KLIA Ekspres to KL Sentral is RM55 adult (about RM49.50 if you buy on the app — 10% off), 28 minutes non-stop. At 6pm Friday I'd train to Sentral then Grab or monorail to Bukit Bintang — the airport highway jams hard and a door-to-door Grab can hit RM100–140 with surge. Ekspres + short Grab still beats 90 minutes stuck on the MEX. With two bags, the train is easier than the RM13 airport bus.
Grab runs RM75–115 to Bukit Bintang off-peak from KLIA (dynamic pricing since 2025 — no more fixed RM65). Surge in rain or rush can hit RM140+. Door-to-door takes 50–70 min depending on traffic.
Airport bus to KL Sentral is cheapest (~RM13) but slow and hot. Fine if budget tight, not with two bags at rush hour.
Download Grab before immigration — SIM at airport or use airport WiFi. Cashless is normal in KL.