Route
ORD → PDX
Chicago O'Hare International Airport Portland International Airport
How punctual is this route?
- On-time arrivals
- 67.6%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 72 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,811
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 50%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 19%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 85.2% | 257 |
| October 2025 | 67.4% | 262 |
| November 2025 | 70.0% | 174 |
| December 2025 | 56.4% | 164 |
| January 2026 | 73.0% | 139 |
| February 2026 | 70.1% | 147 |
| March 2026 | 59.7% | 181 |
| April 2026 | 63.3% | 242 |
| May 2026 | 73.1% | 284 |
| June 2026 | 63.7% | 321 |
| July 2026 | 67.3% | 339 |
| August 2026 | 61.1% | 301 |
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 | 1,414 | 71.8% | 0.6% | 68 min |
| American Airlines | 899 | 59.3% | 1.1% | 80 min |
| Alaska Airlines | 498 | 70.7% | 1.2% | 65 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
AS325
31% late · 351 flights
-
UA1994
16% late · 344 flights
-
AS413
26% late · 145 flights
-
UA2059
38% late · 143 flights
-
AA2977
54% late · 138 flights
-
UA1554
24% late · 125 flights
-
AA2545
34% late · 106 flights
-
UA2300
15% late · 103 flights
-
UA1531
38% late · 82 flights
-
UA1677
42% late · 82 flights
-
AA1317
46% late · 76 flights
-
AA2284
21% late · 76 flights
-
AA563
33% late · 62 flights
-
UA2850
21% late · 58 flights
-
UA2817
28% late · 47 flights
-
AA820
31% late · 46 flights
-
UA2738
37% late · 46 flights
-
AA1229
75% late · 44 flights
-
AA2511
39% late · 44 flights
-
AA3099
36% late · 44 flights
-
UA2207
31% late · 36 flights
-
AA3320
11% late · 35 flights
-
UA1525
31% late · 35 flights
-
UA630
31% late · 35 flights
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