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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.

GSP → DCA

Greenville/Greer/Spartanburg to Washington: 1,021 nonstop flights a year

On time (12 months)

68%

Cancelled

5.4%

avg delay 27 min

Best time to leave

Before 9 AM

78% on time vs 50% 6 to 9 PM

Most reliable airline

Republic

66% chance on time

Check GSP to DCA fares

Lowest nonstop fare seen in the next two months: $340 (American 5031 on 2026-10-25). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Best trips

7 nonstop, 12 with 1 connection. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.

  1. Best overall#1 · Nonstop · 1h 43m

    6:30 AM → 8:13 AM

    75%

    arrive on time

    6:30 AM GSP → 8:13 AM DCA1h 43m

    PSA 5031 · sold as American Eagle

    Bombardier CRJ700 · 15–23 yrs old
    78% on time · 3.6% cancel
    Find 6:30 AM flight fares Opens this date on Aviasales

  2. #2 · Nonstop · 1h 41m

    10:41 AM → 12:22 PM

    70%

    arrive on time

    10:41 AM GSP → 12:22 PM DCA1h 41m

    PSA 5248 · sold as American Eagle

    Bombardier CRJ700 · 15–23 yrs old
    74% on time · 4.6% cancel
    Find 10:41 AM flight fares Opens this date on Aviasales

  3. #3 · Nonstop · 1h 35m

    10:50 AM → 12:25 PM

    68%

    arrive on time

    10:50 AM GSP → 12:25 PM DCA1h 35m

    PSA 5241 · sold as American Eagle

    Bombardier CRJ700 · 11–24 yrs old
    71% on time · 4.6% cancel
    Find 10:50 AM flight fares Opens this date on Aviasales

  4. #4 · 1 connection · 5h 28m · one ticket (American)

    5:21 AM → 10:49 AM

    96%

    connections made

    82%

    arrive on time

    5:21 AM GSP → 6:25 AM CLT1h 04m

    PSA 5381 · sold as American Eagle

    Bombardier CRJ900 · 7–12 yrs old
    96% on time · 1.3% cancel
    Connect in CLT · 2h 50m · 99% chance to make it · same ticket: the airline rebooks you if you miss it

    9:15 AM CLT → 10:49 AM DCA1h 34m

    American 2825

    Airbus A319 · 21–27 yrs old
    85% on time · 1.2% cancel
    Find this American trip Look for PSA 5381 + American 2825 on Aviasales

  5. #5 · 1 connection · 5h 29m · one ticket (American)

    5:20 AM → 10:49 AM

    95%

    connections made

    81%

    arrive on time

    5:20 AM GSP → 6:16 AM CLT56m

    American 1490

    Airbus A319 · 20–27 yrs old
    95% on time · 2.0% cancel
    Connect in CLT · 2h 59m · 98% chance to make it · same ticket: the airline rebooks you if you miss it

    9:15 AM CLT → 10:49 AM DCA1h 34m

    American 2825

    Airbus A319 · 21–27 yrs old
    85% on time · 1.2% cancel
    Find this American trip Look for American 1490 + American 2825 on Aviasales

  6. #6 · Nonstop · 1h 36m

    8:13 PM → 9:49 PM

    65%

    arrive on time

    8:13 PM GSP → 9:49 PM DCA1h 36m

    Republic 4612 · sold as American Eagle, Delta Connection or United Express

    Embraer E175 · 12–19 yrs old
    68% on time · 4.1% cancel
    Find 8:13 PM flight fares Opens this date on Aviasales

  7. #7 · 1 connection · 3h 49m · one ticket (American)

    7:00 AM → 10:49 AM

    87%

    connections made

    73%

    arrive on time

    7:00 AM GSP → 8:12 AM CLT1h 12m

    PSA 5654 · sold as American Eagle · also flew as 5434, 5589

    Bombardier CRJ900 · 9–12 yrs old
    89% on time · 1.9% cancel
    Connect in CLT · 1h 03m · 89% chance to make it · same ticket: the airline rebooks you if you miss it

    9:15 AM CLT → 10:49 AM DCA1h 34m

    American 2825

    Airbus A319 · 21–27 yrs old
    85% on time · 1.2% cancel
    Find this American trip Look for PSA 5654 + American 2825 on Aviasales

  8. #8 · 1 connection · 4h 57m · one ticket (American)

    8:02 AM → 12:59 PM

    93%

    connections made

    76%

    arrive on time

    8:02 AM GSP → 9:24 AM CLT1h 22m

    PSA 5256 · sold as American Eagle

    Bombardier CRJ900 · 7–12 yrs old
    91% on time · 1.7% cancel
    Connect in CLT · 1h 49m · 95% chance to make it · same ticket: the airline rebooks you if you miss it

    11:13 AM CLT → 12:59 PM DCA1h 46m

    PSA 5527 · sold as American Eagle

    Bombardier CRJ900 · 7–11 yrs old
    82% on time · 0.9% cancel
    Find this American trip Look for PSA 5256 + PSA 5527 on Aviasales

  9. #9 · Nonstop · 1h 36m

    1:00 PM → 2:36 PM

    64%

    arrive on time

    1:00 PM GSP → 2:36 PM DCA1h 36m

    PSA 5204 · sold as American Eagle

    Bombardier CRJ900 or CRJ700 · 7–25 yrs old
    68% on time · 5.2% cancel
    Find 1:00 PM flight fares Opens this date on Aviasales

  10. #10 · 1 connection · 5h 49m · one ticket (American)

    5:00 AM → 10:49 AM

    92%

    connections made

    78%

    arrive on time

    5:00 AM GSP → 6:15 AM CLT1h 15m

    PSA 5107 · sold as American Eagle

    Bombardier CRJ900 · 7–12 yrs old
    89% on time · 1.9% cancel
    Connect in CLT · 3h 00m · 95% chance to make it · same ticket: the airline rebooks you if you miss it

    9:15 AM CLT → 10:49 AM DCA1h 34m

    American 2825

    Airbus A319 · 21–27 yrs old
    85% on time · 1.2% cancel
    Find this American trip Look for PSA 5107 + American 2825 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.

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)66%

    52 flights · 75% on time as flown · 4.5% cancel

  • PSA Airlines (sold as American Eagle)64%

    963 flights · 67% on time as flown · 5.6% cancel

On time by departure time

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

  • Before 9 AM78%

    362 flights · avg delay 20 min

  • 9 AM to noon71%

    321 flights · avg delay 28 min

  • Noon to 3 PM68%

    37 flights · avg delay 13 min

  • 6 to 9 PM50%

    296 flights · avg delay 38 min

Best day: Saturday (84%). Worst: Thursday (72%).

Smarter routing

Nearby airports that run more on time

  • GSP → BWI 87% chance on time

    Greenville-Spartanburg International Airport to Baltimore/Washington International Thurgood Marshall Airport · 719 flights a year · 30 mi from your airports · yours: 64%

    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