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Ranking & search details
9 nonstop, 35 with 1 connection, 6 with 2 · ranked by overall best · 9 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.
Fares seen on this date: nonstop from 178 · any route from 81 (recent searches, one way, per person; each card opens the live price)
41 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 an 87% reliability rating vs 70% for afternoon departures.
- It has the same 31 in of legroom as the next-best option (Southwest 1167 on the Boeing 737 MAX 8); it arrives on time 2 points more often.
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 → LAS
Baltimore to Las Vegas: 1,846 nonstop flights a year
On time (12 months)
80%
Cancelled
1.1%
avg delay 13 min
Best time to leave
Before 9 AM
92% on time vs 63% after 9 PM
Most reliable airline
Southwest
78% chance on time
Lowest nonstop fare seen in the next two months: $178 (Southwest 4635 on 2026-11-09). 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.
- Southwest Airlines78%
1,635 flights · 79% on time as flown · 1.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM92%
613 flights · avg delay 4 min
- 9 AM to noon87%
227 flights · avg delay 11 min
- Noon to 3 PM73%
247 flights · avg delay 16 min
- 3 to 6 PM72%
281 flights · avg delay 19 min
- 6 to 9 PM70%
410 flights · avg delay 20 min
- After 9 PM63%
68 flights · avg delay 17 min
Best day: Tuesday (80%). Worst: Friday (74%).
Smarter routing
Nearby airports that run more on time
IAD → LAS 84% chance on time
Washington Dulles International Airport to Harry Reid International Airport · 1,129 flights a year · 45 mi from your airports · yours: 79%
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