Currently wifi is not available on Amtrak Southwest Cheif.
Elsewhere on the Amtrak website you can find this list which shows the most upto date list of the trains that have available Wifi.
https://www.amtrak.com/onboard/journey-with-wi-fi-train-station.html?content=
Having used the Wifi system on several routes it is worth noting that service can be slow/sporadic
Credit:stackoverflow.com‘
4 Mar, 2024
5 Mar, 2024
5 Mar, 2024
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