Cheap Flights from Philadelphia Trenton-Mercer to Chicago

Compare Philadelphia Trenton-Mercer to Chicago flight deals

Find the cheapest month or even day of the year to fly to Chicago

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Flight deals from Philadelphia Trenton-Mercer to Chicago

Looking for a cheap last-minute deal or the best return flight from Philadelphia Trenton-Mercer Airport to Chicago? If you want to travel next month, return fares start from $390. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Philadelphia Trenton-Mercer to Chicago

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia Trenton-Mercer to Chicago flights are currently cheapest in May.

Alternative Philadelphia Trenton-Mercer to Chicago routes

Looking for the cheapest, fastest or easiest route from Philadelphia Trenton-Mercer to Chicago? You could fly into the following airports instead.

Philadelphia to Chicago: Flight information

The things to know before you go.
Cheapest flight found$272
Cheapest month to flyMay

Finding cheap flights from Philadelphia Trenton-Mercer to Chicago: Frequently asked questions

There are 4 airports in Chicago: Chicago Midway, Chicago O'Hare International, Chicago Dupage County, and Chicago Rockford.
The best price we found for a return flight from Philadelphia Trenton-Mercer to Chicago is $272. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Philadelphia Trenton-Mercer to Chicago. But we found flights with one or more stops from $272.
As of May 2026, there are no flights flying from Philadelphia Trenton-Mercer to Chicago.
The cheapest month to fly from Philadelphia Trenton-Mercer to Chicago is usually May.
If you're flying from Philadelphia Trenton-Mercer Airport, the cheapest airport near Chicago is Chicago O'Hare International – which is 25.4 km away from the centre of Chicago. We've found flights into this airport from $272.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Philadelphia Trenton-Mercer Airport to Chicago on Saturday, 16 May 2026.
No airlines currently offer direct flights between Philadelphia Trenton-Mercer Airport and Chicago. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 13°C. July is typically the warmest month in Chicago, when it usually averages around 26°C. You can expect the least rain in January. The coldest month is January, with temperatures averaging -8°C. The rainiest month is August.
Currently, Frontier Airlines offers the cheapest flight tickets to Chicago.

Travelling from Trenton-Mercer Airport (TTN) to Chicago: what you need to know

  • Chicago is one hour behind Philadelphia, where Trenton-Mercer Airport is located. Chicago runs on the UTC-5 timezone.

  • For stress-free travel, arrive at the airport two hours ahead of international flights and one hour before domestic departures. That way, you can comfortably board your TTN to Chicago flight.

  • Travelling during a peak period like a bank holiday? Expect longer lines at check-in and security. Give yourself extra leeway and arrive up to four hours before international flights and two hours before domestic departures.

  • TTN is about 48 kilometres from central Philadelphia. If you're ride-sharing, catching a cab or driving from the centre, it'll take 40 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the trip time to be around 1 hour 45 minutes.

  • Searching for a hotel close to TTN? If you're catching an early flight from Trenton-Mercer Airport to Chicago, these stays will put you moments from your departure gate:

  • Trenton-Mercer Airport gets high marks for its on-time performance. 82.45% of flights that depart TTN land on time.

  • You'll find TTN at Scotch Road, Terminal Building.

How to find the cheapest flights from Trenton-Mercer Airport (TTN) to Chicago

  • $153 is currently the lowest price for a one-way Trenton-Mercer Airport to Chicago flight. A return flight ticket starts from $272. These fares may change depending on demand and availability.

  • To find cheap flights from TTN to Chicago, book as early as you can. Airlines usually offer lower prices when flights first go on sale.

  • If you're willing to be flexible with your trip dates, use the 'Whole month' tool. It'll show you the lowest price across each month when searching for your Trenton-Mercer Airport to Chicago ticket.

  • There's no need to check every day to find out if fares have dropped when you create a Price Alert. We'll notify you the moment there's an even better deal on cheap flights from TTN to Chicago.

