HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
O'Hare Intl

$70+ Cheap flights from Trenton, NJ (TTN) to O'Hare Intl (ORD)

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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — ORD
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Trenton to O'Hare Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Trenton to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Trenton (TTN) to O'Hare Intl (ORD). 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 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$144
(Gotogate)

One-way from

$70
(Frontier)

Popular in

August

Cheapest in

January

Average price

$179
Provider with most accurate pricing for Trenton-Mercer-Chicago O'Hare Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Trenton-Mercer-Chicago O'Hare Intl flights.
Search Deals
From Trenton-Mercer to Chicago O'Hare Intl
Search Deals
One-way flight from Trenton-Mercer to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Trenton to O'Hare Intl

Cheapest flights from Trenton to O'Hare Intl
Explore the most affordable flight options available from Trenton to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This Gotogate deal was found by Cheapflights users on 1/6. 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.
Sat 2/78:19 pmTTN - ORD
1 stop13h 51mFrontier
Tue 2/108:30 amORD - TTN
1 stop14h 09mFrontier
Deal found 1/6$144
This Frontier deal was found by Cheapflights users on 1/7. 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 amTTN - ORD
1 stop12h 21mFrontier
Tue 3/104:18 pmORD - TTN
1 stop6h 41mFrontier
Deal found 1/7$147
This Frontier deal was found by Cheapflights users on 1/7. 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 3/246:00 amTTN - ORD
1 stop10h 28mFrontier
Tue 3/314:18 pmORD - TTN
1 stop6h 41mFrontier
Deal found 1/7$150
This Frontier deal was found by Cheapflights users on 1/7. 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 amTTN - ORD
1 stop12h 21mFrontier
Thu 2/2612:15 pmORD - TTN
1 stop10h 44mFrontier
Deal found 1/7$160
This CheapOair deal was found by Cheapflights users on 1/6. 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 1/213:21 pmTTN - ORD
1 stop20h 20mFrontier
Thu 1/223:55 pmORD - TTN
1 stop18h 06mFrontier
Deal found 1/6$161
This Mytrip deal was found by Cheapflights users on 1/7. 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 1/213:21 pmTTN - ORD
1 stop20h 20mFrontier
Fri 1/2311:45 amORD - TTN
1 stop22h 24mFrontier
Deal found 1/7$167
This Frontier deal was found by Cheapflights users on 1/7. 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.
Thu 1/228:38 pmTTN - ORD
1 stop14h 57mFrontier
Mon 1/2611:51 amORD - TTN
1 stop25h 35mFrontier
Deal found 1/7$168
This CheapOair deal was found by Cheapflights users on 1/7. 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.
Sat 1/318:19 pmTTN - ORD
1 stop15h 52mFrontier
Sat 2/79:15 amORD - TTN
1 stop25h 11mFrontier
Deal found 1/7$171
This Mytrip deal was found by Cheapflights users on 1/6. 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 1/283:21 pmTTN - ORD
1 stop20h 20mFrontier
Sat 1/319:15 amORD - TTN
1 stop25h 11mFrontier
Deal found 1/6$172
This Booking.com deal was found by Cheapflights users on 1/7. 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 1/248:19 pmTTN - ORD
1 stop15h 52mFrontier
Mon 1/2611:51 amORD - TTN
1 stop6h 41mFrontier
Deal found 1/7$177

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trenton to O'Hare Intl 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 8, 2026.
Use the filters below to find and compare flights from Trenton to Chicago O'Hare Intl Airport that are best for you.

Fly from

Trenton

Fly to

O'Hare Intl

Route

Depart

Return

Price

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Mon 3/2

11:54 am-11:15 pm

1 stop12h 21m

Chicago O'Hare Intl

Tue 3/10

4:18 pm-11:59 pm

1 stop6h 41m

$147

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Tue 3/24

6:00 am-3:28 pm

1 stop10h 28m

Chicago O'Hare Intl

Tue 3/31

4:18 pm-11:59 pm

1 stop6h 41m

$150

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

$156

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

$160

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Sat 1/31

8:19 pm-11:11 am

1 stop15h 52m

Chicago O'Hare Intl

Sat 2/7

9:15 am-11:26 am

1 stop25h 11m

$161

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Wed 1/21

3:21 pm-10:41 am

1 stop20h 20m

Chicago O'Hare Intl

Sat 1/24

9:25 am-7:24 pm

1 stop8h 59m

$167

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Wed 1/21

3:21 pm-10:41 am

1 stop20h 20m

Chicago O'Hare Intl

Fri 1/23

11:45 am-11:09 am

1 stop22h 24m

$167

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 1/22

8:38 pm-10:35 am

1 stop14h 57m

Chicago O'Hare Intl

Mon 1/26

11:51 am-2:26 pm

1 stop25h 35m

$168

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Tue 3/3

8:00 am-3:52 pm

1 stop8h 52m

Chicago O'Hare Intl

Mon 3/9

4:18 pm-11:59 pm

1 stop6h 41m

$171

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Wed 2/25

8:00 am-3:52 pm

1 stop8h 52m

Chicago O'Hare Intl

Sun 3/1

7:35 am-11:09 am

1 stop26h 34m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Trenton to O'Hare Intl

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 O'Hare Intl 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 O'Hare Intl Airport 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 O'Hare Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Trenton, New Jersey-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Trenton, New Jersey-Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 O'Hare Intl Airport

What is the cheapest month to book a flight from Trenton, New Jersey to Chicago O'Hare Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Trenton, New Jersey to Chicago O'Hare Intl Airport (average of $55). Flying from Trenton, New Jersey to Chicago O'Hare Intl Airport 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 O'Hare Intl. 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 O'Hare Intl?

    Located just 4.8 mi from the city center, Trenton-Mercer is the airport most travelers will use when flying to Chicago O'Hare Intl from Trenton. Booking flights from Trenton-Mercer (TTN) to Chicago O'Hare Intl should be relatively easy as there are 0 daily outbound flights to Chicago O'Hare Intl from 0 different airlines.

  • How long is the flight from Trenton, New Jersey to Chicago O'Hare Intl Airport?

    A quick flight from Trenton, New Jersey to Chicago O'Hare Intl Airport can take about 12h 21m. Frontier provides one of the quickest options available for as low as $147. There are 690 mi between Trenton, New Jersey and Chicago O'Hare Intl Airport.

  • Can I find deals for flights from Trenton to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Trenton to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Trenton to O'Hare Intl?

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

  • Can I find deals for business class flights from Trenton to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Trenton to O'Hare Intl 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 O'Hare Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Trenton, New Jersey to Chicago O'Hare Intl Airport (average of $55). Flying from Trenton, New Jersey to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Gurnee
Elgin
Naperville
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Lake Geneva
Bridgeview
Kenosha
Warrenville
Waukegan
Aurora
Evanston

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.