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849 km · Domestic

Baltimore/Washington International Thurgood Marshall (BWI) – Gerald R. Ford (GRR)

In July 2026, 117 flights operated between Baltimore/Washington International Thurgood Marshall and Gerald R. Ford (both directions), and 67.5% 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
January6360▼ 4.8%
February5654▼ 3.6%
March62620.0%
April6072▲ 20.0%
May6282▲ 32.3%
June96112▲ 16.7%
July102117▲ 14.7%
August66––
September60––
October62–in progress
November60––
December62––
Year to date (Jan–Jul)501559▲ 11.6%

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
January79.4%93.3%▲ 17.5%
February85.7%74.1%▼ 13.5%
March83.9%62.9%▼ 25.0%
April90.0%80.6%▼ 10.4%
May67.7%81.7%▲ 20.7%
June66.7%61.6%▼ 7.6%
July75.5%67.5%▼ 10.6%
August72.7%––
September76.7%––
October80.6%–in progress
November81.7%––
December88.7%––
Year-to-date average (Jan–Jul)78.4%74.5%▼ 5.0%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January02–
February02–
March00–
April00–
May00–
June02–
July45▲ 25.0%
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)411▲ 175.0%

By direction

BWI → GRR

Scheduled flights
774
Flights operated
766
Cancelled
8 · 1.0%
On-time departures
74.3%

GRR → BWI

Scheduled flights
773
Flights operated
766
Cancelled
7 · 0.9%
On-time departures
81.3%

BWI → GRR and GRR → BWI counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 1,547 100.0% 77.8% 15

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 delay12:00–13:007.5min · 306 recorded · 306 measured
Gap to highest-delay hour4.3min12:00 ↔ 15:00
Recorded flights1,547BWI–GRR

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 · 114 recorded · 113 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 94 recorded · 94 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 15 recorded · 15 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 61 recorded · 59 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 181 recorded · 181 measured · Source: the US BTS 12:00 · 81.1% · 306 recorded · 306 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 181 recorded · 179 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 106 recorded · 106 measured · Source: the US BTS 15:00 · 77.3% · 207 recorded · 207 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 58 recorded · 57 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 69 recorded · 66 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 25 recorded · 25 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 34 recorded · 33 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 25 recorded · 23 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 67 recorded · 64 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 · 114 recorded · 113 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 94 recorded · 94 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 15 recorded · 15 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 61 recorded · 59 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 181 recorded · 181 measured · Source: the US BTS 12:00 · 7.5 min · 306 recorded · 306 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 181 recorded · 179 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 106 recorded · 106 measured · Source: the US BTS 15:00 · 11.8 min · 207 recorded · 207 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 58 recorded · 57 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 69 recorded · 66 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 25 recorded · 25 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 34 recorded · 33 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 25 recorded · 23 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 67 recorded · 64 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 · 114 · 114 recorded · 113 measured · Source: the US BTS 06:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 94 · 94 recorded · 94 measured · Source: the US BTS 09:00 · 15 · 15 recorded · 15 measured · Source: the US BTS 10:00 · 61 · 61 recorded · 59 measured · Source: the US BTS 11:00 · 181 · 181 recorded · 181 measured · Source: the US BTS 12:00 · 306 · 306 recorded · 306 measured · Source: the US BTS 13:00 · 181 · 181 recorded · 179 measured · Source: the US BTS 14:00 · 106 · 106 recorded · 106 measured · Source: the US BTS 15:00 · 207 · 207 recorded · 207 measured · Source: the US BTS 16:00 · 58 · 58 recorded · 57 measured · Source: the US BTS 17:00 · 69 · 69 recorded · 66 measured · Source: the US BTS 18:00 · 3 · 3 recorded · 3 measured · Source: the US BTS 19:00 · 25 · 25 recorded · 25 measured · Source: the US BTS 20:00 · 34 · 34 recorded · 33 measured · Source: the US BTS 21:00 · 25 · 25 recorded · 23 measured · Source: the US BTS 22:00 · 67 · 67 recorded · 64 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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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—113114
06:00Fewer than 200 measured departures—11
07:00No observations———
08:00Fewer than 200 measured departures—9494
09:00Fewer than 200 measured departures—1515
10:00Fewer than 200 measured departures—5961
11:00Fewer than 200 measured departures—181181
12:0081.1%7.5 min306306
13:00Fewer than 200 measured departures—179181
14:00Fewer than 200 measured departures—106106
15:0077.3%11.8 min207207
16:00Fewer than 200 measured departures—5758
17:00Fewer than 200 measured departures—6669
18:00Fewer than 200 measured departures—33
19:00Fewer than 200 measured departures—2525
20:00Fewer than 200 measured departures—3334
21:00Fewer than 200 measured departures—2325
22:00Fewer than 200 measured departures—6467
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 74.0% · 223 recorded · 219 measured · Source: the US BTS Tuesday · 83.3% · 220 recorded · 216 measured · Source: the US BTS Wednesday · 79.6% · 220 recorded · 220 measured · Source: the US BTS Thursday · 72.7% · 224 recorded · 223 measured · Source: the US BTS Friday · 70.3% · 222 recorded · 222 measured · Source: the US BTS Saturday · 84.4% · 218 recorded · 218 measured · Source: the US BTS Sunday · 80.8% · 220 recorded · 214 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 · 15.4 min · 223 recorded · 219 measured · Source: the US BTS Tuesday · 7.2 min · 220 recorded · 216 measured · Source: the US BTS Wednesday · 10.2 min · 220 recorded · 220 measured · Source: the US BTS Thursday · 17.5 min · 224 recorded · 223 measured · Source: the US BTS Friday · 12.6 min · 222 recorded · 222 measured · Source: the US BTS Saturday · 7.2 min · 218 recorded · 218 measured · Source: the US BTS Sunday · 11.3 min · 220 recorded · 214 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 · 223 · 223 recorded · 219 measured · Source: the US BTS Tuesday · 220 · 220 recorded · 216 measured · Source: the US BTS Wednesday · 220 · 220 recorded · 220 measured · Source: the US BTS Thursday · 224 · 224 recorded · 223 measured · Source: the US BTS Friday · 222 · 222 recorded · 222 measured · Source: the US BTS Saturday · 218 · 218 recorded · 218 measured · Source: the US BTS Sunday · 220 · 220 recorded · 214 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday74.0%15.4 min219223
Tuesday83.3%7.2 min216220
Wednesday79.6%10.2 min220220
Thursday72.7%17.5 min223224
Friday70.3%12.6 min222222
Saturday84.4%7.2 min218218
Sunday80.8%11.3 min214220

