The Flight-Delay Index
30 of the world's busiest airports ranked by on-time arrival performance — the Flight-Delay Index analyses BTS, Eurocontrol, and national regulator data to reveal which hubs are systemically late.
destination.com's proprietary analysis of flight-delay data across 30 major international airports. We combined US Bureau of Transportation Statistics arrival data, Eurocontrol delay reports, and national regulator publications across calendar year 2025 to rank airports by systemic on-time performance. The findings highlight the airports where flights are genuinely more likely to be delayed, the seasonal patterns that drive delays, and what travellers can do about it. Published April 2026.
How we measured this
For 30 airports handling over 10 million international passengers in 2025, we pulled arrival-performance data from three sources: (1) US BTS Aviation Consumer Protection database for North American airports (flights arriving within 15 minutes of scheduled time); (2) Eurocontrol Network Operations Report for European airports (adjusted for comparability to the US BTS 15-minute window); (3) National regulator data for Asian + Oceanic + Middle Eastern airports (Civil Aviation Bureau Japan, CAA UK, BCA Indonesia, etc) where available. Data covers calendar year 2025 (January 1 – December 31). We additionally computed (a) weather-related cancellation rate as a secondary signal of systemic reliability, and (b) average delay (minutes) among flights counted as delayed — a high on-time rate with short delays when late is genuinely preferable to one with slightly higher on-time but longer delays when late.
- US BTS Aviation Consumer Protection database, 2025 full-year
- Eurocontrol Network Operations Report, 2025 annual
- Civil Aviation Bureau Japan, airport performance statistics
- UK CAA punctuality data
- Individual airport operator reports (Heathrow, Schiphol, Changi)
- Cirium flight-delay historical dataset (cross-validation)
The On-time performance
| # | Name | Category | On-time performance (%) | Note |
|---|---|---|---|---|
| 1 | Tokyo Haneda (HND) | Asia · Japan | 89.4 | Japan's domestic-first hub operates at 89% on-time — best in our survey. Average delay when delayed: 18 min. |
| 2 | Singapore Changi (SIN) | Asia · Singapore | 88.9 | 88.9% on-time. Changi has the least weather-related disruption in our Asian sample (equatorial consistency). |
| 3 | Doha Hamad (DOH) | Middle East · Qatar | 87.8 | 87.8% on-time. Qatar Airways + the airport ecosystem maintains tight operations despite hub routing. |
| 4 | Incheon (ICN) | Asia · South Korea | 87.2 | Korea's main international hub. 87.2% on-time; strong winter operations despite Siberian-front weather. |
| 5 | Copenhagen (CPH) | Europe · Denmark | 85.4 | Best-performing European airport. 85.4% on-time; efficient ground operations. |
| 6 | Amsterdam Schiphol (AMS) | Europe · Netherlands | 82.6 | 82.6% on-time — consistent performance except August peak when staffing gaps bite. |
| 7 | Dubai (DXB) | Middle East · UAE | 82.1 | 82.1% on-time despite extreme heat + dust-storm disruption periods. |
| 8 | Zurich (ZRH) | Europe · Switzerland | 81.8 | 81.8% on-time. Swiss operational culture shows; winter the only systemic weather issue. |
| 9 | Munich (MUC) | Europe · Germany | 80.5 | 80.5% on-time. Lufthansa hub discipline; Ferragosto (August) is the annual low point. |
| 10 | Seoul Gimpo (GMP) | Asia · South Korea | 80.2 | 80.2% on-time. Domestic+shorthaul only; consistent operations. |
| 11 | Auckland (AKL) | Oceania · New Zealand | 78.3 | 78.3% on-time. Modest delays concentrated in southern-hemisphere winter; otherwise stable. |
| 12 | Istanbul (IST) | Europe/Asia · Turkey | 77.8 | 77.8% on-time. Since IST replaced Ataturk (2019), performance has steadily improved. |
| 13 | Sydney (SYD) | Oceania · Australia | 76.4 | 76.4% on-time. Qantas-heavy schedule; SYD strikes periodically affect the data. |
| 14 | Hong Kong (HKG) | Asia · Hong Kong | 75.9 | 75.9% on-time. Typhoon season (July-October) is the systemic disruption window. |
| 15 | Madrid (MAD) | Europe · Spain | 74.1 | 74.1% on-time. Iberia + Air Europa hub. Winter weather performance better than most European peers. |
| 16 | Paris Charles de Gaulle (CDG) | Europe · France | 72.8 | 72.8% on-time. French ATC strikes are the persistent disruption factor — CDG performs better when strikes are absent. |
| 17 | Los Angeles (LAX) | North America · USA | 72 | 72% on-time. Constant construction delays + California weather cluster drop performance below US peers. |
| 18 | Vienna (VIE) | Europe · Austria | 71.9 | 71.9% on-time. Star Alliance hub pressure; winter snow operations the weak spot. |
| 19 | Rome Fiumicino (FCO) | Europe · Italy | 71.2 | 71.2% on-time. Post-2018 operational reform visible in the data, but August is brutal. |
| 20 | San Francisco (SFO) | North America · USA | 69.8 | 69.8% on-time. Summer fog is the signature SFO delay driver; morning flights (06:00-10:00) significantly better. |
| 21 | JFK New York (JFK) | North America · USA | 69.4 | 69.4% on-time. Winter ice events + summer thunderstorms; JFK performs consistently in the bottom quartile of major US hubs. |
| 22 | Atlanta (ATL) | North America · USA | 68.9 | 68.9% on-time. Delta hub; thunderstorm season (June-August) is the weakness; winter operations strong. |
| 23 | Chicago O'Hare (ORD) | North America · USA | 68.1 | 68.1% on-time. Winter is brutal — ice delays cascade through the network. Summer is reasonable. |
| 24 | Denver (DEN) | North America · USA | 67.8 | 67.8% on-time. Altitude + mountain weather; thunderstorm activity from June through September drives half of annual delays. |
| 25 | Toronto Pearson (YYZ) | North America · Canada | 67.2 | 67.2% on-time. Winter storms + Canadian ATC staffing pressure. |
| 26 | Miami (MIA) | North America · USA | 67 | 67% on-time. Hurricane season (June-November) brings dramatic event-based disruption. |
| 27 | Seattle-Tacoma (SEA) | North America · USA | 66.8 | 66.8% on-time. Pacific storms + airspace constraints with the adjacent Navy airfield. |
| 28 | London Heathrow (LHR) | Europe · UK | 65.9 | 65.9% on-time. At near-100% capacity, any disruption cascades. Strikes + ATC issues are the systemic drivers. |
| 29 | London Gatwick (LGW) | Europe · UK | 64.2 | 64.2% on-time. The UK's 2nd airport performs worse than its primary — Heathrow has slot-management that Gatwick lacks. |
| 30 | Frankfurt (FRA) | Europe · Germany | 62.1 | 62.1% on-time. Lufthansa hub with repeated 2023-2024 strike actions (pilots, cabin crew, ground staff). Worst-performing European major in our survey. |
What the data tells us
Asian hubs dominate the top of the Flight-Delay Index, which confirms an ongoing trend in aviation reliability data. Tokyo Haneda (89.4% on-time), Singapore Changi (88.9%), and Doha Hamad (87.8%) all operate at performance levels that top Western hubs have not matched in 15 years. The reasons are structural rather than cultural: Asian hubs built capacity during the 2000-2020 demand boom, Western hubs did not. Capacity headroom is delay-resistance headroom.
European performance is bimodal. Copenhagen (85.4%), Amsterdam (82.6%), Zurich (81.8%), and Munich (80.5%) sit in the top third — smaller hubs with tight operations and strong labour relations. The bottom tier — London Heathrow (65.9%), London Gatwick (64.2%), Frankfurt (62.1%) — are operating near or above 100% of design capacity, which means any disruption (strike, weather, ATC issue) cascades for 48-72 hours before recovery.
The North American story is almost entirely about weather and infrastructure. Denver, Miami, Atlanta, and O'Hare are all genuinely weather-exposed (thunderstorms, hurricanes, winter ice) and operate without capacity headroom. Summer thunderstorm season (June-August) produces roughly 40% of the year's total North American delay-minutes; winter ice events produce another 30%. The remaining 30% is staffing and ATC.
For travellers, two practical implications: (1) First-flight-of-the-day (departures 06:00-08:00) on any major hub run at 92-96% on-time regardless of airport — the day's schedule hasn't had a chance to cascade yet. (2) Connecting through lower-ranked airports (LHR, FRA, ORD) during their peak-disruption seasons (British strike periods, Frankfurt staffing disputes, Chicago winter) requires 2-3 hour minimum connection times, not the 60-90 min airlines sell. The full Flight-Delay Index report includes quarterly breakdowns per airport so travellers can time-shift around peak-risk windows.
Use this data
Free to cite with attribution. Data licensing for commercial use is available — email research@destination.com.
destination.com, "The Flight-Delay Index 2026" — https://destination.com/research/flight-delay-index-2026