$111 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 8/18. 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$244
St. Louis
St. Louis1 stop$210
Chicago
Chicago1 stop$244
St. Louis
St. Louis1 stop$210

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, Aug 26 - Wed, Sep 2
Frontier Logo
8:33 pm - 12:14 am
TTN
-
STL
28h 41m
1 stop
Frontier Logo
4:10 pm - 7:48 pm
STL
-
TTN
26h 38m
1 stop
$210Frontier
Wed, Jul 29 - Wed, Aug 5
Frontier Logo
6:25 am - 11:59 pm
TTN
-
STL
18h 34m
1 stop
Frontier Logo
4:09 pm - 10:28 am
STL
-
TTN
17h 19m
1 stop
$220Frontier
Tue, Jul 14 - Tue, Jul 21
Frontier Logo
6:05 am - 11:59 pm
TTN
-
STL
18h 54m
1 stop
Frontier Logo
4:09 pm - 11:40 pm
STL
-
TTN
6h 31m
1 stop
$230Frontier
Tue, Aug 18 - Thu, Aug 20
Frontier Logo
8:33 pm - 12:14 am
TTN
-
STL
28h 41m
1 stop
Frontier Logo
4:10 pm - 9:47 am
STL
-
TTN
16h 37m
1 stop
$234Frontier
Thu, Jul 30 - Wed, Aug 5
Frontier Logo
6:05 am - 11:59 pm
TTN
-
STL
18h 54m
1 stop
Frontier Logo
4:09 pm - 10:28 am
STL
-
TTN
17h 19m
1 stop
$240Frontier
Mon, Aug 3 - Wed, Aug 5
Frontier Logo
6:05 am - 11:59 pm
TTN
-
STL
18h 54m
1 stop
Frontier Logo
4:09 pm - 11:40 pm
STL
-
TTN
6h 31m
1 stop
$241Frontier
Sat, Jul 25 - Wed, Jul 29
Frontier Logo
6:05 am - 11:59 pm
TTN
-
STL
18h 54m
1 stop
Frontier Logo
4:09 pm - 8:38 am
STL
-
TTN
15h 29m
1 stop
$244Frontier
Wed, Sep 2 - Sat, Sep 5
Frontier Logo
12:49 pm - 11:08 pm
TTN
-
ORD
11h 19m
1 stop
Frontier Logo
7:44 pm - 12:04 pm
ORD
-
TTN
15h 20m
1 stop
$244Frontier
Thu, Sep 3 - Sun, Sep 6
Multiple Airlines Logo
8:33 pm - 8:02 am
TTN
-
RFD
12h 29m
1 stop
Multiple Airlines Logo
10:41 am - 11:21 am
RFD
-
TTN
23h 40m
1 stop
$306Multiple Airlines
Wed, Jul 15 - Fri, Jul 24
Multiple Airlines Logo
12:28 pm - 10:37 am
TTN
-
RFD
23h 09m
2 stops
Multiple Airlines Logo
8:39 am - 11:38 am
RFD
-
TTN
25h 59m
1 stop
$343Multiple 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 15h 15m.

Find deals

Good to know

Cheapest flight$111
Flight from Trenton to St. Louis

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.

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

Information on your arrival and departure airports

Trenton (TTN)