$86 Cheap Flights from Trenton (TTN) to Indianapolis (IND)

View $86 flight on Sat, Nov 8, 2025Opens in a new window

Popular airlines from Trenton–Mercer Airport (TTN) to Indianapolis Intl. Airport (IND)

Cheap Flights from Trenton to Indianapolis (TTN-IND)

Prices were available within the past 7 days and start at $86 for one-way flights and $160 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Nov 13 - Sat, Nov 15
TTN
Trenton
IND
Indianapolis
$160 Roundtrip, found 15 hours ago
$160
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Trenton to Indianapolis, returning Sat, Nov 15, priced at $160 found 15 hours ago
Frontier Airlines
Thu, Nov 13 - Sat, Nov 15
TTN
Trenton
IND
Indianapolis
$166 Roundtrip, found 5 days ago
$166
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Trenton to Indianapolis, returning Sat, Nov 15, priced at $166 found 5 days ago
Frontier Airlines
Fri, Nov 14 - Sat, Nov 15
TTN
Trenton
IND
Indianapolis
$173 Roundtrip, found 15 hours ago
$173
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Fri, Nov 14 from Trenton to Indianapolis, returning Sat, Nov 15, priced at $173 found 15 hours ago
Frontier Airlines
Sun, Dec 14 - Mon, Dec 15
TTN
Trenton
IND
Indianapolis
$178 Roundtrip, found 4 days ago
$178
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sun, Dec 14 from Trenton to Indianapolis, returning Mon, Dec 15, priced at $178 found 4 days ago
Frontier Airlines
Thu, Nov 13 - Sat, Nov 15
TTN
Trenton
IND
Indianapolis
$185 Roundtrip, found 6 days ago
$185
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Trenton to Indianapolis, returning Sat, Nov 15, priced at $185 found 6 days ago
Frontier Airlines
Fri, Nov 14 - Sat, Nov 15
TTN
Trenton
IND
Indianapolis
$193 Roundtrip, found 4 days ago
$193
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Fri, Nov 14 from Trenton to Indianapolis, returning Sat, Nov 15, priced at $193 found 4 days ago
Frontier Airlines
Sat, Nov 8 - Sun, Nov 9
TTN
Trenton
IND
Indianapolis
$199 Roundtrip, found 1 day ago
$199
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Nov 8 from Trenton to Indianapolis, returning Sun, Nov 9, priced at $199 found 1 day ago
Frontier Airlines
Mon, Nov 10 - Sat, Nov 15
TTN
Trenton
IND
Indianapolis
$200 Roundtrip, found 4 days ago
$200
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Nov 10 from Trenton to Indianapolis, returning Sat, Nov 15, priced at $200 found 4 days ago
Frontier Airlines
Mon, Nov 10 - Fri, Nov 14
TTN
Trenton
IND
Indianapolis
$212 Roundtrip, found 1 day ago
$212
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Nov 10 from Trenton to Indianapolis, returning Fri, Nov 14, priced at $212 found 1 day ago
American Airlines
Sat, Nov 15 - Wed, Nov 19
TTN
Trenton
IND
Indianapolis
$342 Roundtrip, found 8 hours ago
$342
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sat, Nov 15 from Trenton to Indianapolis, returning Wed, Nov 19, priced at $342 found 8 hours ago

Alternative airports near Indianapolis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Indianapolis Intl. IND. Cheapest and Closest option available. Average driving time to city center is 19 minutes. Flights from $342
IND
Indianapolis Intl.
CheapestClosest
Average driving time to city center19 min
Flights from $342
Flights from Trenton (TTN) to Indianapolis (IND)
Origin airport
Mercer
Destination airport
Indianapolis Intl.
Airlines serving
American Airlines, Frontier Airlines
Roundtrip price
$160
Distance
608 mi

Trenton to Indianapolis Flights

The cheapest times to fly from Trenton to Indianapolis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Trenton to Indianapolis are during the month of November. You can find some of the cheapest flights from Trenton to Indianapolis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Trenton to Indianapolis

Sunday is one of the best days to book for cheap flights from Trenton to Indianapolis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Trenton to Indianapolis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Trenton to Indianapolis in 2025. You can also book with separate airlines for your outbound and return journeys, from $86 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Trenton to Indianapolis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Trenton to Indianapolis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND) cost?
Grab a cheap one-way flight from $86 or cheap return flight from $160 from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND)?
November is the least expensive month to fly from TTN to IND. Traveling during an off-peak travel window is often the key to finding better fares.
Which airlines fly direct from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND)?
Although Trenton, NJ (TTN-Mercer) has no direct flights to Indianapolis Intl. Airport (IND), other airports have nonstop routes. Departing from Liberty Intl. Airport (EWR) will get you to Indianapolis without any layovers.
What is the cheapest airline that flies from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from TTN to IND. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND)?
There are no daily nonstop flights departing from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from TTN to IND?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND)?
To touch down at Indianapolis Intl. Airport (IND) without delays, book a flight that takes off from Mercer Airport (TTN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND) last-minute?
Holding off until just before your trip to book your flight from TTN to IND often results in higher prices. While you might find some last-minute deals, there's no guarantee. Keep your travel plans flexible for a better chance of scoring a bargain.
Is it cheaper to book a TTN to IND flight and hotel package?
Securing a TTN to IND flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our wide range of hotels and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Indianapolis Intl. Airport (IND)?
Usually, it's possible to cancel or reschedule your TTN to IND flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.