We're showing a recent accepted-fare record for this route. SERP Radio is still gathering enough recent fares to publish booking-window guidance without turning historical timing patterns into live fare advice.
The next upgrade happens when LGA to DCA clears with a fresh accepted snapshot, route-level provenance, and enough recent observations to support booking claims.
Until then, use the live route dossier for market context and the airport alert surface for any same-day operational shifts that could distort pricing.