Month of year

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

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · Fewer than 200 measured departures · 125 recorded · 123 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 112 recorded · 110 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 132 recorded · 132 measured · Source: the US BTS May · Fewer than 200 measured departures · 144 recorded · 144 measured · Source: the US BTS Jun · 63.9% · 210 recorded · 208 measured · Source: the US BTS Jul · 71.2% · 228 recorded · 219 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 66 recorded · 66 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 60 recorded · 60 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 102 recorded · 102 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 120 recorded · 120 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 124 recorded · 124 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
Jan · Fewer than 200 measured departures · 125 recorded · 123 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 112 recorded · 110 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 132 recorded · 132 measured · Source: the US BTS May · Fewer than 200 measured departures · 144 recorded · 144 measured · Source: the US BTS Jun · 19.8 min · 210 recorded · 208 measured · Source: the US BTS Jul · 19.9 min · 228 recorded · 219 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 66 recorded · 66 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 60 recorded · 60 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 102 recorded · 102 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 120 recorded · 120 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 124 recorded · 124 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
Jan · 125 · 125 recorded · 123 measured · Source: the US BTS Feb · 112 · 112 recorded · 110 measured · Source: the US BTS Mar · 124 · 124 recorded · 124 measured · Source: the US BTS Apr · 132 · 132 recorded · 132 measured · Source: the US BTS May · 144 · 144 recorded · 144 measured · Source: the US BTS Jun · 210 · 210 recorded · 208 measured · Source: the US BTS Jul · 228 · 228 recorded · 219 measured · Source: the US BTS Aug · 66 · 66 recorded · 66 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 · 120 · 120 recorded · 120 measured · Source: the US BTS Dec · 124 · 124 recorded · 124 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—123125
FebFewer than 200 measured departures—110112
MarFewer than 200 measured departures—124124
AprFewer than 200 measured departures—132132
MayFewer than 200 measured departures—144144
Jun63.9%19.8 min208210
Jul71.2%19.9 min219228
AugFewer than 200 measured departures—6666
SepFewer than 200 measured departures—6060
OctFewer than 200 measured departures—102102
NovFewer than 200 measured departures—120120
DecFewer than 200 measured departures—124124

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 77.1% 1,192
  • Delayed >15 min 22.0% 340
  • Cancelled 1.0% 15
  • 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

15
15 of 15
Flight numbersBy direction DeparturesOn time
WN1523 GRR → BWI 58 98.3%
WN1767 GRR → BWI 58 87.5%
WN3303 BWI → GRR 58 79.3%
WN3541 GRR → BWI 57 77.2%
WN1222 BWI → GRR 55 83.0%
WN4373 BWI → GRR 50 55.6%
WN1696 BWI → GRR 42 83.3%
WN1892 GRR → BWI 42 51.2%
WN2244 GRR → BWI 42 85.7%
WN1826 GRR → BWI 34 76.5%
WN2070 BWI → GRR 34 73.5%
WN2405 GRR → BWI 33 81.8%
WN857 BWI → GRR 33 87.9%
WN1549 BWI → GRR 32 90.6%
WN1926 GRR → BWI 31 93.6%

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 117 +14.7% 5 67.5%
June 2026 112 +16.7% 2 61.6%
May 2026 82 +32.3% 0 81.7%
April 2026 72 +20.0% 0 80.6%
March 2026 62 +0.0% 0 62.9%
February 2026 54 −3.6% 2 74.1%
January 2026 60 −4.8% 2 93.3%
December 2025 62 +0.0% 0 88.7%
November 2025 60 +0.0% 0 81.7%
October 2025 62 +55.0% 0 80.6%
September 2025 60 0 76.7%
August 2025 66 0 72.7%
July 2025 102 4 75.5%
June 2025 96 0 66.7%
May 2025 62 0 67.7%
April 2025 60 0 90.0%
March 2025 62 0 83.9%
February 2025 56 0 85.7%
January 2025 63 0 79.4%
December 2024 62 0 90.3%
November 2024 60 0 95.0%
October 2024 40 0 90.0%

How to read this chart

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