Route on-time record

ATL to TYS: most on-time flights and the best time to fly

Atlanta (Hartsfield Jackson Atlanta International Airport) to Knoxville/Maryville (McGhee Tyson Airport). 1,721 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 2.3% were cancelled. The most reliable flight number was Delta 1290 at 8:37 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

ATL → TYS

Atlanta to Knoxville/Maryville: 1,721 nonstop flights a year

On time (12 months)

80%

Cancelled

2.3%

avg delay 12 min

Best time to leave

9 AM to noon

88% on time vs 71% 3 to 6 PM

Most reliable airline

Delta

78% chance on time

Check ATL to TYS fares

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 1290
8:37 AM → 9:34 AM57m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
On time (history)
97%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 97% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Delta 1290 fares Opens this date on Aviasales
#2 · Delta 724
12:15 PM → 1:10 PM55m nonstop
Local times, typical schedule. Last flown 2026-05-29.
86%
chance on time
On time (history)
100%
Cancelled
5.6%
Avg arrival delay
0 min
- Arrived on time 100% of the time (17 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Short track record (17 flights), so its score leans on the airline's record at this hour.
Limited track record · 17 flights
Find Delta 724 fares Opens this date on Aviasales
#3 · Delta 1743
10:15 AM → 11:17 AM1h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
On time (history)
87%
Cancelled
1.4%
Avg arrival delay
8 min
- Arrived on time 87% of the time (282 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 88% on time; 3 to 6 PM: 71%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 282 flights
Find Delta 1743 fares Opens this date on Aviasales
#4 · Delta 2496
2:59 PM → 3:52 PM53m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
On time (history)
84%
Cancelled
3.2%
Avg arrival delay
9 min
- Arrived on time 84% of the time (92 flights, Jun 2025 to May 2026).
- Cancelled 3.2% of the time (3 of 95).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 92 flights
Find Delta 2496 fares Opens this date on Aviasales
#5 · Delta 3072
11:05 PM → 11:57 PM55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
On time (history)
78%
Cancelled
2.7%
Avg arrival delay
16 min
- Arrived on time 78% of the time (320 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 320 flights
Find Delta 3072 fares Opens this date on Aviasales
#6 · Delta 1148
3:15 PM → 4:06 PM51m nonstop
Local times, typical schedule. Last flown 2026-04-12.
75%
chance on time
On time (history)
74%
Cancelled
0.0%
Avg arrival delay
11 min
- Arrived on time 74% of the time (50 flights, Jun 2025 to May 2026).
- Never cancelled in 50 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 71% on time; 9 AM to noon: 88%).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 50 flights
Find Delta 1148 fares Opens this date on Aviasales
#7 · Delta 3042
4:51 PM → 5:45 PM54m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
On time (history)
77%
Cancelled
4.5%
Avg arrival delay
16 min
- Arrived on time 77% of the time (169 flights, Jun 2025 to May 2026).
- Cancelled 4.5% of the time (8 of 177).
- Leaves in this route's least on-time window (3 to 6 PM: 71% on time; 9 AM to noon: 88%).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 169 flights
Find Delta 3042 fares Opens this date on Aviasales
#8 · Delta 2571
4:15 PM → 5:11 PM56m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Delta 1834; its record covers all of them.
70%
chance on time
On time (history)
75%
Cancelled
2.4%
Avg arrival delay
15 min
- Arrived on time 75% of the time (40 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 71% on time; 9 AM to noon: 88%).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (40 flights), so its score leans on the airline's record at this hour.
Limited track record · 40 flights
Find Delta 2571 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Delta Air Lines78%
1,721 flights · 80% on time as flown · 2.3% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM87%
88 flights · avg delay 7 min
9 AM to noon88%
295 flights · avg delay 8 min
Noon to 3 PM83%
549 flights · avg delay 10 min
3 to 6 PM71%
418 flights · avg delay 19 min
After 9 PM78%
332 flights · avg delay 16 min

Best day: Wednesday (86%). Worst: Friday (79%).

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

Airline (crew, maintenance, boarding)58%
Late-arriving aircraft26%
Air traffic control and airport volume10%
Severe weather6%

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

Finding the most reliable connections from ATL to TYS…

ATL to TYS questions

What time of day is best to fly ATL to TYS?: 9 AM to noon: 88% of flights arrived on time, against 71% for departures 3 to 6 PM.
Which airline is most on time from ATL to TYS?: Delta, with a season-adjusted 78% chance of operating and arriving on time over 1,721 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 ATL to TYS?: July (72% on time); the best was October (92%), 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.

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