What is the cheapest airline that flies from Illinois to Trenton-Mercer?

Frontier is the most popular carrier operating from Illinois to Trenton-Mercer

What airlines fly to Trenton, New Jersey?

American Airlines, United Airlines and Spirit Airlines are the top three most popular airlines that fly to Trenton, New Jersey from Illinois according to our data. American Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Trenton, New Jersey. Keep in mind that there are 7 different airlines that fly to Trenton, New Jersey on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Trenton, New Jersey?

If you’re flying from a popular airport in Illinois, such as Chicago or Peoria, and flying into Trenton, New Jersey, then you can expect flight times to average 3h 12m and 4h 44m, respectively.

When did momondo last update prices for flights from Illinois to Trenton-Mercer Airport?

Prices for flights from Illinois to Trenton-Mercer Airport are updated daily.

How many operators does momondo search for flights from Illinois to Trenton-Mercer Airport?

There is 1 operator available for flights from Illinois to Trenton-Mercer Airport as of August 2025.

How old do you have to be to fly from Illinois to Trenton-Mercer Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Trenton-Mercer Airport.

What documentation or ID do you need to fly to Trenton-Mercer Airport?

The required travel and health documents for your Trenton-Mercer Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trenton-Mercer Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$98 Cheap Flights from Illinois to Trenton in 2025

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Find the cheapest flights from Illinois to New York

Round-trip

One-way

Last minute

Cheap round-trip flights

8:49 pm - 11:00 amORD-TTN

13h 11m1 stop

11:45 am - 7:44 pmTTN-ORD

8h 59m1 stop

$217Frontier

Find Deal

Fri, Sep 5 - Mon, Sep 8

8:49 pm - 11:00 amORD-TTN

13h 11m1 stop

11:45 am - 7:44 pmTTN-ORD

8h 59m1 stop

$222Frontier

Find Deal

Thu, Sep 4 - Mon, Sep 8

6:00 pm - 10:08 amORD-TTN

15h 08m1 stop

5:03 pm - 6:41 pmTTN-ORD

26h 38m1 stop

$232Frontier

Find Deal

Thu, Aug 21 - Fri, Aug 22

8:00 am - 11:00 amORD-TTN

26h 00m1 stop

12:30 pm - 11:58 pmTTN-ORD

12h 28m1 stop

$236Frontier

Find Deal

Sat, Oct 4 - Mon, Oct 6

11:45 am - 9:32 amORD-TTN

20h 47m1 stop

11:45 am - 7:44 pmTTN-ORD

8h 59m1 stop

$237Frontier

Find Deal

Wed, Sep 10 - Mon, Sep 15

11:45 am - 9:32 amORD-TTN

20h 47m1 stop

11:45 am - 7:44 pmTTN-ORD

8h 59m1 stop

$239Frontier

Find Deal

Wed, Sep 10 - Mon, Sep 15

8:49 pm - 11:00 amORD-TTN

13h 11m1 stop

4:57 pm - 7:44 pmTTN-ORD

27h 47m1 stop

$242Frontier

Find Deal

Fri, Sep 19 - Sun, Sep 21

5:10 am - 11:34 amORD-TTN

5h 24m1 stop

8:00 am - 6:33 pmTTN-ORD

11h 33m1 stop

$244Frontier

Find Deal

Mon, Oct 6 - Sat, Oct 11

8:10 am - 11:59 pmORD-TTN

14h 49m1 stop

10:11 am - 9:58 pmTTN-ORD

12h 47m2 stops

$356

Find Deal

Mon, Oct 27 - Fri, Oct 31

7:43 pm - 10:14 amORD-TTN

13h 31m1 stop

10:11 am - 9:58 pmTTN-ORD

12h 47m2 stops

$367

Find Deal

Sat, Oct 25 - Fri, Oct 31

Frontier flights from Illinois to Trenton, New Jersey

Our best Frontier deals on Illinois to Trenton, New Jersey flight tickets

Frontier

Sep 5

ORD8:49 pmChicago O'Hare Intl

13h 11m

1 stop

TTN11:00 amTrenton-Mercer

Sep 8

TTN11:45 amTrenton-Mercer

8h 59m

1 stop

ORD7:44 pmChicago O'Hare Intl

$217

Find similar

Frontier

Sep 4

ORD8:49 pmChicago O'Hare Intl

13h 11m

1 stop

TTN11:00 amTrenton-Mercer

Sep 8

TTN11:45 amTrenton-Mercer

8h 59m

1 stop

ORD7:44 pmChicago O'Hare Intl

$222

Find similar

Frontier

Aug 16

ORD9:08 amChicago O'Hare Intl

13h 51m

1 stop

TTN11:59 pmTrenton-Mercer

Aug 18

TTN12:48 pmTrenton-Mercer

12h 34m

1 stop

ORD12:22 amChicago O'Hare Intl

$225

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Trenton, New Jersey that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 9/5

