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$75+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — CHI
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap 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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$150
(Frontier)

One-way from

$75
(Booking.com)

Popular in

August

Cheapest in

January

Average price

$182
Provider with most accurate pricing for Trenton-Mercer-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Trenton-Mercer-Chicago (CHI) flights.
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From Trenton-Mercer to Chicago (CHI)
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One-way flight from Trenton-Mercer to Chicago (CHI)
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Highest demand for flights based on searches. 9% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find 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 January 15, 2026.

This Frontier deal was found by Cheapflights users on 1/12. 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 3/148:40 am
TTN
-
ORD
1 stop7h 45m
Frontier
Tue 3/174:18 pm
ORD
-
TTN
1 stop6h 41m
Frontier
Deal found 1/12$150
This Expedia deal was found by Cheapflights users on 1/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/298:38 pm
TTN
-
ORD
1 stop14h 57m
Frontier
Sat 1/319:15 am
ORD
-
TTN
1 stop25h 11m
Frontier
Deal found 1/14$160
This CheapOair deal was found by Cheapflights users on 1/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/283:21 pm
TTN
-
ORD
1 stop20h 20m
Frontier
Sat 1/319:15 am
ORD
-
TTN
1 stop25h 11m
Frontier
Deal found 1/14$161
This Frontier deal was found by Cheapflights users on 1/12. 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 2/2311:54 am
TTN
-
ORD
1 stop12h 21m
Frontier
Thu 2/2612:15 pm
ORD
-
TTN
1 stop10h 44m
Frontier
Deal found 1/12$170
This Gotogate deal was found by Cheapflights users on 1/13. 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.
Mon 3/26:45 am
TTN
-
ORD
1 stop15h 49m
Frontier
Tue 3/104:18 pm
ORD
-
TTN
1 stop6h 41m
Frontier
Deal found 1/13$175
This Frontier deal was found by Cheapflights users on 1/14. 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 3/211:54 am
TTN
-
ORD
1 stop12h 21m
Frontier
Thu 3/512:15 pm
ORD
-
TTN
1 stop10h 42m
Frontier
Deal found 1/14$179
This Booking.com deal was found by Cheapflights users on 1/14. 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 2/271:52 pm
TTN
-
ORD
1 stop9h 55m
Frontier
Wed 3/48:30 am
ORD
-
TTN
1 stop24h 16m
Frontier
Deal found 1/14$180
This CheapOair deal was found by Cheapflights users on 1/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/271:52 pm
TTN
-
ORD
1 stop9h 55m
Frontier
Sun 3/17:35 am
ORD
-
TTN
1 stop26h 34m
Frontier
Deal found 1/12$191
This Frontier deal was found by Cheapflights users on 1/13. 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 3/73:04 pm
TTN
-
ORD
1 stop9h 34m
Frontier
Wed 3/114:18 pm
ORD
-
TTN
1 stop6h 41m
Frontier
Deal found 1/13$194
This Kiwi.com deal was found by Cheapflights users on 1/14. 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.
Mon 3/307:30 pm
TTN
-
RFD
1 stop18h 04m
Allegiant Air
Thu 4/27:39 pm
RFD
-
TTN
1 stop12h 55m
Allegiant Air
Deal found 1/14$494

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 January 15, 2026.
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

Sat 3/14

8:40 am-3:25 pm

1 stop7h 45m

Chicago O'Hare Intl

Tue 3/17

4:18 pm-11:59 pm

1 stop6h 41m

$150

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

9:15 am-11:26 am

1 stop25h 11m

$160

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-9:14 pm

1 stop10h 02m

$160

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 2/5

8:38 pm-10:35 am

1 stop14h 57m

Chicago O'Hare Intl

Sat 2/7

9:25 am-7:24 pm

1 stop8h 59m

$161

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

$170

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Wed 1/28

3:21 pm-10:41 am

1 stop20h 20m

Chicago O'Hare Intl

Sat 1/31

9:15 am-11:26 am

1 stop25h 11m

$171

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Mon 3/2

6:45 am-9:34 pm

1 stop15h 49m

Chicago O'Hare Intl

Tue 3/10

4:18 pm-11:59 pm

1 stop6h 41m

$175

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Fri 2/27

1:52 pm-10:47 pm

1 stop9h 55m

Chicago O'Hare Intl

Wed 3/4

8:30 am-9:46 am

1 stop24h 16m

$180

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Fri 2/27

1:52 pm-10:47 pm

1 stop9h 55m

Chicago O'Hare Intl

Sun 3/1

7:35 am-11:09 am

1 stop26h 34m

$191

TrentonChicago

TTN - RFD

TTNRFD

Trenton-Mercer

Mon 3/30

7:30 pm-12:34 pm

1 stop18h 04m

Chicago Greater Rockford

Thu 4/2

7:39 pm-9:34 am

1 stop12h 55m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

Showing 1-10 of 24 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 January.
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.

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 and Allegiant Air fly from Trenton, New Jersey to Chicago in about 7h 45m. The time it takes to get you to your destination can typically vary by up to 10h 19m. There are 690 mi between Trenton, New Jersey and Chicago. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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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