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Route · RDU → BWI · 2020–2025 BTS data

Raleigh/Durham to Baltimore

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), RDU to BWI (Raleigh/Durham to Baltimore) ranks #1290 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86%
On-time
+7 pts
vs US avg
57 min
Delay when late
9,230
Flights
#1290 of 4927
Corpus placement

Cancelled

1.1%

Best Month

Nov 2024 95%

Worst Month

Jul 2024 69%

Distance

255 mi

Carriers

7

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 161 23 2 0 WN
Nov 2025 160 11 6 0 WN
Oct 2025 166 31 0 0 WN
Sep 2025 141 11 0 1 WN
Aug 2025 150 18 2 1 WN,NK
Jul 2025 169 41 8 0 NK,WN
Jun 2025 165 40 3 0 WN,NK
May 2025 141 23 1 0 WN,NK
Apr 2025 137 23 1 0 WN
Mar 2025 147 19 1 0 WN
Feb 2025 124 16 1 0 WN
Jan 2025 138 9 5 0 WN
Dec 2024 161 22 0 0 WN
Nov 2024 159 8 0 0 WN
Oct 2024 158 12 0 0 WN
Sep 2024 158 20 0 0 WN
Aug 2024 163 41 1 0 WN
Jul 2024 156 48 3 1 WN
Jun 2024 152 23 0 0 WN
May 2024 161 44 0 1 WN
Apr 2024 155 32 1 1 WN
Mar 2024 157 23 0 0 WN
Feb 2024 141 12 0 0 WN
Jan 2024 151 21 6 1 WN

RDU–BWI seasonal on-time pattern

Best: November (92.4%) · weakest: July (76.8%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 84.1%

Strongest calendar month

November

92.4% on-time · ~125 flights/mo

Busiest calendar month

March

~146 flights/mo avg

Weakest calendar month

July

76.8% on-time · ~132 flights/mo

Cancellation Rate

1.1%

41 of 3,671 flights

Diversion Rate

0.2%

6 of 3,671 flights

Explore origin & destination

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

RDU - Raleigh/Durham

Full on-time, delay-cause, and seasonal performance for Raleigh/Durham, NC.

RDU on-time profile

BWI - Baltimore

Full on-time, delay-cause, and seasonal performance for Baltimore, MD.

BWI on-time profile

Compare the two airports

See RDU and BWI side by side on delays, cancellations, and reliability.

Compare RDU vs BWI

Origin-hub reliability standing

Among RDU's stronger departures

RDU → BWI posts a 86% on-time rate, landing in the ≥85% band with 9 of 35 BTS-tracked routes leaving Raleigh/Durham. The same hub also shows 25 mid-band and 1 challenged departures · fleet-wide on-time rank #914 of 4927 (highest on-time = #1).

What the Data Says About RDU to BWI

Raleigh/Durham to Baltimore (RDU to BWI) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86% on-time rate across 9,230 flights, with delays that do happen averaging 56.6 minutes. The corridor runs roughly 255 miles and is served by 7 carriers. Over the most recent 24 months, 41 of 3,671 flights were cancelled (1.1%) and 6 diverted (0.2%).

The monthly split is wide on this route: Nov 2024 posted the strongest performance at 95% on-time, while Jul 2024 came in at just 69% - a 26-point swing worth factoring into travel timing.

On the multi-year calendar, RDU–BWI peaks in November at 92.4% on-time while March carries the heaviest traffic (~146 flights per month) ; the softest month is July at 76.8%, a 15.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does RDU to BWI rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, RDU to BWI ranks #1290 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 RDU to BWI? ▼
Flights from Raleigh/Durham to Baltimore have a 86% on-time rate based on 9,230 flights. The average delay is 56.6 minutes. The best recent month was Nov 2024 with 95% on-time.
What is the cancellation rate for RDU to BWI? ▼
Over the last 24 months, 1.1% of flights on this route were cancelled (41 of 3,671 flights) and 0.2% were diverted.
How far is the flight from RDU to BWI? ▼
The flight distance from Raleigh/Durham (RDU) to Baltimore (BWI) is approximately 255 miles. This route is served by 7 carriers.
When is the best time to fly from RDU to BWI? ▼
The best recent month for on-time performance was Nov 2024 (95% on-time). The worst was Jul 2024 (69% on-time). Consider booking during months with historically better performance.

Airports on this route

RDU Airport

Raleigh/Durham
BWI Airport

Baltimore
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 RDU–BWI data

RDU–BWI runs 7 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare RDU and BWI airport profiles: delay causes and top routes differ even on the same corridor. RDU airport
  • If your dates flex, November (92.4% on-time) beats July (76.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86% 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.