A major winter storm pushing blizzard conditions across the U.S. Northeast is forcing widespread flight cancellations at airports that many Costa Rica travelers use for connections, increasing the likelihood of delays and last-minute rebookings for trips to and from San José and Liberia this week.
Flight-tracking data showed 3,076 flight cancellations and 11,299 delays across the U.S. system, with the heaviest disruption centered on the Northeast corridor. Blizzard warnings extend from parts of the Mid-Atlantic into New England, with forecasters calling for heavy snow, strong winds, and dangerous travel conditions from Sunday into Monday. New York City is under its first blizzard warning in years, and Boston and other major population centers are also bracing for significant impacts.
For Costa Rica travelers, the problem is not just the weather in the United States. It is the way airline networks work. When airlines shut down or sharply reduce operations at major hubs, aircraft and crews end up out of position. That can quickly ripple into routes that appear far from the storm, including flights to Juan Santamaría International Airport (SJO) and Daniel Oduber Quirós International Airport (LIR).
The highest-risk itineraries are those that connect through the Northeast’s biggest gateways, including New York (JFK/LGA), Newark (EWR), Boston (BOS), and Philadelphia (PHL). Those airports handle a large share of connections for international travelers and are common routing points for Costa Rica passengers heading onward within the United States or to Europe.
Airlines have already moved into disruption mode, issuing travel advisories and change-fee waivers tied to affected dates and airports. These waivers typically let passengers shift travel to a new date within a defined window without paying the usual change penalty, and in some cases reduce or waive fare differences under specific conditions.
For travelers with imminent departures, the key decision is whether to wait for a cancellation or act early. When cancellations stack up, rebooking options disappear fast, especially on the same day. Many passengers improve their odds by shifting to routes that connect through less-affected hubs farther south or west, if the airline offers them.
Travelers should also be clear-eyed about what assistance to expect if a disruption turns into an overnight delay in the United States. Weather is generally treated as an “uncontrollable” event, and amenities like hotels and meal vouchers are usually tied to delays the airline considers within its control. The U.S. Transportation Department’s dashboard focuses those commitments on controllable disruptions, not weather.
Refund rules are more straightforward. If an airline cancels a flight, or makes a significant schedule change or delay, and a passenger chooses not to travel, U.S. rules generally require a refund rather than forcing a voucher.
For Costa Rica residents and visitors traveling this week, the most practical steps are simple: keep airline app notifications on, check the status of the inbound aircraft operating your flight, and review your carrier’s current travel advisory if your itinerary touches the Northeast between Sunday and early week. With major hubs under pressure, even flights that depart on time from Costa Rica can be delayed if the aircraft or crew assigned to that route is stuck in the storm zone.
