How long is the flight time from Lucknow to Chennai?

What is the approximate flight time between the places Lucknow, the Capital city of the state of Uttar Pradesh and a second largest city after Kanpur in Uttar Pradesh and Chennai,formerly known as Madras or Madarasapatinam (மதராசப்பட்டினம்,మద్రాసు పట్టణం), the capital city of the Indian state of Tamil Nadu, located on the Coromandel Coast of the Bay of Bengal?

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Show reasoning Reasoning

I followed this chain of reasoning:

I know from locally stored knowledge that:
26°51'38"N is the latitude of Lucknow ([fact: ["361657403@trueknowledge.com"]])

13°05'23"N is the latitude of Chennai ([fact: ["359879887@trueknowledge.com"]])

80°55'12"E is the longitude of Lucknow ([fact: ["637103628@trueknowledge.com"]])

80°16'026.4"E is the longitude of Chennai ([fact: ["647889780@trueknowledge.com"]])

By calculation (generator: ["distance_between3@trueknowledge.com"]) I know that:
1,531.86843082 kilometres is the distance between Lucknow and Chennai

By calculation (generator: ["flight_time_between_two_places@trueknowledge.com"]) I know that:
2 hours is the flight time between Lucknow and Chennai

I used the following facts to provide this answer:

26°51'38"N is the latitude of Lucknow

agree disagree edit

13°05'23"N is the latitude of Chennai

agree disagree edit

80°55'12"E is the longitude of Lucknow

agree disagree edit

80°16'026.4"E is the longitude of Chennai

agree disagree edit