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

Prices for flights from Trenton-Mercer Airport to Illinois were last updated today.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Trenton-Mercer Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$93 Cheap Flights from Trenton, New Jersey to Illinois in 2026

Find the cheapest flights from Trenton, New Jersey to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:49 pm - 11:08 pm

TTN

ORD

11h 19m

1 stop

5:59 pm - 12:04 pm

ORD

TTN

17h 05m

1 stop

$178Frontier

Tue, Aug 25 - Wed, Aug 26

6:30 am - 11:08 pm

TTN

ORD

17h 38m

1 stop

7:44 pm - 11:40 pm

ORD

TTN

26h 56m

1 stop

$189Frontier

Sat, Aug 29 - Wed, Sep 2

12:49 pm - 11:08 pm

TTN

ORD

11h 19m

1 stop

7:44 pm - 12:04 pm

ORD

TTN

15h 20m

1 stop

$191Frontier

Wed, Sep 2 - Sat, Sep 5

7:39 pm - 10:59 pm

TTN

ORD

28h 20m

1 stop

3:50 pm - 6:42 pm

ORD

TTN

25h 52m

1 stop

$198Frontier

Mon, Sep 14 - Sat, Sep 19

11:25 am - 7:39 pm

TTN

STL

9h 14m

1 stop

8:34 pm - 10:39 am

STL

TTN

13h 05m

1 stop

$198Frontier

Mon, Oct 12 - Thu, Oct 15

12:49 pm - 11:08 pm

TTN

ORD

11h 19m

1 stop

11:15 am - 6:42 pm

ORD

TTN

6h 27m

1 stop

$208Frontier

Wed, Sep 2 - Thu, Sep 17

12:49 pm - 11:08 pm

TTN

ORD

11h 19m

1 stop

5:29 pm - 6:42 pm

ORD

TTN

24h 13m

1 stop

$209Frontier

Sat, Sep 5 - Tue, Sep 8

12:49 pm - 11:08 pm

TTN

ORD

11h 19m

1 stop

7:44 pm - 11:40 pm

ORD

TTN

26h 56m

1 stop

$213Frontier

Tue, Aug 25 - Thu, Aug 27

12:49 pm - 11:08 pm

TTN

ORD

11h 19m

1 stop

7:44 pm - 12:04 pm

ORD

TTN

15h 20m

1 stop

$218Frontier

Wed, Sep 2 - Sat, Sep 5

6:30 am - 1:20 pm

TTN

ORD

7h 50m

1 stop

9:10 pm - 12:04 pm

ORD

TTN

13h 54m

1 stop

$222Frontier

Fri, Sep 4 - Mon, Sep 7

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Frontier flights from Trenton, New Jersey to Illinois

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

Frontier

Aug 25

TTN12:49 pmTrenton-Mercer

11h 19m

1 stop

ORD11:08 pmChicago O'Hare Intl

Aug 26

ORD5:59 pmChicago O'Hare Intl

17h 05m

1 stop

TTN12:04 pmTrenton-Mercer

$178

Frontier

Aug 29

TTN6:30 amTrenton-Mercer

17h 38m

1 stop

ORD11:08 pmChicago O'Hare Intl

Sep 2

ORD7:44 pmChicago O'Hare Intl

26h 56m

1 stop

TTN11:40 pmTrenton-Mercer

$189

Frontier

Sep 2

TTN12:49 pmTrenton-Mercer

11h 19m

1 stop

ORD11:08 pmChicago O'Hare Intl

Sep 5

ORD7:44 pmChicago O'Hare Intl

15h 20m

1 stop

TTN12:04 pmTrenton-Mercer

$191

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Tue 8/25

12:49 pm-11:08 pm

1 stop11h 19m

Chicago O'Hare Intl

Wed 8/26

5:59 pm-12:04 pm

1 stop17h 05m

$178

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Sat 8/29

6:30 am-11:08 pm

1 stop17h 38m

Chicago O'Hare Intl

Wed 9/2

7:44 pm-11:40 pm

1 stop26h 56m

$189

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Wed 9/2

12:49 pm-11:08 pm

1 stop11h 19m

Chicago O'Hare Intl

Sat 9/5

7:44 pm-12:04 pm

1 stop15h 20m

$191

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Mon 9/14

7:39 pm-10:59 pm

1 stop28h 20m

Chicago O'Hare Intl

Sat 9/19

3:50 pm-6:42 pm

1 stop25h 52m

$198

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Mon 10/12

11:25 am-7:39 pm

1 stop9h 14m

Lambert-St Louis

Thu 10/15

8:34 pm-10:39 am

1 stop13h 05m

$198

Quickest round-trip

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Wed 9/2

12:49 pm-11:08 pm

1 stop11h 19m

Chicago O'Hare Intl

Thu 9/17

11:15 am-6:42 pm

1 stop6h 27m

$208

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Sat 9/5

12:49 pm-11:08 pm

1 stop11h 19m

Chicago O'Hare Intl

Tue 9/8

5:29 pm-6:42 pm

1 stop24h 13m

$209

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Tue 8/25

12:49 pm-11:08 pm

1 stop11h 19m

Chicago O'Hare Intl

Thu 8/27

7:44 pm-11:40 pm

1 stop26h 56m

$213

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Wed 9/2

12:49 pm-11:08 pm

1 stop11h 19m

Chicago O'Hare Intl

Sat 9/5

7:44 pm-12:04 pm

1 stop15h 20m

$218

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Fri 9/4

6:30 am-1:20 pm

1 stop7h 50m

Chicago O'Hare Intl

Mon 9/7

9:10 pm-12:04 pm

1 stop13h 54m

$222

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 Trenton, New Jersey to Illinois

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

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

Frontier and Allegiant Air are the most popular carriers operating from Trenton-Mercer to Illinois

What airlines fly to Illinois?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Illinois from Trenton, New Jersey according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

Cheap Trenton, New Jersey to Illinois flight deals and tips

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

Fastest flight time	7h 50m
Direct flights	None

The fastest flight from Trenton, New Jersey to Illinois takes 7h 50m

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

Search flight deals

Frequently asked questions about flying from Trenton, New Jersey to Illinois

When did momondo last update prices for flights from Trenton-Mercer Airport to Illinois?
Prices for flights from Trenton-Mercer Airport to Illinois were last updated today.
How old do you have to be to fly from Trenton-Mercer Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Trenton-Mercer Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Trenton to Illinois. momondo saves you time and could save you money on your trip.

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

Flights from Trenton to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Trenton.

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

Price alerts on flights to Illinois from Trenton are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.