In terms of precipitation, rainfall in Indianapolis ranges from 2.3 - 5.1 inches per month. May is typically the wettest month, when rainfall can reach 5.1 in. February is typically the driest time to visit Indianapolis when rainfall is around 2.3 in.

If weather is an important factor for your trip to Indianapolis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

How far in advance should I book a flight from Trenton, New Jersey to Indianapolis?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 56 days in advance, which can save you up to 71% on flights from Trenton, New Jersey to Indianapolis compared to booking the week you need them. Waiting 56 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $258. For sooner than that we have options available in the next 3 days from $343.

What is the cheapest month to fly from Trenton, New Jersey to Indianapolis?

The best pricing can be found in the month of February. Prices to Indianapolis from Trenton, New Jersey average $262. You can even find prices in February for less than $262, as users have found deals to Indianapolis from as low as $59. The month of May appears to be one of the more expensive times to travel to Indianapolis from Trenton, New Jersey. Flying in the targeted month can save you up to 18%.

What is the cheapest time of day to fly from TTN to IND?

A simple way to save on the total cost of your ticket is to fly from Trenton, New Jersey to Indianapolis at noon. If you’re flexible enough to do this you can expect to save up to 66% on your trip compared to booking a flight in the morning.

Can I find deals for flights from Trenton to Indianapolis that include hotel bookings?

Yes. In addition to deals on Trenton to Indianapolis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Trenton to Indianapolis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trenton to Indianapolis.

Can I find deals for business class flights from Trenton to Indianapolis?

Yes. Cheapflights offers flight deals from Trenton to Indianapolis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$109+ Flights from Trenton, NJ to Indianapolis

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Cheap flight deals from Trenton to Indianapolis

Round-trip from	$217 (Mytrip)
One-way from	$109 (Frontier)
Popular in	May
Cheapest in	February
Average price	$264

From Trenton-Mercer to Indianapolis

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One-way flight from Trenton-Mercer to Indianapolis

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Highest demand for flights based on searches. 4% potential increase in price ($13 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Trenton to Indianapolis

Cheapest flights from Trenton to Indianapolis
Explore the most affordable flight options available from Trenton to Indianapolis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Thu 8/75:15 pmTTN - IND

1 stop25h 03mFrontier

Sat 8/96:27 pmIND - TTN

1 stop16h 39mFrontier

Deal found 7/28

$215

Best flights from Trenton to Indianapolis
Discover carefully curated flight deals from Trenton to Indianapolis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Sun 8/175:15 pmTTN - IND

1 stop25h 06mFrontier

Sat 8/2312:58 pmIND - TTN

1 stop10h 58mFrontier

Deal found 7/29

$217

Last-minute flights from Trenton to Indianapolis
Discover last-minute flight deals from Trenton to Indianapolis. Data last updated July 31, 2025 and is based on user searches.

Thu 8/75:15 pmTTN - IND

1 stop25h 03mFrontier

Sat 8/96:27 pmIND - TTN

1 stop16h 39mFrontier

Deal found 7/28

$215

One-way flights from Trenton to Indianapolis
Search for one-way flight options from Trenton to Indianapolis. Find affordable one-way fares based on user searches. Data last updated July 31, 2025.

Sun 8/246:00 amTTN - IND

1 stop6h 13mFrontier

Deal found 7/30

$109

Cheapflights Fare Finder

Use the filters below to find and compare flights from Trenton to Indianapolis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TrentonIndianapolis

TTN - IND

TTNIND

Trenton-Mercer

Sun 8/17

5:15 pm-6:21 pm

1 stop25h 06m

Indianapolis

Sat 8/23

12:58 pm-11:56 pm

1 stop10h 58m

$217

TrentonIndianapolis

TTN - IND

TTNIND

Trenton-Mercer

Sun 8/24

6:00 am-12:13 pm

1 stop6h 13m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Trenton to Indianapolis

Have a flexible travel schedule? Discover the best time to fly to Indianapolis from Trenton with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Trenton to Indianapolis

What is the cheapest month to book a flight from Trenton, New Jersey to Indianapolis?

Currently, August is the cheapest month in which you can book a flight from Trenton, New Jersey to Indianapolis (average of $297). Flying from Trenton, New Jersey to Indianapolis in March is currently the most expensive (average of $361). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Indianapolis

Read reviews from past customers who have flown Frontier from Trenton to Indianapolis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Frontier

5.9

Fair

3,239 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

TTN is a small airport for Frontier. Drop off is easy as is parking. The location is remote so there is zero traffic. The place could use a renovation but for the price you pay it is not necessary. Good-Staff is very friendly. Flight left on time. Bad- run down, deplaning/boarding on the tarmac. I got wet on the stairs outside of the plane while waiting to board.

Frontier

5.9

Fair

3,239 reviews

Frontier

5.9

Fair

3,239 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

Related info for your journey

Can I find deals for flights from Trenton to Indianapolis that include hotel bookings?
Yes. In addition to deals on Trenton to Indianapolis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Trenton to Indianapolis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trenton to Indianapolis.
Can I find deals for business class flights from Trenton to Indianapolis?
Yes. Cheapflights offers flight deals from Trenton to Indianapolis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Trenton, New Jersey to Indianapolis?
Currently, August is the cheapest month in which you can book a flight from Trenton, New Jersey to Indianapolis (average of $297). Flying from Trenton, New Jersey to Indianapolis in March is currently the most expensive (average of $361). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$109+ Cheap flights from Trenton, NJ to Indianapolis (TTN - IND)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Trenton to Indianapolis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Trenton to Indianapolis

Round-trip from

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Find flight deals from Trenton to Indianapolis

Cheapest flights from Trenton to IndianapolisExplore the most affordable flight options available from Trenton to Indianapolis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Explore the most affordable flight options available from Trenton to Indianapolis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Trenton to Indianapolis that are best for you.

Best time to book a flight from Trenton to Indianapolis

Have a flexible travel schedule? Discover the best time to fly to Indianapolis from Trenton with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Trenton to Indianapolis

What is the cheapest month to book a flight from Trenton, New Jersey to Indianapolis?

Reviews of airlines servicing Indianapolis

Read reviews from past customers who have flown Frontier from Trenton to Indianapolis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Trenton to Indianapolis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Trenton to Indianapolis that include hotel bookings?

How can I find direct flights from Trenton to Indianapolis?

Can I find deals for business class flights from Trenton to Indianapolis?

What is the cheapest month to book a flight from Trenton, New Jersey to Indianapolis?

Traveling to a place near Indianapolis?

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Alternative routes for Trenton to Indianapolis

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Cheapest flights from Trenton to Indianapolis
Explore the most affordable flight options available from Trenton to Indianapolis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.