Route on-time record
DFW to SEA: most on-time flights and the best time to fly
Dallas-Fort Worth (Dallas Fort Worth International Airport) to Seattle (Seattle–Tacoma International Airport). 5,238 nonstop flights in Jun 2025 to May 2026, 69% arrived within 15 minutes and 2.2% were cancelled. The most reliable flight number was Alaska 584 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DFW → SEA
Dallas-Fort Worth to Seattle: 5,238 nonstop flights a year
On time (12 months)
69%
Cancelled
2.2%
avg delay 20 min
Best time to leave
Before 9 AM
79% on time vs 46% after 9 PM
Most reliable airline
Delta
77% chance on time
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Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Alaska 584
6:00 AM → 8:29 AM4h 29m nonstop
Local times, typical schedule. Last flown 2026-04-21.
84%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 94% of the time (34 flights, Jun 2025 to May 2026).
- Never cancelled in 34 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; After 9 PM: 46%).
- Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
Limited track record · 34 flights
Find Alaska 584 fares Opens this date on Aviasales#2 · Delta 804
6:30 AM → 8:43 AM4h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 86%
- Cancelled
- 2.5%
- Avg arrival delay
- 11 min
- Arrived on time 86% of the time (354 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; After 9 PM: 46%).
- Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
Strong track record · 354 flights
Find Delta 804 fares Opens this date on Aviasales#3 · American 707
7:15 AM → 9:35 AM4h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 84%
- Cancelled
- 2.7%
- Avg arrival delay
- 11 min
- Arrived on time 84% of the time (291 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; After 9 PM: 46%).
- Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
Strong track record · 291 flights
Find American 707 fares Opens this date on Aviasales#4 · American 717
10:53 AM → 1:15 PM4h 22m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 81%
- Cancelled
- 3.6%
- Avg arrival delay
- 13 min
- Arrived on time 81% of the time (132 flights, Jun 2025 to May 2026).
- Cancelled 3.6% of the time (5 of 138).
- Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
Moderate track record · 132 flights
Find American 717 fares Opens this date on Aviasales#5 · Alaska 534
6:20 AM → 8:45 AM4h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 543; its record covers all of them.
75%
chance on time
- On time (history)
- 76%
- Cancelled
- 1.5%
- Avg arrival delay
- 14 min
- Arrived on time 76% of the time (320 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; After 9 PM: 46%).
- Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
Strong track record · 320 flights
Find Alaska 534 fares Opens this date on Aviasales#6 · Alaska 415
3:36 PM → 6:04 PM4h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 368; its record covers all of them.
75%
chance on time
- On time (history)
- 77%
- Cancelled
- 2.2%
- Avg arrival delay
- 15 min
- Arrived on time 77% of the time (361 flights, Jun 2025 to May 2026).
- Departs inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Strong track record · 361 flights
Find Alaska 415 fares Opens this date on Aviasales#7 · American 767
8:20 AM → 10:48 AM4h 29m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 74%
- Cancelled
- 2.0%
- Avg arrival delay
- 15 min
- Arrived on time 74% of the time (349 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; After 9 PM: 46%).
- Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
Strong track record · 349 flights
Find American 767 fares Opens this date on Aviasales#8 · Alaska 365
9:00 AM → 11:32 AM4h 32m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 573; its record covers all of them.
72%
chance on time
- On time (history)
- 72%
- Cancelled
- 1.4%
- Avg arrival delay
- 15 min
- Arrived on time 72% of the time (483 flights, Jun 2025 to May 2026).
- Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
Strong track record · 483 flights
Find Alaska 365 fares Opens this date on Aviasales#9 · Delta 803
4:27 PM → 6:50 PM4h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
- On time (history)
- 74%
- Cancelled
- 1.8%
- Avg arrival delay
- 31 min
- Arrived on time 74% of the time (160 flights, Jun 2025 to May 2026).
- Departs inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Moderate track record · 160 flights
Find Delta 803 fares Opens this date on Aviasales#10 · American 757
1:33 PM → 3:51 PM4h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
chance on time
- On time (history)
- 74%
- Cancelled
- 3.0%
- Avg arrival delay
- 16 min
- Arrived on time 74% of the time (352 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (11 of 364).
- Departs inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 352 flights
Find American 757 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines77%
710 flights · 79% on time as flown · 1.8% cancel
- Frontier Airlines71%
37 flights · 73% on time as flown · 1.8% cancel
- Alaska Airlines70%
1,756 flights · 71% on time as flown · 1.5% cancel
- American Airlines64%
2,735 flights · 66% on time as flown · 2.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM79%
1,422 flights · avg delay 12 min
- 9 AM to noon77%
697 flights · avg delay 15 min
- Noon to 3 PM69%
731 flights · avg delay 21 min
- 3 to 6 PM69%
1,063 flights · avg delay 24 min
- 6 to 9 PM58%
1,068 flights · avg delay 28 min
- After 9 PM46%
257 flights · avg delay 33 min
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft39%
- Airline (crew, maintenance, boarding)34%
- Air traffic control and airport volume19%
- Severe weather8%
Share of delay minutes by the cause airlines report to the US DOT.
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
DFW to SEA questions
- What time of day is best to fly DFW to SEA?
- Before 9 AM: 79% of flights arrived on time, against 46% for departures after 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from DFW to SEA?
- Delta, with a season-adjusted 77% chance of operating and arriving on time over 710 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on DFW to SEA?
- June (61% on time); the best was February (80%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from DFW
- SEA to DFW (return)
- DFW to ORD 68%
- DFW to LGA 67%
- DFW to ATL 75%
- DFW to LAX 72%
- DFW to DEN 69%
- DFW to IAH 70%
- DFW to LAS 69%
- DFW to PHX 71%
- DFW to MCO 64%
- DFW to MIA 69%
- DFW to AUS 68%
- DFW to SAT 67%
Live status: FAA delays and ground stops