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Reliable Flight Search

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The insider way to pick a flight: on-time records, the odds each connection is made, legroom and the age of the planes that actually fly the route. Things airline sites and the big booking sites don’t show you. US airlines and airports.

Find me the most reliable flights fromtoonreturning(optional)

BWI → CHS

Baltimore to Charleston: 1,253 nonstop flights a year

On time (12 months)

80%

Cancelled

1.4%

avg delay 13 min

Best time to leave

Before 9 AM

90% on time vs 70% 3 to 6 PM

Most reliable airline

Southwest

79% chance on time

Check BWI to CHS fares

Lowest nonstop fare seen in the next two months: $324 (Southwest 972 on 2026-10-26). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Best trips

7 nonstop, 16 with 1 connection · ranked by overall best · published legroom for 7 of 23

  1. Top pick#1 · Nonstop · 1h 55m

    8:20 AM → 10:15 AM

    82

    score

    86%

    arrive on time

    8:20 AM BWI → 10:15 AM CHS1h 55m

    Southwest 297

    Boeing 737 MAX 8 or 737-800 · 1–13 yrs oldLegroom 31–34 in · 15.5–17.8 in wide · Economy (all seating types)
    87% on time · 1.2% cancel
    Find Southwest 297 fares Opens this date on Aviasales

  2. #2 · Nonstop · 1h 50m

    8:10 AM → 10:00 AM

    75

    score

    88%

    arrive on time

    8:10 AM BWI → 10:00 AM CHS1h 50m

    Southwest 1448

    Boeing 737-700 or 737 MAX 8 · 1–23 yrs oldLegroom 31–36 in · 15.5–17.8 in wide · Economy (all seating types)
    89% on time · 1.2% cancel
    Find Southwest 1448 fares Opens this date on Aviasales

  3. #3 · Nonstop · 1h 45m

    11:50 AM → 1:35 PM

    72

    score

    81%

    arrive on time

    11:50 AM BWI → 1:35 PM CHS1h 45m

    Southwest 1086 · also flew as 2795

    Boeing 737 MAX 8 or 737-700 · 2–22 yrs oldLegroom 31–36 in · 15.5–17.8 in wide · Economy (all seating types)
    82% on time · 1.0% cancel
    Find Southwest 1086 fares Opens this date on Aviasales

  4. #4 · Nonstop · 1h 45m

    7:40 PM → 9:30 PM

    62

    score

    77%

    arrive on time

    7:40 PM BWI → 9:30 PM CHS1h 45m

    Southwest 3144

    Boeing 737-700 or 737 MAX 8 · 3–22 yrs oldLegroom 31–36 in · 15.5–17.8 in wide · Economy (all seating types)
    78% on time · 1.1% cancel
    Find Southwest 3144 fares Opens this date on Aviasales

  5. #5 · Nonstop · 1h 45m

    5:25 PM → 7:10 PM

    62

    score

    74%

    arrive on time

    5:25 PM BWI → 7:10 PM CHS1h 45m

    Southwest 4718

    Boeing 737 MAX 8 or 737-800 · 1–22 yrs oldLegroom 31–36 in · 15.5–17.8 in wide · Economy (all seating types)
    75% on time · 1.4% cancel
    Find Southwest 4718 fares Opens this date on Aviasales

  6. #6 · 1 connection · 5h 22m · one ticket (American)

    5:05 AM → 10:27 AM

    55

    score

    94%

    connections made

    83%

    arrive on time

    5:05 AM BWI → 6:36 AM CLT1h 31m

    American 1708 · also flew as 2224

    Boeing 737-800 or Airbus A319 · 8–27 yrs oldLegroom 30 in · 16.6–17.8 in wide · Main Cabin · covers 66% of recent planes
    95% on time · 2.2% cancel
    Connect in CLT · 2h 24m · 98% chance to make it · same ticket: the airline rebooks you if you miss it

    9:00 AM CLT → 10:27 AM CHS1h 27m

    PSA 5150 · sold as American Eagle

    Bombardier CRJ900 · 10–12 yrs oldLegroom: not published for this aircraft and cabin yet
    89% on time · 1.7% cancel
    Find this American trip Look for American 1708 + PSA 5150 on Aviasales

