BOS to PDX flight delays
Boston, MA (BOS) Portland, OR (PDX) · 2,537 miles
649 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
75.82%
Arrived on time
Within 15 minutes of schedule
1.08%
Cancelled
Share of scheduled flights
57 min
When late, late by
Average across delayed arrivals
15 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. Alaska Airlines arrived on time 12.9 points more often than JetBlue Airways over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The season swings this route hard. In August it ran 42.5 points more punctual than in March — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Flights from Boston to Portland run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, Alaska Airlines arrived on time most often on BOS to PDX. JetBlue Airways was late most often. Flights ran closest to schedule in August and worst in March.
Every airline on BOS to PDX
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Alaska Airlines | 533 | 78.14% | 1.13% | 50 min | C |
| JetBlue Airways | 116 | 65.22% | 0.86% | 76 min | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
PDX to BOS Portland back to Boston 78.97% on time COther routes from Boston
Common questions
Are flights from Boston to Portland usually delayed?
75.82% of flights on the BOS to PDX route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Boston to Portland?
Alaska Airlines, at 78.14% on time across 533 flights. The least punctual on the route was JetBlue Airways at 65.22%.
How often are BOS to PDX flights cancelled?
1.08% of scheduled flights did not operate — about 11 in every thousand. That is in the normal range.
What is the best month to fly Boston to Portland?
August, when 89.7% of flights arrived on time. The worst was March at 47.2%.
When BOS to PDX flights are late, how late are they?
About 57 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on BOS to PDX during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →