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1,018 km · Domestic

Nashville (BNA) – Buffalo Niagara (BUF)

In July 2026, 62 flights operated between Nashville and Buffalo Niagara (both directions), and 48.4% 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
January1860▲ 233.3%
February3456▲ 64.7%
March5862▲ 6.9%
April5960▲ 1.7%
May62620.0%
June60600.0%
July62620.0%
August62––
September60––
October62–in progress
November64––
December64––
Year to date (Jan–Jul)353422▲ 19.5%

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
January72.2%86.7%▲ 20.1%
February82.4%71.4%▼ 13.3%
March82.8%67.7%▼ 18.2%
April83.1%83.3%▲ 0.2%
May80.6%74.2%▼ 7.9%
June68.3%58.3%▼ 14.6%
July71.0%48.4%▼ 31.8%
August85.5%––
September91.7%––
October72.6%–in progress
November81.3%––
December81.3%––
Year-to-date average (Jan–Jul)77.2%70.0%▼ 9.3%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January04–
February00–
March00–
April10▼ 100.0%
May00–
June00–
July00–
August0––
September0––
October0–in progress
November0––
December2––
Year to date (Jan–Jul)14▲ 300.0%

By direction

BNA → BUF

Scheduled flights
602
Flights operated
598
Cancelled
4 · 0.7%
On-time departures
72.6%

BUF → BNA

Scheduled flights
601
Flights operated
598
Cancelled
3 · 0.5%
On-time departures
80.6%

BNA → BUF and BUF → BNA counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 1,203 100.0% 76.6% 7

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 31, 2026

Lowest average delay12:00–13:008.4min · 233 recorded · 232 measured
Gap to highest-delay hour7.7min12:00 ↔ 13:00
Recorded flights1,203BNA–BUF

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 · 5 recorded · 5 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 32 recorded · 32 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 57 recorded · 56 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 200 recorded · 198 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 142 recorded · 140 measured · Source: the US BTS 12:00 · 81.5% · 233 recorded · 232 measured · Source: the US BTS 13:00 · 72.0% · 219 recorded · 218 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 135 recorded · 135 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 93 recorded · 93 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 72 recorded · 72 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 10 recorded · 10 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 · 5 recorded · 5 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 32 recorded · 32 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 57 recorded · 56 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 200 recorded · 198 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 142 recorded · 140 measured · Source: the US BTS 12:00 · 8.4 min · 233 recorded · 232 measured · Source: the US BTS 13:00 · 16.1 min · 219 recorded · 218 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 135 recorded · 135 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 93 recorded · 93 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 72 recorded · 72 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 10 recorded · 10 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 · 5 · 5 recorded · 5 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 32 · 32 recorded · 32 measured · Source: the US BTS 09:00 · 57 · 57 recorded · 56 measured · Source: the US BTS 10:00 · 200 · 200 recorded · 198 measured · Source: the US BTS 11:00 · 142 · 142 recorded · 140 measured · Source: the US BTS 12:00 · 233 · 233 recorded · 232 measured · Source: the US BTS 13:00 · 219 · 219 recorded · 218 measured · Source: the US BTS 14:00 · 135 · 135 recorded · 135 measured · Source: the US BTS 15:00 · 93 · 93 recorded · 93 measured · Source: the US BTS 16:00 · 72 · 72 recorded · 72 measured · Source: the US BTS 17:00 · 5 · 5 recorded · 5 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · 10 · 10 recorded · 10 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—55
06:00No observations———
07:00No observations———
08:00Fewer than 200 measured departures—3232
09:00Fewer than 200 measured departures—5657
10:00Fewer than 200 measured departures—198200
11:00Fewer than 200 measured departures—140142
12:0081.5%8.4 min232233
13:0072.0%16.1 min218219
14:00Fewer than 200 measured departures—135135
15:00Fewer than 200 measured departures—9393
16:00Fewer than 200 measured departures—7272
17:00Fewer than 200 measured departures—55
18:00No observations———
19:00No observations———
20:00Fewer than 200 measured departures—1010
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 174 · 174 recorded · 172 measured · Source: the US BTS Tuesday · 156 · 156 recorded · 156 measured · Source: the US BTS Wednesday · 154 · 154 recorded · 154 measured · Source: the US BTS Thursday · 176 · 176 recorded · 175 measured · Source: the US BTS Friday · 179 · 179 recorded · 179 measured · Source: the US BTS Saturday · 180 · 180 recorded · 178 measured · Source: the US BTS Sunday · 184 · 184 recorded · 182 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
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—172174
TuesdayFewer than 200 measured departures—156156
WednesdayFewer than 200 measured departures—154154
ThursdayFewer than 200 measured departures—175176
FridayFewer than 200 measured departures—179179
SaturdayFewer than 200 measured departures—178180
SundayFewer than 200 measured departures—182184

