Likely delayed: there are delays at DL 1156's airports as of 6:47 PM ET. It arrived on time 57.6% of the time in June-August 2026. When it was late, the average delay was 1h 19m. None were cancelled. AUS has major delays (runway construction, max 3 hours and 3 minutes), so this flight is likely to be delayed.
Likely delayed
Likely delayed: AUS has major delays (runway construction, max 3 hours and 3 minutes). Scheduled to leave at 2:25 PM local time.
Cancellation risk: High 0% of its flights were cancelled in June-August 2026; AUS has major delays; rough weather at AUS.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Delta for official times.
Book a backup seat AUS → BOSThis flight is cancelled often; a refundable backup costs little
What to do now
Some links are affiliate links.
Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| AUS → BOS Austin, TX to Boston, MA | 2:25 PM → 7:41 PM | 58% |
Local times. Schedules change; check your booking.
How reliable is DL 1156?
| Arrived on time (within 15 min) | 57.6% |
| Average delay when late | 79 min |
| Cancelled | 0% |
| Diverted | 0% |
| Flights tracked | 92 |
Best and worst days to fly DL 1156
DL 1156 was most reliable on Fridays (77% on time) and least reliable on Mondays (43%).
| Monday | |
| Tuesday | |
| Wednesday | |
| Thursday | |
| Friday | |
| Saturday | |
| Sunday |
Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by Delta to the Department of Transportation.
Other flights AUS → BOS
All flights on this route, ranked
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the Delta app.
Delta delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is DL 1156 delayed today?
AUS has major delays (runway construction, max 3 hours and 3 minutes), so this flight is likely to be delayed. Checked 6:47 PM ET. For this flight's gate and exact status, check the Delta app.
Is DL 1156 usually on time?
DL 1156 arrived within 15 minutes of schedule 57.6% of the time in June-August 2026, with an average delay of 79 minutes when late.
How often is DL 1156 cancelled?
0% of DL 1156 flights were cancelled in June-August 2026.