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4 nonstop, 36 with 1 connection, 6 with 2 · ranked by overall best · 7 hidden by your Most reliable time setting (they leave at other times of day) · showing the top 3
Most reliable time: morning departures (5–11 AM), the window with the best on-time odds for this trip. Turn off “Most reliable” under Departure time in Advanced settings to see every time.
39 matching trips
Why this is our top pick
- This morning flight leaves in the most reliable time of day on this route: its best departures have a 75% reliability rating vs 61% for afternoon departures.
- Compared with the next-best option (Delta 2579 + Delta 387 on the Boeing 737-900ER or Airbus A321), it flies a newer plane (about 3 vs 9 years old).
- Legroom was comparable across the flights we compared (30–31 in), so it didn't set them apart.
7:28 AM1:16 PMBWI → SLC
Delta · DL 2579 / DL 387
7h 39m1 stop
1h 25m in ATL
One ticket
84%arrive on time93% connections madeCheck fares- 6:00 AM1:16 PM
BWI → SLC
Delta · DL 2950 / DL 387
9h 07m1 stop
2h 52m in ATL
One ticket
88%arrive on time96% connections madeCheck fares
Aircraft and legroom reflect the planes each flight has flown recently. Airlines can swap planes and seat maps change, so check the airline’s seat map when you book.
BWI → SLC
Baltimore to Salt Lake City: 770 nonstop flights a year
On time (12 months)
78%
Cancelled
1.6%
avg delay 14 min
Best time to leave
Before 9 AM
83% on time vs 59% 6 to 9 PM
Most reliable airline
Delta
80% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines80%
360 flights · 81% on time as flown · 1.6% cancel
- Southwest Airlines74%
410 flights · 74% on time as flown · 1.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM83%
427 flights · avg delay 13 min
- 9 AM to noon77%
105 flights · avg delay 11 min
- Noon to 3 PM74%
143 flights · avg delay 15 min
- 6 to 9 PM59%
89 flights · avg delay 24 min
Best day: Tuesday (87%). Worst: Saturday (70%).
Smarter routing
Nearby airports that run more on time
IAD → SLC 82% chance on time
Washington Dulles International Airport to Salt Lake City International Airport · 715 flights a year · 45 mi from your airports · yours: 76%
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