026. The airline launched assigned and extra legroom seating on January 27, 2026, immediately generating material revenue uplift. Approximately 60% of customers opted to upgrade from base fares in Q1, compared to roughly 20% a year earlier — a 40-point shift that drove the bulk of the 11.2% year-over-year RASM increase.

Managed business revenue grew 16% year-over-year in Q1 and set a new quarterly record; March alone was up 25%. Southwest entered a new strategic partnership with All Nippon Airways, expanding its global network to seven airline partners. The Rapid Rewards loyalty program added new enrollments at a 37% year-over-year rate, and tier-status earners grew 62%.

Fleet modernization continued: Southwest ended Q1 with 800 aircraft, having received 10 Boeing 737-8 deliveries and retired 13 older aircraft. The company announced Starlink ultra-fast Wi-Fi deployment, with at least 300 aircraft expected to be equipped by year-end 2026.

The Fuel Cost Problem: Why Q2 Guidance Missed the Street

Q1 fuel costs were already above plan. Southwest paid $2.73 per gallon in Q1 against prior guidance of approximately $2.40, adding $164 million in unbudgeted fuel expense and reducing EPS by approximately $0.22 per share.

The second-quarter guidance reflects a far sharper escalation. Southwest projected second-quarter 2026 adjusted EPS of $0.35 to $0.65, based on an assumed fuel cost of $4.10 to $4.15 per gallon (forward curve as of April 16, 2026). The $4.10–$4.15 per gallon figure represents a near-50% sequential increase from Q1’s $2.73 per gallon, significantly above the prior-year level. Analyst consensus heading into the print was approximately $0.45 for Q2 EPS.

Southwest, like several major U.S. airlines, does not currently maintain active fuel hedges. The decision to forgo hedging, made when fuel markets appeared stable, has left the company fully exposed to spot price volatility. The company noted macroeconomic uncertainty and ongoing geopolitical developments as contributing factors to the elevated forward fuel curve.

CASM-X is expected to rise 3.5% to 4.0% in Q2, compared to 2.3% in Q1, partially reflecting a one-time impact from removing six seats from Boeing 737-700 aircraft to enable extra legroom configuration.

second-quarter 2026 Guidance
second-quarter 2026 Guidance
Q1 2026 Actual

Adjusted EPS (non-GAAP)
$0.35–$0.65
$0.45

RASM (year-over-year)
+16.5%–18.5%
+11.2%

CASM-X (year-over-year)
+3.5%–4.0%
+2.3%

Fuel Cost per Gallon
$4.10–$4.15
$2.73

Capacity (ASMs, year-over-year)
Flat to +1.0%
+1.5%

All figures are non-GAAP or operational metrics as stated.

What the $4.00 Full-Year Target Requires — and the Key Risks

Southwest reiterated its full-year 2026 adjusted EPS target of $4.00. Management was explicit that hitting this figure requires either lower fuel prices than the current forward curve implies, or stronger revenue performance to offset elevated fuel expense. The company declined to formally revise the target, stating it expects to provide updates as conditions evolve.

Full-year 2026 capacity growth was tightened to approximately +2%, the low end of the prior 2%–3% range. Net capital expenditures are projected at $3.0–$3.5 billion, covering aircraft-related spending, technology, and facility investments. Southwest expects to receive 66 Boeing 737-8 aircraft and retire approximately 60 aircraft in 2026.

The balance sheet provides a meaningful cushion. Southwest ended Q1 with $3.3 billion in cash and equivalents, a $1.5 billion undrawn revolving credit facility, and $16.5 billion in net book value of unencumbered aircraft and related assets. Adjusted leverage stood at 2.2x.

The primary risk to the $4.00 target is fuel. The company must sustain the double-digit RASM growth it has demonstrated in Q1 and second-quarter guidance — in addition to the ongoing transformation benefits from premium product adoption and managed business gains — to offset what is now a materially higher fuel cost structure. Demand elasticity from fare increases, the durability of business travel, and any further geopolitical disruption to fuel markets are the most significant variables investors should watch.

Key Signals for Investors

Q1 2026 net income of $227 million versus a net loss of $149 million in Q1 2025 confirms the transformation is producing real financial results, not just operating metrics.
RASM accelerated to +11.2% year-over-year, and second-quarter guidance implies +16.5%–18.5% — the pace needed to offset fuel is steep, but the trajectory is moving in the right direction.
The $4.00 full-year EPS target is now a fuel-price wager: at the Q2 forward curve of $4.10–$4.15 per gallon, Southwest needs the rest of 2026 to deliver fuel relief or further revenue outperformance; without one or the other, consensus estimates will move below $4.00.
The unhedged fuel position means any additional geopolitical disruption flows directly to the bottom line — investors should treat the full-year EPS target as a range, not a commitment.
Strong cash generation ($1.4 billion operating cash flow, 2.2x leverage) and a record loyalty program trajectory provide a financial and competitive floor for a company navigating a structurally shifting cost environment.