Monthly totals of U.S. commercial air carrier traffic from the BTS T-100 segment summary (Socrata dataset jqx4-4iha, https://data.bts.gov/resource/jqx4-4iha.json). Each row is one month: departures, passengers, seats, load factor, passengers and seats per flight, distance per flight and per passenger (statute miles), payload, freight and mail (pounds) - for all operations, domestic operations, outbound international and inbound international separately. Method: BTS aggregates the T-100 filings of U.S. and foreign carriers operating to and from the United States. Units: counts for departures/passengers/seats; percent for load_factor; pounds for payload/freight/mail; statute miles for the distance columns. Caveats: the latest months lag by several months (T-100 filings finalize slowly); the April 2020 load-factor collapse (13.1%) reflects the COVID travel shutdown, not a data error. Coverage: United States, 2014-01 to the present, monthly granularity. Provenance: BTS keyless Socrata API, U.S. public domain - please cite the U.S. Department of Transportation, Bureau of Transportation Statistics. Primary key: month (first of month). Cadence: refreshed monthly. Nullability: no nulls in the published feed. Sample use: plot load_factor against time to see the COVID collapse and recovery in U.S. air travel.

Source: U.S. Bureau of Transportation Statistics
Rows: 146
Columns: 45
Source cadence: Monthly
Last refreshed: Sep 23, 2026
Theme: transport

Column	Type	Description
month	string	Year and month of the observation (first day of month, from the feed's calendar date); the primary key.
departures	float	Revenue aircraft departures. Scope: all U.S. commercial operations. (unit: count)
passengers	float	Revenue passengers enplaned. Scope: all U.S. commercial operations. (unit: count)
seats	float	Available seats. Scope: all U.S. commercial operations. (unit: count)
load_factor	float	Passenger load factor: passengers as a share of available seats. Scope: all U.S. commercial operations. (unit: percent)
passengers_per_flight	float	Average revenue passengers per departure. Scope: all U.S. commercial operations. (unit: passengers)
seats_per_flight	float	Average available seats per departure. Scope: all U.S. commercial operations. (unit: seats)
distance_per_flight_sm	float	Average distance flown per departure. Scope: all U.S. commercial operations. (unit: statute miles)
distance_per_passenger_sm	float	Average passenger trip distance. Scope: all U.S. commercial operations. (unit: statute miles)
payload_lbs	float	Total payload transported. Scope: all U.S. commercial operations. (unit: pounds)
freight_lbs	float	Freight transported. Scope: all U.S. commercial operations. (unit: pounds)
mail_lbs	float	Mail transported. Scope: all U.S. commercial operations. (unit: pounds)
domestic_departures	float	Revenue aircraft departures. Scope: domestic operations. (unit: count)
domestic_passengers	float	Revenue passengers enplaned. Scope: domestic operations. (unit: count)
domestic_seats	float	Available seats. Scope: domestic operations. (unit: count)
domestic_load_factor	float	Passenger load factor: passengers as a share of available seats. Scope: domestic operations. (unit: percent)
domestic_passengers_per_flight	float	Average revenue passengers per departure. Scope: domestic operations. (unit: passengers)
domestic_seats_per_flight	float	Average available seats per departure. Scope: domestic operations. (unit: seats)
domestic_distance_per_flight_sm	float	Average distance flown per departure. Scope: domestic operations. (unit: statute miles)
domestic_distance_per_passenger_sm	float	Average passenger trip distance. Scope: domestic operations. (unit: statute miles)
domestic_payload_lbs	float	Total payload transported. Scope: domestic operations. (unit: pounds)
domestic_freight_lbs	float	Freight transported. Scope: domestic operations. (unit: pounds)
domestic_mail_lbs	float	Mail transported. Scope: domestic operations. (unit: pounds)
outbound_departures	float	Revenue aircraft departures. Scope: outbound international operations (U.S. to foreign). (unit: count)
outbound_passengers	float	Revenue passengers enplaned. Scope: outbound international operations (U.S. to foreign). (unit: count)
outbound_seats	float	Available seats. Scope: outbound international operations (U.S. to foreign). (unit: count)
outbound_load_factor	float	Passenger load factor: passengers as a share of available seats. Scope: outbound international operations (U.S. to foreign). (unit: percent)
outbound_passengers_per_flight	float	Average revenue passengers per departure. Scope: outbound international operations (U.S. to foreign). (unit: passengers)
outbound_seats_per_flight	float	Average available seats per departure. Scope: outbound international operations (U.S. to foreign). (unit: seats)
outbound_distance_per_flight_sm	float	Average distance flown per departure. Scope: outbound international operations (U.S. to foreign). (unit: statute miles)
outbound_distance_per_passenger_sm	float	Average passenger trip distance. Scope: outbound international operations (U.S. to foreign). (unit: statute miles)
outbound_payload_lbs	float	Total payload transported. Scope: outbound international operations (U.S. to foreign). (unit: pounds)
outbound_freight_lbs	float	Freight transported. Scope: outbound international operations (U.S. to foreign). (unit: pounds)
outbound_mail_lbs	float	Mail transported. Scope: outbound international operations (U.S. to foreign). (unit: pounds)
inbound_departures	float	Revenue aircraft departures. Scope: inbound international operations (foreign to U.S.). (unit: count)
inbound_passengers	float	Revenue passengers enplaned. Scope: inbound international operations (foreign to U.S.). (unit: count)
inbound_seats	float	Available seats. Scope: inbound international operations (foreign to U.S.). (unit: count)
inbound_load_factor	float	Passenger load factor: passengers as a share of available seats. Scope: inbound international operations (foreign to U.S.). (unit: percent)
inbound_passengers_per_flight	float	Average revenue passengers per departure. Scope: inbound international operations (foreign to U.S.). (unit: passengers)
inbound_seats_per_flight	float	Average available seats per departure. Scope: inbound international operations (foreign to U.S.). (unit: seats)
inbound_distance_per_flight_sm	float	Average distance flown per departure. Scope: inbound international operations (foreign to U.S.). (unit: statute miles)
inbound_distance_per_passenger_sm	float	Average passenger trip distance. Scope: inbound international operations (foreign to U.S.). (unit: statute miles)
inbound_payload_lbs	float	Total payload transported. Scope: inbound international operations (foreign to U.S.). (unit: pounds)
inbound_freight_lbs	float	Freight transported. Scope: inbound international operations (foreign to U.S.). (unit: pounds)
inbound_mail_lbs	float	Mail transported. Scope: inbound international operations (foreign to U.S.). (unit: pounds)

