Routes › Wilmington (ILM) › ILM to BOS
Route · 12 months to July 2026
Wilmington to Boston: on-time record
Wilmington International to Logan International
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report. Data through July 2026; this is a monthly history, not live flight status.
61.4% of scheduled ILM to BOS flights arrived on time in the 12 months to July 2026. The figure covers 433 flights between Wilmington and Boston by carriers that report to BTS, a distance of 672 miles.
That is 14.6 points below the national on-time share of 76.0% for the same period and 16.8 points below the 78.2% recorded for all departures from ILM. Flights that did arrive were 23.2 min late on average, and 1.6% of scheduled flights were cancelled (national: 1.8%).
3 reporting carriers flew the route at least 60 times. Republic Airline had the highest on-time share at 68.1% of 160 flights; Envoy Air had the lowest at 55.9% of 93.
By scheduled departure hour (local time at ILM), flights leaving from 10 am to 11 am had the highest on-time share, 100.0%; those leaving from 4 pm to 5 pm had the lowest, 30.8%.
The on-time share is down 10.2 points on the previous 12 months (71.6%); cancellations moved from 2.0% to 1.6%.
Of the delay minutes that carriers assigned to a BTS cause category on this route, national aviation system 44%, late-arriving aircraft 25% and air carrier 21%.
- On time 61.4%
- Arrived 15+ minutes late 36.7%
- Cancelled 1.6%
- Diverted 0.2%
Airlines on the route compared
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| B6 JetBlue Airways | 180 | 42% | 58.3% | 33.1 min | 0.6% |
| YX Republic Airline | 160 | 37% | 68.1% | 11.4 min | 3.1% |
| MQ Envoy Air | 93 | 21% | 55.9% | 23.8 min | 1.1% |
Carriers with at least 24 flights in the 12 months to July 2026. The on-time pill is green when a carrier is at or above the route's overall share. Regional carriers operate flights sold under larger airlines' brands; BTS lists the carrier that operated the flight.
Compared with the airports and the nation
| Measure | ILM to BOS | All departures from ILM | All arrivals at BOS | All reported flights |
|---|---|---|---|---|
| Arrived on time | 61.4% | 78.2% | 71.2% | 76.0% |
| Arrived 15+ minutes late | 36.7% | 18.2% | 25.9% | 21.9% |
| Cancelled | 1.6% | 3.2% | 2.8% | 1.8% |
| Diverted | 0.2% | 0.4% | 0.1% | 0.3% |
| Average arrival delay | 23.2 min | 5.0 min | 11.5 min | 8.1 min |
| Delay minutes per 100 flights | 3,049 | 1,620 | 2,030 | 1,684 |
| Scheduled flights | 433 | 7,522 | 143,441 | 7,043,858 |
12 months to July 2026. Delay minutes count late arrivals only (an early arrival is zero), so the per-100-flights row is a normalised total rather than an average of early and late.
The return direction, BOS to ILM, recorded 81.3% on time across 433 flights in the same period.
Month by month
Year on year: on time 61.4% against 71.6% (−10.2 pts), cancelled 1.6% against 2.0%, flights 433 against 352.
By scheduled departure hour
Delay causes
Seasonality
| Calendar month | Flights | On time | Cancelled | Avg arrival delay | Years in sample |
|---|---|---|---|---|---|
| Apr | 60 | 80.0% | 0.0% | -3.2 min | 2 |
| May | 140 | 65.0% | 1.4% | 12.5 min | 3 |
| Jun | 170 | 65.9% | 0.6% | 25.7 min | 3 |
| Jul | 180 | 59.4% | 4.4% | 36.3 min | 3 |
| Aug | 150 | 75.3% | 1.3% | 7.3 min | 3 |
| Sep | 132 | 64.4% | 3.0% | 16.2 min | 3 |
| Oct | 126 | 65.9% | 0.8% | 17.0 min | 3 |
| Nov | 11 | 81.8% | 0.0% | 9.7 min | 3 |
Each calendar month summed across the 36 months on file, so most rows combine three years. The pill compares the month with the route's own 12-month share.
Other routes from Wilmington (ILM)
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ILM–CLT | Wilmington to Charlotte | 1,820 | 86.3% | 0.3 min | 2.1% |
| ILM–ATL | Wilmington to Atlanta | 1,149 | 86.2% | -4.4 min | 1.0% |
| ILM–LGA | Wilmington to New York | 1,027 | 72.1% | 9.4 min | 6.4% |
| ILM–DCA | Wilmington to Washington | 880 | 63.1% | 19.1 min | 6.6% |
| ILM–DFW | Wilmington to Dallas/Fort Worth | 708 | 76.7% | 4.2 min | 3.2% |
| ILM–ORD | Wilmington to Chicago | 542 | 77.5% | 9.6 min | 2.2% |
| ILM–MIA | Wilmington to Miami | 456 | 84.6% | -1.3 min | 1.8% |
| ILM–EWR | Wilmington to Newark | 386 | 82.6% | -5.1 min | 3.4% |
All 12 routes and the airport record for ILM · airport record for BOS
Questions and answers
How often are flights from Wilmington to Boston on time?
61.4% of the 433 flights scheduled from ILM to BOS in the 12 months to July 2026 arrived less than 15 minutes after their scheduled time. The national share for the same period was 76.0%. Cancelled and diverted flights count as not on time.
Which airline has the highest on-time share from ILM to BOS?
Among reporting carriers with at least 60 flights on the route, Republic Airline had the highest on-time share (68.1%), followed by JetBlue Airways (58.3%) and Envoy Air (55.9%). Differences of a point or two on a few hundred flights are small.
What causes delays between Wilmington and Boston?
For flights that arrived 15 or more minutes late, carriers attributed the delay minutes as follows: national aviation system 44%, late-arriving aircraft 25%, air carrier 21%, extreme weather 10%, security 0%. The categories are the carriers' own reports to BTS; weather that slows the wider system is usually recorded under the National Aviation System rather than extreme weather.
What time of day has the highest on-time share from ILM?
Flights scheduled to leave ILM from 10 am to 11 am arrived on time 100.0% of the time, the highest of any hour with enough flights to compare. The lowest was 4 pm to 5 pm at 30.8%. Delays tend to build through the day as late aircraft carry over to later flights.
Is it getting better?
The on-time share for the 12 months to July 2026 was 61.4%, down 10.2 points on the previous 12 months (71.6%). The monthly chart on this page shows each of the last 36 months. Across those months, April had the highest on-time share (80.0%) and July the lowest (59.4%).
Where does this data come from?
Every figure is computed from the Bureau of Transportation Statistics Reporting Carrier On-Time Performance files, which list each scheduled domestic flight by the carriers required to report. This page covers August 2023 to July 2026. It shows totals and averages only; it is not a live flight-status service.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026, a US government work in the public domain. Figures are totals and averages over all scheduled flights by reporting carriers on the route; no individual flight or aircraft is identified. Times are local to the departure airport. The load factor and passenger counts from the BTS T-100 series are not included in this edition. See the methodology; report processing errors through corrections.