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$64+ Cheap flights from Trenton, NJ (TTN) to Chicago (CHI)

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — CHI
Jan 21 — Jan 281
Wed 1/21
Wed 1/28
1 adult, Economy
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Cheap flight deals from Trenton to Chicago

Cheapest flights from Trenton to Chicago
Explore the most affordable flight options available from Trenton to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2025.

This Frontier deal was found by Cheapflights users on 12/20. 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.
Tue 12/309:59 pmTTN - ORD
1 stop13h 19mFrontier
Thu 1/88:00 amORD - TTN
1 stop10h 13mFrontier
Deal found 12/20$257
This Booking.com deal was found by Cheapflights users on 12/22. 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.
Mon 12/299:21 pmTTN - ORD
1 stop12h 41mFrontier
Mon 1/59:47 amORD - TTN
1 stop13h 12mFrontier
Deal found 12/22$322
This Frontier deal was found by Cheapflights users on 12/22. 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 12/299:21 pmTTN - ORD
1 stop12h 41mFrontier
Fri 1/210:12 amORD - TTN
1 stop12h 47mFrontier
Deal found 12/22$357
This Frontier deal was found by Cheapflights users on 12/21. 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.
Tue 12/309:59 pmTTN - ORD
1 stop13h 19mFrontier
Thu 1/111:28 amORD - TTN
1 stop11h 31mFrontier
Deal found 12/21$362
This Mytrip deal was found by Cheapflights users on 12/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:10 amTTN - ORD
1 stop29h 08mFrontier
Sun 1/48:09 pmORD - TTN
1 stop26h 50mFrontier
Deal found 12/21$382
This Frontier deal was found by Cheapflights users on 12/20. 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.
Sat 12/205:13 pmTTN - ORD
1 stop8h 18mFrontier
Wed 12/3111:23 amORD - TTN
1 stop8h 51mFrontier
Deal found 12/20$422
This Booking.com deal was found by Cheapflights users on 12/21. 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 12/316:10 amTTN - ORD
1 stop29h 08mFrontier
Fri 1/210:12 amORD - TTN
1 stop12h 47mFrontier
Deal found 12/21$438
This Frontier deal was found by Cheapflights users on 12/22. 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.
Tue 12/309:59 pmTTN - ORD
1 stop13h 19mFrontier
Fri 1/210:12 amORD - TTN
1 stop12h 47mFrontier
Deal found 12/22$462
This Frontier deal was found by Cheapflights users on 12/20. 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.
Sat 12/205:13 pmTTN - ORD
1 stop8h 18mFrontier
Fri 1/210:12 amORD - TTN
1 stop12h 47mFrontier
Deal found 12/20$482
This Kiwi.com deal was found by Cheapflights users on 12/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:10 amTTN - ORD
1 stop29h 08mMultiple Airlines
Mon 1/59:09 pmORD - TTN
2 stops47h 47mMultiple Airlines
Deal found 12/20$487

Find flight deals from Trenton to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Trenton (TTN) to Chicago (CHI). 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 December 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$145
(Expedia)

One-way from

$64
(Frontier)

Popular in

August

Cheapest in

January

Average price

$276
Provider with most accurate pricing for Trenton-Mercer-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Trenton-Mercer-Chicago (CHI) flights.
Search Deals
From Trenton-Mercer to Chicago (CHI)
Search Deals
One-way flight from Trenton-Mercer to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trenton to Chicago 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 December 22, 2025.
Use the filters below to find and compare flights from Trenton to Chicago that are best for you.

Fly from

Trenton

Fly to

Chicago

Route

Depart

Return

Price

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 1/29

8:38 pm-10:35 am

1 stop14h 57m

Chicago O'Hare Intl

Sat 1/31

9:25 am-8:36 am

1 stop22h 11m

$145

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 1/22

8:38 pm-10:35 am

1 stop14h 57m

Chicago O'Hare Intl

Sat 1/24

9:15 am-11:26 am

1 stop25h 11m

$145

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Sat 2/7

8:19 pm-9:10 am

1 stop13h 51m

Chicago O'Hare Intl

Tue 2/10

8:30 am-11:39 pm

1 stop14h 09m

$146

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Wed 2/25

8:00 am-3:52 pm

1 stop8h 52m

Chicago O'Hare Intl

Thu 2/26

12:15 pm-11:59 pm

1 stop10h 44m

$162

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Tue 2/24

8:00 am-3:52 pm

1 stop8h 52m

Chicago O'Hare Intl

Thu 2/26

12:15 pm-11:59 pm

1 stop10h 44m

$162

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Mon 2/23

11:54 am-11:15 pm

1 stop12h 21m

Chicago O'Hare Intl

Sat 2/28

8:15 am-6:01 pm

1 stop8h 46m

$162

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Mon 2/23

11:54 am-11:15 pm

1 stop12h 21m

Chicago O'Hare Intl

Thu 2/26

12:15 pm-11:59 pm

1 stop10h 44m

$162

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Tue 2/24

8:00 am-3:52 pm

1 stop8h 52m

Chicago O'Hare Intl

Sat 2/28

8:15 am-6:01 pm

1 stop8h 46m

$162

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 4/9

5:13 pm-11:03 pm

1 stop6h 50m

Chicago O'Hare Intl

Mon 4/13

10:12 am-11:59 pm

1 stop12h 47m

$162

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Wed 2/25

8:00 am-3:52 pm

1 stop8h 52m

Chicago O'Hare Intl

Sat 2/28

8:15 am-6:01 pm

1 stop8h 46m

$162

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 23 results
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Compare providers for flights from Trenton to Chicago

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Trenton to Chicago in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Trenton, New Jersey-Chicago flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Trenton, New Jersey-Chicago flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Trenton, New Jersey-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Trenton, New Jersey-Chicago flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Trenton, New Jersey-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Trenton to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Trenton 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 Trenton to Chicago

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

Currently, December is the cheapest month in which you can book a flight from Trenton, New Jersey to Chicago (average of $48). Flying from Trenton, New Jersey to Chicago in July is currently the most expensive (average of $126). 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 TTN to CHI?

Find hourly flight availability from Trenton to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2025.

It’s optimal to fly from Trenton, New Jersey to Chicago in the morning. By choosing this option you can save up to 51% on the cost of your flight, compared to a flight in the evening.

Related info for your journey

Find useful and relevant information for your journey from Trenton to Chicago. 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 from for flights from Trenton to Chicago?

    Most people fly from Trenton-Mercer (TTN) if they book a flight from Trenton to Chicago. On average, Trenton-Mercer has 0 outbound flights to Chicago per day from 0 airlines. Trenton-Mercer is conveniently located just 4.8 mi from Trenton’s city center.

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

    Airlines like Frontier fly from Trenton, New Jersey to Chicago in about 14h 57m. The time it takes to get you to your destination can typically vary by up to . There are 690 mi between Trenton, New Jersey and Chicago.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Trenton to Chicago 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 Trenton, New Jersey to Chicago?

    Currently, December is the cheapest month in which you can book a flight from Trenton, New Jersey to Chicago (average of $48). Flying from Trenton, New Jersey to Chicago in July is currently the most expensive (average of $126). 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
Merrillville
Hammond
Porter
Benton Harbor

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