$64 Find Cheap Flights from Trenton to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Trenton to Illinois departing on 2/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Trenton to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Trenton to Illinois, as well as popular online travel agencies
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Cheap Flights from Trenton to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$129
St. Louis
St. Louis1 stop$140
Chicago
Chicago1 stop$129
St. Louis
St. Louis1 stop$140

Book Cheap Trenton to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Trenton to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Trenton to Illinois

Wed, Jan 21 - Mon, Jan 26
Frontier Logo
3:21 pm - 10:41 am
TTN
-
ORD
20h 20m1 stop
Frontier Logo
11:51 am - 2:26 pm
ORD
-
TTN
25h 35m1 stop
$129Frontier
Fri, Feb 6 - Mon, Feb 9
Frontier Logo
7:36 pm - 11:33 pm
TTN
-
STL
28h 57m1 stop
Frontier Logo
5:42 pm - 10:02 pm
STL
-
TTN
27h 20m1 stop
$140Frontier
Thu, Feb 26 - Thu, Mar 5
Frontier Logo
6:45 am - 7:37 pm
TTN
-
ORD
13h 52m1 stop
Frontier Logo
12:15 pm - 11:59 pm
ORD
-
TTN
10h 44m1 stop
$145Frontier
Thu, Feb 5 - Sat, Feb 7
Frontier Logo
8:38 pm - 10:35 am
TTN
-
ORD
14h 57m1 stop
Frontier Logo
9:15 am - 11:26 am
ORD
-
TTN
25h 11m1 stop
$146Frontier
Tue, Jan 20 - Sat, Jan 24
Frontier Logo
3:21 pm - 11:33 pm
TTN
-
STL
9h 12m1 stop
Frontier Logo
5:42 pm - 8:36 am
STL
-
TTN
13h 54m1 stop
$152Frontier
Thu, Mar 5 - Mon, Mar 9
Frontier Logo
9:59 pm - 7:13 am
TTN
-
STL
10h 14m1 stop
Frontier Logo
9:07 am - 4:18 pm
STL
-
TTN
6h 11m1 stop
$162Frontier
Thu, Apr 9 - Mon, Apr 13
Frontier Logo
5:13 pm - 11:03 pm
TTN
-
ORD
6h 50m1 stop
Frontier Logo
10:12 am - 11:59 pm
ORD
-
TTN
12h 47m1 stop
$162Frontier
Thu, Jan 29 - Sat, Jan 31
Frontier Logo
12:04 pm - 10:35 am
TTN
-
ORD
23h 31m1 stop
Frontier Logo
9:15 am - 11:26 am
ORD
-
TTN
25h 11m1 stop
$163Frontier
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
2:32 pm - 10:33 pm
TTN
-
STL
9h 01m1 stop
Frontier Logo
5:06 pm - 11:59 pm
STL
-
TTN
5h 53m1 stop
$164Frontier
Mon, Jan 12 - Fri, Jan 16
Multiple Airlines Logo
6:00 am - 12:08 pm
TTN
-
ORD
31h 08m2 stops
Multiple Airlines Logo
12:44 pm - 11:39 pm
ORD
-
TTN
9h 55m1 stop
$185Multiple Airlines
Booking Insights

KAYAK's insights & trends for Trenton to Illinois flights

Get data-powered insights and trends into flights from Trenton to Illinois to help you find the cheapest flights, the best time to fly and much more.

How long does a flight from Trenton to Illinois take?

The duration of a flight to Illinois depends on your arrival airport. The shortest route to Illinois from Trenton is to Chicago, which takes 11h 33m.

Find deals

Good to know

Cheapest flight$64
Flight from Trenton to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Trenton to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Trenton to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Trenton to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Trenton to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Trenton to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Trenton to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Trenton to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Trenton to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $154 on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $188.

Everything you need to know for your flight from Trenton to Illinois

Information on your arrival and departure airports

Trenton (TTN)