Aviation Data
EN
EnglishTiếng Việt

3,070 km · Domestic

Buffalo Niagara (BUF) – Phoenix Sky Harbor (PHX)

In July 2026, 6 flights operated between Buffalo Niagara and Phoenix Sky Harbor (both directions), and 50.0% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January6427▼ 57.8%
February6044▼ 26.7%
March714▼ 94.4%
April6812▼ 82.4%
May7020▼ 71.4%
June528▼ 84.6%
July546▼ 88.9%
August44––
September42––
October68–in progress
November60––
December60––
Year to date (Jan–Jul)439121▼ 72.4%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January71.9%81.5%▲ 13.4%
February78.3%77.3%▼ 1.3%
March73.2%75.0%▲ 2.5%
April76.5%91.7%▲ 19.9%
May74.3%85.0%▲ 14.4%
June65.4%50.0%▼ 23.5%
July46.3%50.0%▲ 8.0%
August72.7%––
September90.5%––
October76.5%–in progress
November66.7%––
December55.0%––
Year-to-date average (Jan–Jul)69.4%72.9%▲ 5.1%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January01–
February00–
March10▼ 100.0%
April00–
May00–
June00–
July00–
August0––
September0––
October0–in progress
November0––
December2––
Year to date (Jan–Jul)110.0%

By direction

BUF → PHX

Scheduled flights
507
Flights operated
505
Cancelled
2 · 0.4%
On-time departures
74.7%

PHX → BUF

Scheduled flights
507
Flights operated
505
Cancelled
2 · 0.4%
On-time departures
72.1%

BUF → PHX and PHX → BUF counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 1,014 100.0% 73.4% 4

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 25, 2026

Lowest average delay16:00–17:0015.4min · 215 recorded · 215 measured
Recorded flights1,014BUF–PHX

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 14 recorded · 14 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 49 recorded · 49 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 46 recorded · 46 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 78 recorded · 78 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 103 recorded · 102 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 69 recorded · 68 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 17 recorded · 17 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 39 recorded · 39 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 58 recorded · 58 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 165 recorded · 164 measured · Source: the US BTS 16:00 · 73.0% · 215 recorded · 215 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 95 recorded · 94 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 13 recorded · 13 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 48 recorded · 48 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 14 recorded · 14 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 49 recorded · 49 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 46 recorded · 46 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 78 recorded · 78 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 103 recorded · 102 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 69 recorded · 68 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 17 recorded · 17 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 39 recorded · 39 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 58 recorded · 58 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 165 recorded · 164 measured · Source: the US BTS 16:00 · 15.4 min · 215 recorded · 215 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 95 recorded · 94 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 13 recorded · 13 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 48 recorded · 48 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 14 · 14 recorded · 14 measured · Source: the US BTS 06:00 · 49 · 49 recorded · 49 measured · Source: the US BTS 07:00 · 46 · 46 recorded · 46 measured · Source: the US BTS 08:00 · 78 · 78 recorded · 78 measured · Source: the US BTS 09:00 · 103 · 103 recorded · 102 measured · Source: the US BTS 10:00 · 5 · 5 recorded · 5 measured · Source: the US BTS 11:00 · 69 · 69 recorded · 68 measured · Source: the US BTS 12:00 · 17 · 17 recorded · 17 measured · Source: the US BTS 13:00 · 39 · 39 recorded · 39 measured · Source: the US BTS 14:00 · 58 · 58 recorded · 58 measured · Source: the US BTS 15:00 · 165 · 165 recorded · 164 measured · Source: the US BTS 16:00 · 215 · 215 recorded · 215 measured · Source: the US BTS 17:00 · 95 · 95 recorded · 94 measured · Source: the US BTS 18:00 · 13 · 13 recorded · 13 measured · Source: the US BTS 19:00 · 48 · 48 recorded · 48 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—1414
06:00Fewer than 200 measured departures—4949
07:00Fewer than 200 measured departures—4646
08:00Fewer than 200 measured departures—7878
09:00Fewer than 200 measured departures—102103
10:00Fewer than 200 measured departures—55
11:00Fewer than 200 measured departures—6869
12:00Fewer than 200 measured departures—1717
13:00Fewer than 200 measured departures—3939
14:00Fewer than 200 measured departures—5858
15:00Fewer than 200 measured departures—164165
16:0073.0%15.4 min215215
17:00Fewer than 200 measured departures—9495
18:00Fewer than 200 measured departures—1313
19:00Fewer than 200 measured departures—4848
20:00No observations———
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · Fewer than 200 measured departures · 140 recorded · 138 measured · Source: the US BTS Tuesday · Fewer than 200 measured departures · 112 recorded · 112 measured · Source: the US BTS Wednesday · Fewer than 200 measured departures · 110 recorded · 110 measured · Source: the US BTS Thursday · Fewer than 200 measured departures · 134 recorded · 134 measured · Source: the US BTS Friday · Fewer than 200 measured departures · 138 recorded · 138 measured · Source: the US BTS Saturday · 80.2% · 242 recorded · 242 measured · Source: the US BTS Sunday · Fewer than 200 measured departures · 138 recorded · 136 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · Fewer than 200 measured departures · 140 recorded · 138 measured · Source: the US BTS Tuesday · Fewer than 200 measured departures · 112 recorded · 112 measured · Source: the US BTS Wednesday · Fewer than 200 measured departures · 110 recorded · 110 measured · Source: the US BTS Thursday · Fewer than 200 measured departures · 134 recorded · 134 measured · Source: the US BTS Friday · Fewer than 200 measured departures · 138 recorded · 138 measured · Source: the US BTS Saturday · 9.1 min · 242 recorded · 242 measured · Source: the US BTS Sunday · Fewer than 200 measured departures · 138 recorded · 136 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 140 · 140 recorded · 138 measured · Source: the US BTS Tuesday · 112 · 112 recorded · 112 measured · Source: the US BTS Wednesday · 110 · 110 recorded · 110 measured · Source: the US BTS Thursday · 134 · 134 recorded · 134 measured · Source: the US BTS Friday · 138 · 138 recorded · 138 measured · Source: the US BTS Saturday · 242 · 242 recorded · 242 measured · Source: the US BTS Sunday · 138 · 138 recorded · 136 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—138140
TuesdayFewer than 200 measured departures—112112
WednesdayFewer than 200 measured departures—110110
ThursdayFewer than 200 measured departures—134134
FridayFewer than 200 measured departures—138138
Saturday80.2%9.1 min242242
SundayFewer than 200 measured departures—136138

