Fastest ~3h by car
| 🚗 Car | ~3h | Interstate 65, ~300km, fastest and most flexible |
| 🚌 Bus | ~3h30–4h30 | Greyhound/FlixBus, most frequent, cheapest |
| 🚆 Train | ~4h30 | Amtrak Cardinal, only 3 days/week, plan around schedule |
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Chicago and Indianapolis are only around 300 km apart, but the rail link between them is thin, which puts the bus and the car firmly in contention. Here is how the train, the coaches and the interstate drive actually compare for this Midwest route.
The train: limited, and worth planning around
Amtrak's Cardinal is the only train service linking the two cities directly, and it is a genuinely limited option: it runs just three days a week in each direction, as part of its longer New York–Chicago run via Washington and Cincinnati. The Chicago-to-Indianapolis leg takes around 4 hours 30 minutes, and because the Cardinal only departs a handful of days a week, it is not something you can turn up and use on a whim — check the timetable well before you plan a trip around it.
On the days it runs, it is a comfortable, unhurried way to travel, with coach seating and a café car, but frequency is the real constraint here compared with busier Amtrak corridors like the one described in the USA by train. If your travel dates do not line up with a Cardinal departure, the bus is the fallback, and it is worth noting that seat reservations work differently on long-distance US trains than on many European ones — see seat reservations explained for how that compares.
The cheapest and most frequent: the bus
Greyhound and FlixBus both run multiple daily coaches between Chicago and Indianapolis, with journey times typically 3 hours 30 minutes to 4 hours 30 minutes depending on stops. This is by far the most frequent public transport option on this route — several departures a day, every day, unlike the thrice-weekly train — and fares are generally the lowest of any mode, especially booked a little ahead. Buses run from Chicago's Union Station area and typically arrive near downtown Indianapolis, making onward travel straightforward at both ends.
For most travellers without a car, the bus is simply the practical default on this pair: frequent, direct, and requiring no advance planning around a limited schedule. Travellers arriving into Chicago from overseas and starting their US trip there can find the terminal-to-downtown leg covered in Chicago airport to the city.
Driving: the fastest and most flexible
The drive is about 300 km down Interstate 65, taking roughly 3 hours in normal traffic — genuinely the quickest door-to-door option if you have a car, since it beats both the bus and the train on time while skipping station transfers altogether. The route is straightforward interstate driving through Indiana farmland, with Lafayette roughly at the midpoint if you want to break the journey. General rules for hiring and driving in the country are covered in driving in the USA, including licence requirements for visitors.
A car also makes sense if Indianapolis is a stop on a wider Midwest loop — it connects easily onward to Chicago to St Louis country and Chicago to Detroit, without the limited schedules that come with rail on secondary Midwest lines. If you are picking up a hire car at the airport rather than downtown, renting a car abroad covers the paperwork and insurance basics for overseas visitors.
Flying: rarely worth it
Flights between Chicago and Indianapolis exist but the flight time is under an hour, and once you add airport transfers, security and check-in on both ends, door-to-door time is rarely better than the drive or even a direct bus — for a journey this short, flying only makes sense as part of a longer connecting itinerary rather than as a point-to-point choice.
Practical tips for this route
Whichever mode you choose, a little planning smooths this journey considerably. If you are relying on the Cardinal, cross-check its three-weekly schedule against your travel dates before booking anything else, since missing it can mean a multi-day wait for the next departure. Bus travellers should note that Greyhound and FlixBus schedules can shift with demand, and booking a day or two ahead usually locks in a noticeably lower fare than paying on the day.
Drivers should be aware that I-65 is a genuine interstate with periodic roadworks and occasional weather disruption in winter, when Midwest snow can slow traffic through northern Indiana. None of this makes the drive unreliable, but it is worth building in a little slack rather than cutting connections close, particularly if you are catching an onward flight or event in Indianapolis.
For travellers combining this leg with a broader look at the Midwest, Chicago itself functions as a hub for several of these shorter rail and bus corridors, radiating out toward Milwaukee, St Louis and Detroit as well as Indianapolis, which makes it a sensible base for a multi-city loop.
Which should you choose?
If you have a car, driving down I-65 is the fastest and most flexible option. Without one, the bus is the reliable, frequent choice for most travellers. Take the Cardinal only if your dates happen to match its three-times-a-week schedule and you would enjoy the slower, scenic ride — it is a bonus option here, not the backbone of the route the way Amtrak is on busier corridors such as New York to Washington.
Frequently asked questions
Is there a daily train from Chicago to Indianapolis?
No. The Amtrak Cardinal serves this route only three days a week in each direction, so check the timetable carefully before relying on it.
What is the cheapest way from Chicago to Indianapolis?
Greyhound and FlixBus coaches are usually the lowest fare, run multiple times daily, and take around 3.5–4.5 hours.
How long does the drive take?
About 3 hours for roughly 300 km via Interstate 65, making it the fastest door-to-door option for travellers with a car.
Is flying worth it for this route?
Rarely. The flight itself is under an hour, but airport transfers and check-in usually make the total door-to-door time longer than simply driving or taking a direct bus.