DL3840 Delta Air Lines - Flight Status
Below, you can find details about Delta Air Lines flight DL3840, which currently operates between the airports of Ontario - Ontario International Airport (Airport Code ONT) and Seattle - Seattle-Tacoma International Airport (Airport Code SEA).
This flight data pertains specifically to the flight's details for Friday, May 08, 2026.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights DL3840
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights DL3840
DL3840 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions. Flight Status
DL3840 Delta Air Lines from Ontario
Scheduled - On-time
Flight Status for Friday May 08, 2026
This flight was also scheduled for Yesterday (May 07, 2026). See it here
This flight is also scheduled for Tomorrow (May 09, 2026). See it here
Scheduled - On-time
Flight Status for Friday May 08, 2026
Airline information
Delta Air Lines
Equipment: Embraer 175
Departure
Ontario (ONT)
May 08, 2026
Ontario International Airport
Estimated Departure Time:
01:35 pm
Terminal:
2
Gate:
208
Scheduled Departure Time: 01:35 pm
Arrival
Seattle (SEA)
May 08, 2026
Seattle-Tacoma International Airport
Estimated Arrival Time:
04:27 pm
Gate:
B5A
Scheduled Arrival Time: 04:35 pm
Baggage: 6
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.
Codeshare Flights
This flight is shared with other airlines, this means that these other flights are the same:
- KL5993 - KLM Royal Dutch Airlines
- VS4052 - Virgin Atlantic
- WS7763 - WestJet
Additional Information
Which is the frequency of flight DL3840?
The flight DL3840 is currently not scheduled at Seattle Airport - SEATAC.
Which is the distance of flight DL3840?
The distance between the two airports is 957 miles.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
The flight DL3840 is currently not scheduled at Seattle Airport - SEATAC.
Which is the distance of flight DL3840?
The distance between the two airports is 957 miles.
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 Ontario and Seattle:
Alaska Airlines
- Flight Number: AS594. (On Time performance: 69 - Average Delay: 18 minutes)
- Flight Number: AS607. (On Time performance: 92 - Average Delay: 7 minutes)
- Flight Number: AS654. (On Time performance: 91 - Average Delay: 9 minutes)
- Flight Number: AS729. (On Time performance: 100 - Average Delay: 0 minutes)
Delta Air Lines
- Flight Number: DL3690. (On Time performance: 100 - Average Delay: 0 minutes)
- Flight Number: DL4031. (On Time performance: 91 - Average Delay: 5 minutes)
- Flight Number: DL4042. (On Time performance: 94 - Average Delay: 7 minutes)
- Flight Number: DL4070. (On Time performance: 89 - Average Delay: 12 minutes)
- Flight Number: DL4170. (On Time performance: 100 - Average Delay: 0 minutes)
Alaska Airlines
- Flight Number: AS594. (On Time performance: 69 - Average Delay: 18 minutes)
- Flight Number: AS607. (On Time performance: 92 - Average Delay: 7 minutes)
- Flight Number: AS654. (On Time performance: 91 - Average Delay: 9 minutes)
- Flight Number: AS729. (On Time performance: 100 - Average Delay: 0 minutes)
Delta Air Lines
- Flight Number: DL3690. (On Time performance: 100 - Average Delay: 0 minutes)
- Flight Number: DL4031. (On Time performance: 91 - Average Delay: 5 minutes)
- Flight Number: DL4042. (On Time performance: 94 - Average Delay: 7 minutes)
- Flight Number: DL4070. (On Time performance: 89 - Average Delay: 12 minutes)
- Flight Number: DL4170. (On Time performance: 100 - Average Delay: 0 minutes)
Punctuality and delays
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from November 02, 2025 to January 04, 2026. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from May 02, 2025 to January 04, 2026. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.
Note: We have excluded some months from the graph, since the quantity and quality of the data is not representative enough.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from November 02, 2025 to January 04, 2026. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.
Last Past Flights DL3840
Date
Departure
Arrival
Duration
Aircraft
Status
Thursday
07 May
07 May
01:26 pm
Ontario (ONT)
Ontario (ONT)
04:09 pm
Seattle (SEA)
Seattle (SEA)
02h 43min
Embraer 175 (E
Embraer 175 (E
Landed - On-time