DL420 Delta Air Lines - Flight Status

Which is the frequency of flight DL420?
The flight DL420 is currently not scheduled at San Francisco Airport (SFO).

Which is the distance of flight DL420?
The distance between the two airports is 249 miles.

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

The following airline serve the same route between San Francisco and Arcata:
United Airlines - Flight Number: UA2022.

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 April 07, 2026 to September 09, 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.

Note: We have excluded some days from the graph, since the quantity and quality of the data is not representative enough.

Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from November 11, 2025 to September 09, 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.