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Route · ILM → ATL · 2020–2025 BTS data

Wilmington to Atlanta

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ILM to ATL (Wilmington to Atlanta) ranks #1701 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

89.8%
On-time
+10.8 pts
vs US avg
97 min
Delay when late
7,445
Flights
#1701 of 4927
Corpus placement

Cancelled

0.9%

Best Month

Nov 2023 97%

Worst Month

Jun 2025 70%

Distance

377 mi

Carriers

11

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 95 16 0 0 DL
Nov 2025 110 15 2 0 DL
Oct 2025 116 13 0 0 DL
Sep 2025 114 4 0 0 DL
Aug 2025 118 20 0 0 DL
Jul 2025 119 19 2 1 DL
Jun 2025 104 31 4 0 DL
May 2025 66 12 0 0 DL
Apr 2025 61 7 0 0 DL
Mar 2025 50 5 0 0 DL,OO
Dec 2024 116 24 0 1 9E,DL
Nov 2024 107 4 0 0 9E,DL
Oct 2024 118 7 0 0 DL,9E
Sep 2024 118 6 2 0 9E,DL
Aug 2024 123 16 1 0 DL,9E
Jul 2024 122 27 9 1 9E,DL
Jun 2024 117 16 0 0 9E,DL
May 2024 107 18 1 0 9E,DL
Apr 2024 90 13 0 0 9E,DL
Mar 2024 93 5 0 0 9E,DL,OO
Feb 2024 87 6 0 0 9E,DL,OO
Jan 2024 93 13 0 0 9E,DL,OO
Dec 2023 96 8 0 0 DL,9E
Nov 2023 91 3 0 0 9E,DL

ILM–ATL seasonal on-time pattern

Best: September (95.3%) · weakest: July (85.0%)

80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 87.1%

Strongest calendar month

September

95.3% on-time · ~110 flights/mo

Busiest calendar month

July

~118 flights/mo avg

Weakest calendar month

July

85.0% on-time · ~118 flights/mo

Cancellation Rate

0.9%

21 of 2,431 flights

Diversion Rate

0.1%

3 of 2,431 flights

Explore origin & destination

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

ILM - Wilmington

Full on-time, delay-cause, and seasonal performance for Wilmington, NC.

ILM on-time profile

ATL - Atlanta

Full on-time, delay-cause, and seasonal performance for Atlanta, GA.

ATL on-time profile

Compare the two airports

See ILM and ATL side by side on delays, cancellations, and reliability.

Compare ILM vs ATL

Origin-hub reliability standing

Among ILM's stronger departures

ILM → ATL posts a 89.8% on-time rate, landing in the ≥85% band with 2 of 8 BTS-tracked routes leaving Wilmington. The same hub also shows 5 mid-band and 1 challenged departures · fleet-wide on-time rank #160 of 4927 (highest on-time = #1).

What the Data Says About ILM to ATL

Wilmington to Atlanta (ILM to ATL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89.8% on-time rate across 7,445 flights, with delays that do happen averaging 97.1 minutes. The corridor runs roughly 377 miles and is served by 11 carriers. Over the most recent 24 months, 21 of 2,431 flights were cancelled (0.9%) and 3 diverted (0.1%).

The monthly split is wide on this route: Nov 2023 posted the strongest performance at 97% on-time, while Jun 2025 came in at just 70% - a 27-point swing worth factoring into travel timing.

On the multi-year calendar, ILM–ATL peaks in September at 95.3% on-time while July carries the heaviest traffic (~118 flights per month) ; the softest month is July at 85.0%, a 10.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ILM to ATL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ILM to ATL ranks #1701 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 ILM to ATL? ▼
Flights from Wilmington to Atlanta have a 89.8% on-time rate based on 7,445 flights. The average delay is 97.1 minutes. The best recent month was Nov 2023 with 97% on-time.
What is the cancellation rate for ILM to ATL? ▼
Over the last 24 months, 0.9% of flights on this route were cancelled (21 of 2,431 flights) and 0.1% were diverted.
How far is the flight from ILM to ATL? ▼
The flight distance from Wilmington (ILM) to Atlanta (ATL) is approximately 377 miles. This route is served by 11 carriers.
When is the best time to fly from ILM to ATL? ▼
The best recent month for on-time performance was Nov 2023 (97% on-time). The worst was Jun 2025 (70% on-time). Consider booking during months with historically better performance.

Airports on this route

ILM Airport

Wilmington
ATL Airport

Atlanta
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 ILM–ATL data

ILM–ATL runs 10.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare ILM and ATL airport profiles: delay causes and top routes differ even on the same corridor. ILM airport
  • If your dates flex, September (95.3% on-time) beats July (85.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 89.8% 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.