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Ranking & search details
2 nonstop, 38 with 1 connection, 6 with 2 · ranked by overall best · 10 hidden by your Most reliable time setting (they leave at other times of day) · showing the top 3
Most reliable time: morning departures (5–11 AM), the window with the best on-time odds for this trip. Turn off “Most reliable” under Departure time in Advanced settings to see every time.
Fares seen on this date: nonstop from 364 · any route from 312 (recent searches, one way, per person; each card opens the live price)
36 matching trips
Why this is our top pick
- This morning flight leaves in the most reliable time of day on this route: its best departures have a 75% reliability rating vs 67% for midday departures.
- It has 1 more inch of legroom on the Boeing 737-800 (31 in vs 30 in on the next-best option (Delta 1354 + Delta 387 on the Airbus A220-300)).
7:18 AM1:16 PMIAD → SLC
Delta · DL 1354 / DL 387
7h 52m1 stop
1h 38m in ATL
One ticket
80%arrive on time88% connections madeCheck fares
7:00 AM4:01 PMIAD → SLC
United · UA 325 / OO 5526
11h 01m1 stop
3h 34m in LAX
One ticket
90%arrive on time98% connections madeCheck fares
Aircraft and legroom reflect the planes each flight has flown recently. Airlines can swap planes and seat maps change, so check the airline’s seat map when you book.
IAD → SLC
Dulles to Salt Lake City: 715 nonstop flights a year
On time (12 months)
82%
Cancelled
1.0%
avg delay 17 min
Best time to leave
No clear winner
Most reliable airline
Delta
82% chance on time
Lowest nonstop fare seen in the next two months: $364 (United 2410 on 2026-10-28). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines82%
365 flights · 83% on time as flown · 1.5% cancel
- United Airlines81%
350 flights · 82% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM84%
418 flights · avg delay 18 min
- 3 to 6 PM81%
297 flights · avg delay 15 min
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