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 92 · 92 recorded · 91 measured · Source: the US BTS Feb · 104 · 104 recorded · 104 measured · Source: the US BTS Mar · 76 · 76 recorded · 75 measured · Source: the US BTS Apr · 80 · 80 recorded · 80 measured · Source: the US BTS May · 90 · 90 recorded · 90 measured · Source: the US BTS Jun · 60 · 60 recorded · 60 measured · Source: the US BTS Jul · 60 · 60 recorded · 60 measured · Source: the US BTS Aug · 44 · 44 recorded · 44 measured · Source: the US BTS Sep · 42 · 42 recorded · 42 measured · Source: the US BTS Oct · 114 · 114 recorded · 114 measured · Source: the US BTS Nov · 124 · 124 recorded · 124 measured · Source: the US BTS Dec · 128 · 128 recorded · 126 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—9192
FebFewer than 200 measured departures—104104
MarFewer than 200 measured departures—7576
AprFewer than 200 measured departures—8080
MayFewer than 200 measured departures—9090
JunFewer than 200 measured departures—6060
JulFewer than 200 measured departures—6060
AugFewer than 200 measured departures—4444
SepFewer than 200 measured departures—4242
OctFewer than 200 measured departures—114114
NovFewer than 200 measured departures—124124
DecFewer than 200 measured departures—126128

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 73.1% 741
  • Delayed >15 min 26.5% 269
  • Cancelled 0.4% 4
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

4
Flight numbersBy direction DeparturesOn time
WN3066 PHX → BUF 43 39.5%
WN4738 BUF → PHX 42 61.9%
WN1783 BUF → PHX 33 45.5%
WN1477 BUF → PHX 32 65.6%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 6 −88.9% 0 50.0%
June 2026 8 −84.6% 0 50.0%
May 2026 20 −71.4% 0 85.0%
April 2026 12 −82.4% 0 91.7%
March 2026 4 −94.4% 0 75.0%
February 2026 44 −26.7% 0 77.3%
January 2026 27 −57.8% 1 81.5%
December 2025 60 −9.1% 2 55.0%
November 2025 60 −6.3% 0 66.7%
October 2025 68 +47.8% 0 76.5%
September 2025 42 0 90.5%
August 2025 44 0 72.7%
July 2025 54 0 46.3%
June 2025 52 0 65.4%
May 2025 70 0 74.3%
April 2025 68 0 76.5%
March 2025 71 1 73.2%
February 2025 60 0 78.3%
January 2025 64 0 71.9%
December 2024 66 0 71.2%
November 2024 64 0 87.5%
October 2024 46 0 89.1%

How to read this chart

Loading the guide…