Travelers have found it’s best to book a flight 44 days in advance to save up to 26% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 44 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Illinois to Houston 1-2 weeks in advance for as low as $118, or $157 for flights within the next 24 hours.
Our data shows that February tends to be the cheapest month to fly to Houston from Illinois. Users have commonly found prices around $134 for the month, but tickets can be as low as $68. Due to multiple factors, prepare for potentially higher prices in December.
||$56||$154||No cancel fee||65%|
||$87||$348||No cancel fee||N/A|
||$48||$351||No cancel fee||69%|
||$52||$387||No cancel fee||71%|