Route on-time record

SEA to DFW: most on-time flights and the best time to fly

Seattle (Seattle–Tacoma International Airport) to Dallas-Fort Worth (Dallas Fort Worth International Airport). 5,237 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 2.1% were cancelled. The most reliable flight number was American 2748 at 6:00 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

SEA → DFW

Seattle to Dallas-Fort Worth: 5,237 nonstop flights a year

On time (12 months)

77%

Cancelled

2.1%

avg delay 18 min

Best time to leave

Before 9 AM

89% on time vs 71% noon to 3 PM

Most reliable airline

Alaska

76% chance on time

Check SEA to DFW fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

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 · American 2748
6:00 AM → 12:05 PM4h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
On time (history)
93%
Cancelled
3.3%
Avg arrival delay
8 min
- Arrived on time 93% of the time (347 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (12 of 365).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 71%).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
Strong track record · 347 flights
Find American 2748 fares Opens this date on Aviasales
#2 · Alaska 577
6:00 AM → 12:03 PM4h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
On time (history)
89%
Cancelled
0.0%
Avg arrival delay
8 min
- Arrived on time 89% of the time (19 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 71%).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find Alaska 577 fares Opens this date on Aviasales
#3 · American 1667
7:09 AM → 1:13 PM4h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
On time (history)
89%
Cancelled
2.1%
Avg arrival delay
15 min
- Arrived on time 89% of the time (329 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 71%).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Lands inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 329 flights
Find American 1667 fares Opens this date on Aviasales
#4 · Alaska 440
8:32 AM → 2:40 PM4h 08m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 414; its record covers all of them.
85%
chance on time
On time (history)
87%
Cancelled
1.7%
Avg arrival delay
6 min
- Arrived on time 87% of the time (343 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 71%).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Lands inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 343 flights
Find Alaska 440 fares Opens this date on Aviasales
#5 · Alaska 135
10:51 PM → 4:40 AM3h 49m nonstop
Local times, typical schedule. Last flown 2026-03-16.
85%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 94% of the time (32 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Short track record (32 flights), so its score leans on the airline's record at this hour.
Limited track record · 32 flights
Find Alaska 135 fares Opens this date on Aviasales
#6 · Alaska 586
11:54 AM → 6:15 PM4h 21m nonstop
Local times, typical schedule. Last flown 2026-05-12.
80%
chance on time
On time (history)
90%
Cancelled
2.3%
Avg arrival delay
5 min
- Arrived on time 90% of the time (83 flights, Jun 2025 to May 2026).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Lands inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 83 flights
Find Alaska 586 fares Opens this date on Aviasales
#7 · American 2695
12:59 AM → 6:56 AM3h 57m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 1209; its record covers all of them.
79%
chance on time
On time (history)
85%
Cancelled
0.6%
Avg arrival delay
12 min
- Arrived on time 85% of the time (168 flights, Jun 2025 to May 2026).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
Moderate track record · 168 flights
Find American 2695 fares Opens this date on Aviasales
#8 · American 707
10:25 AM → 4:32 PM4h 07m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
On time (history)
80%
Cancelled
2.7%
Avg arrival delay
18 min
- Arrived on time 80% of the time (316 flights, Jun 2025 to May 2026).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Lands inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 316 flights
Find American 707 fares Opens this date on Aviasales
#9 · Delta 803
9:35 AM → 3:36 PM4h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
On time (history)
83%
Cancelled
1.7%
Avg arrival delay
16 min
- Arrived on time 83% of the time (170 flights, Jun 2025 to May 2026).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Lands inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 170 flights
Find Delta 803 fares Opens this date on Aviasales
#10 · Alaska 424
5:58 PM → 11:59 PM4h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
On time (history)
77%
Cancelled
0.9%
Avg arrival delay
11 min
- Arrived on time 77% of the time (320 flights, Jun 2025 to May 2026).
- Departs inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Strong track record · 320 flights
Find Alaska 424 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Alaska Airlines76%
1,755 flights · 77% on time as flown · 1.1% cancel
American Airlines75%
2,735 flights · 77% on time as flown · 3.0% cancel
Delta Air Lines73%
710 flights · 75% on time as flown · 1.8% cancel
Frontier Airlines68%
37 flights · 49% on time as flown · 1.7% cancel

On time by departure time

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

Before 9 AM89%
1,262 flights · avg delay 9 min
9 AM to noon73%
1,373 flights · avg delay 21 min
Noon to 3 PM71%
624 flights · avg delay 20 min
3 to 6 PM71%
1,070 flights · avg delay 23 min
After 9 PM75%
782 flights · avg delay 19 min

Best day: Wednesday (80%). Worst: Sunday (73%).

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

Airline (crew, maintenance, boarding)46%
Late-arriving aircraft35%
Air traffic control and airport volume17%
Severe weather2%

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

SEA to DFW questions

What time of day is best to fly SEA to DFW?: Before 9 AM: 89% of flights arrived on time, against 71% for departures noon to 3 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 SEA to DFW?: Alaska, with a season-adjusted 76% chance of operating and arriving on time over 1,755 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 SEA to DFW?: June (65% on time); the best was February (85%), 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 SEA

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