LAX to ORD flight delays & on-time performance
Nonstop flights from Los Angeles International Airport to Chicago O'Hare International Airport · 1,744 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LAX or ORD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Los Angeles (LAX) to Chicago (ORD) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.5% were cancelled, and 9% arrived an hour or more late.
- United Airlines was the most punctual airline here (80% on time); American Airlines was the least (73%).
- Departures scheduled around 6am did best (92% on time); around 2pm did worst (63%).
- Tuesday was the most reliable day to fly (81% on time) and Sunday the least (72%).
- The largest source of delay minutes was late-arriving aircraft (42%).
Which airline is most on time from LAX 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 | 80% | 0.7% | 15 min | 6.3% | 3,388 |
| Spirit Airlines | 78% | 4.2% | 19 min | 8.3% | 189 |
| American Airlines | 73% | 2.0% | 27 min | 12.2% | 3,061 |
| Delta Air Lines | 72% | 0.0% | 21 min | 11.0% | 151 |
| Frontier Airlines | 61% | 5.1% | 57 min | 18.8% | 236 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 12am79%443 flights
- 1am84%113 flights
- 5am95%92 flights
- 6am92%504 flights
- 7am89%516 flights
- 8am84%576 flights
- 9am78%238 flights
- 10am70%702 flights
- 11am67%371 flights
- 12pm64%488 flights
- 1pm62%160 flights
- 2pm63%436 flights
- 3pm65%274 flights
- 4pm80%247 flights
- 5pm74%465 flights
- 6pm77%319 flights
- 10pm85%283 flights
- 11pm76%778 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%1.8% cancelled
- Tuesday81%0.7% cancelled
- Wednesday78%1.4% cancelled
- Thursday79%1.3% cancelled
- Friday77%1.9% cancelled
- Saturday74%1.7% cancelled
- Sunday72%1.7% 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 aircraft42%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion26%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather60%
- Airline (crew, maintenance, cleaning, fueling)28%
- Air traffic control & airport congestion11%
- Security0%
LAX to ORD: common questions
- How often are LAX to ORD flights on time?
- 76% 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 Los Angeles to Chicago cancelled?
- 1.5% of scheduled flights were cancelled (106 of 7,025).
- How long are typical delays?
- Across all flights the average arrival delay was 21 min (early arrivals count as zero). Flights that were late arrived 86 min behind schedule on average, and 9.4% of flights were an hour or more late.
- How long is taxi time at LAX?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ORD to LAX — 73% on time
More flights from Los Angeles
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LAX → ORD, nonstop flights by US airlines that report to the DOT. How we calculate this.