8:49 pm-11:00 am

1 stop13h 11m

Trenton-Mercer

Mon 9/8

11:45 am-7:44 pm

1 stop8h 59m

$217

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Thu 9/4

8:49 pm-11:00 am

1 stop13h 11m

Trenton-Mercer

Mon 9/8

11:45 am-7:44 pm

1 stop8h 59m

$222

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Thu 8/21

6:00 pm-10:08 am

1 stop15h 08m

Trenton-Mercer

Fri 8/22

5:03 pm-6:41 pm

1 stop26h 38m

$232

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sat 10/4

8:00 am-11:00 am

1 stop26h 00m

Trenton-Mercer

Mon 10/6

12:30 pm-11:58 pm

1 stop12h 28m

$236

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Wed 9/10

11:45 am-9:32 am

1 stop20h 47m

Trenton-Mercer

Mon 9/15

11:45 am-7:44 pm

1 stop8h 59m

$237

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Wed 9/10

11:45 am-9:32 am

1 stop20h 47m

Trenton-Mercer

Mon 9/15

11:45 am-7:44 pm

1 stop8h 59m

$239

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 9/19

8:49 pm-11:00 am

1 stop13h 11m

Trenton-Mercer

Sun 9/21

4:57 pm-7:44 pm

1 stop27h 47m

$242

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Mon 10/6

5:10 am-11:34 am

1 stop5h 24m

Trenton-Mercer

Sat 10/11

8:00 am-6:33 pm

1 stop11h 33m

$244

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Mon 10/27

8:10 am-11:59 pm

1 stop14h 49m

Trenton-Mercer

Fri 10/31

10:11 am-9:58 pm

2 stops12h 47m

$356

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sat 10/25

7:43 pm-10:14 am

1 stop13h 31m

Trenton-Mercer

Fri 10/31

10:11 am-9:58 pm

2 stops12h 47m

$367

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Trenton, New Jersey

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Trenton, New Jersey?

The cheapest day to depart on your flight to Trenton, New Jersey is on a Saturday when prices can be found for as low as $102. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Trenton, New Jersey is Friday, with ticket prices averaging around $180.

What is the cheapest time of day to depart on your flight to Trenton, New Jersey?

The cheapest time of day to fly to Trenton, New Jersey is at noon when flights can be purchased for as low as $65. Flights to Trenton, New Jersey are more costly in the evening, with an average ticket price of $269. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Illinois to Trenton, New Jersey flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Trenton, New Jersey

Best Price Found	$98
Fastest flight time	5h 21m
Direct flights	None
Airports in Trenton, New Jersey	1 airport

The best one-way flight to Trenton, New Jersey from Illinois in the past 72 hours is $98. The best round-trip flight deal from Illinois to Trenton, New Jersey found on momondo in the last 72 hours is $217.

The fastest flight from Illinois to Trenton, New Jersey takes 5h 21m

There are no direct flights from Illinois to Trenton, New Jersey. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Trenton-Mercer Airport and Lambert-St Louis Airport - Trenton-Mercer Airport.

There is 1 airport near Trenton, New Jersey: Trenton-Mercer (TTN)

Search flight deals

When did momondo last update prices for flights from Illinois to Trenton-Mercer Airport?
Prices for flights from Illinois to Trenton-Mercer Airport are updated daily.
How many operators does momondo search for flights from Illinois to Trenton-Mercer Airport?
There is 1 operator available for flights from Illinois to Trenton-Mercer Airport as of August 2025.
How old do you have to be to fly from Illinois to Trenton-Mercer Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Trenton-Mercer Airport.
What documentation or ID do you need to fly to Trenton-Mercer Airport?
The required travel and health documents for your Trenton-Mercer Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trenton-Mercer Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Trenton, New Jersey

Compare and see reviews for airlines that fly from Illinois to Trenton, New Jersey with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $55	Free Cancellation	Rating 5.8 3,221 reviews		Search Frontier flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Trenton?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Trenton. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Illinois to Trenton with flexible booking policies on momondo?

momondo does allow users to show only those flights to Trenton from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to Trenton?

momondo helps you find the best flight between Illinois and Trenton by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Illinois to Trenton right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to Trenton flights. All you need is a valid email address and we will do the rest; it is that quick and easy.