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Trenton

$80+ Cheap flights from Chicago (CHI) to Trenton, NJ (TTN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — TTN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Chicago to Trenton

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Trenton (TTN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$144
(Booking.com)

One-way from

$80
(Cheapflightsfares)

Popular in

December

Cheapest in

January

Average price

$187
From Chicago (CHI) to Trenton-Mercer
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One-way flight from Chicago (CHI) to Trenton-Mercer
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Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Chicago to Trenton

Cheapest flights from Chicago to Trenton
Explore the most affordable flight options available from Chicago to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/35:10 amORD - TTN
1 stop5h 24mFrontier
Mon 10/612:30 pmTTN - ORD
1 stop12h 09mFrontier
Deal found 9/15$144
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/35:10 amORD - TTN
1 stop5h 24mFrontier
Sun 10/54:57 pmTTN - ORD
1 stop27h 47mFrontier
Deal found 9/15$152
This Flightnetwork deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:49 pmORD - TTN
1 stop13h 11mFrontier
Thu 10/94:25 pmTTN - ORD
1 stop16h 09mFrontier
Deal found 9/15$159
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/225:10 amORD - TTN
1 stop5h 24mFrontier
Fri 9/2611:45 amTTN - ORD
1 stop8h 59mFrontier
Deal found 9/15$160
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/187:43 pmORD - TTN
1 stop13h 31mFrontier
Thu 10/234:25 pmTTN - ORD
1 stop16h 09mFrontier
Deal found 9/16$161
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/268:49 pmORD - TTN
1 stop13h 11mFrontier
Sun 9/284:57 pmTTN - ORD
1 stop27h 47mFrontier
Deal found 9/16$162
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:45 amORD - TTN
1 stop20h 47mFrontier
Sun 10/510:30 amTTN - ORD
1 stop25h 01mFrontier
Deal found 9/16$164
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/288:49 pmORD - TTN
1 stop13h 11mFrontier
Fri 10/312:30 pmTTN - ORD
1 stop12h 09mFrontier
Deal found 9/16$169
This Gotogate deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/248:44 amORD - TTN
1 stop14h 15mFrontier
Sun 10/266:00 amTTN - ORD
1 stop26h 10mFrontier
Deal found 9/15$176
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/117:43 pmORD - TTN
1 stop13h 31mFrontier
Sat 10/188:00 amTTN - ORD
1 stop11h 33mFrontier
Deal found 9/16$177
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:05 amORD - TTN
1 stop26h 08mFrontier
Sun 11/96:00 amTTN - ORD
1 stop7h 26mFrontier
Deal found 9/16$178

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Trenton 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, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Chicago to Trenton that are best for you.

Fly from

Chicago

Fly to

Trenton

Route

Depart

Return

Price

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 10/3

5:10 am-11:34 am

1 stop5h 24m

Trenton-Mercer

Mon 10/6

12:30 pm-11:39 pm

1 stop12h 09m

$144

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 10/3

5:10 am-11:34 am

1 stop5h 24m

Trenton-Mercer

Sun 10/5

4:57 pm-7:44 pm

1 stop27h 47m

$152

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Mon 10/6

5:10 am-11:34 am

1 stop5h 24m

Trenton-Mercer

Thu 10/16

6:00 am-7:34 am

1 stop26h 34m

$152

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Thu 10/2

8:49 pm-11:00 am

1 stop13h 11m

Trenton-Mercer

Sun 10/5

4:57 pm-7:44 pm

1 stop27h 47m

$159

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sun 10/5

8:49 pm-11:00 am

1 stop13h 11m

Trenton-Mercer

Thu 10/9

4:25 pm-7:34 am

1 stop16h 09m

$159

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sat 10/25

7:43 pm-10:14 am

1 stop13h 31m

Trenton-Mercer

Sun 10/26

4:25 pm-7:10 am

1 stop15h 45m

$159

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Thu 9/25

8:49 pm-11:00 am

1 stop13h 11m

Trenton-Mercer

Mon 9/29

11:45 am-7:44 pm

1 stop8h 59m

$160

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 9/26

8:49 pm-11:00 am

1 stop13h 11m

Trenton-Mercer

Mon 9/29

11:45 am-7:44 pm

1 stop8h 59m

$160

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sun 10/5

8:49 pm-11:00 am

1 stop13h 11m

Trenton-Mercer

Thu 10/16

6:00 am-4:57 pm

1 stop11h 57m

$160

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 10/3

5:10 am-11:34 am

1 stop5h 24m

$80

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 17 results
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Best time to book a flight from Chicago to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Trenton

What is the cheapest month to book a flight from Chicago to Trenton, New Jersey?

Currently, January is the cheapest month in which you can book a flight from Chicago to Trenton, New Jersey (average of $73). Flying from Chicago to Trenton, New Jersey in June is currently the most expensive (average of $153). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to TTN?

Find hourly flight availability from Chicago to Trenton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

It’s typically best to fly out from Chicago to Trenton, New Jersey at noon. Doing so could potentially save you 76% on the flight price compared to flying in the evening, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Trenton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Trenton from Chicago?

    For a flight from Chicago to Trenton, you will be flying into Trenton-Mercer. Trenton-Mercer (TTN) is just 4.8 mi from the center of the city. Trenton-Mercer is the only Trenton airport and it handles 0 inbound flights from Chicago per day. 1 airline has flights to Trenton-Mercer from Chicago on a regular basis.

  • How long is the flight from Chicago to Trenton, New Jersey?

    Frontier can get you from Chicago to Trenton, New Jersey in just under 5h 24m. Your travel time can differ by up to . The distance from Chicago to Trenton, New Jersey is about 690 mi.

  • Can I find deals for flights from Chicago to Trenton that include hotel bookings?

    Yes. In addition to deals on Chicago to Trenton flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Trenton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Trenton.

  • Can I find deals for business class flights from Chicago to Trenton?

    Yes. Cheapflights offers flight deals from Chicago to Trenton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Trenton, New Jersey?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Trenton, New Jersey (average of $73). Flying from Chicago to Trenton, New Jersey in June is currently the most expensive (average of $153). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Chicago to Trenton

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Chicago to Trenton

Discover the top airline that operate flights from Chicago to Trenton. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$76Average$208FlexibilityNo cancel feeOn-time62%

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