  7. #7 · Nonstop · 1h 45m

    8:00 PM → 9:45 PM

    55

    score

    69%

    arrive on time

    8:00 PM BWI → 9:45 PM CHS1h 45m

    Southwest 1286

    Boeing 737 MAX 8 or 737-800 · 1–21 yrs oldLegroom 31–36 in · 15.5–17.8 in wide · Economy (all seating types)
    70% on time · 1.2% cancel
    Find Southwest 1286 fares Opens this date on Aviasales

  8. #8 · 1 connection · 6h 30m · one ticket (American)

    6:12 AM → 12:42 PM

    54

    score

    94%

    connections made

    86%

    arrive on time

    6:12 AM BWI → 7:49 AM CLT1h 37m

    American 2670

    Boeing 737-800 · 9–26 yrs oldLegroom 30–31 in · 16.3–18.7 in wide · Main Cabin · covers 93% of recent planes
    91% on time · 2.0% cancel
    Connect in CLT · 3h 36m · 99% chance to make it · same ticket: the airline rebooks you if you miss it

    11:25 AM CLT → 12:42 PM CHS1h 17m

    Envoy 3752 · sold as American Eagle

    Embraer E175 · 5–11 yrs oldLegroom: not published for this aircraft and cabin yet
    91% on time · 2.8% cancel
    Find this American trip Look for American 2670 + Envoy 3752 on Aviasales

  9. #9 · 1 connection · 4h 15m · one ticket (American)

    6:12 AM → 10:27 AM

    53

    score

    89%

    connections made

    79%

    arrive on time

    6:12 AM BWI → 7:49 AM CLT1h 37m

    American 2670

    Boeing 737-800 · 9–26 yrs oldLegroom 30–31 in · 16.3–18.7 in wide · Main Cabin · covers 93% of recent planes
    91% on time · 2.0% cancel
    Connect in CLT · 1h 11m · 92% chance to make it · same ticket: the airline rebooks you if you miss it

    9:00 AM CLT → 10:27 AM CHS1h 27m

    PSA 5150 · sold as American Eagle

    Bombardier CRJ900 · 10–12 yrs oldLegroom: not published for this aircraft and cabin yet
    89% on time · 1.7% cancel
    Find this American trip Look for American 2670 + PSA 5150 on Aviasales

  10. #10 · 1 connection · 5h 56m · one ticket (American)

    6:46 AM → 12:42 PM

    52

    score

    92%

    connections made

    84%

    arrive on time

    6:46 AM BWI → 8:25 AM CLT1h 39m

    American 1588

    Boeing 737-800 · 11–27 yrs oldLegroom 30 in · 16.6–17.8 in wide · Main Cabin · covers 91% of recent planes
    89% on time · 2.0% cancel
    Connect in CLT · 3h 00m · 97% chance to make it · same ticket: the airline rebooks you if you miss it

    11:25 AM CLT → 12:42 PM CHS1h 17m

    Envoy 3752 · sold as American Eagle

    Embraer E175 · 5–11 yrs oldLegroom: not published for this aircraft and cabin yet
    91% on time · 2.8% cancel
    Find this American trip Look for American 1588 + Envoy 3752 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. Legroom is the seat pitch the airline or a seat-map source publishes for that aircraft and cabin; we never estimate it, and seat maps change, so check the airline’s seat map when you book.

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines79%

    1,232 flights · 80% on time as flown · 1.5% cancel

On time by departure time

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

  • Before 9 AM90%

    328 flights · avg delay 4 min

  • 9 AM to noon85%

    157 flights · avg delay 7 min

  • Noon to 3 PM83%

    178 flights · avg delay 10 min

  • 3 to 6 PM70%

    231 flights · avg delay 19 min

  • 6 to 9 PM73%

    357 flights · avg delay 22 min

Best day: Tuesday (79%). Worst: Sunday (74%).

Smarter routing

Nearby airports that run more on time

  • IAD → CHS 85% chance on time

    Washington Dulles International Airport to Charleston International Airport · 761 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