Route · BOS → PDX · 2020–2025 BTS data
Boston to Portland
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BOS to PDX (Boston to Portland) ranks #3616 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 76.3%
- On-time
- -2.7 pts
- vs US avg
- 68 min
- Delay when late
- 2,329
- Flights
- #3616 of 4927
- Corpus placement
Cancelled
0.9%
Best Month
Aug 2025 90%
Worst Month
Jun 2024 58%
Distance
2,537 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 39 | 17 | 1 | 0 | AS |
| Nov 2025 | 38 | 10 | 0 | 0 | AS |
| Oct 2025 | 48 | 11 | 2 | 0 | AS |
| Sep 2025 | 50 | 7 | 0 | 0 | AS,B6 |
| Aug 2025 | 87 | 9 | 0 | 0 | AS,B6 |
| Jul 2025 | 92 | 35 | 1 | 1 | AS,B6 |
| Jun 2025 | 90 | 18 | 0 | 0 | AS,B6 |
| May 2025 | 79 | 15 | 1 | 0 | AS,B6 |
| Apr 2025 | 31 | 3 | 0 | 0 | AS,B6 |
| Dec 2024 | 43 | 11 | 1 | 0 | AS |
| Nov 2024 | 36 | 6 | 0 | 0 | AS |
| Oct 2024 | 72 | 12 | 0 | 0 | AS,B6 |
| Sep 2024 | 77 | 14 | 0 | 0 | AS,B6 |
| Aug 2024 | 88 | 26 | 1 | 0 | AS,B6 |
| Jul 2024 | 93 | 31 | 0 | 1 | AS,B6 |
| Jun 2024 | 88 | 37 | 1 | 0 | AS,B6 |
| May 2024 | 76 | 18 | 3 | 0 | AS,B6 |
| Apr 2024 | 30 | 10 | 0 | 0 | AS |
| Dec 2023 | 31 | 5 | 0 | 0 | AS |
| Nov 2023 | 30 | 8 | 0 | 0 | AS |
| Oct 2023 | 59 | 11 | 1 | 2 | AS,B6 |
| Sep 2023 | 63 | 21 | 0 | 1 | AS,B6 |
| Aug 2023 | 84 | 20 | 1 | 1 | AS,B6 |
| Jul 2023 | 84 | 35 | 1 | 0 | AS,B6 |
BOS–PDX seasonal on-time pattern
Best: March (95.5%) · weakest: July (66.1%)
Strongest calendar month
March
95.5% on-time · ~44 flights/mo
Busiest calendar month
July
~77 flights/mo avg
Weakest calendar month
July
66.1% on-time · ~77 flights/mo
Cancellation Rate
0.9%
14 of 1,508 flights
Diversion Rate
0.4%
6 of 1,508 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
BOS on-time profilePDX - Portland
Full on-time, delay-cause, and seasonal performance for Portland, OR.
PDX on-time profileCompare the two airports
See BOS and PDX side by side on delays, cancellations, and reliability.
Compare BOS vs PDXOrigin-hub reliability standing
Mid-pack among BOS departures
From BOS, this corridor sits with 49 other 75–85% on-time routes out of 60 tracked departures, not the hub's reliability leaders (6 at ≥85%) and not the softest ( 5 below 75%). Destination: Portland · fleet on-time rank #4237 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to BOS–PDX.
Routes with a similar on-time rate
What the Data Says About BOS to PDX
The Boston to Portland corridor (BOS to PDX) posts a 76.3% on-time rate on the lower edge of the average band, based on 2,329 tracked flights. Late flights run 67.7 minutes behind on average. 3 carriers cover the 2,537-mile route; over the last 24 months, 14 of 1,508 flights were cancelled (0.9%) and 0.4% diverted.
The monthly split is wide on this route: Aug 2025 posted the strongest performance at 90% on-time, while Jun 2024 came in at just 58% - a 32-point swing worth factoring into travel timing.
On the multi-year calendar, BOS–PDX peaks in March at 95.5% on-time while July carries the heaviest traffic (~77 flights per month) ; the softest month is July at 66.1%, a 29.4-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does BOS to PDX rank among US routes by traffic? ▼
How often are flights delayed from BOS to PDX? ▼
What is the cancellation rate for BOS to PDX? ▼
How far is the flight from BOS to PDX? ▼
When is the best time to fly from BOS 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 BOS–PDX data
BOS–PDX is mid-pack at 76.3% on-time; month and carrier mix move more than the corridor headline.
- Compare BOS and PDX airport profiles: delay causes and top routes differ even on the same corridor. BOS airport
- If your dates flex, March (95.5% on-time) beats July (66.1%) on this corridor. Seasonal chart
- 4 other routes post a similar 76.3% 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.