US airline stocks are likely to enter a near-term consolidation period after a rally tied to macro headlines lost momentum, according to a UBS Global Research report published Tuesday. The firm says the market's recent enthusiasm - sparked by geopolitical developments and the prospect of a reopening of the Strait of Hormuz - has given way to renewed emphasis on carrier-level fundamentals and upcoming second-quarter results.
UBS analysts highlighted that the U.S. Global Jets ETF (NYSE:JETS) climbed roughly 12% across a recent three-day window as investors priced in lower geopolitical risk and a potential easing of tanker routes. Yet the bank noted that many carrier shares failed to hold intra-day peaks, suggesting the initial multi-expansion lift is largely exhausted and volatility tied to macro headlines should subside.
"From here, volatility around macro headlines should normalize and micro/stock fundamentals should come back to focus with Q2 results likely to be the next catalyst," the UBS team wrote, underscoring that fresh upward earnings revisions will be necessary to propel the sector into another leg of broad gains.
Valuation gaps and potential reversion
UBS flagged a pronounced valuation gap between Delta Air Lines Inc (NYSE:DAL) and United Airlines Holdings Inc (NASDAQ:UAL). Based on 2027 consensus estimates, Delta is trading at a price-to-earnings premium exceeding 2 times that of United - a spread UBS says has been sustained historically only in the 2014-2015 period.
The bank expects that narrowing of the differential will likely occur through multiple expansion at United rather than contraction at Delta. UBS estimates that a valuation reversion of this nature could lift United's stock by about 12% on its own.
Lower jet fuel prices were highlighted as a catalyst for both earnings and multiple improvement at United. Fuel slid roughly 13% over a three-session span and sits about 40% below April peaks, a move UBS says should bolster UAL's profitability and investor sentiment toward its valuation relative to Delta.
Fuel sensitivity across carriers
UBS pointed to sizable differences in how carrier earnings react to changes in jet fuel costs. Using 2027 EPS exposure estimates, the bank said a $0.10 per gallon decline in fuel would raise Alaska Air Group Inc's (NYSE:ALK) 2027 EPS by 13% and American Airlines Group's (NASDAQ:AAL) 2027 EPS by 16%.
By contrast, Delta's EPS would see a more modest 4.5% boost from the same fuel move, while United and Southwest Airlines Company (NYSE:LUV) would each see roughly a 6% uplift in 2027 EPS. UBS recommended Alaska and American as the names with the highest earnings sensitivity to falling energy costs for investors seeking direct exposure to lower jet fuel.
Demand picture and second-half RASM assumptions
Wall Street consensus projections for second-half revenue per available seat mile (RASM) assume some softening of demand later in the year. However, UBS channel checks and corporate discussions suggest limited evidence of a slowdown to date, with the research team reporting "little to no demand slowdown thus far." This dynamic leaves room for potential upside to second-half revenue expectations should the resilience continue.
UBS cautioned, however, that the market is unlikely to reward higher valuation multiples if any earnings outperformance is driven primarily by cheaper fuel rather than durable revenue strength. In short, beats that stem from cost relief alone may not trigger sustained re-ratings.
Where carriers sit on 2027 P/E multiples
| Carrier | 2027 P/E multiple |
|---|---|
| Delta Air Lines | 10.5x |
| Southwest Airlines | 10x |
| Air Canada (TSX:AC) | 10.5x |
| United Airlines | 8.5x |
| Alaska Air Group | 8x |
| American Airlines | 7x |
UBS maintains a "Buy" rating on Delta, United, American, and Alaska Air. The bank argues that select laggards retain valuation upside, even as the industry remains exposed to volatile labor costs and potential macroeconomic slowdowns.
Implications for investors
With macro-driven gains cooling, UBS signals that second-quarter earnings reports and company-specific performance metrics will likely determine near-term stock trajectories. Investors who favor exposure to falling jet fuel should consider Alaska and American for their higher EPS sensitivity to energy costs, while those focused on valuation reversion may be watching United for potential multiple expansion.
Overall, UBS's view emphasizes a shift from headline-driven trading to fundamentals-based stock selection, with demand resilience, fuel trends, and relative valuation the primary variables to watch in the coming weeks.