First 10 sample rows — a preview, not the complete dataset.

month	departures	passengers	seats	load_factor	passengers_per_flight	seats_per_flight	distance_per_flight_sm	distance_per_passenger_sm	payload_lbs	freight_lbs	mail_lbs	domestic_departures	domestic_passengers	domestic_seats	domestic_load_factor	domestic_passengers_per_flight	domestic_seats_per_flight	domestic_distance_per_flight_sm	domestic_distance_per_passenger_sm	domestic_payload_lbs	domestic_freight_lbs	domestic_mail_lbs	outbound_departures	outbound_passengers	outbound_seats	outbound_load_factor	outbound_passengers_per_flight	outbound_seats_per_flight	outbound_distance_per_flight_sm	outbound_distance_per_passenger_sm	outbound_payload_lbs	outbound_freight_lbs	outbound_mail_lbs	inbound_departures	inbound_passengers	inbound_seats	inbound_load_factor	inbound_passengers_per_flight	inbound_seats_per_flight	inbound_distance_per_flight_sm	inbound_distance_per_passenger_sm	inbound_payload_lbs	inbound_freight_lbs	inbound_mail_lbs
2014-01-01	800,407	64,085,200	83,073,989	77.1	80.066	103.79	920.631	1,429.296	27,305,671,499	3,388,255,244	102,826,381	672,463	49,140,242	63,952,303	76.8	73.075	95.102	670.399	892.52	19,849,882,189	1,930,006,155	80,169,693	64,005	7,292,753	9,571,628	76.2	113.94	149.545	2,240.047	3,189.402	3,728,826,764	635,576,788	15,461,880	63,939	7,652,205	9,550,058	80.1	119.68	149.362	2,231.612	3,198.894	3,726,962,546	822,672,301	7,194,808
2014-02-01	736,647	59,200,700	75,638,435	78.3	80.365	102.679	903.415	1,354.619	24,741,635,076	3,101,232,835	90,539,485	621,976	46,503,215	58,749,547	79.2	74.767	94.456	662.886	875.936	18,172,177,522	1,724,754,412	71,437,970	57,404	6,371,947	8,454,785	75.4	111.002	147.286	2,214.825	3,106.231	3,288,282,496	641,782,723	13,373,652	57,267	6,325,538	8,434,103	75	110.457	147.277	2,201.257	3,109.273	3,281,175,058	734,695,700	5,727,863
2014-03-01	882,674	74,803,106	91,607,707	81.7	84.746	103.784	912.878	1,348.047	29,656,228,572	3,731,134,290	100,160,058	744,893	58,935,223	71,357,117	82.6	79.119	95.795	675.192	883.939	21,740,134,993	1,988,792,867	79,043,111	68,884	7,886,258	10,129,464	77.9	114.486	147.051	2,205.082	3,052.75	3,955,989,434	772,824,818	14,362,168	68,897	7,981,625	10,121,126	78.9	115.849	146.902	2,190.713	3,090.623	3,960,104,145	969,516,605	6,754,779
2014-04-01	858,050	72,068,567	88,627,695	81.3	83.991	103.29	909.908	1,380.842	29,139,462,633	3,616,752,183	100,232,309	726,079	56,375,600	68,827,701	81.9	77.644	94.794	665.093	876.415	21,346,673,004	2,008,416,132	79,029,969	65,992	7,664,709	9,902,374	77.4	116.146	150.054	2,261.544	3,160.145	3,890,287,187	693,413,943	14,372,514	65,979	8,028,258	9,897,620	81.1	121.679	150.012	2,252.12	3,224.269	3,902,502,442	914,922,108	6,829,826
