GLA→EWR

United Airlines is the only carrier the DOT report shows on GLA to EWR, with 107 flights and an average of 111 passengers aboard each. A single-carrier route gives a delayed passenger no same-day alternative on the same ticket, which is worth knowing before booking a tight onward connection.

Flights are scheduled departures in the CAA file, operated plus cancelled; on time is within 15 minutes of the planned off-block time. The DOT count below includes the return direction and may differ.

The DOT's international report puts 60 flights on the pair in June 2026, the busiest month of the window, and 0 in April 2026, the thinnest. A summer-to-winter swing of that size means the winter schedule is a different operation: fewer frequencies, so a cancellation leaves a longer wait for the next seat.

Coming the other way, 78.5% of arrivals from Newark Liberty International into Glasgow reached the gate within 15 minutes of schedule, across 114 flights. 40% arrived more than 15 minutes early, which is normal for an eastbound crossing with the jet stream behind it and a schedule padded for the days it is not. 0.00% of those arrivals were three hours or more late, the figure that decides a compensation claim on the return trip, and 0.9% were cancelled.

EUROCONTROL's figures for Glasgow as a whole, every airline and every destination: 76.0% of departures and 76.7% of arrivals within 15 minutes of schedule from 1 January to 21 October 2026, with 94.3% of scheduled flights operated. The last seven days ran at 73.4% for departures, 3 points worse than the year so far. Air traffic flow management delay attributed to the airport averaged 0.0 minutes per arriving flight this year, 0.0 over the last week.

Every US route from Glasgow, and its full punctuality record

Newark Liberty International is scored on this site from the DOT's domestic data: 77.4% of its 122,267 domestic departures arrived on time over the last twelve months, with delayed flights running a little over an hour late, and 3.44% were cancelled. Those are domestic flights, not this route, but an arriving transatlantic flight shares the same runways, the same weather and the same ground delay programmes, so a bad day at EWR reaches a flight from GLA just as surely. The airport's own page has the hour-by-hour and month-by-month detail, and its live FAA status appears above when the FAA has something to say.

Newark Liberty International (EWR) delay statistics, hour by hour and month by month

Every flight that departs Glasgow falls under UK261, the retained version of the EU regulation, whichever airline flies it and wherever it lands. If it arrives at Newark Liberty International three hours or more late, or is cancelled with under 14 days' notice, and the cause was within the airline's control, each passenger is owed £520 (£260 if the airline got you there under four hours late), on top of rebooking and care. Weather, air traffic control restrictions and strikes outside the airline are the usual exemptions. The return flight from EWR is covered only when the carrier is UK or EU based. The sector is about 3,220 miles, 5,181 km, which puts it in the top distance band.

Delayed three hours or more? Check a claim with Compensair →

Booked blind, GLA to EWR is a A+ route by the departure record, and there is no carrier choice to make. Leave at least two hours for any onward connection at EWR: 3% of departures were an hour or more late, and immigration comes before the connecting flight.

• Glasgow (GLA): every US route
• Newark Liberty International (EWR) delay statistics
• LHR to EWR, from London6,322 flights
• CDG to EWR, from Paris2,140 flights
• LIS to EWR, from Lisbon2,069 flights
• DUB to EWR, from Dublin1,996 flights
• Every Europe-to-US route and airport

The departure record is the CAA's, measured at Glasgow; the arrival record for the return leg is also measured at Glasgow. Nothing here is measured at EWR, where the DOT keeps no record of international flights.