Route on-time record
DTW to BWI: most on-time flights and the best time to fly
Detroit (Detroit Metropolitan Wayne County Airport) to Baltimore (Baltimore/Washington International Thurgood Marshall Airport). 2,273 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 1.2% were cancelled. The most reliable flight number was Southwest 4845 at 5:35 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DTW → BWI
Detroit to Baltimore: 2,273 nonstop flights a year
On time (12 months)
81%
Cancelled
1.2%
avg delay 14 min
Best time to leave
Before 9 AM
90% on time vs 68% 6 to 9 PM
Most reliable airline
Spirit
81% chance on time
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 4845
5:35 AM → 7:00 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3027; its record covers all of them.
95%
chance on time
- On time (history)
- 97%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 97% of the time (88 flights, Jun 2025 to May 2026).
- Never cancelled in 88 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 68%).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
Moderate track record · 88 flights
Find Southwest 4845 fares Opens this date on Aviasales#2 · Delta 2341
7:00 AM → 8:33 AM1h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 100%
- Cancelled
- 5.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (19 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 68%).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find Delta 2341 fares Opens this date on Aviasales#3 · Delta 1392
10:10 AM → 11:39 AM1h 29m nonstop
Local times, typical schedule. Last flown 2026-05-06.
89%
chance on time
- On time (history)
- 96%
- Cancelled
- 4.2%
- Avg arrival delay
- 5 min
- Arrived on time 96% of the time (23 flights, Jun 2025 to May 2026).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Delta 1392 fares Opens this date on Aviasales#4 · Delta 1546
8:55 AM → 10:30 AM1h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.3%
- Avg arrival delay
- 7 min
- Arrived on time 86% of the time (292 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 68%).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
Strong track record · 292 flights
Find Delta 1546 fares Opens this date on Aviasales#5 · Delta 2480
3:20 PM → 4:49 PM1h 29m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 78%
- Cancelled
- 1.1%
- Avg arrival delay
- 21 min
- Arrived on time 78% of the time (352 flights, Jun 2025 to May 2026).
- Departs inside DTW's trouble window: 64% of its 28 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 · 352 flights
Find Delta 2480 fares Opens this date on Aviasales#6 · Delta 2715
9:30 PM → 11:01 PM1h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 77%
- Cancelled
- 2.2%
- Avg arrival delay
- 18 min
- Arrived on time 77% of the time (355 flights, Jun 2025 to May 2026).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
Strong track record · 355 flights
Find Delta 2715 fares Opens this date on Aviasales#7 · Frontier 1516
12:55 PM → 2:31 PM1h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 76%
- Cancelled
- 2.4%
- Avg arrival delay
- 18 min
- Arrived on time 76% of the time (122 flights, Jun 2025 to May 2026).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- 50% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 122 flights
Find Frontier 1516 fares Opens this date on Aviasales#8 · Southwest 609
1:20 PM → 2:45 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 52%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 52% of the time (23 flights, Jun 2025 to May 2026).
- Departs inside DTW's trouble window: 64% of its 28 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.
- 51% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 23 flights
Find Southwest 609 fares Opens this date on Aviasales#9 · Southwest 1346
3:35 PM → 5:05 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 3791; its record covers all of them.
67%
chance on time
- On time (history)
- 61%
- Cancelled
- 2.0%
- Avg arrival delay
- 24 min
- Arrived on time 61% of the time (49 flights, Jun 2025 to May 2026).
- Departs inside DTW's trouble window: 64% of its 28 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.
- 75% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 49 flights
Find Southwest 1346 fares Opens this date on Aviasales#10 · Southwest 572
4:05 PM → 5:40 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
65%
chance on time
- On time (history)
- 44%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 44% of the time (16 flights, Jun 2025 to May 2026).
- Departs inside DTW's trouble window: 64% of its 28 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.
- 65% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 16 flights
Find Southwest 572 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Spirit Airlines81%
127 flights · 84% on time as flown · 0.7% cancel
- Delta Air Lines80%
1,205 flights · 81% on time as flown · 1.2% cancel
- Southwest Airlines80%
793 flights · 81% on time as flown · 1.2% cancel
- Frontier Airlines76%
134 flights · 76% on time as flown · 1.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM90%
688 flights · avg delay 6 min
- 9 AM to noon87%
292 flights · avg delay 9 min
- Noon to 3 PM80%
219 flights · avg delay 16 min
- 3 to 6 PM71%
582 flights · avg delay 20 min
- 6 to 9 PM68%
79 flights · avg delay 25 min
- After 9 PM79%
413 flights · avg delay 18 min
Best day: Tuesday (87%). 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)39%
- Late-arriving aircraft30%
- Air traffic control and airport volume29%
- Severe weather2%
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
DTW to BWI questions
- What time of day is best to fly DTW to BWI?
- Before 9 AM: 90% of flights arrived on time, against 68% for departures 6 to 9 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 DTW to BWI?
- Spirit, with a season-adjusted 81% chance of operating and arriving on time over 127 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 DTW to BWI?
- July (71% on time); the best was October (91%), 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 DTW
- BWI to DTW (return)
- DTW to ORD 72%
- DTW to ATL 78%
- DTW to LGA 75%
- DTW to MCO 75%
- DTW to EWR 75%
- DTW to CLT 84%
- DTW to DFW 76%
- DTW to DEN 79%
- DTW to DCA 68%
- DTW to PHL 79%
- DTW to LAS 77%
- DTW to FLL 72%
Live status: FAA delays and ground stops