Route · IAH → PDX · 2020–2025 BTS data
Houston to Portland
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAH to PDX (Houston to Portland) ranks #2663 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 81.3%
- On-time
- +2.3 pts
- vs US avg
- 72 min
- Delay when late
- 4,534
- Flights
- #2663 of 4927
- Corpus placement
Cancelled
1.0%
Best Month
Sep 2024 90%
Worst Month
May 2024 52%
Distance
1,825 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 105 | 18 | 0 | 0 | AS,UA |
| Nov 2025 | 90 | 18 | 0 | 0 | UA,AS |
| Oct 2025 | 118 | 28 | 1 | 1 | AS,UA |
| Sep 2025 | 96 | 15 | 0 | 0 | UA,AS |
| Aug 2025 | 111 | 15 | 1 | 0 | UA,AS |
| Jul 2025 | 123 | 22 | 3 | 0 | AS,UA |
| Jun 2025 | 120 | 39 | 2 | 1 | AS,UA |
| May 2025 | 87 | 15 | 0 | 0 | AS,UA |
| Apr 2025 | 60 | 12 | 0 | 0 | UA |
| Mar 2025 | 62 | 10 | 0 | 0 | UA |
| Feb 2025 | 56 | 10 | 0 | 0 | UA |
| Jan 2025 | 65 | 11 | 2 | 0 | UA |
| Dec 2024 | 71 | 16 | 1 | 0 | UA |
| Nov 2024 | 60 | 14 | 0 | 0 | UA |
| Oct 2024 | 88 | 12 | 0 | 0 | UA |
| Sep 2024 | 86 | 9 | 0 | 1 | UA |
| Aug 2024 | 91 | 16 | 0 | 0 | UA |
| Jul 2024 | 93 | 29 | 7 | 0 | UA |
| Jun 2024 | 90 | 28 | 0 | 0 | UA |
| May 2024 | 71 | 34 | 1 | 0 | UA |
| Apr 2024 | 60 | 11 | 0 | 0 | UA |
| Mar 2024 | 62 | 10 | 0 | 0 | UA |
| Feb 2024 | 58 | 10 | 0 | 0 | UA |
| Jan 2024 | 62 | 13 | 2 | 0 | UA |
IAH–PDX seasonal on-time pattern
Best: September (87.2%) · weakest: June (71.4%)
Strongest calendar month
September
87.2% on-time · ~75 flights/mo
Busiest calendar month
July
~93 flights/mo avg
Weakest calendar month
June
71.4% on-time · ~85 flights/mo
Cancellation Rate
1.0%
20 of 1,985 flights
Diversion Rate
0.2%
3 of 1,985 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
IAH on-time profilePDX - Portland
Full on-time, delay-cause, and seasonal performance for Portland, OR.
PDX on-time profileCompare the two airports
See IAH and PDX side by side on delays, cancellations, and reliability.
Compare IAH vs PDXOrigin-hub reliability standing
Mid-pack among IAH departures
From IAH, this corridor sits with 79 other 75–85% on-time routes out of 102 tracked departures, not the hub's reliability leaders (17 at ≥85%) and not the softest ( 6 below 75%). Destination: Portland · fleet on-time rank #2615 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to IAH–PDX.
Routes with a similar on-time rate
What the Data Says About IAH to PDX
4,534 tracked flights put the IAH to PDX pairing (Houston to Portland) at a 81.3% on-time rate, squarely in line with the wider network. Delays that do occur run 72.2 minutes on average. Across the 1,825-mile route and its 3 carriers, the trailing 24 months show 1.0% cancelled and 0.2% diverted (1,985 flights sampled).
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 90% on-time, while May 2024 came in at just 52% - a 37-point swing worth factoring into travel timing.
On the multi-year calendar, IAH–PDX peaks in September at 87.2% on-time while July carries the heaviest traffic (~93 flights per month) ; the softest month is June at 71.4%, a 15.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does IAH to PDX rank among US routes by traffic? ▼
How often are flights delayed from IAH to PDX? ▼
What is the cancellation rate for IAH to PDX? ▼
How far is the flight from IAH to PDX? ▼
When is the best time to fly from IAH to PDX? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using IAH–PDX data
IAH–PDX is mid-pack at 81.3% on-time; month and carrier mix move more than the corridor headline.
- Compare IAH and PDX airport profiles: delay causes and top routes differ even on the same corridor. IAH airport
- If your dates flex, September (87.2% on-time) beats June (71.4%) on this corridor. Seasonal chart
- 4 other routes post a similar 81.3% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.