Route on-time record
AUS to BOS: most on-time flights and the best time to fly
Austin (Austin Bergstrom International Airport) to Boston (Boston Logan International Airport). 1,609 nonstop flights in Jun 2025 to May 2026, 64% arrived within 15 minutes and 2.4% were cancelled. The most reliable flight number was Delta 2098 at 7:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
AUS → BOS
Austin to Boston: 1,609 nonstop flights a year
On time (12 months)
64%
Cancelled
2.4%
avg delay 31 min
Best time to leave
Before 9 AM
88% on time vs 51% noon to 3 PM
Most reliable airline
Delta
68% chance on time
Lowest nonstop fare seen in the next two months: $310 (JetBlue 1238 on 2026-10-28). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 2098
7:20 AM → 12:11 PM3h 57m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 87%
- Cancelled
- 2.5%
- Avg arrival delay
- 18 min
- Arrived on time 87% of the time (355 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; Noon to 3 PM: 51%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 92 ground stops and delay programs started).
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Strong track record · 355 flights
Find Delta 2098 fares Opens this date on Aviasales#2 · Delta 1297
6:05 PM → 10:58 PM3h 53m nonstop
Local times, typical schedule. Last flown 2026-05-31.
63%
chance on time
- On time (history)
- 61%
- Cancelled
- 3.9%
- Avg arrival delay
- 21 min
- Arrived on time 61% of the time (49 flights, Jun 2025 to May 2026).
- Cancelled 3.9% of the time (2 of 51).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 92 ground stops and delay programs started).
Limited track record · 49 flights
Find Delta 1297 fares Opens this date on Aviasales#3 · JetBlue 1238
11:28 AM → 4:29 PM4h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31.
58%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
- Departs inside AUS's trouble window: 79% of its 92 ground stops and delay programs started between 10 AM and 4 PM.
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Limited track record · 11 flights
Find JetBlue 1238 fares Opens this date on Aviasales#4 · JetBlue 1138
7:10 PM → 12:02 AM3h 57m nonstop
Local times, typical schedule. Last flown 2026-05-20.
56%
chance on time
- On time (history)
- 57%
- Cancelled
- 2.1%
- Avg arrival delay
- 43 min
- Arrived on time 57% of the time (277 flights, Jun 2025 to May 2026).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 92 ground stops and delay programs started).
- 57% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 277 flights
Find JetBlue 1138 fares Opens this date on Aviasales#5 · Delta 1156
1:55 PM → 6:54 PM4h 05m nonstop
Local times, typical schedule. Last flown 2026-05-31.
55%
chance on time
- On time (history)
- 55%
- Cancelled
- 1.6%
- Avg arrival delay
- 45 min
- Arrived on time 55% of the time (299 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 51% on time; Before 9 AM: 88%).
- Departs inside AUS's trouble window: 79% of its 92 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 299 flights
Find Delta 1156 fares Opens this date on Aviasales#6 · Southwest 1576
12:45 PM → 5:45 PM4h 00m nonstop
Local times, typical schedule. Last flown 2026-05-27.
49%
chance on time
- On time (history)
- 69%
- Cancelled
- 0.0%
- Avg arrival delay
- 18 min
- Arrived on time 69% of the time (16 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 51% on time; Before 9 AM: 88%).
- Departs inside AUS's trouble window: 79% of its 92 ground stops and delay programs started between 10 AM and 4 PM.
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Limited track record · 16 flights
Find Southwest 1576 fares Opens this date on Aviasales#7 · Southwest 551
1:45 PM → 6:45 PM4h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31.
43%
chance on time
- On time (history)
- 45%
- Cancelled
- 0.0%
- Avg arrival delay
- 26 min
- Arrived on time 45% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Leaves in this route's least on-time window (Noon to 3 PM: 51% on time; Before 9 AM: 88%).
- Departs inside AUS's trouble window: 79% of its 92 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 31 flights
Find Southwest 551 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines68%
987 flights · 71% on time as flown · 2.7% cancel
- JetBlue56%
344 flights · 56% on time as flown · 1.9% cancel
- Southwest Airlines54%
278 flights · 53% on time as flown · 2.0% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
362 flights · avg delay 17 min
- 9 AM to noon66%
154 flights · avg delay 21 min
- Noon to 3 PM51%
598 flights · avg delay 41 min
- 3 to 6 PM57%
173 flights · avg delay 45 min
- 6 to 9 PM66%
322 flights · avg delay 25 min
Best day: Saturday (78%). Worst: Friday (66%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft38%
- Air traffic control and airport volume33%
- Airline (crew, maintenance, boarding)29%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
AUS to BOS questions
- What time of day is best to fly AUS to BOS?
- Before 9 AM: 88% of flights arrived on time, against 51% for departures noon to 3 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from AUS to BOS?
- Delta, with a season-adjusted 68% chance of operating and arriving on time over 987 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on AUS to BOS?
- May (65% on time); the best was November (78%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from AUS
- BOS to AUS (return)
- AUS to DEN 78%
- AUS to DFW 73%
- AUS to ATL 81%
- AUS to LAX 82%
- AUS to PHX 79%
- AUS to ORD 73%
- AUS to BNA 77%
- AUS to LAS 75%
- AUS to SFO 76%
- AUS to MCO 73%
- AUS to IAH 76%
- AUS to SAN 75%
Most on-time flights from AUS on every route →
Live status: FAA delays and ground stops