  • Tailor your trip with filters. Pick your preferred departure and arrival times, total journey duration and airlines. You can also sort results by 'Cheapest,' 'Fastest' or 'Best' flights from Trenton-Mercer Airport to Chicago.

Airports in Chicago

O'Hare International Airport (ORD)

  • O'Hare International Airport (ORD) is around 40 kilometres from central Chicago. If you're grabbing a cab or a ride-share, the drive takes roughly 35 minutes.

  • Getting there on public transport takes around 55 minutes.

  • The last thing you want is a lengthy journey to your hotel if you're arriving on a late flight from Trenton-Mercer Airport to Chicago. Check in to one of these accommodation options near ORD instead:

  • Explore without limits with an O'Hare International Airport rental car. Pick up your wheels from Routes Car Rentals, Dollar or Budget and see more of Chicago and beyond.

  • Lock in the best possible rate by booking your vehicle from O'Hare International Airport about four weeks ahead of your flight from TTN to Chicago.

  • The address for ORD is 10000 West O'Hare.

Chicago Midway International Airport (MDW)

  • The centre of Chicago is about 19 kilometres from Chicago Midway International Airport (MDW). After your flight from Trenton-Mercer Airport to Chicago has touched down and you've made your way to arrivals, expect a drive of around 20 minutes.

  • If you choose to travel on public transport, the ride to the centre will take you 45 minutes or so.

  • Following your TTN to Chicago flight, settle in at a hotel near MDW. These are some comfortable accommodation options that'll help you sink into relaxation mode:

  • Dollar, Hertz and Budget make collecting a Chicago Midway International Airport rental car quick and easy. These providers are located in or around the terminal and will have you on the road before long.

  • Avoid potential price surges. Securing your ride four weeks before your arrival at MDW will save you money.

  • You can find Chicago Midway International Airport at 5700 South Cicero.

Chicago Rockford International Airport (RFD)

  • Chicago Rockford International Airport (RFD) is about 137 kilometres from the centre of Chicago. It'll take you about 1 hour 25 minutes to reach the city centre by car once you've hopped off your flight from Trenton-Mercer Airport to Chicago.

  • The journey takes roughly 4 hours 15 minutes by public transport.

  • Enjoy a more leisurely start to your break by choosing a hotel near RFD after your TTN to Chicago flight. Recover from a day of travel or simply give yourself time to get your footing in a new city at:

  • Stay in control of the next part of your journey with a Chicago Rockford International Airport rental car. Budget, Alamo and National are reliable rental providers.

  • Rental providers sometimes offer promotions for early bookings, so reserve your ride from RFD ahead of your flight from Trenton-Mercer Airport to Chicago. A bit of planning goes a long way in savings.

  • Chicago Rockford International Airport can be found at 2 Airport Cir.

Best time to go to Chicago

  • Carefully consider your trip dates before securing your flight from Trenton-Mercer Airport to Chicago. The city buzzes during high season, but prices are often higher and attractions can get busy. Go to Chicago in the low season if you prefer a more relaxed vibe.

  • The warmest month in Chicago is July, with temperatures ranging between 15ºC and 29ºC. Lock in your Trenton-Mercer Airport to Chicago flight ticket then if this is the type of weather you enjoy.

  • If you want to travel in cooler conditions, search for a cheap ticket from TTN to Chicago in January when temperatures average between -12ºC and 3ºC.

More about Chicago

Explore more of United States

  • Chicago has its own special appeal, but there are so many other corners of United States just waiting to be discovered. Around 451 kilometres south-east of Chicago, a trip to Columbus will keep you on the move. Check out popular attractions like Franklin Park Conservatory and Botanical Gardens, Ohio Statehouse and German Village.

  • Around 257 kilometres south-east of Chicago, Indianapolis is another favourite stop in United States. Get a taste of what this destination has to offer at The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.