Will United Airlines achieve investment-grade credit rating from at least one major agency by year-end 2026?

The Q1 achievement is a major positive — leverage at target 9 months early and unsecured access restored should accelerate agency timing. However, agencies typically want 2-3 clean quarters at target before upgrading, and the guide cut complicates the credit picture: while leverage improved, forward EPS visibility weakened. S&P (most active, last upgraded Oct 2024 to BB+) could upgrade by Q4 if Q2/Q3 come in cleanly, but 8 months is tight. Base rate for IG achievement in this window is ~40-50%. Modestly favored, balanced by the guide cut's through-cycle uncertainty and tight calendar.

Agencies were on a 5-upgrade-in-13-months pace with UAL pre-Q1, suggesting they were already building toward IG. Q1 metric achievement plus unsecured market validation gives S&P specifically a clear case to upgrade in fall/winter 2026. However, the guide cut gives them reason to pause — airline IG upgrades are historically rare and agencies are cautious about cyclical businesses. A more likely path: S&P moves to BBB- between Q2 2026 earnings (July) and Q3 earnings (October) if results track cleanly. By Q3/Q4 they have 9-month window still open. But if Q2 disappoints or fuel worsens, upgrade pushes to 2027.

The unsecured debt return for the first time since 2019 is highly significant — this is capital markets affirmation that UAL credit is priced as near-IG. Institutional buyers would not have taken the paper if they thought default risk was meaningful. Raising $2B in the current environment, exceeding expectations, suggests deep demand at tight spreads. This functionally pre-positions UAL for rating upgrade: the bond market is ahead of the agencies. S&P and Moody's both have clear path to BBB-/Baa3 by YE 2026 if Q2/Q3 hold metrics. Probability ~50% reflects: (a) agencies historically lag market pricing by 6-9 months, (b) 8-month window is at the short end but possible.

The guide cut is a headwind here. Agencies upgrading to IG right after a company cuts EPS guidance by 33% would be unusual — they typically want through-cycle evidence, and the guide cut IS a cycle indicator (fuel stress). More likely scenario: agencies keep BB+ with positive outlook, wait for Q3 2026 results to see fuel recovery cadence hit, upgrade in early 2027. Probability modestly below 50%. Only S&P upgrading by YE 2026 counts — one of three is achievable if bond market momentum continues.

Three agencies, one upgrade needed — gives multiple independent shots at the threshold. S&P is most likely (ahead on upgrade cadence). Fitch has airlines expertise and moved IG for other carriers on similar metrics. Moody's historically slowest. If S&P moves by YE 2026 (probable if Q2/Q3 clean), resolution is YES. Probability weights: ~35% S&P moves by YE, ~20% Fitch moves, ~10% Moody's. Joint probability of at least one ~50%. Sensitivity to Q2/Q3 execution is high.

The case for a late-2026 upgrade: Q1 metric hit, bond market validation via unsecured raise, capacity discipline, management's explicit priority. Case against: guide cut creates natural agency pause, fuel cadence is the wildcard, 8 months is short. I see this as genuinely even-odds. Lean slightly below 50% given agencies' historical conservatism with airlines post-COVID and the guide cut complication. Q3 2026 results (October release) would be the critical data point — clean execution there could unlock an H2 2026 upgrade; disappointment pushes to 2027.

Positive: Q1 metric hit, unsecured access. Negative: guide cut, short window. Three agencies gives multiple shots but any one upgrading by YE 2026 requires all signals aligning. Modestly below 50%.

Bond market validation ($2B unsecured raise) is strong. Leverage at target 9 months early. S&P has shown willingness to upgrade UAL. H2 2026 upgrade plausible. 50% reflects even-odds call.

Agency caution after guide cut, combined with historical tendency to want 2-3 clean quarters, suggests upgrade more likely Q1 2027 than Q4 2026. But Q1 achievement and unsecured raise could accelerate. Modestly below 50%.