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Route · PHX → BOS · 2020–2025 BTS data

Phoenix to Boston

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), PHX to BOS (Phoenix to Boston) ranks #1175 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

80.6%
On-time
+1.6 pts
vs US avg
80 min
Delay when late
9,925
Flights
#1175 of 4927
Corpus placement

Cancelled

0.5%

Best Month

Nov 2024 88%

Worst Month

Oct 2025 64%

Distance

2,300 mi

Carriers

9

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 179 31 2 0 DL,B6,AA
Nov 2025 158 42 2 1 AA,B6,DL
Oct 2025 166 60 0 0 AA,B6,DL
Sep 2025 132 36 1 0 DL,AA
Aug 2025 137 20 0 0 AA,DL
Jul 2025 160 44 4 1 AA,B6,DL
Jun 2025 180 41 2 0 AA,B6,DL
May 2025 183 45 0 0 AA,B6,DL
Apr 2025 187 37 0 0 DL,AA,B6
Mar 2025 212 44 0 0 AA,B6,DL
Feb 2025 184 43 2 0 AA,B6,DL
Jan 2025 198 28 0 0 AA,B6,DL
Dec 2024 209 36 2 0 AA,B6,DL
Nov 2024 190 23 0 0 B6,DL,AA
Oct 2024 184 27 0 0 DL,B6,AA
Sep 2024 167 22 0 0 AA,B6,DL
Aug 2024 172 52 1 3 AA,B6,DL
Jul 2024 159 55 6 0 AA,B6,DL
Jun 2024 157 49 0 1 AA,B6,DL
May 2024 186 39 0 1 AA,B6,DL
Apr 2024 177 33 0 0 AA,B6,DL
Mar 2024 194 44 0 0 AA,B6,DL
Feb 2024 172 30 0 0 AA,B6,DL
Jan 2024 181 30 1 0 AA,B6,DL

PHX–BOS seasonal on-time pattern

Best: January (86.2%) · weakest: July (73.6%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 82.3%

Strongest calendar month

January

86.2% on-time · ~139 flights/mo

Busiest calendar month

March

~154 flights/mo avg

Weakest calendar month

July

73.6% on-time · ~138 flights/mo

Cancellation Rate

0.5%

23 of 4,224 flights

Diversion Rate

0.2%

7 of 4,224 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

PHX - Phoenix

Full on-time, delay-cause, and seasonal performance for Phoenix, AZ.

PHX on-time profile

BOS - Boston

Full on-time, delay-cause, and seasonal performance for Boston, MA.

BOS on-time profile

Compare the two airports

See PHX and BOS side by side on delays, cancellations, and reliability.

Compare PHX vs BOS

Origin-hub reliability standing

Mid-pack among PHX departures

From PHX, this corridor sits with 71 other 75–85% on-time routes out of 97 tracked departures, not the hub's reliability leaders (25 at ≥85%) and not the softest ( 1 below 75%). Destination: Boston · fleet on-time rank #2895 of 4927.

What the Data Says About PHX to BOS

9,925 tracked flights put the PHX to BOS pairing (Phoenix to Boston) at a 80.6% on-time rate, squarely in line with the wider network. Delays that do occur run 80.1 minutes on average. Across the 2,300-mile route and its 9 carriers, the trailing 24 months show 0.5% cancelled and 0.2% diverted (4,224 flights sampled).

The monthly split is wide on this route: Nov 2024 posted the strongest performance at 88% on-time, while Oct 2025 came in at just 64% - a 24-point swing worth factoring into travel timing.

On the multi-year calendar, PHX–BOS peaks in January at 86.2% on-time while March carries the heaviest traffic (~154 flights per month) ; the softest month is July at 73.6%, a 12.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does PHX to BOS rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, PHX to BOS ranks #1175 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from PHX to BOS? ▼
Flights from Phoenix to Boston have a 80.6% on-time rate based on 9,925 flights. The average delay is 80.1 minutes. The best recent month was Nov 2024 with 88% on-time.
What is the cancellation rate for PHX to BOS? ▼
Over the last 24 months, 0.5% of flights on this route were cancelled (23 of 4,224 flights) and 0.2% were diverted.
How far is the flight from PHX to BOS? ▼
The flight distance from Phoenix (PHX) to Boston (BOS) is approximately 2,300 miles. This route is served by 9 carriers.
When is the best time to fly from PHX to BOS? ▼
The best recent month for on-time performance was Nov 2024 (88% on-time). The worst was Oct 2025 (64% on-time). Consider booking during months with historically better performance.

Airports on this route

PHX Airport

Phoenix
BOS Airport

Boston
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 PHX–BOS data

PHX–BOS is mid-pack at 80.6% on-time; month and carrier mix move more than the corridor headline.

  • Compare PHX and BOS airport profiles: delay causes and top routes differ even on the same corridor. PHX airport
  • If your dates flex, January (86.2% on-time) beats July (73.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 80.6% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.