Which airline has the lowest cancellation rate?
Southwest Airlines had the lowest cancellation rate among major US carriers in 2024–2025 at 0.84%, based on BTS data covering 14,080,680 domestic flights. Delta Air Lines was second-lowest at 1.00%.
Which airline cancels the most flights?
Frontier Airlines had the highest cancellation rate among major US carriers in 2024–2025 at 2.05%, followed by Spirit Airlines at 1.74% and American Airlines at 1.68%. Note: Spirit Airlines ceased all operations on May 2, 2026.
What is the average US domestic flight cancellation rate?
The US domestic average cancellation rate was approximately 1.41% in 2024–2025, based on BTS data covering 14,080,680 scheduled flights and 199,191 cancellations. In practical terms, roughly 1 in 71 US domestic flights does not operate as scheduled.
How can I predict if my flight will be cancelled?
DelayGuard shows a historical cancellation rate alongside every delay prediction — resolved at route × airline × departure month for the most accurate baseline. Enter your flight details on the predictor and the result card shows both your delay probability and the historical cancellation rate for that specific route and airline. High-cancellation periods (winter storms, peak convective season) are reflected in the monthly breakdown.
What flights are most likely to get cancelled?
Flights most likely to be cancelled share several traits: they operate at high-cancellation airports (LGA at 2.67%, EWR at 2.52%, DFW at 2.31% in BTS 2024–2025 data), they fly on high-cancellation airlines (Frontier 2.05%, American 1.68%), they depart during winter months or peak convective storm season (June–August), and they are the last flight of the day on a route. Short, thin routes with low frequency are also more vulnerable — a single mechanical event can strand passengers with no recovery option for 24+ hours.
How likely is my flight to be cancelled?
The US domestic average is 1.41% — roughly 1 in 71 flights. Your specific probability depends on airline, route, and month. The airline matters: across 2024–2025, Delta cancelled 1.00% of its scheduled flights and Frontier 2.05%. Delta ATL to LAX specifically cancelled 0.70% of 7,871 scheduled flights. DelayGuard shows the historical rate for your exact route and airline on every prediction result.
Is Spirit Airlines still flying?
No. Spirit Airlines ceased all operations on May 2, 2026, following its bankruptcy filing. Its historical cancellation rate (1.74% in 2024–2025) is included in this index for reference. Passengers on former Spirit routes should check Frontier, Southwest, or other carriers that have absorbed many of its city pairs.