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.

RDU → BWI

Raleigh/Durham to Baltimore: 1,811 nonstop flights a year

On time (12 months)

85%

Cancelled

2.4%

avg delay 10 min

Best time to leave

Before 9 AM

96% on time vs 69% 6 to 9 PM

Most reliable airline

Southwest

83% chance on time

Check RDU to BWI fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Best trips

12 nonstop. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.

  1. Best overall#1 · Nonstop · 1h 05m

    6:00 AM → 7:05 AM

    93%

    arrive on time

    6:00 AM RDU → 7:05 AM BWI1h 05m

    Southwest 2577

    Boeing 737-700 · 4–23 yrs old
    95% on time · 2.5% cancel
    Find Southwest 2577 fares Opens this date on Aviasales

  2. #2 · Nonstop · 1h 10m

    5:35 AM → 6:45 AM

    92%

    arrive on time

    5:35 AM RDU → 6:45 AM BWI1h 10m

    Southwest 3984

    Boeing 737-700 · 6–22 yrs old
    94% on time · 1.8% cancel
    Find Southwest 3984 fares Opens this date on Aviasales

  3. #3 · Nonstop · 1h 10m

    10:10 AM → 11:20 AM

    90%

    arrive on time

    10:10 AM RDU → 11:20 AM BWI1h 10m

    Southwest 3985 · also flew as 590

    Boeing 737-700 or 737 MAX 8 · 4–22 yrs old
    92% on time · 1.5% cancel
    Find Southwest 3985 fares Opens this date on Aviasales

  4. #4 · Nonstop · 1h 10m

    2:00 PM → 3:10 PM

    88%

    arrive on time

    2:00 PM RDU → 3:10 PM BWI1h 10m

    Southwest 3986

    Boeing 737-700 or 737 MAX 8 · 3–22 yrs old
    90% on time · 1.8% cancel
    Find Southwest 3986 fares Opens this date on Aviasales

  5. #5 · Nonstop · 1h 10m

    12:00 PM → 1:10 PM

    87%

    arrive on time

    12:00 PM RDU → 1:10 PM BWI1h 10m

    Southwest 2223

    Boeing 737 MAX 8 or 737-800 · 2–14 yrs old
    89% on time · 2.3% cancel
    Find Southwest 2223 fares Opens this date on Aviasales

  6. #6 · Nonstop · 1h 15m

    4:50 PM → 6:05 PM

    84%

    arrive on time

    4:50 PM RDU → 6:05 PM BWI1h 15m

    Southwest 1283

    Boeing 737-700 · 3–23 yrs old
    85% on time · 1.8% cancel
    Find Southwest 1283 fares Opens this date on Aviasales

  7. #7 · Nonstop · 1h 10m

    12:45 PM → 1:55 PM

    83%

    arrive on time

    12:45 PM RDU → 1:55 PM BWI1h 10m

    Southwest 187

    Boeing 737-700 · 17–22 yrs old
    85% on time · 2.2% cancel
    Find Southwest 187 fares Opens this date on Aviasales

  8. #8 · Nonstop · 1h 15m

    7:50 PM → 9:05 PM

    77%

    arrive on time

    7:50 PM RDU → 9:05 PM BWI1h 15m

    Southwest 1481

    Boeing 737 MAX 8 or 737-800 · 1–22 yrs old
    78% on time · 1.8% cancel
    Find Southwest 1481 fares Opens this date on Aviasales

  9. #9 · Nonstop · 1h 10m

    7:25 PM → 8:35 PM

    72%

    arrive on time

    7:25 PM RDU → 8:35 PM BWI1h 10m

    Southwest 3890

    Boeing 737 MAX 8 or 737-800 · 2–18 yrs old
    74% on time · 2.3% cancel
    Find Southwest 3890 fares Opens this date on Aviasales

  10. #10 · Nonstop · 1h 10m

    5:50 PM → 7:00 PM

    72%

    arrive on time

    5:50 PM RDU → 7:00 PM BWI1h 10m

    Southwest 1078

    Boeing 737-700 or 737 MAX 8 · 3–23 yrs old
    74% on time · 2.6% cancel
    Find Southwest 1078 fares Opens this date on Aviasales

Aircraft and ages come from the planes each flight number actually flew in the last 3 months of data (FAA registry build years); airlines can swap planes.

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines83%

    1,790 flights · 85% on time as flown · 2.4% cancel

On time by departure time

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

  • Before 9 AM96%

    465 flights · avg delay 4 min

  • 9 AM to noon94%

    295 flights · avg delay 3 min

  • Noon to 3 PM90%

    312 flights · avg delay 8 min

  • 3 to 6 PM78%

    344 flights · avg delay 18 min

  • 6 to 9 PM69%

    395 flights · avg delay 19 min

Best day: Saturday (89%). Worst: Sunday (81%).

Smarter routing

Nearby airports that run more on time

  • RDU → IAD 85% chance on time

    Raleigh-Durham International Airport to Washington Dulles International Airport · 1,335 flights a year · 45 mi from your airports · yours: 83%

    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