2014-05-01	882,106	75,661,631	91,235,748	82.9	85.774	103.429	915.598	1,413.709	29,998,603,103	3,725,595,697	97,900,335	747,228	59,090,787	70,661,336	83.6	79.08	94.565	662.032	874.402	21,843,668,893	2,020,974,251	77,240,958	67,620	8,520,461	10,313,931	82.6	126.005	152.528	2,325.598	3,344.618	4,088,349,350	735,894,076	13,794,122	67,258	8,050,383	10,260,481	78.5	119.694	152.554	2,315.098	3,328.627	4,066,584,860	968,727,370	6,865,255
2014-06-01	894,839	78,194,609	92,955,878	84.1	87.384	103.88	926.955	1,443.679	30,325,432,147	3,617,892,720	88,487,630	756,052	60,540,592	71,571,570	84.6	80.075	94.665	670.216	894.259	21,966,106,948	1,939,191,342	68,819,503	69,470	9,078,079	10,707,579	84.8	130.676	154.132	2,332.111	3,315.135	4,190,262,471	742,606,363	13,384,141	69,317	8,575,938	10,676,729	80.3	123.721	154.028	2,318.993	3,341.197	4,169,062,728	936,095,015	6,283,986
2014-07-01	941,222	82,180,878	97,242,261	84.5	87.313	103.315	928.093	1,447.875	31,782,336,738	3,778,415,084	97,429,218	793,742	63,045,744	74,393,158	84.7	79.429	93.725	669.132	904.176	22,879,174,634	2,050,842,306	77,889,355	73,765	9,207,396	11,433,844	80.5	124.821	155.004	2,328.177	3,188.846	4,449,263,663	751,752,908	13,124,694	73,715	9,927,738	11,415,259	87	134.677	154.857	2,315.473	3,285.969	4,453,898,441	975,819,870	6,415,169
2014-08-01	923,614	80,142,135	95,460,113	84	86.77	103.355	926.007	1,474.276	31,089,823,838	3,671,881,843	99,272,264	780,721	61,041,663	73,038,277	83.6	78.186	93.552	662.576	897.753	22,434,177,708	2,026,812,641	78,732,622	71,493	9,257,378	11,222,716	82.5	129.486	156.976	2,373.792	3,310.628	4,333,025,861	715,432,403	14,067,432	71,400	9,843,094	11,199,120	87.9	137.858	156.85	2,356.813	3,322.489	4,322,620,269	929,636,799	6,472,210
2014-09-01	838,777	68,811,118	86,726,778	79.3	82.037	103.397	916.198	1,447.3	28,399,927,071	3,533,092,257	95,596,672	716,535	53,628,778	67,618,511	79.3	74.845	94.369	652.782	867.675	20,831,417,400	1,923,724,150	74,927,579	61,097	7,511,423	9,557,696	78.6	122.943	156.435	2,466.303	3,488.234	3,761,808,698	667,514,406	13,696,192	61,145	7,670,917	9,550,571	80.3	125.455	156.195	2,454.18	3,501.062	3,806,700,973	941,853,701	6,972,901
2014-10-01	874,097	73,328,844	90,652,254	80.9	83.891	103.71	915.875	1,393.205	29,981,616,308	3,970,076,207	107,469,310	748,960	58,157,836	71,292,780	81.6	77.651	95.189	660.49	865.359	22,090,999,551	2,154,254,885	85,984,064	62,605	7,576,652	9,687,341	78.2	121.023	154.737	2,450.006	3,437.996	3,938,317,217	747,439,277	13,972,977	62,532	7,594,356	9,672,133	78.5	121.448	154.675	2,438.75	3,395.442	3,952,299,540	1,068,382,045	7,512,269

