Airport month record

AUSJUN

Austin-Bergstrom International in June 2026

Departures: 7,879
Month: June 2026
National, same month: 74.3%
Carriers: 10

Historical statistics for June 2026, not live status or a forecast for this year’s June. For today’s conditions at AUS, see live FAA status.

AUS in June sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 74.3%. The late ones land a little over an hour behind schedule. That rests on 7,879 flights, of which Delta Air Lines flew 1,151 at 80.2% on time.

Delta Air Lines is the most reliable of the five carriers covered here at 80.2% on time across 1,151 flights.

On time

69.1%

Arrivals under 15 minutes late, of 7,776 completed departures

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

0.98%

Nationally in June: 1.65%

Whole year

76.6%

AUS across all twelve months

These figures cover 7,879 departures from Austin-Bergstrom International in June 2026. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.

Against the year

June next to AUS's other months

Against AUS's own year, June ran 8 points worse than the twelve-month rate of 76.6%, which makes it the worst of the twelve months in the data.

AUS month by month
Month	Flights	On time	Avg delay	Cancelled	Grade
July 2025	7,896	69.6%	80 min	1.61%	C
August 2025	7,214	78.1%	74 min	0.94%	B+
September 2025	6,889	84.2%	65 min	0.39%	B+
October 2025	7,845	76.8%	61 min	0.40%	B+
November 2025	7,346	76.0%	75 min	1.05%	B
December 2025	7,528	77.9%	70 min	0.62%	B+
January 2026	6,707	82.8%	84 min	4.65%	B−
February 2026	6,471	81.9%	68 min	0.99%	B+
March 2026	7,973	73.3%	73 min	1.71%	C
April 2026	7,647	77.5%	64 min	0.59%	B+
May 2026	7,831	75.1%	71 min	0.91%	B+
June 2026 (this page)	7,879	69.1%	69 min	0.98%	C+

Departure window

The best time of day to leave AUS in June

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 42 points, against 20 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am1,640 flights90.1%
8am–11am1,208 flights80.9%
11am–2pm1,357 flights68.7%
2pm–5pm1,631 flights59.7%
5pm–8pm1,403 flights55.1%
8pm–5am640 flights48.3%

Scale runs 40% to 95%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is where this operation falls apart: 48.3% on time, against 90.1% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 1,640 flights scheduled in it.

Across the week, Saturday is the strongest day at 76.4% on time and Friday the weakest at 62.1%. 14 points is a smaller lever than departure hour, but it is free.

Carrier by carrier

Which airlines ran best at AUS in June

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 80.2% of the time; Southwest Airlines manages 59.8%. Sample sizes sit next to every figure, because a two-point gap across 3,460 flights means less than a ten-point one.

Carriers at AUS in June 2026
Airline	Flights	On time	Avg delay	Cancelled	Grade
Southwest Airlines	3,460	59.8%	54 min	0.75%	D+
Delta Air Lines	1,151	80.2%	77 min	0.70%	B+
American Airlines	951	71.9%	123 min	2.84%	C
United Airlines	871	76.0%	73 min	0.46%	B+
SkyWest Airlines	832	79.3%	77 min	0.48%	B+
Alaska Airlinesthin sample	150	83.2%	53 min	0.00%	B+
Frontier Airlinesthin sample	130	69.2%	73 min	0.00%	C+
Envoy Airthin sample	122	75.7%	160 min	5.74%	B−
JetBlue Airwaysthin sample	102	72.3%	73 min	0.00%	C+
Allegiant Airthin sample	95	52.1%	73 min	0.00%	F+

The spread between Delta and Southwest is 20 points, wide enough that it should decide the booking. On a hundred trips that is 20 more arrivals inside the on-time window.

Route by route

Busiest routes out of AUS in June

Routes from AUS in June 2026
Route	Flights	On time	Avg delay	Cancelled	Grade
AUS to DEN · Denver	512	72.4%	56 min	0.59%	C+
AUS to DFW · Dallas-Fort Worth	413	71.9%	145 min	7.02%	C−
AUS to ATL · Atlanta	378	78.3%	88 min	0.79%	B+
AUS to LAX · Los Angelesthin sample	359	75.4%	83 min	0.28%	B+
AUS to MCO · Orlandothin sample	291	69.2%	62 min	0.69%	C+
AUS to ORD · Chicagothin sample	269	68.3%	109 min	1.86%	C
AUS to LAS · Las Vegasthin sample	250	56.2%	51 min	0.40%	D+
AUS to PHX · Phoenixthin sample	248	68.2%	64 min	1.21%	C
AUS to SFO · San Franciscothin sample	243	55.1%	60 min	0.00%	D+
AUS to BNA · Nashvillethin sample	239	64.7%	60 min	0.42%	D+
AUS to SAN · San Diegothin sample	212	63.0%	52 min	1.89%	D
AUS to SEA · Seattlethin sample	207	78.4%	49 min	0.97%	B+
AUS to JFK · New Yorkthin sample	205	72.4%	96 min	0.98%	C+
AUS to IAH · Houstonthin sample	201	68.0%	60 min	0.00%	C+
AUS to MIA · Miamithin sample	200	78.3%	76 min	1.00%	B
AUS to DAL · Dallasthin sample	194	67.5%	70 min	1.55%	C
AUS to SLC · Salt Lake Citythin sample	163	71.2%	68 min	0.00%	C+
AUS to BOS · Bostonthin sample	162	70.8%	62 min	0.62%	C+
AUS to IND · Indianapolisthin sample	162	76.4%	72 min	0.62%	B+
AUS to MSY · New Orleansthin sample	147	61.4%	49 min	0.68%	D+
AUS to EWR · Newarkthin sample	146	84.7%	100 min	0.68%	B+
AUS to MSP · Minneapolisthin sample	143	74.1%	49 min	1.40%	C
AUS to MDW · Chicagothin sample	129	64.0%	45 min	2.33%	D
AUS to MCI · Kansas Citythin sample	127	74.0%	65 min	0.00%	C+
AUS to CLT · Charlottethin sample	120	80.7%	175 min	0.00%	B+

Delay causes

What held AUS up in June

One category carries most of the weight here. Late-arriving aircraft accounts for 45% of the 165,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
45%
Carrier
31%
National Airspace System
19%
Extreme weather
5%
Security
0%

45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 165,000 reported delay minutes here, that single category outweighs weather by 10 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 165,028 reported delay minutes.

Cancellations sit at 0.98% against a national 1.65%, which is ordinary. Diversions add another 0.33%.

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.9% of arrivals land a full hour or more behind schedule, against 9.7% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

What to do with this

Flying from AUS in June

For a June trip through AUS: plan on this being one of the airport's harder months. The 5am–8am departures held up best at 90.1% on time, and with 10.9% of arrivals an hour or more late, a connection here deserves more slack than the same trip in September would.

Austin-Bergstrom International (AUS), the whole year
AUS in July69.6%
AUS in August78.1%
AUS in September84.2%
AUS in October76.8%
AUS in November76.0%
AUS in December77.9%
AUS in January82.8%
AUS in February81.9%
AUS in March73.3%
AUS in April77.5%
AUS in May75.1%

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures