The airport has two operational terminals and one in the planning stage:
Terminal 1
The original terminal, built to complement Charbagh Railway Station's architecture, is now used for international flights after the opening of Terminal 2.
It has two arrival and three departing gates as well as two immigration counters.

Terminal 2
The terminal was inaugurated by civil aviation minister Ajit Singh on 19 May 2012 before opening on 2 June 2012.
With five boarding gates, Terminal 2 is used for domestic flights.
Terminal 2 of Lucknow airport deals with huge passenger traffic every year.
 Air traffic growth has put some pressure on aerodromes as of 2017.
Minister of State for Civil Aviation said, "project management consultant has been awarded for expansion of existing terminal building for an estimated cost of Rs 880 crore".

Terminal 3
On 2 May 2018, Suresh Prabhu, Minister of Civil Aviation (India) announced that a new terminal building will have a capacity to handle 14.4 million passengers annually and will be built at of INR 1383 crores.

In 2018 the construction of the terminal was started by Nagarjuna Construction Company (NCC) and would be completed by 2021.

On 25 February 2019, Adani Group was awarded with the operations and expansion of the existing as well as new terminal.
The airport has two operational terminals and one in the planning stage:
Terminal 1
The original terminal, built to complement Charbagh Railway Station's architecture, is now used for international flights after the opening of Terminal 2. It has two arrival and three departing gates as well as two immigration counters.
Terminal 2
The terminal was inaugurated by civil aviation minister Ajit Singh on 19 May 2012 before opening on 2 June 2012. With five boarding gates, Terminal 2 is used for domestic flights. Terminal 2 of Lucknow airport deals with huge passenger traffic every year.  Air traffic growth has put some pressure on aerodromes as of 2017. Minister of State for Civil Aviation said, "project management consultant has been awarded for expansion of existing terminal building for an estimated cost of Rs 880 crore".
Terminal 3
On 2 May 2018, Suresh Prabhu, Minister of Civil Aviation (India) announced that a new terminal building will have a capacity to handle 14.4 million passengers annually and will be built at of INR 1383 crores.
In 2018 the construction of the terminal was started by Nagarjuna Construction Company (NCC) and would be completed by 2021.
On 25 February 2019, Adani Group was awarded with the operations and expansion of the existing as well as new terminal.
Chaudhary Charan Singh International Airport