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O'Hare Intl

$80+ 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — ORD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 September 11, 2025.

Round-trip from

$143
(CheapOair)

One-way from

$80
(CheapOair)

Popular in

August

Cheapest in

January

Average price

$185
From Trenton-Mercer to Chicago O'Hare Intl
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One-way flight from Trenton-Mercer to Chicago O'Hare Intl
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Highest demand for flights based on searches. 4% potential increase in price ($10 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 September 2025
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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 September 11, 2025.

This CheapOair deal was found by Cheapflights users on 9/10. 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 10/312:30 pmTTN - ORD
1 stop12h 09mFrontier
Mon 10/65:10 amORD - TTN
1 stop5h 24mFrontier
Deal found 9/10$143
This CheapOair deal was found by Cheapflights users on 9/10. 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 9/2611:45 amTTN - ORD
1 stop8h 59mFrontier
Mon 9/295:10 amORD - TTN
1 stop5h 24mFrontier
Deal found 9/10$151
This Booking.com deal was found by Cheapflights users on 9/10. 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 9/254:57 pmTTN - ORD
1 stop27h 47mFrontier
Mon 9/295:10 amORD - TTN
1 stop5h 24mFrontier
Deal found 9/10$152
This Booking.com deal was found by Cheapflights users on 9/10. 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 9/1911:45 amTTN - ORD
1 stop8h 59mFrontier
Mon 9/295:10 amORD - TTN
1 stop5h 24mFrontier
Deal found 9/10$153
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Thu 10/164:25 pmTTN - ORD
1 stop16h 09mFrontier
Sat 10/187:43 pmORD - TTN
1 stop13h 31mFrontier
Deal found 9/10$159
This Gotogate deal was found by Cheapflights users on 9/10. 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 9/1911:45 amTTN - ORD
1 stop8h 59mFrontier
Mon 9/225:10 amORD - TTN
1 stop5h 24mFrontier
Deal found 9/10$160
This Frontier deal was found by Cheapflights users on 9/11. 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.
Fri 10/312:30 pmTTN - ORD
1 stop12h 09mFrontier
Sun 10/58:49 pmORD - TTN
1 stop13h 11mFrontier
Deal found 9/11$161
This Booking.com deal was found by Cheapflights users on 9/10. 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 9/184:57 pmTTN - ORD
1 stop27h 47mFrontier
Sun 9/218:49 pmORD - TTN
1 stop13h 11mFrontier
Deal found 9/10$162
This CheapOair deal was found by Cheapflights users on 9/10. 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 9/2612:30 pmTTN - ORD
1 stop23h 57mFrontier
Wed 10/111:45 amORD - TTN
1 stop20h 47mFrontier
Deal found 9/10$163
This Booking.com deal was found by Cheapflights users on 9/10. 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 9/184:57 pmTTN - ORD
1 stop27h 47mFrontier
Mon 9/225:10 amORD - TTN
1 stop5h 24mFrontier
Deal found 9/10$167

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 September 11, 2025.
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

Fri 10/3

12:30 pm-11:39 pm

1 stop12h 09m

Chicago O'Hare Intl

Mon 10/6

5:10 am-11:34 am

1 stop5h 24m

$143

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 9/25

4:57 pm-7:44 pm

1 stop27h 47m

Chicago O'Hare Intl

Mon 9/29

5:10 am-11:34 am

1 stop5h 24m

$151

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Fri 9/19

11:45 am-7:44 pm

1 stop8h 59m

Chicago O'Hare Intl

Mon 9/29

5:10 am-11:34 am

1 stop5h 24m

$153

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 10/16

4:25 pm-7:34 am

1 stop16h 09m

Chicago O'Hare Intl

Sat 10/18

7:43 pm-10:14 am

1 stop13h 31m

$159

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 9/25

4:57 pm-7:44 pm

1 stop27h 47m

Chicago O'Hare Intl

Sun 9/28

8:49 pm-11:00 am

1 stop13h 11m

$161

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 10/23

4:25 pm-7:34 am

1 stop16h 09m

Chicago O'Hare Intl

Thu 10/30

7:05 am-10:13 am

1 stop26h 08m

$161

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Fri 9/26

11:45 am-7:44 pm

1 stop8h 59m

Chicago O'Hare Intl

Sun 9/28

8:49 pm-11:00 am

1 stop13h 11m

$161

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Fri 10/3

12:30 pm-11:39 pm

1 stop12h 09m

Chicago O'Hare Intl

Sun 10/5

8:49 pm-11:00 am

1 stop13h 11m

$161

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 10/9

4:25 pm-7:34 am

1 stop16h 09m

Chicago O'Hare Intl

Sat 10/18

7:43 pm-10:14 am

1 stop13h 31m

$161

TrentonChicago

TTN - ORD

TTNORD

Trenton-Mercer

Thu 9/18

4:57 pm-7:44 pm

1 stop27h 47m

Chicago O'Hare Intl

Sun 9/21

8:49 pm-11:00 am

1 stop13h 11m

$162

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
1
2

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, August is the cheapest month in which you can book a flight from Trenton, New Jersey to Chicago O'Hare Intl Airport (average of $245). Flying from Trenton, New Jersey to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 09m. Frontier provides one of the quickest options available for as low as $143. 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, August is the cheapest month in which you can book a flight from Trenton, New Jersey to Chicago O'Hare Intl Airport (average of $245). Flying from Trenton, New Jersey to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Beloit
Racine
Rockford
Orland Park
Oak Brook
Downers Grove
Naperville
Elk Grove Village
Evanston
Merrillville
Bridgeview
Warrenville

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