Five terminals and an underground Skyway train mean IAH rewards travellers who plan their connections rather than wing it, especially through those dense United banking hours. January fares dip to $120, which suits anyone happy to trade Christmas lights for cheaper seats. Affirm, Afterpay and Klarna all work at checkout, so splitting the cost of that NASA detour is straightforward. Just budget for a rental car once you land; this is not a city that rewards showing up on foot.