Profiled Sep 23, 2026 from snapshot 20260923T145949Z-0b21178aba72

Measured

Completeness: 100%
Rows: 146
Columns: 45
Columns with gaps: 0

Rows per yearmonth · 2014–2026 · 13 years

20142026

Column	Missing	Distinct	Range	Distribution
monthvarchar	0%	122	—	2014-01-011 2014-02-011 2014-03-011
departuresdouble	0%	172	294,263 → 996,986median 868,724	4 outside 1st–99th percentile
passengersdouble	0%	156	3,366,289 → 105,362,362median 80,747,922	4 outside 1st–99th percentile
seatsdouble	0%	137	25,612,294 → 126,568,689median 100,234,309	4 outside 1st–99th percentile
load_factordouble	0%	93	13.1 → 86.3median 80.9	4 outside 1st–99th percentile
passengers_per_flightdouble	0%	151	11.44 → 111.1median 93.25	4 outside 1st–99th percentile
seats_per_flightdouble	0%	166	87.04 → 130.33median 115.38	4 outside 1st–99th percentile
distance_per_flight_smdouble	0%	128	881.66 → 1,075median 999.58	4 outside 1st–99th percentile
distance_per_passenger_smdouble	0%	147	936.79 → 1,534median 1,433	4 outside 1st–99th percentile
payload_lbsdouble	0%	157	14,550,935,963 → 40,192,002,723median 33,764,914,179	4 outside 1st–99th percentile
freight_lbsdouble	0%	178	3,101,232,835 → 5,418,721,666median 4,254,444,891	4 outside 1st–99th percentile
mail_lbsdouble	0%	160	50,550,687 → 222,268,595median 114,791,025	4 outside 1st–99th percentile
domestic_departuresdouble	0%	121	269,970 → 834,320median 727,671	4 outside 1st–99th percentile
domestic_passengersdouble	0%	177	2,929,774 → 79,633,857median 63,032,271	4 outside 1st–99th percentile
domestic_seatsdouble	0%	139	23,831,472 → 96,257,472median 78,148,596	4 outside 1st–99th percentile
domestic_load_factordouble	0%	88	12.3 → 86.6median 81.3	4 outside 1st–99th percentile
domestic_passengers_per_flightdouble	0%	162	10.85 → 102.15median 86.83	4 outside 1st–99th percentile
domestic_seats_per_flightdouble	0%	130	88.27 → 121.88median 106.49	4 outside 1st–99th percentile
domestic_distance_per_flight_smdouble	0%	136	652.78 → 780.26median 726.87	4 outside 1st–99th percentile
domestic_distance_per_passenger_smdouble	0%	133	820.51 → 958.98median 918.04	4 outside 1st–99th percentile
domestic_payload_lbsdouble	0%	165	11,240,698,436 → 28,756,191,852median 24,694,637,842	4 outside 1st–99th percentile
domestic_freight_lbsdouble	0%	158	1,724,754,412 → 3,178,678,681median 2,309,730,103	4 outside 1st–99th percentile
domestic_mail_lbsdouble	0%	144	41,987,870 → 215,628,720median 98,496,379	4 outside 1st–99th percentile
outbound_departuresdouble	0%	156	11,852 → 84,754median 69,136	4 outside 1st–99th percentile
outbound_passengersdouble	0%	119	229,332 → 12,631,470median 9,112,192	4 outside 1st–99th percentile
outbound_seatsdouble	0%	209	872,549 → 15,145,868median 11,436,273	4 outside 1st–99th percentile
outbound_load_factordouble	0%	98	25.8 → 90.2median 79	4 outside 1st–99th percentile
outbound_passengers_per_flightdouble	0%	145	18.05 → 157.37median 129.79	4 outside 1st–99th percentile
outbound_seats_per_flightdouble	0%	149	70.08 → 181.99median 162.68	4 outside 1st–99th percentile
outbound_distance_per_flight_smdouble	0%	152	2,205 → 3,737median 2,471	4 outside 1st–99th percentile
outbound_distance_per_passenger_smdouble	0%	152	2,180 → 4,755median 3,224	4 outside 1st–99th percentile
outbound_payload_lbsdouble	0%	142	1,580,455,050 → 5,660,237,848median 4,521,043,238	4 outside 1st–99th percentile
outbound_freight_lbsdouble	0%	143	546,893,613 → 911,527,598median 735,921,264	4 outside 1st–99th percentile
outbound_mail_lbsdouble	0%	144	3,663,922 → 17,982,210median 8,450,984	4 outside 1st–99th percentile
inbound_departuresdouble	0%	177	12,441 → 84,890median 69,212	4 outside 1st–99th percentile
inbound_passengersdouble	0%	144	168,524 → 13,333,716median 8,989,544	4 outside 1st–99th percentile
inbound_seatsdouble	0%	152	906,827 → 15,165,349median 11,429,569	4 outside 1st–99th percentile
inbound_load_factordouble	0%	85	18.6 → 91.5median 79.3	4 outside 1st–99th percentile
inbound_passengers_per_flightdouble	0%	151	12.91 → 160.14median 129.53	4 outside 1st–99th percentile
inbound_seats_per_flightdouble	0%	176	69.49 → 181.96median 162.58	4 outside 1st–99th percentile
inbound_distance_per_flight_smdouble	0%	159	2,191 → 3,729median 2,469	4 outside 1st–99th percentile
inbound_distance_per_passenger_smdouble	0%	165	2,102 → 4,240median 3,241	4 outside 1st–99th percentile
inbound_payload_lbsdouble	0%	162	1,729,782,477 → 5,775,573,023median 4,609,078,882	4 outside 1st–99th percentile
inbound_freight_lbsdouble	0%	163	734,695,700 → 1,511,665,822median 1,169,379,235	4 outside 1st–99th percentile
inbound_mail_lbsdouble	0%	125	1,655,826 → 10,733,823median 5,961,698	4 outside 1st–99th percentile

