PDX to BOS flight delays & on-time performance
Nonstop flights from Portland International Airport to Boston Logan International Airport · 2,537 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PDX or BOS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Portland (PDX) to Boston (BOS) arrived on time 79% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.3% were cancelled, and 4% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (81% on time); JetBlue was the least (70%).
- Departures scheduled around 7am did best (84% on time); around 8am did worst (64%).
- Sunday was the most reliable day to fly (83% on time) and Tuesday the least (69%).
- The largest source of delay minutes was air traffic control & airport congestion (36%).
Which airline is most on time from PDX to BOS?
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 | 81% | 0.8% | 8 min | 2.3% | 533 |
| JetBlue | 70% | 3.6% | 31 min | 11.3% | 138 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am84%321 flights
- 8am64%28 flights
- 12pm74%19 flights
- 2pm72%72 flights
- 9pm79%184 flights
- 11pm65%47 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday81%3.8% cancelled
- Tuesday69%0.0% cancelled
- Wednesday80%1.1% cancelled
- Thursday76%1.0% cancelled
- Friday82%0.9% cancelled
- Saturday78%1.3% cancelled
- Sunday83%0.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion36%
- Airline (crew, maintenance, cleaning, fueling)36%
- Late-arriving aircraft28%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather56%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion11%
- Security0%
PDX to BOS: common questions
- How often are PDX to BOS flights on time?
- 79% 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 Portland to Boston cancelled?
- 1.3% of scheduled flights were cancelled (9 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 4.1% of flights were an hour or more late.
- How long is taxi time at PDX?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BOS to PDX — 78% on time
More flights from Portland
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PDX → BOS, nonstop flights by US airlines that report to the DOT. How we calculate this.