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 · 82 · 82 recorded · 78 measured · Source: the US BTS Feb · 90 · 90 recorded · 90 measured · Source: the US BTS Mar · 120 · 120 recorded · 120 measured · Source: the US BTS Apr · 120 · 120 recorded · 119 measured · Source: the US BTS May · 124 · 124 recorded · 124 measured · Source: the US BTS Jun · 120 · 120 recorded · 120 measured · Source: the US BTS Jul · 124 · 124 recorded · 124 measured · Source: the US BTS Aug · 62 · 62 recorded · 62 measured · Source: the US BTS Sep · 60 · 60 recorded · 60 measured · Source: the US BTS Oct · 102 · 102 recorded · 102 measured · Source: the US BTS Nov · 102 · 102 recorded · 102 measured · Source: the US BTS Dec · 97 · 97 recorded · 95 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—7882
FebFewer than 200 measured departures—9090
MarFewer than 200 measured departures—120120
AprFewer than 200 measured departures—119120
MayFewer than 200 measured departures—124124
JunFewer than 200 measured departures—120120
JulFewer than 200 measured departures—124124
AugFewer than 200 measured departures—6262
SepFewer than 200 measured departures—6060
OctFewer than 200 measured departures—102102
NovFewer than 200 measured departures—102102
DecFewer than 200 measured departures—9597

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 76.1% 916
  • Delayed >15 min 23.3% 280
  • Cancelled 0.6% 7
  • 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

14
14 of 14
Flight numbersBy direction DeparturesOn time
WN936 BUF → BNA 60 71.7%
WN863 BUF → BNA 58 89.7%
WN909 BUF → BNA 58 98.3%
WN4728 BNA → BUF 57 29.8%
WN1446 BUF → BNA 54 79.3%
WN2144 BNA → BUF 50 58.0%
WN1142 BNA → BUF 46 84.8%
WN939 BNA → BUF 39 92.3%
WN2382 BNA → BUF 36 44.4%
WN2516 BUF → BNA 34 82.4%
WN668 BUF → BNA 34 70.6%
WN1268 BNA → BUF 33 84.4%
WN4314 BNA → BUF 33 78.8%
WN705 BUF → BNA 30 67.9%

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 62 +0.0% 0 48.4%
June 2026 60 +0.0% 0 58.3%
May 2026 62 +0.0% 0 74.2%
April 2026 60 +1.7% 0 83.3%
March 2026 62 +6.9% 0 67.7%
February 2026 56 +64.7% 0 71.4%
January 2026 60 +233.3% 4 86.7%
December 2025 64 +106.5% 2 81.3%
November 2025 64 +68.4% 0 81.3%
October 2025 62 +55.0% 0 72.6%
September 2025 60 0 91.7%
August 2025 62 0 85.5%
July 2025 62 0 71.0%
June 2025 60 0 68.3%
May 2025 62 0 80.6%
April 2025 59 1 83.1%
March 2025 58 0 82.8%
February 2025 34 0 82.4%
January 2025 18 0 72.2%
December 2024 31 0 77.4%
November 2024 38 0 84.2%
October 2024 40 0 87.5%

How to read this chart

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