Route
ORD → PWM
Chicago O'Hare International Airport Portland International Jetport
How punctual is this route?
- On-time arrivals
- 74.4%
- Less than 15 minutes late
- Cancelled
- 2.6%
- Of scheduled flights
- Average delay when late
- 75 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,493
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 19%
- Extreme weather 11%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 79.4% | 165 |
| October 2025 | 75.3% | 166 |
| November 2025 | 72.9% | 90 |
| December 2025 | 60.7% | 62 |
| January 2026 | 60.6% | 35 |
| February 2026 | 86.2% | 62 |
| March 2026 | 64.9% | 117 |
| April 2026 | 76.2% | 149 |
| May 2026 | 80.6% | 166 |
| June 2026 | 76.4% | 150 |
| July 2026 | 72.8% | 155 |
| August 2026 | 71.3% | 176 |
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 |
|---|---|---|---|---|
| Republic Airways | 609 | 75.6% | 3.1% | 75 min |
| United Airlines | 430 | 72.5% | 0.9% | 73 min |
| SkyWest Airlines | 254 | 69.0% | 3.5% | 74 min |
| Envoy Air | 196 | 82.0% | 3.6% | 76 min |
| American Airlines | 4 | 75.0% | 0.0% | 454 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
YX4403
37% late · 135 flights
-
UA1401
40% late · 103 flights
-
UA2804
20% late · 103 flights
-
UA763
14% late · 92 flights
-
YX4741
8% late · 89 flights
-
YX4774
14% late · 76 flights
-
MQ3474
14% late · 74 flights
-
UA1974
20% late · 55 flights
-
YX4488
13% late · 52 flights
-
MQ3336
20% late · 44 flights
-
OO5849
14% late · 42 flights
-
OO5563
38% late · 36 flights
-
YX3507
25% late · 34 flights
-
UA2126
42% late · 32 flights
-
OO6218
39% late · 31 flights
-
MQ3564
36% late · 30 flights
-
OO5975
36% late · 29 flights
-
YX3643
17% late · 29 flights
-
YX4504
50% late · 29 flights
-
YX3432
24% late · 27 flights
-
OO4967
35% late · 26 flights
-
MQ3644
13% late · 24 flights
-
MQ3869
12% late · 24 flights
-
OO5783
60% late · 23 flights
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