ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
ATL → BWI
Atlanta to Baltimore: 5,430 nonstop flights a year
On time (12 months)
74%
Cancelled
2.2%
avg delay 18 min
Best time to leave
Before 9 AM
90% on time vs 61% after 9 PM
Most reliable airline
Southwest
76% chance on time
Lowest nonstop fare seen in the next two months: $23 (Frontier 2634 on 2026-11-17). 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 · Southwest 1719
7:45 AM → 9:35 AM1h 50m nonstop
Local times, typical schedule. Last flown 2026-04-06.
89%
chance on time
- On time (history)
- 94%
- Cancelled
- 3.0%
- Avg arrival delay
- 6 min
- Arrived on time 94% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; After 9 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Limited track record · 32 flights
Find Southwest 1719 fares Opens this date on Aviasales#2 · Delta 1592
7:51 AM → 9:39 AM1h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 89%
- Cancelled
- 2.0%
- Avg arrival delay
- 5 min
- Arrived on time 89% of the time (250 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; After 9 PM: 61%).
- 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 · 250 flights
Find Delta 1592 fares Opens this date on Aviasales#3 · Southwest 207
6:45 AM → 8:35 AM1h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 91% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; After 9 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Limited track record · 55 flights
Find Southwest 207 fares Opens this date on Aviasales#4 · Delta 801
9:04 AM → 10:44 AM1h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 89%
- Cancelled
- 2.1%
- Avg arrival delay
- 7 min
- Arrived on time 89% of the time (324 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 · 324 flights
Find Delta 801 fares Opens this date on Aviasales#5 · Southwest 254
10:00 AM → 11:55 AM1h 55m nonstop
Local times, typical schedule. Last flown 2026-04-06.
85%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 93% of the time (15 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 (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 254 fares Opens this date on Aviasales#6 · Southwest 392
10:55 AM → 12:45 PM1h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 89% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 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 (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Southwest 392 fares Opens this date on Aviasales#7 · Delta 2711
11:45 AM → 1:31 PM1h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 85%
- Cancelled
- 2.3%
- Avg arrival delay
- 9 min
- Arrived on time 85% of the time (333 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 · 333 flights
Find Delta 2711 fares Opens this date on Aviasales#8 · Southwest 820
1:55 PM → 3:40 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-06.
79%
chance on time
- On time (history)
- 78%
- Cancelled
- 3.0%
- Avg arrival delay
- 12 min
- Arrived on time 78% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 32 flights
Find Southwest 820 fares Opens this date on Aviasales#9 · Delta 2799
1:54 PM → 3:35 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 77%
- Cancelled
- 2.7%
- Avg arrival delay
- 11 min
- Arrived on time 77% of the time (291 flights, Jun 2025 to May 2026).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 291 flights
Find Delta 2799 fares Opens this date on Aviasales#10 · Delta 2805
4:09 PM → 5:54 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-12.
74%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 80% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 30 flights
Find Delta 2805 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines76%
1,577 flights · 78% on time as flown · 2.5% cancel
- Spirit Airlines76%
167 flights · 77% on time as flown · 1.7% cancel
- Delta Air Lines74%
2,838 flights · 76% on time as flown · 2.1% cancel
- Frontier Airlines59%
848 flights · 59% on time as flown · 2.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM90%
947 flights · avg delay 6 min
- 9 AM to noon83%
915 flights · avg delay 11 min
- Noon to 3 PM77%
921 flights · avg delay 14 min
- 3 to 6 PM67%
1,018 flights · avg delay 22 min
- 6 to 9 PM63%
839 flights · avg delay 30 min
- After 9 PM61%
790 flights · avg delay 30 min
Best day: Wednesday (82%). Worst: Sunday (69%).
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