Skip to content

All Products

Aviation Intelligence

Alerts & Airspace

Free Pilot Tools & Widgets

RC Aviation

Games & Learning

Weather Research & More

Pilot Resources

My Airports

Your shortcuts, saved on this device. Search to add an airport.

No airports saved yet. Add the fields you visit most.

Ask ATIS

ATIS Alerts Smart Flight Search

Find the flight least likely to be delayed

Beta

We 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.

BWI → BNA

Baltimore to Nashville: 1,856 nonstop flights a year

On time (12 months)

80%

Cancelled

1.8%

avg delay 13 min

Best time to leave

Before 9 AM

95% on time vs 68% after 9 PM

Most reliable airline

Southwest

79% chance on time

Check BWI to BNA fares

Lowest nonstop fare seen in the next two months: $204 (Southwest 225 on 2026-10-26). 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. #1 · Southwest 1050

    8:10 AM → 9:10 AM2h 00m nonstop

    Local times, typical schedule. Last flown 2026-05-30.

    92%

    chance on time

    On time (history)
    97%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 97% of the time (31 flights, Jun 2025 to May 2026).
    • Never cancelled in 31 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; After 9 PM: 68%).
    • Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).

    Limited track record · 31 flights

    Find Southwest 1050 fares Opens this date on Aviasales

  2. #2 · Southwest 1051

    9:40 AM → 10:40 AM2h 00m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    90%

    chance on time

    On time (history)
    93%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 93% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 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 1051 fares Opens this date on Aviasales

  3. #3 · Southwest 2659

    6:15 AM → 7:10 AM1h 55m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2652; its record covers all of them.

    87%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 87% of the time (79 flights, Jun 2025 to May 2026).
    • Never cancelled in 80 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; After 9 PM: 68%).
    • Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).

    Moderate track record · 79 flights

    Find Southwest 2659 fares Opens this date on Aviasales

  4. #4 · Southwest 236

    7:20 AM → 8:25 AM2h 05m nonstop

    Local times, typical schedule. Last flown 2026-04-01.

    83%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    18 min
    • Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; After 9 PM: 68%).
    • Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 236 fares Opens this date on Aviasales

  5. #5 · Southwest 1464

    9:20 AM → 10:25 AM2h 05m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    82%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 73% of the time (15 flights, Jun 2025 to May 2026).
    • Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 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 1464 fares Opens this date on Aviasales

  6. #6 · Southwest 2186

    8:55 PM → 10:00 PM2h 05m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    76%

    chance on time

    On time (history)
    69%
    Cancelled
    13.3%
    Avg arrival delay
    32 min
    • Arrived on time 69% of the time (13 flights, Jun 2025 to May 2026).
    • Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).
    • 88% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (13 flights), so its score leans on the airline's record at this hour.

    Limited track record · 13 flights

    Find Southwest 2186 fares Opens this date on Aviasales

  7. #7 · Southwest 3929

    4:45 PM → 5:50 PM2h 05m nonstop

    Local times, typical schedule. Last flown 2026-04-04.

    75%

    chance on time

    On time (history)
    77%
    Cancelled
    0.0%
    Avg arrival delay
    15 min
    • Arrived on time 77% of the time (13 flights, Jun 2025 to May 2026).
    • Departs inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
    • Lands inside BNA's trouble window: 64% of its 44 ground stops and delay programs started between 1 PM and 7 PM.
    • Short track record (13 flights), so its score leans on the airline's record at this hour.

    Limited track record · 13 flights

    Find Southwest 3929 fares Opens this date on Aviasales

  8. #8 · Southwest 3363

    1:55 PM → 2:55 PM2h 00m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    73%

    chance on time

    On time (history)
    76%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 76% of the time (33 flights, Jun 2025 to May 2026).
    • Never cancelled in 33 scheduled flights.
    • Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).
    • Lands inside BNA's trouble window: 64% of its 44 ground stops and delay programs started between 1 PM and 7 PM.

    Limited track record · 33 flights

    Find Southwest 3363 fares Opens this date on Aviasales

  9. #9 · Southwest 1283

    6:40 PM → 7:45 PM2h 05m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    72%

    chance on time

    On time (history)
    63%
    Cancelled
    0.0%
    Avg arrival delay
    27 min
    • Arrived on time 63% of the time (30 flights, Jun 2025 to May 2026).
    • Never cancelled in 30 scheduled flights.
    • Departs inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (30 flights), so its score leans on the airline's record at this hour.

    Limited track record · 30 flights

    Find Southwest 1283 fares Opens this date on Aviasales

  10. #10 · Southwest 3317

    6:50 PM → 8:00 PM2h 10m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    72%

    chance on time

    On time (history)
    67%
    Cancelled
    3.6%
    Avg arrival delay
    29 min
    • Arrived on time 67% of the time (27 flights, Jun 2025 to May 2026).
    • Departs inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (27 flights), so its score leans on the airline's record at this hour.

    Limited track record · 27 flights

    Find Southwest 3317 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines79%

    1,763 flights · 81% on time as flown · 1.8% cancel

  • Spirit Airlines76%

    93 flights · 74% on time as flown · 2.4% cancel

On time by departure time

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

  • Before 9 AM95%

    418 flights · avg delay 3 min

  • 9 AM to noon89%

    332 flights · avg delay 6 min

  • Noon to 3 PM71%

    318 flights · avg delay 16 min

  • 3 to 6 PM75%

    301 flights · avg delay 21 min

  • 6 to 9 PM73%

    357 flights · avg delay 17 min

  • After 9 PM68%

    130 flights · avg delay 22 min

Best day: Wednesday (82%). Worst: Sunday (76%).

Smarter routing

Nearby airports that run more on time

  • IAD → BNA 82% chance on time

    Washington Dulles International Airport to Nashville International Airport · 1,039 flights a year · 45 mi from your airports · yours: 79%

    Rank flightsFares

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