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

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

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 04m and 4h 35m, respectively.

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 41% 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.

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 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.

$77 Cheap Flights from Illinois to Trenton in 2025/26

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Find the cheapest flights from Illinois to New York

Round-trip

One-way

Last minute

Cheap round-trip flights

6:05 pm - 11:59 pmSTL-TTN

28h 54m1 stop

6:00 am - 12:46 pmTTN-STL

7h 46m1 stop

$156Frontier

Find Deal

Fri, Oct 10 - Sun, Oct 12

8:44 am - 11:59 pmORD-TTN

14h 15m1 stop

4:25 pm - 7:10 amTTN-ORD

15h 45m1 stop

$159Frontier

Find Deal

Fri, Oct 24 - Sun, Oct 26

9:24 am - 11:59 pmORD-TTN

13h 35m1 stop

4:25 pm - 7:10 amTTN-ORD

15h 45m1 stop

$160Frontier

Find Deal

Thu, Oct 23 - Sun, Oct 26

7:43 pm - 10:14 amORD-TTN

13h 31m1 stop

6:00 am - 5:13 pmTTN-ORD

12h 13m1 stop

$161Frontier

Find Deal

Sat, Oct 25 - Mon, Oct 27

7:05 am - 10:13 amORD-TTN

26h 08m1 stop

4:27 pm - 12:16 pmTTN-ORD

20h 49m1 stop

$162Frontier

Find Deal

Thu, Nov 6 - Sun, Nov 9

8:30 am - 11:59 pmORD-TTN

14h 29m1 stop

6:00 am - 5:13 pmTTN-ORD

12h 13m1 stop

$176Frontier

Find Deal

Sat, Oct 18 - Mon, Oct 20

6:07 pm - 11:59 pmORD-TTN

28h 52m1 stop

4:25 pm - 5:13 pmTTN-ORD

25h 48m1 stop

$177Frontier

Find Deal

Thu, Oct 16 - Sun, Oct 19

5:10 am - 11:34 amORD-TTN

5h 24m1 stop

9:00 am - 7:34 amTTN-ORD

23h 34m1 stop

$178Frontier

Find Deal

Mon, Oct 6 - Thu, Oct 9

5:05 am - 11:59 pmORD-TTN

17h 54m2 stops

6:00 am - 6:46 pmTTN-ORD

13h 46m1 stop

$382Multiple Airlines

Find Deal

Thu, Oct 9 - Mon, Oct 13

11:43 am - 10:13 amORD-TTN

21h 30m2 stops

9:29 pm - 6:23 pmTTN-ORD

21h 54m3 stops

$417Multiple Airlines

Find Deal

Sun, Nov 9 - Sun, Nov 16

Frontier flights from Illinois to Trenton, New Jersey

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

Frontier

Oct 3

STL9:32 pmLambert-St Louis

12h 28m

1 stop

TTN11:00 amTrenton-Mercer

Oct 5

TTN10:30 amTrenton-Mercer

5h 34m

1 stop

STL3:04 pmLambert-St Louis

$154

Find similar

Frontier

Oct 10

STL6:05 pmLambert-St Louis

28h 54m

1 stop

TTN11:59 pmTrenton-Mercer

Oct 12

TTN6:00 amTrenton-Mercer

7h 46m

1 stop

STL12:46 pmLambert-St Louis

$156

Find similar

Frontier

Oct 24

ORD8:44 amChicago O'Hare Intl

14h 15m

1 stop

TTN11:59 pmTrenton-Mercer

Oct 26

TTN4:25 pmTrenton-Mercer

15h 45m

1 stop

ORD7:10 amChicago O'Hare Intl

$159

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

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Fri 10/10

6:05 pm-11:59 pm

1 stop28h 54m

Trenton-Mercer

Sun 10/12

6:00 am-12:46 pm

1 stop7h 46m

$156

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 10/24

8:44 am-11:59 pm

1 stop14h 15m

Trenton-Mercer

Sun 10/26

4:25 pm-7:10 am

1 stop15h 45m

$159

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Thu 10/23

9:24 am-11:59 pm

1 stop13h 35m

Trenton-Mercer

Sun 10/26

4:25 pm-7:10 am

1 stop15h 45m

$160

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sat 10/25

7:43 pm-10:14 am

1 stop13h 31m

Trenton-Mercer

Mon 10/27

6:00 am-5:13 pm

1 stop12h 13m

$161

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Thu 11/6

7:05 am-10:13 am

1 stop26h 08m

Trenton-Mercer

Sun 11/9

4:27 pm-12:16 pm

1 stop20h 49m

$162

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sat 10/18

8:30 am-11:59 pm

1 stop14h 29m

Trenton-Mercer

Mon 10/20

6:00 am-5:13 pm

1 stop12h 13m

$176

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Thu 10/16

6:07 pm-11:59 pm

1 stop28h 52m

Trenton-Mercer

Sun 10/19

4:25 pm-5:13 pm

1 stop25h 48m

$177

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Mon 10/6

5:10 am-11:34 am

1 stop5h 24m

Trenton-Mercer

Thu 10/9

9:00 am-7:34 am

1 stop23h 34m

$178

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Thu 10/9

5:05 am-11:59 pm

2 stops17h 54m

Trenton-Mercer

Mon 10/13

6:00 am-6:46 pm

1 stop13h 46m

$382

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sun 11/9

11:43 am-10:13 am

2 stops21h 30m

Trenton-Mercer

Sun 11/16

9:29 pm-6:23 pm

3 stops21h 54m

$417

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

Direct flights	None

There are no direct flights from Illinois to Trenton, New Jersey. There are no popular flight routes from Illinois to Trenton, New Jersey.

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 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.

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.