$82 Cheap Flights from Trenton (TTN) to Chicago (MDW)

View $82 flight on Thu, Oct 2, 2025Opens in a new window

Popular airlines from Trenton–Mercer Airport (TTN) to Chicago Midway Airport (MDW)

Cheap Flights from Trenton to Chicago (TTN-MDW)

Prices were available within the past 7 days and start at $82 for one-way flights and $179 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Oct 20 - Thu, Oct 23
TTN
Trenton
MDW
Chicago
$179 Roundtrip, found 6 hours ago
$179
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Mon, Oct 20 from Trenton to Chicago, returning Thu, Oct 23, priced at $179 found 6 hours ago
Frontier Airlines
Thu, Sep 18 - Sat, Sep 20
TTN
Trenton
MDW
Chicago
$199 Roundtrip, found 9 hours ago
$199
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Sep 18 from Trenton to Chicago, returning Sat, Sep 20, priced at $199 found 9 hours ago
Frontier Airlines
Fri, Oct 17 - Sat, Oct 18
TTN
Trenton
MDW
Chicago
$200 Roundtrip, found 5 hours ago
$200
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, Oct 17 from Trenton to Chicago, returning Sat, Oct 18, priced at $200 found 5 hours ago
Frontier Airlines
Thu, Sep 18 - Sat, Sep 20
TTN
Trenton
MDW
Chicago
$202 Roundtrip, found 9 hours ago
$202
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Sep 18 from Trenton to Chicago, returning Sat, Sep 20, priced at $202 found 9 hours ago
Frontier Airlines
Mon, Oct 20 - Thu, Oct 23
TTN
Trenton
MDW
Chicago
$205 Roundtrip, found 1 day ago
$205
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Oct 20 from Trenton to Chicago, returning Thu, Oct 23, priced at $205 found 1 day ago
Frontier Airlines
Fri, Oct 24 - Thu, Oct 30
TTN
Trenton
MDW
Chicago
$210 Roundtrip, found 1 day ago
$210
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Oct 24 from Trenton to Chicago, returning Thu, Oct 30, priced at $210 found 1 day ago
Frontier Airlines
Mon, Oct 6 - Sun, Oct 12
TTN
Trenton
MDW
Chicago
$212 Roundtrip, found 4 hours ago
$212
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Mon, Oct 6 from Trenton to Chicago, returning Sun, Oct 12, priced at $212 found 4 hours ago
Frontier Airlines
Fri, Oct 24 - Sun, Oct 26
TTN
Trenton
MDW
Chicago
$215 Roundtrip, found 1 hour ago
$215
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Oct 24 from Trenton to Chicago, returning Sun, Oct 26, priced at $215 found 1 hour ago
Frontier Airlines
Mon, Oct 20 - Sat, Oct 25
TTN
Trenton
MDW
Chicago
$217 Roundtrip, found 6 hours ago
$217
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Mon, Oct 20 from Trenton to Chicago, returning Sat, Oct 25, priced at $217 found 6 hours ago
Frontier Airlines
Mon, Oct 20 - Thu, Oct 23
TTN
Trenton
MDW
Chicago
$218 Roundtrip, found 6 hours ago
$218
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Mon, Oct 20 from Trenton to Chicago, returning Thu, Oct 23, priced at $218 found 6 hours ago

Find the cheapest month to fly from Trenton (TTN) to Chicago (MDW)

September is typically the cheapest month to fly

From $128 - $546 per traveler.

Graph displaying average flight prices per month

Alternative airports near Chicago

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to O'Hare Intl. ORD. Cheapest option available. Average driving time to city center is 23 minutes. Flights from $666
ORD
O'Hare Intl.
Cheapest
Average driving time to city center23 min
Flights from $666
Flights from Trenton (TTN) to Chicago (MDW)
Origin airport
Mercer
Destination airport
Midway Intl.
Airlines serving
Frontier Airlines
Roundtrip price
$178
Distance
680 mi

Trenton to Chicago Flights

The cheapest times to fly from Trenton to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Trenton to Chicago are during the month of October. You can find some of the cheapest flights from Trenton to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Trenton to Chicago

Sunday is one of the best days to book for cheap flights from Trenton to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Trenton to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Trenton to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $82 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Trenton to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Trenton to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to Midway Intl. Airport (MDW) cost?
Snag a cheap one-way flight from $82 or cheap return flight from $179 from Mercer Airport (TTN) to Midway Intl. Airport (MDW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Mercer Airport (TTN) to Midway Intl. Airport (MDW)?
Traveling in October is a good way to save, as it's the cheapest month for flights between TTN and MDW. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Mercer Airport (TTN) to Midway Intl. Airport (MDW)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest TTN to MDW flight.
How many flights per day from Mercer Airport (TTN) to Midway Intl. Airport (MDW)?
You'll need to book a flight with a layover if you're traveling from Mercer Airport (TTN) to Midway Intl. Airport (MDW). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from TTN to MDW?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary based on various factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mercer Airport (TTN) to Midway Intl. Airport (MDW)?
Opt for a flight from Mercer Airport (TTN) to Midway Intl. Airport (MDW) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Mercer Airport (TTN) to Midway Intl. Airport (MDW) last-minute?
Booking your plane ticket from TTN to MDW right before your journey is usually more expensive. But if you're flexible with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a TTN to MDW flight and hotel package?
You'll typically save money by booking a TTN to MDW flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After selecting your preferred accommodations and flights, consider adding extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Midway Intl. Airport (MDW)?
If you booked your TTN to MDW flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.