Bus services are very good and thanks to yesmytrip .
Azamgarh to Lucknow
Lucknow to Delhi
Gorakhpur to Allahabad
Lucknow to anand vihar
Allahabad to Gorakhpur
Anand Vihar to Azamgarh
Gorakhpur to anand vihar
Delhi to Lucknow
Gorakhpur to Delhi
Delhi to Gorakhpur