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Cheap flights from Illinois to New York from $54

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to New York departing on 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
3:30 pm - 11:59 pmSTL-TTN
7h 29m1 stop
Frontier Logo
6:10 am - 10:33 pmTTN-STL
17h 23m1 stop
$111Frontier
Find Deal
Sat, Dec 13 - Mon, Dec 15
Frontier Logo
3:30 pm - 11:59 pmSTL-TTN
7h 29m1 stop
Frontier Logo
9:08 pm - 8:59 amTTN-STL
12h 51m1 stop
$124Frontier
Find Deal
Sat, Dec 6 - Sun, Dec 7
Frontier Logo
3:30 pm - 11:59 pmSTL-TTN
7h 29m1 stop
Frontier Logo
6:10 am - 10:33 pmTTN-STL
17h 23m1 stop
$129Frontier
Find Deal
Mon, Dec 8 - Mon, Dec 15
Frontier Logo
3:30 pm - 11:59 pmSTL-TTN
7h 29m1 stop
Frontier Logo
9:08 pm - 10:33 pmTTN-STL
26h 25m1 stop
$138Frontier
Find Deal
Fri, Dec 12 - Sun, Dec 14
Frontier Logo
10:24 am - 8:41 pmSTL-TTN
9h 17m1 stop
Frontier Logo
12:44 pm - 11:57 pmTTN-STL
12h 13m1 stop
$144Frontier
Find Deal
Sun, Nov 23 - Mon, Nov 24
Frontier Logo
4:13 pm - 8:41 pmSTL-TTN
27h 28m1 stop
Frontier Logo
8:08 pm - 9:29 amTTN-STL
14h 21m1 stop
$145Frontier
Find Deal
Sat, Nov 22 - Tue, Nov 25
Frontier Logo
3:30 pm - 11:59 pmSTL-TTN
7h 29m1 stop
Frontier Logo
6:10 am - 10:33 pmTTN-STL
17h 23m1 stop
$181Frontier
Find Deal
Thu, Dec 11 - Mon, Dec 15
Frontier Logo
2:26 pm - 11:59 pmORD-TTN
8h 33m1 stop
Frontier Logo
6:10 am - 1:16 pmTTN-ORD
8h 06m1 stop
$198Frontier
Find Deal
Sat, Dec 6 - Mon, Dec 8
Multiple Airlines Logo
12:44 pm - 11:59 pmORD-TTN
10h 15m1 stop
Multiple Airlines Logo
7:00 am - 8:54 pmTTN-ORD
14h 54m2 stops
$281Multiple Airlines
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Fri, Feb 6 - Sun, Feb 8
Multiple Airlines Logo
12:44 pm - 11:59 pmORD-TTN
10h 15m1 stop
Multiple Airlines Logo
9:59 pm - 5:52 pmTTN-ORD
20h 53m1 stop
$284Multiple Airlines
Find Deal
Fri, Feb 6 - Sun, Feb 8

Frontier flights from Illinois to Trenton, New Jersey

Our best Frontier deals on Illinois to Trenton, New Jersey flight tickets
Frontier
Dec 13
STL3:30 pmLambert-St Louis
7h 29m
1 stop
TTN11:59 pmTrenton-Mercer
Dec 15
TTN6:10 amTrenton-Mercer
17h 23m
1 stop
STL10:33 pmLambert-St Louis
$111
Find similar
Frontier
Dec 6
STL3:30 pmLambert-St Louis
7h 29m
1 stop
TTN11:59 pmTrenton-Mercer
Dec 7
TTN9:08 pmTrenton-Mercer
12h 51m
1 stop
STL8:59 amLambert-St Louis
$124
Find similar
Frontier
Dec 8
STL3:30 pmLambert-St Louis
7h 29m
1 stop
TTN11:59 pmTrenton-Mercer
Dec 15
TTN6:10 amTrenton-Mercer
17h 23m
1 stop
STL10:33 pmLambert-St Louis
$129
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Trenton, New Jersey that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 10, 2025.
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

Sat 12/13

3:30 pm-11:59 pm

1 stop7h 29m

Trenton-Mercer

Mon 12/15

6:10 am-10:33 pm

1 stop17h 23m

$111

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Sat 12/6

3:30 pm-11:59 pm

1 stop7h 29m

Trenton-Mercer

Sun 12/7

9:08 pm-8:59 am

1 stop12h 51m

$124

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Mon 12/8

3:30 pm-11:59 pm

1 stop7h 29m

Trenton-Mercer

Mon 12/15

6:10 am-10:33 pm

1 stop17h 23m

$129

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Fri 12/12

3:30 pm-11:59 pm

1 stop7h 29m

Trenton-Mercer

Sun 12/14

9:08 pm-10:33 pm

1 stop26h 25m

$138

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Sun 11/23

10:24 am-8:41 pm

1 stop9h 17m

Trenton-Mercer

Mon 11/24

12:44 pm-11:57 pm

1 stop12h 13m

$144

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Sat 11/22

4:13 pm-8:41 pm

1 stop27h 28m

Trenton-Mercer

Tue 11/25

8:08 pm-9:29 am

1 stop14h 21m

$145

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Thu 12/11

3:30 pm-11:59 pm

1 stop7h 29m

Trenton-Mercer

Mon 12/15

6:10 am-10:33 pm

1 stop17h 23m

$181

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sat 12/6

2:26 pm-11:59 pm

1 stop8h 33m

Trenton-Mercer

Mon 12/8

6:10 am-1:16 pm

1 stop8h 06m

$198

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 2/6

12:44 pm-11:59 pm

1 stop10h 15m

Trenton-Mercer

Sun 2/8

7:00 am-8:54 pm

2 stops14h 54m

$281

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 2/6

12:44 pm-11:59 pm

1 stop10h 15m

Trenton-Mercer

Sun 2/8

9:59 pm-5:52 pm

1 stop20h 53m

$284

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

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.
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  • 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.

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