Sep 23, 2026Current
20260923T145949Z-0b21178aba72 · sha256 0b21178aba72…
146 rows · first snapshot

Point any LLM at the metadata endpoint — the documentation above is machine-readable too (JSON-LD + Croissant).

cURL

curl "https://datazimuts.com/v1/datasets/bts/bts_aviation_traffic_monthly" | jq '{title, rows, columns_count, license}'

Python

import requests

ds = requests.get("https://datazimuts.com/v1/datasets/bts/bts_aviation_traffic_monthly").json()
print(ds["title"], ds["rows"], "rows")

# Sample rows for an LLM context window
for row in ds.get("sample_rows", [])[:5]:
    print(row)

API endpoint: https://datazimuts.com/v1/datasets/bts/bts_aviation_traffic_monthly

Tip: fetch /llms.txt for the full machine-readable catalog.

Where this data comes from and what was made from it. Other people's work shows as counts; only shared projects are named.

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APA

U.S. Bureau of Transportation Statistics. (2026). U.S. commercial aviation traffic, monthly (T-100) [Data set, snapshot 20260923T145949Z-0b21178aba72, sha256 0b21178aba72]. Datazimuts. Retrieved 2026-09-23, from https://datazimuts.com/en/datasets/bts/bts_aviation_traffic_monthly?snapshot=20260923T145949Z-0b21178aba72

BibTeX

@misc{dz_bts_bts_aviation_traffic_monthly_0b21178a,
  title        = {{U.S. commercial aviation traffic, monthly (T-100)}},
  author       = {{U.S. Bureau of Transportation Statistics}},
  year         = {2026},
  publisher    = {Datazimuts},
  howpublished = {\url{https://datazimuts.com/en/datasets/bts/bts_aviation_traffic_monthly?snapshot=20260923T145949Z-0b21178aba72}},
  note         = {Snapshot 20260923T145949Z-0b21178aba72, sha256 0b21178aba729da7149daf24af0b91b868cdd4fba4fbbca95bfe91ece89495b4; accessed 2026-09-23}
}

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U.S. commercial aviation traffic, monthly (T-100)

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