ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe 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.
JAX → IAD
Jacksonville to Dulles: 762 nonstop flights a year
On time (12 months)
88%
Cancelled
1.0%
avg delay 12 min
Best time to leave
9 AM to noon
92% on time vs 39% 3 to 6 PM
Most reliable airline
Republic
90% chance on time
Lowest nonstop fare seen in the next two months: $305 (United 1304 on 2026-10-26). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
6 nonstop, 28 with 1 connection. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.
Best overall#1 · Nonstop · 1h 54m
9:20 AM → 11:14 AM
91%
arrive on time
92% on time · 0.8% cancel9:20 AM JAX → 11:14 AM IAD1h 54m
United 1434
Boeing 737-900ER · 11–22 yrs oldFind United 1434 fares Opens this date on Aviasales#2 · Nonstop · 1h 54m
12:24 PM → 2:18 PM
89%
arrive on time
90% on time · 0.8% cancel12:24 PM JAX → 2:18 PM IAD1h 54m
United 1938
Boeing 737 MAX 9 · 0–17 yrs oldFind United 1938 fares Opens this date on Aviasales#3 · Nonstop · 1h 54m
7:03 PM → 8:57 PM
89%
arrive on time
90% on time · 0.8% cancel7:03 PM JAX → 8:57 PM IAD1h 54m
United 1451
Boeing 737-700 · 24–28 yrs oldFind United 1451 fares Opens this date on Aviasales#4 · Nonstop · 1h 56m
11:48 AM → 1:44 PM
89%
arrive on time
90% on time · 0.8% cancel11:48 AM JAX → 1:44 PM IAD1h 56m
United 2752
Boeing 737 MAX 9 · 0–27 yrs oldFind United 2752 fares Opens this date on Aviasales#5 · Nonstop · 1h 50m
6:50 PM → 8:40 PM
84%
arrive on time
85% on time · 0.8% cancel6:50 PM JAX → 8:40 PM IAD1h 50m
United 1385
Boeing 737-900ER · 4–17 yrs oldFind United 1385 fares Opens this date on Aviasales#6 · Nonstop · 1h 53m
12:51 PM → 2:44 PM
73%
arrive on time
74% on time · 0.7% cancel12:51 PM JAX → 2:44 PM IAD1h 53m
Allegiant 369
Airbus A320 · 9–19 yrs oldFind Allegiant 369 fares Opens this date on Aviasales#7 · 1 connection · 5h 25m · one ticket (American)
6:20 AM → 11:45 AM
95%
connections made
86%
arrive on time
94% on time · 0.7% cancel6:20 AM JAX → 7:48 AM CLT1h 28m
American 1834
Airbus A321 · 9–15 yrs oldConnect in CLT · 2h 25m · 98% chance to make it · same ticket: the airline rebooks you if you miss it90% on time · 2.3% cancel10:13 AM CLT → 11:45 AM IAD1h 32m
Republic 3543 · sold as American Eagle
Embraer E175 · 1–11 yrs oldFind this American trip Look for American 1834 + Republic 3543 on Aviasales#8 · 1 connection · 5h 45m · one ticket (American)
6:00 AM → 11:45 AM
94%
connections made
85%
arrive on time
92% on time · 2.2% cancel6:00 AM JAX → 7:29 AM CLT1h 29m
American 548 · also flew as 1576
Boeing 737-800 or Airbus A321 · 8–26 yrs oldConnect in CLT · 2h 44m · 99% chance to make it · same ticket: the airline rebooks you if you miss it90% on time · 2.3% cancel10:13 AM CLT → 11:45 AM IAD1h 32m
Republic 3543 · sold as American Eagle
Embraer E175 · 1–11 yrs oldFind this American trip Look for American 548 + Republic 3543 on Aviasales#9 · 1 connection · 4h 47m · one ticket (Delta)
7:05 AM → 11:52 AM
91%
connections made
79%
arrive on time
90% on time · 2.2% cancel7:05 AM JAX → 8:24 AM ATL1h 19m
Delta 2450
Boeing 757-200 or Airbus A321 · 6–28 yrs oldConnect in ATL · 1h 41m · 97% chance to make it · same ticket: the airline rebooks you if you miss it87% on time · 3.9% cancel10:05 AM ATL → 11:52 AM IAD1h 47m
Delta 1444
Airbus A319 or A320 · 23–34 yrs oldFind this Delta trip Look for Delta 2450 + Delta 1444 on Aviasales#10 · 1 connection · 5h 19m · one ticket (Delta)
8:45 AM → 2:04 PM
95%
connections made
81%
arrive on time
92% on time · 1.0% cancel8:45 AM JAX → 10:04 AM ATL1h 19m
Delta 2569
Boeing 757-200 or Airbus A321 · 8–29 yrs oldConnect in ATL · 2h 19m · 98% chance to make it · same ticket: the airline rebooks you if you miss it84% on time · 2.1% cancel12:23 PM ATL → 2:04 PM IAD1h 41m
Delta 2135
Airbus A320 · 16–34 yrs oldFind this Delta trip Look for Delta 2569 + Delta 2135 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)90%
128 flights · 94% on time as flown · 1.6% cancel
- United Airlines89%
574 flights · 90% on time as flown · 0.9% cancel
- Allegiant Air71%
60 flights · 52% on time as flown · 0.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon92%
361 flights · avg delay 9 min
- Noon to 3 PM89%
322 flights · avg delay 11 min
- 3 to 6 PM39%
36 flights · avg delay 49 min
- 6 to 9 PM81%
43 flights · avg delay 13 min
Best day: Tuesday (89%). Worst: Friday (80%).
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