BOS to PDX flight delays & on-time performance
Nonstop flights from Boston Logan International Airport to Portland International Airport · 2,537 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOS or PDX right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boston (BOS) to Portland (PDX) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 1.9% were cancelled, and 5% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (78% on time); JetBlue was the least (76%).
- Departures scheduled around 6am did best (91% on time); around 7pm did worst (59%).
- Wednesday was the most reliable day to fly (83% on time) and Friday the least (73%).
- The largest source of delay minutes was late-arriving aircraft (43%).
Which airline is most on time from BOS to PDX?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Alaska Airlines | 78% | 1.3% | 12 min | 4.8% | 533 |
| JetBlue | 76% | 4.3% | 19 min | 7.6% | 138 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am91%191 flights
- 8am100%19 flights
- 9am74%48 flights
- 10am88%24 flights
- 4pm68%120 flights
- 5pm72%219 flights
- 6pm64%14 flights
- 7pm59%36 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%4.7% cancelled
- Tuesday78%1.1% cancelled
- Wednesday83%2.5% cancelled
- Thursday74%1.0% cancelled
- Friday73%1.8% cancelled
- Saturday78%1.1% cancelled
- Sunday81%1.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft43%
- Air traffic control & airport congestion32%
- Airline (crew, maintenance, cleaning, fueling)21%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)46%
- Extreme weather46%
- Air traffic control & airport congestion8%
- Security0%
BOS to PDX: common questions
- How often are BOS to PDX flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Boston to Portland cancelled?
- 1.9% of scheduled flights were cancelled (13 of 671).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 56 min behind schedule on average, and 5.3% of flights were an hour or more late.
- How long is taxi time at BOS?
- Flights on this route spent 24 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PDX to BOS — 79% on time
More flights from Boston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOS → PDX, nonstop flights by US airlines that report to the DOT. How we calculate this.