SJU to ORD flight delays & on-time performance
Nonstop flights from Luis Munoz Marin International Airport to Chicago O'Hare International Airport · 2,072 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SJU or ORD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Juan (SJU) to Chicago (ORD) arrived on time 79% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.4% were cancelled, and 6% arrived an hour or more late.
- United Airlines was the most punctual airline here (81% on time); American Airlines was the least (76%).
- Departures scheduled around 7am did best (96% on time); around 3pm did worst (70%).
- Wednesday was the most reliable day to fly (82% on time) and Monday the least (73%).
- The largest source of delay minutes was late-arriving aircraft (38%).
Which airline is most on time from SJU to ORD?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 81% | 0.6% | 8 min | 3.1% | 665 |
| Spirit Airlines | 78% | 6.9% | 19 min | 9.1% | 261 |
| American Airlines | 76% | 2.1% | 26 min | 9.3% | 426 |
| Frontier Airlines | 61% | 4.8% | 41 min | 15.8% | 42 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 12am94%69 flights
- 1am74%34 flights
- 5am80%25 flights
- 6am86%85 flights
- 7am96%172 flights
- 8am94%125 flights
- 11am72%38 flights
- 12pm83%24 flights
- 1pm72%41 flights
- 2pm66%37 flights
- 3pm70%407 flights
- 4pm70%208 flights
- 7pm77%80 flights
- 8pm60%28 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%1.9% cancelled
- Tuesday75%3.0% cancelled
- Wednesday82%2.3% cancelled
- Thursday79%0.0% cancelled
- Friday80%1.4% cancelled
- Saturday82%3.9% cancelled
- Sunday79%4.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft38%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion21%
- Extreme weather7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather45%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion27%
- Security0%
SJU to ORD: common questions
- How often are SJU to ORD flights on time?
- 79% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from San Juan to Chicago cancelled?
- 2.4% of scheduled flights were cancelled (33 of 1,394).
- How long are typical delays?
- Across all flights the average arrival delay was 17 min (early arrivals count as zero). Flights that were late arrived 73 min behind schedule on average, and 6.4% of flights were an hour or more late.
- How long is taxi time at SJU?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ORD to SJU — 74% on time
More flights from San Juan
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SJU → ORD, nonstop flights by US airlines that report to the DOT. How we calculate this.