ICAO KILG

Wilmington, Delaware (ILG)

Wilmington Airport handled 35,247 passengers in July 2026, up 6.4% on a year earlier, according to the US BTS.

Flights (arrivals + departures) over time

The most recent periods19 periods
PeriodFlights (arrivals + departures) 2025Flights (arrivals + departures) 2026Change vs last year
January207211▲ 1.9%
February202201▼ 0.5%
March198268▲ 35.4%
April203233▲ 14.8%
May189188▼ 0.5%
June230213▼ 7.4%
July228255▲ 11.8%
August244––
September170––
October213–in progress
November275––
December237––
Year to date (Jan–Jul)1,4571,569▲ 7.7%

Passengers over time

Full count · domestic + international
The most recent periods19 periods
PeriodPassengers 2025Passengers 2026Change vs last year
January23,11326,749▲ 15.7%
February23,34426,342▲ 12.8%
March28,04841,004▲ 46.2%
April26,44335,531▲ 34.4%
May23,04127,211▲ 18.1%
June31,03332,025▲ 3.2%
July33,13035,247▲ 6.4%
August35,594––
September20,027––
October24,737–in progress
November33,750––
December32,172––
Year to date (Jan–Jul)188,152224,109▲ 19.1%

Tonnes of cargo over time

Full count · domestic + international

Seats offered over time

Full count · domestic + international
The most recent periods19 periods
PeriodSeats offered 2025Seats offered 2026Change vs last year
January38,42038,749▲ 0.9%
February37,48636,904▼ 1.6%
March36,29848,485▲ 33.6%
April37,67042,702▲ 13.4%
May34,21733,882▼ 1.0%
June42,02637,980▼ 9.6%
July42,65045,879▲ 7.6%
August44,836––
September30,707––
October37,733–in progress
November48,270––
December41,982––
Year to date (Jan–Jul)268,767284,581▲ 5.9%

Load factor (computed)

Full count · domestic + international

Passengers ÷ seats offered, both as reported by the US BTS for the same months. Computed by us; the two source series are shown on this page.

The most recent periods19 periods
PeriodLoad factor 2025Load factor 2026Change vs last year
January60.2%69.0%▲ 14.7%
February62.3%71.4%▲ 14.6%
March77.3%84.6%▲ 9.4%
April70.2%83.2%▲ 18.5%
May67.3%80.3%▲ 19.3%
June73.8%84.3%▲ 14.2%
July77.7%76.8%▼ 1.1%
August79.4%––
September65.2%––
October65.6%–in progress
November69.9%––
December76.6%––
Year-to-date average (Jan–Jul)69.8%78.5%▲ 12.5%

Seasonality · flights (arrivals + departures) by month

Year JanFebMarAprMayJunJulAugSepOctNovDec
2024 188 140 175 142 153 144 143 145 106 120 202 226
2025 207 202 198 203 189 230 228 244 170 213 275 237
2026 211 201 268 233 188 213 255
Series depth 36 years from 1990

Environment

Air pollutants at the airport (EPA estimate)

Modelled estimate, not a measurement: aircraft below 3,000 ft (landing and take-off), ground support equipment and auxiliary power units, plus any stationary sources the state reported at the airport site. Cruise emissions are not included.

In 2023, the US EPA estimated 38.3 tonnes of nitrogen oxides (NOₓ) and 3.9 tonnes of fine particles (PM2.5) from activity at Wilmington Airport, according to the EPA National Emissions Inventory.

PollutantUnit201720202023
NOₓ (Nitrogen oxides)tonnes67.829.738.3
CO (Carbon monoxide)tonnes252103149
SO₂ (Sulphur dioxide)tonnes6.73.04.1
VOC (Volatile organic compounds)tonnes37.116.618.7
PM2.5 (Fine particles)tonnes7.33.23.9
PM10 (Particulate matter)tonnes8.33.64.5
Leadkg16555.293.5
CO₂ (Carbon dioxide)tonnes46.47,340—

The inventory is published every three years. Coverage changes between editions (about 19,300 airport sites in 2017, 6,000 in 2020, 12,700 in 2023), 2020 reflects the pandemic drop in traffic, and EPA updates its aircraft model between editions — so the columns are not a trend (Los Angeles: 3,562 tonnes of NOₓ in 2017, 8,810 in 2023). CO₂ is only reported for some sites in 2017, for all sites in 2020, and not at all in 2023. EPA publishes US customary units; converted here to metric tonnes (× 0.907) and, for lead, kilograms.

US EPA — National Emissions Inventory

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