- ^ begins 12 February 2018
- ^ begins 2 March 2018
- ^ a b c d e f g h i suspended until further notice due to the Qatari diplomatic crisis
- ^ begins 30 January 2018
- ^ begins 5 July 2018
- ^ begins 27 March 2018
- ^ ends 28 February 2018
- ^ ends 24 January 2018
- ^ seasonal
- ^ begins 6 February 2018
- ^ begins 28 January 2018
- ^ suspended until further notice
- ^ resumes 8 June 2018
- ^ begins 1 May 2018
- ^ begins 8 June 2018
- ^ ends 25 March 2018
- ^ begins 12 February 2018
- ^ begins 2 March 2018
- ^ a b c d e f g h i suspended until further notice due to the Qatari diplomatic crisis
- ^ begins 30 January 2018
- ^ begins 5 July 2018
- ^ begins 27 March 2018
- ^ ends 28 February 2018
- ^ ends 24 January 2018
- ^ seasonal
- ^ begins 6 February 2018
- ^ begins 28 January 2018
- ^ suspended until further notice
- ^ resumes 8 June 2018
- ^ begins 1 May 2018
- ^ begins 8 June 2018
- ^ ends 25 March 2018