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Find cheap flights from Trenton to Illinois from $49

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 6/12. 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
0 bags
Mon 7/1
Mon 7/8

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Best Illinois Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicago1 stop$113
St. Louis
St. Louis1 stop$180

Good to know

Low season

November

High season

September

Cheapest flight

$49
Best time to beat the crowds with an average 58% drop in price.
Most popular time to fly and prices are also 26% lower on average.
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 to Illinois from Trenton 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 to Illinois with an airline and back to Trenton 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 to Illinois from Trenton up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Morning departure is around 13% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top airlines flying from Trenton to Illinois

 
Need help choosing which airline to fly with from Trenton to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.4
Spirit AirlinesOverall score based on 8607 reviews
5.1Entertainment
6.7Boarding
7.1Crew
5.9Comfort
5.3Food
Airline reviews

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

10.0 ExcellentKhyla, May 2024DFW - ORD
Read more about Spirit Airlines reviews

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

The seat are terrible. Don’t even think of sleeping on a Spirit flight. The kids that run the plane aka flight attendants are pretty rude and straight forward. They get the job done but without class.

I had a death in my family and booked my flight on Spirit. My flight was cancelled the morning of my flight, no explanation, no help to rebook, nobody to talk to. The next available flight was 2days later !!!! Terrible airline, will NEVER fly with them again!

They took a horrible route with a lot of turbulence and I eneded up getting sick. Even if the flight takes longer. Don't put people life at risk just to get to the airport on time.

Every thing was fine ,low price,easy on time ,clean, good staff, really no issues

Had to board plan 2x due to lack of security check after 1st boarding

Miserable. The crew was rude, the flight was delayed 5 hours for mechanical reasons and then “weather” even though other planes were leaving.

They kept Changing the flight times. It was delayed several times and at one point it was supposed to depart at 3.40am! At which point we ended up staying overnight and booked long a separate United flight for early morning departure. The spirit flight then got moved up and left at 1.30 in the morning when it was supposed to leave at 9.40pm the night before.

Flight was delayed...not horribly late. Just before push back engine shut down for a quick replacement item that took about five minutes. After that, everything was smooth and the pilot was able to make up time in the air so that our arrival time was not too far off the original anticipated arrival time.

The flight was delayed almost two hours on the front end, and an hour on the backend once we landed and waited for a gate to open up. We were told to remain in our seats during that whole delay and I had to go to the bathroom badly. I was unable to hold it and was forced to urinate in my pants while in my seat. I then had to sit in it until we finally deboarded and I was able to change my clothes.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

Book cheap flights from Trenton to Illinois

Recent round-trip flight deals

8/21Wed
1 stopFrontier
8h 28mTTN-ORD
8/27Tue
1 stopFrontier
11h 22mORD-TTN
$113
6/12Wed
1 stopFrontier
6h 48mTTN-ORD
6/13Thu
1 stopFrontier
12h 13mORD-TTN
$115
6/12Wed
1 stopFrontier
6h 48mTTN-ORD
6/13Thu
1 stopFrontier
12h 13mORD-TTN
$116
6/12Wed
1 stopFrontier
6h 48mTTN-ORD
6/26Wed
1 stopFrontier
12h 44mORD-TTN
$134
6/12Wed
1 stopFrontier
6h 48mTTN-ORD
6/26Wed
1 stopFrontier
12h 44mORD-TTN
$136
9/11Wed
1 stopFrontier
8h 28mTTN-ORD
9/15Sun
1 stopFrontier
25h 14mORD-TTN
$149
8/21Wed
1 stopFrontier
8h 28mTTN-ORD
8/28Wed
1 stopFrontier
12h 40mORD-TTN
$154
6/26Wed
1 stopFrontier
7h 03mTTN-ORD
7/2Tue
1 stopFrontier
25h 15mORD-TTN
$159
7/4Thu
1 stopFrontier
28h 35mTTN-ORD
7/9Tue
1 stopFrontier
24h 51mORD-TTN
$162
8/31Sat
1 stopFrontier
13h 07mTTN-STL
9/2Mon
1 stopFrontier
9h 16mSTL-TTN
$180

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Recent one-way flight deals

6/12Wed
1 stopFrontier
6h 48mTTN-ORD
$49
6/10Mon
1 stopFrontier
7h 13mTTN-ORD
$57
9/4Wed
1 stopFrontier
8h 28mTTN-ORD
$58
6/11Tue
1 stopFrontier
29h 15mTTN-ORD
$60
6/10Mon
1 stopFrontier
7h 13mTTN-ORD
$61
6/12Wed
1 stopFrontier
6h 48mTTN-ORD
$62
9/3Tue
1 stopFrontier
28h 59mTTN-ORD
$68
7/1Mon
1 stopFrontier
7h 28mTTN-ORD
$79
6/26Wed
1 stopFrontier
7h 03mTTN-ORD
$80
7/4Thu
1 stopFrontier
28h 35mTTN-ORD
$90

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Last minute flights from Trenton to Illinois

Last minute flight, train and bus deals

6/5Wed
multi-stopFrontier
6h 48mTTN-ORD
6/11Tue
multi-stopFrontier
25h 43mORD-TTN
$148
6/5Wed
multi-stopFrontier
6h 48mTTN-ORD
6/12Wed
multi-stopFrontier
12h 44mORD-TTN
$152
6/5Wed
multi-stopFrontier
6h 48mTTN-ORD
6/13Thu
multi-stopFrontier
12h 13mORD-TTN
$160
6/5Wed
multi-stopFrontier
6h 48mTTN-ORD
6/13Thu
multi-stopFrontier
25h 13mORD-TTN
$190
6/5Wed
multi-stopFrontier
6h 48mTTN-ORD
6/11Tue
multi-stopFrontier
25h 43mORD-TTN
$194
6/6Thu
multi-stopFrontier
23h 39mTTN-STL
6/7Fri
multi-stopFrontier
22h 57mSTL-TTN
$197
6/5Wed
multi-stopFrontier
6h 48mTTN-ORD
6/6Thu
multi-stopFrontier
25h 13mORD-TTN
$207
6/5Wed
multi-stopFrontier
6h 48mTTN-ORD
6/12Wed
multi-stopFrontier
12h 44mORD-TTN
$214
6/5Wed
multi-stopFrontier
6h 48mTTN-ORD
6/8Sat
multi-stopFrontier
16h 32mORD-TTN
$221
6/5Wed
multi-stopFrontier
6h 48mTTN-ORD
6/12Wed
multi-stopFrontier
12h 44mORD-TTN
$228

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Trenton - Illinois Flights

Departure:

Trenton (TTN)United States

Return flight deals:

Illinois - Trenton

Cabin classes: