Informational Guide to Seattle–Tacoma Airport - Seatac (SEA) - NON OFFICIAL

DL1561 Delta Air Lines - Flight Status

Below, you can find details about Delta Air Lines flight DL1561, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and Ontario - Ontario International Airport (Airport Code ONT).
This flight data pertains specifically to the flight's details for Wednesday, August 20, 2025.

DL1561 On Time performance:
78
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays

Flight Status

DL1561 Delta Air Lines to Ontario

Landed - On-time
Flight Status for Wednesday August 20, 2025
This flight is also scheduled for Today (August 21, 2025). See it here
This flight is also scheduled for Tomorrow (August 22, 2025). See it here

Airline information

Delta Air Lines
Delta Air Lines
Equipment: Airbus A220-100 Passenger

Departure

Seattle (SEA)
August 20, 2025
Seattle-Tacoma International Airport
Departed at:
07:52 am
Gate:
B6
Scheduled Departure Time: 08:05 am

Arrival

Ontario (ONT)
August 20, 2025
Ontario International Airport
Arrived at:
10:31 am
Terminal:
2
Gate:
208
Scheduled Arrival Time: 10:50 am
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.seattle-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Additional Information

Which is the frequency of flight DL1561?
The flight DL1561 is scheduled to flight on daily basis.

Which is the distance of flight DL1561?
The distance between the two airports is 957 miles.

Which is the flight time of flight DL1561?
The scheduled flight time gate to gate is: 02:45 hours.
The real flight time gate to gate on average is: 02:35 hours.

Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.

Alternative Flights

The following airlines serves the same route between Seattle and Ontario:

Alaska Airlines
- Flight Number: AS1040. (On Time performance: 52 - Average Delay: 26 minutes)
- Flight Number: AS1086. (On Time performance: 49 - Average Delay: 28 minutes)
- Flight Number: AS1118. (On Time performance: 67 - Average Delay: 14 minutes)
- Flight Number: AS1254. (On Time performance: 79 - Average Delay: 12 minutes)
- Flight Number: AS1278. (On Time performance: 72 - Average Delay: 14 minutes)

Delta Air Lines
- Flight Number: DL3589. (On Time performance: 88 - Average Delay: 6 minutes)
- Flight Number: DL3593. (On Time performance: 97 - Average Delay: 4 minutes)
- Flight Number: DL4027. (On Time performance: 88 - Average Delay: 5 minutes)
- Flight Number: DL4031. (On Time performance: 88 - Average Delay: 5 minutes)

Frontier Airlines
- Flight Number: F93163. (On Time performance: 65 - Average Delay: 31 minutes)

Punctuality and delays

We have gathered data from recent months and present below an analysis of how timely the flights have been.

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from August 11, 2025 to August 19, 2025, we have obtained these figures.
Total number of flights: 9
On Time: 7 ( 78 % )
Moderate Delay: 1 ( 11 % )
Significant Delay: 1 ( 11 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 7 minutes.
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions

Last Past Flights DL1561

Date
Departure
Arrival
Duration
Aircraft
Status
Wednesday
20 August
07:52 am
Seattle (SEA)
10:31 am
Ontario (ONT)
02h 39min
Airbus A220-10
Airbus A220-10
Landed - On-time
Tuesday
19 August
07:54 am
Seattle (SEA)
10:38 am
Ontario (ONT)
02h 44min
Airbus A220-10
Airbus A220-10
Landed - On-time
Monday
18 August
07:59 am
Seattle (SEA)
10:37 am
Ontario (ONT)
02h 38min
Airbus A220-10
Airbus A220-10
Landed - On-time
Sunday
17 August
07:59 am
Seattle (SEA)
10:33 am
Ontario (ONT)
02h 34min
Airbus A220-10
Airbus A220-10
Landed - On-time
Saturday
16 August
07:56 am
Seattle (SEA)
10:25 am
Ontario (ONT)
02h 29min
Airbus A220-10
Airbus A220-10
Landed - On-time
Friday
15 August
07:57 am
Seattle (SEA)
10:22 am
Ontario (ONT)
02h 25min
Airbus A220-10
Airbus A220-10
Landed - On-time
Thursday
14 August
08:33 am
Seattle (SEA)
11:10 am
Ontario (ONT)
02h 37min
Airbus A220-10
Airbus A220-10
Landed - Delayed
Wednesday
13 August
07:59 am
Seattle (SEA)
10:30 am
Ontario (ONT)
02h 31min
Airbus A220-10
Airbus A220-10
Landed - On-time
Tuesday
12 August
08:04 am
Seattle (SEA)
10:44 am
Ontario (ONT)
02h 40min
Airbus A220-10
Airbus A220-10
Landed - On-time
Monday
11 August
08:50 am
Seattle (SEA)
11:34 am
Ontario (ONT)
02h 44min
Airbus A220-10
Airbus A220-10
Landed - Delayed