Route · BOS → PHX · 2020–2025 BTS data
Boston to Phoenix
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BOS to PHX (Boston to Phoenix) ranks #1173 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 81.4%
- On-time
- +2.4 pts
- vs US avg
- 79 min
- Delay when late
- 9,928
- Flights
- #1173 of 4927
- Corpus placement
Cancelled
0.5%
Best Month
Feb 2024 92%
Worst Month
Jun 2024 59%
Distance
2,300 mi
Carriers
9
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 179 | 54 | 1 | 0 | B6,DL,AA |
| Nov 2025 | 158 | 32 | 2 | 0 | AA,B6,DL |
| Oct 2025 | 166 | 44 | 0 | 1 | AA,B6,DL |
| Sep 2025 | 132 | 31 | 1 | 2 | DL,AA |
| Aug 2025 | 137 | 24 | 0 | 2 | AA,DL |
| Jul 2025 | 160 | 49 | 5 | 0 | AA,B6,DL |
| Jun 2025 | 179 | 44 | 2 | 0 | AA,B6,DL |
| May 2025 | 183 | 43 | 0 | 1 | AA,B6,DL |
| Apr 2025 | 187 | 44 | 0 | 1 | DL,AA,B6 |
| Mar 2025 | 212 | 28 | 0 | 0 | AA,B6,DL |
| Feb 2025 | 184 | 64 | 1 | 0 | AA,B6,DL |
| Jan 2025 | 198 | 34 | 0 | 1 | AA,B6,DL |
| Dec 2024 | 209 | 34 | 2 | 1 | AA,B6,DL |
| Nov 2024 | 191 | 33 | 0 | 1 | B6,DL,AA |
| Oct 2024 | 184 | 21 | 0 | 0 | DL,B6,AA |
| Sep 2024 | 167 | 19 | 0 | 0 | AA,B6,DL |
| Aug 2024 | 172 | 48 | 1 | 1 | AA,B6,DL |
| Jul 2024 | 159 | 43 | 5 | 3 | AA,B6,DL |
| Jun 2024 | 158 | 65 | 0 | 0 | AA,B6,DL |
| May 2024 | 186 | 47 | 0 | 0 | AA,B6,DL |
| Apr 2024 | 177 | 34 | 0 | 1 | AA,B6,DL |
| Mar 2024 | 194 | 27 | 0 | 0 | AA,B6,DL |
| Feb 2024 | 172 | 14 | 0 | 0 | AA,B6,DL |
| Jan 2024 | 181 | 29 | 1 | 0 | AA,B6,DL |
BOS–PHX seasonal on-time pattern
Best: September (85.9%) · weakest: June (75.4%)
Strongest calendar month
September
85.9% on-time · ~130 flights/mo
Busiest calendar month
March
~153 flights/mo avg
Weakest calendar month
June
75.4% on-time · ~134 flights/mo
Cancellation Rate
0.5%
21 of 4,225 flights
Diversion Rate
0.4%
15 of 4,225 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 profilePHX - Phoenix
Full on-time, delay-cause, and seasonal performance for Phoenix, AZ.
PHX on-time profileCompare the two airports
See BOS and PHX side by side on delays, cancellations, and reliability.
Compare BOS vs PHXOrigin-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: Phoenix · fleet on-time rank #2568 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to BOS–PHX.
Routes with a similar on-time rate
What the Data Says About BOS to PHX
9,928 tracked flights put the BOS to PHX pairing (Boston to Phoenix) at a 81.4% on-time rate, squarely in line with the wider network. Delays that do occur run 79.1 minutes on average. Across the 2,300-mile route and its 9 carriers, the trailing 24 months show 0.5% cancelled and 0.4% diverted (4,225 flights sampled).
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 92% on-time, while Jun 2024 came in at just 59% - a 33-point swing worth factoring into travel timing.
On the multi-year calendar, BOS–PHX peaks in September at 85.9% on-time while March carries the heaviest traffic (~153 flights per month) ; the softest month is June at 75.4%, a 10.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does BOS to PHX rank among US routes by traffic? ▼
How often are flights delayed from BOS to PHX? ▼
What is the cancellation rate for BOS to PHX? ▼
How far is the flight from BOS to PHX? ▼
When is the best time to fly from BOS to PHX? ▼
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–PHX data
BOS–PHX is mid-pack at 81.4% on-time; month and carrier mix move more than the corridor headline.
- Compare BOS and PHX airport profiles: delay causes and top routes differ even on the same corridor. BOS airport
- If your dates flex, September (85.9% on-time) beats June (75.4%) on this corridor. Seasonal chart
- 4 other routes post a similar 81.4% 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.