Airport Tips & Quick Reference Guide to Ontario Airport (ONT)

WN1666 Southwest Airlines - Flight Status

Below, you can find details about Southwest Airlines flight WN1666, which currently operates between the airports of Ontario - Ontario International Airport (Airport Code ONT) and Denver - Denver International Airport (Airport Code DEN).
This flight data pertains specifically to the flight's details for Friday, April 17, 2026.

WN1666 On Time performance:
80
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

WN1666 Southwest Airlines to Denver

Scheduled
Flight Status for Friday April 17, 2026

Airline information

Southwest Airlines
Southwest Airlines
Equipment: Boeing 737MAX 8 Passenger

Departure

Ontario (ONT)
April 17, 2026
Ontario International Airport
Scheduled Departure Time:
06:25 am
Terminal:
4
Gate:
402
Scheduled Departure Time: 06:25 am

Arrival

Denver (DEN)
April 17, 2026
Denver International Airport
Scheduled Arrival Time:
09:35 am
Terminal:
-
Gate:
C42
Scheduled Arrival Time: 09:35 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.ontario-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 WN1666?
The flight WN1666 is scheduled to flight on daily basis.

Which is the distance of flight WN1666?
The distance between the two airports is 817 miles.

Which is the flight time of flight WN1666?
The scheduled flight time gate to gate is: 02:10 hours.
The real flight time gate to gate on average is: 02:03 hours.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Ontario: 2026-04-17 02:35:02
Current Time in Denver: 2026-04-17 03:35:02

Alternative Flights

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

UPS
- Flight Number: 5X5806. (On Time performance: 79 - Average Delay: 21 minutes)
- Flight Number: 5X806. (On Time performance: 69 - Average Delay: 14 minutes)

Frontier Airlines
- Flight Number: F91500. (On Time performance: 87 - Average Delay: 10 minutes)

United Airlines
- Flight Number: UA1263. (On Time performance: 86 - Average Delay: 20 minutes)
- Flight Number: UA2446. (On Time performance: 88 - Average Delay: 6 minutes)

Southwest Airlines
- Flight Number: WN113. (On Time performance: 100 - Average Delay: 4 minutes)
- Flight Number: WN3303. (On Time performance: 40 - Average Delay: 23 minutes)
- Flight Number: WN3653.
- Flight Number: WN4129. (On Time performance: 88 - Average Delay: 5 minutes)
- Flight Number: WN4132. (On Time performance: 80 - Average Delay: 16 minutes)
- Flight Number: WN4671. (On Time performance: 50 - Average Delay: 22 minutes)
- Flight Number: WN542. (On Time performance: 77 - Average Delay: 15 minutes)
- Flight Number: WN787. (On Time performance: 48 - Average Delay: 23 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 April 07, 2026 to April 11, 2026, we have obtained these figures.
Total number of flights: 5
On Time: 4 ( 80 % )
Moderate Delay: 1 ( 20 % )
Significant Delay: 0 ( 0 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 3 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 WN1666

Date
Departure
Arrival
Duration
Aircraft
Status
Thursday
16 April
06:51 am
Ontario (ONT)
09:59 am
Denver (DEN)
02h 08min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Wednesday
15 April
10:56 am
Ontario (ONT)
02:10 pm
Denver (DEN)
02h 14min
Boeing 737-700
Boeing 737-700
Landed - Delayed
Tuesday
14 April
10:40 am
Ontario (ONT)
01:45 pm
Denver (DEN)
02h 05min
Boeing 737-700
Boeing 737-700
Landed - On-time
Monday
13 April
06:28 am
Ontario (ONT)
09:23 am
Denver (DEN)
01h 55min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
12 April
06:25 am
Ontario (ONT)
09:29 am
Denver (DEN)
02h 04min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Saturday
11 April
06:22 am
Ontario (ONT)
09:24 am
Denver (DEN)
02h 02min
Boeing 737-700
Boeing 737-700
Landed - On-time
Friday
10 April
06:29 am
Ontario (ONT)
09:29 am
Denver (DEN)
02h 00min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
09 April
06:32 am
Ontario (ONT)
09:30 am
Denver (DEN)
01h 58min
Boeing 737-800
Boeing 737-800
Landed - On-time
Wednesday
08 April
11:08 am
Ontario (ONT)
02:12 pm
Denver (DEN)
02h 04min
Boeing 737-700
Boeing 737-700
Landed - Delayed
Tuesday
07 April
10:39 am
Ontario (ONT)
01:54 pm
Denver (DEN)
02h 15min
Boeing 737-700
Boeing 737-700
Landed - On-time