I am writing this review after several incidents with Go indigo, and not ONE time during all of those incidents was I able to book a ticket with them. Let me tell you why.
My family member, a senior citizen, is a frequent business traveller and travels to many "non-popular" airports often, as he often has work assigned in cities that you cannot call metros like Mumbai/Delhi/Bangalore etc. More often than not, the airlines to such airports go half empty on weekdays. I am tasked with booking his airline tickets regularly. Now my issue with indigo is(and this problem may be unique to low congestion/non-metro airports) that unlike other airlines, Indigo always shows a "clickbait" fare price. And if you are thinking the problem may be arising due to using third party booking site, no, because I am using the official airline website. So once you get a low fare and begin the booking it will take you all the way to the payment page and then reject your booking citing "Error we cannot book ticket in this flight right now". What they really mean is "haha got you, we never had that ticket in first place, now go buy same ticket and pay double the price". If you are not using private/incognito window, then god help you because if you so much so run the query for same day same destination twice, they will jack the ticket price up by 40-60% in very second attempt. But using tracker free browsing window doesn’t help either, because once they know someone has made it all the way to the payment window, they will raise the fare by 40-60% if only for 24 hours. Point being, they won’t let you book for the price which they used to clickbait you to their website, ever. I would be prudent in giving this review if it happened once or twice, but this happens every single time and only with Indigo. I never ran into such problems with Air India who also operates on same routes as Indigo. So all things considered, I think I will actively avoid booking anything from Indigo because you waste 20-30 minutes looking for flights, selecting seats and addons, entering all passenger details etc and then when it’s time for confirmation, they deny selling you the advertised ticket and jack up its price even if there’s plenty of space left in aircraft. Being a budget airline doesn’t mean you have to clickbait people with fares that don’t exist, eventually such tactics catch up to them and buyer just goes to a different airline to prevent the experience. Doing so for locations that already don’t get many airline travellers, and it just makes you wonder why do they even bother.
The only time I did travel with Indigo(and only because my ticket was bought by office or I would never dare) the experience was absolutely underwhelming with mediocre food from a very limited menu, rude staff and over all a perfect "cheap flight" experience you could hope for. Jet airways or Air India(often has similar prices) recommended over Indigo any given day for domestic travel.