Route
SFO → ORD
San Francisco International Airport Chicago O'Hare International Airport
Alerts at SFO and ORD
How punctual is this route?
- On-time arrivals
- 75.0%
- Less than 15 minutes late
- Cancelled
- 1.0%
- Of scheduled flights
- Average delay when late
- 89 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5,650
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 39%
- Airline (crew, maintenance, cleaning) 32%
- Air traffic control & airport 26%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 84.1% | 486 |
| October 2025 | 81.4% | 524 |
| November 2025 | 78.1% | 411 |
| December 2025 | 80.4% | 391 |
| January 2026 | 72.8% | 329 |
| February 2026 | 85.2% | 357 |
| March 2026 | 76.1% | 461 |
| April 2026 | 72.1% | 523 |
| May 2026 | 73.2% | 559 |
| June 2026 | 70.4% | 530 |
| July 2026 | 65.8% | 523 |
| August 2026 | 66.2% | 556 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 3,885 | 76.6% | 0.7% | 74 min |
| American Airlines | 1,765 | 71.6% | 1.6% | 116 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
AA2614
9% late · 364 flights
-
UA2091
8% late · 340 flights
-
UA1482
21% late · 274 flights
-
UA1568
17% late · 220 flights
-
UA2278
17% late · 201 flights
-
UA1954
31% late · 196 flights
-
AA2113
36% late · 149 flights
-
UA1557
34% late · 111 flights
-
UA1777
56% late · 106 flights
-
UA2097
17% late · 104 flights
-
AA2418
50% late · 103 flights
-
UA2317
54% late · 103 flights
-
UA368
12% late · 103 flights
-
UA2056
14% late · 98 flights
-
AA3250
19% late · 89 flights
-
UA1448
5% late · 83 flights
-
UA2000
7% late · 77 flights
-
AA2537
30% late · 76 flights
-
AA2543
27% late · 76 flights
-
AA2550
66% late · 76 flights
-
AA2554
27% late · 76 flights
-
AA359
23% late · 76 flights
-
AA2761
16% late · 75 flights
-
AA1253
37% late · 74 flights
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