Aviation Data
EN
EnglishTiếng Việt

1,265 km · Domestic

Baltimore/Washington International Thurgood Marshall (BWI) – Frederick W. Smith (MEM)

In July 2026, 54 flights operated between Baltimore/Washington International Thurgood Marshall and Frederick W. Smith (both directions), and 53.7% 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
January18180.0%
February3033▲ 10.0%
March4758▲ 23.4%
April5244▼ 15.4%
May5246▼ 11.5%
June6048▼ 20.0%
July6154▼ 11.5%
August44––
September42––
October52–in progress
November56––
December58––
Year to date (Jan–Jul)320301▼ 5.9%

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
January77.8%66.7%▼ 14.3%
February73.3%87.9%▲ 19.9%
March89.4%60.3%▼ 32.6%
April75.0%70.5%▼ 6.0%
May65.4%76.1%▲ 16.4%
June73.3%75.0%▲ 2.3%
July70.5%53.7%▼ 23.8%
August70.5%––
September81.0%––
October80.8%–in progress
November91.1%––
December67.2%––
Year-to-date average (Jan–Jul)75.0%70.0%▼ 6.6%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January02–
February03–
March10▼ 100.0%
April00–
May00–
June00–
July10▼ 100.0%
August0––
September0––
October0–in progress
November0––
December1––
Year to date (Jan–Jul)25▲ 150.0%

By direction

BWI → MEM

Scheduled flights
487
Flights operated
483
Cancelled
4 · 0.8%
On-time departures
75.6%

MEM → BWI

Scheduled flights
486
Flights operated
482
Cancelled
4 · 0.8%
On-time departures
71.6%

BWI → MEM and MEM → BWI counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 973 100.0% 73.6% 8

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 13, 2024 → Jul 31, 2026

Recorded flights973BWI–MEM

Departure hour

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 · 3 · 3 recorded · 2 measured · Source: the US BTS 06:00 · 13 · 13 recorded · 13 measured · Source: the US BTS 07:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 08:00 · 29 · 29 recorded · 29 measured · Source: the US BTS 09:00 · 61 · 61 recorded · 60 measured · Source: the US BTS 10:00 · 44 · 44 recorded · 44 measured · Source: the US BTS 11:00 · 27 · 27 recorded · 27 measured · Source: the US BTS 12:00 · 172 · 172 recorded · 171 measured · Source: the US BTS 13:00 · 165 · 165 recorded · 165 measured · Source: the US BTS 14:00 · 82 · 82 recorded · 82 measured · Source: the US BTS 15:00 · 87 · 87 recorded · 85 measured · Source: the US BTS 16:00 · 201 · 201 recorded · 199 measured · Source: the US BTS 17:00 · 48 · 48 recorded · 47 measured · Source: the US BTS 18:00 · 30 · 30 recorded · 30 measured · Source: the US BTS 19:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · 9 · 9 recorded · 9 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.

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
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—23
06:00Fewer than 200 measured departures—1313
07:00Fewer than 200 measured departures—11
08:00Fewer than 200 measured departures—2929
09:00Fewer than 200 measured departures—6061
10:00Fewer than 200 measured departures—4444
11:00Fewer than 200 measured departures—2727
12:00Fewer than 200 measured departures—171172
13:00Fewer than 200 measured departures—165165
14:00Fewer than 200 measured departures—8282
15:00Fewer than 200 measured departures—8587
16:00Fewer than 200 measured departures—199201
17:00Fewer than 200 measured departures—4748
18:00Fewer than 200 measured departures—3030
19:00Fewer than 200 measured departures—11
20:00No observations———
21:00Fewer than 200 measured departures—99
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 · 169 · 169 recorded · 167 measured · Source: the US BTS Tuesday · 98 · 98 recorded · 98 measured · Source: the US BTS Wednesday · 94 · 94 recorded · 94 measured · Source: the US BTS Thursday · 172 · 172 recorded · 172 measured · Source: the US BTS Friday · 172 · 172 recorded · 171 measured · Source: the US BTS Saturday · 70 · 70 recorded · 68 measured · Source: the US BTS Sunday · 198 · 198 recorded · 195 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—167169
TuesdayFewer than 200 measured departures—9898
WednesdayFewer than 200 measured departures—9494
ThursdayFewer than 200 measured departures—172172
FridayFewer than 200 measured departures—171172
SaturdayFewer than 200 measured departures—6870
SundayFewer than 200 measured departures—195198

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 · 38 · 38 recorded · 36 measured · Source: the US BTS Feb · 66 · 66 recorded · 63 measured · Source: the US BTS Mar · 106 · 106 recorded · 105 measured · Source: the US BTS Apr · 96 · 96 recorded · 96 measured · Source: the US BTS May · 98 · 98 recorded · 98 measured · Source: the US BTS Jun · 108 · 108 recorded · 108 measured · Source: the US BTS Jul · 116 · 116 recorded · 115 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 · 74 · 74 recorded · 74 measured · Source: the US BTS Nov · 94 · 94 recorded · 94 measured · Source: the US BTS Dec · 91 · 91 recorded · 90 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—3638
FebFewer than 200 measured departures—6366
MarFewer than 200 measured departures—105106
AprFewer than 200 measured departures—9696
MayFewer than 200 measured departures—9898
JunFewer than 200 measured departures—108108
JulFewer than 200 measured departures—115116
AugFewer than 200 measured departures—4444
SepFewer than 200 measured departures—4242
OctFewer than 200 measured departures—7474
NovFewer than 200 measured departures—9494
DecFewer than 200 measured departures—9091

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 73.0% 710
  • Delayed >15 min 26.2% 255
  • Cancelled 0.8% 8
  • 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
WN2055 BWI → MEM 42 81.0%
WN2523 MEM → BWI 42 48.8%
WN1101 MEM → BWI 41 56.1%
WN2374 MEM → BWI 40 77.5%

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 54 −11.5% 0 53.7%
June 2026 48 −20.0% 0 75.0%
May 2026 46 −11.5% 0 76.1%
April 2026 44 −15.4% 0 70.5%
March 2026 58 +23.4% 0 60.3%
February 2026 33 +10.0% 3 87.9%
January 2026 18 +0.0% 2 66.7%
December 2025 58 +81.3% 1 67.2%
November 2025 56 +47.4% 0 91.1%
October 2025 52 +136.4% 0 80.8%
September 2025 42 0 81.0%
August 2025 44 0 70.5%
July 2025 61 1 70.5%
June 2025 60 0 73.3%
May 2025 52 0 65.4%
April 2025 52 0 75.0%
March 2025 47 1 89.4%
February 2025 30 0 73.3%
January 2025 18 0 77.8%
December 2024 32 0 65.6%
November 2024 38 0 78.9%
October 2024 22 0 77.3%

How to read this chart

Loading the guide…