Cheap Flights from Trenton (TTN) to Belleville (BLV)

Popular airlines from Trenton–Mercer Airport (TTN) to Belleville, IL (BLV-MidAmerica-St. Louis)

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to MidAmerica-St. Louis Airport (BLV) cost?
Snag a cheap one-way flight or cheap return flight from Mercer Airport (TTN) to MidAmerica-St. Louis Airport (BLV) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Mercer Airport (TTN) to MidAmerica-St. Louis Airport (BLV)?
The cheapest month to fly from TTN to BLV is , when there's less demand. Off-peak season is generally when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Mercer Airport (TTN) to MidAmerica-St. Louis Airport (BLV)?
To find the cheapest airline that'll fly you from TTN to BLV, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Mercer Airport (TTN) to MidAmerica-St. Louis Airport (BLV)?
You'll need to catch a flight with a layover if you're traveling from Mercer Airport (TTN) to MidAmerica-St. Louis Airport (BLV). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from TTN to BLV?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a number of factors, including the airline and season.*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 MidAmerica-St. Louis Airport (BLV)?
To touch down at MidAmerica-St. Louis Airport (BLV) on schedule, book a flight that leaves Mercer Airport (TTN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 MidAmerica-St. Louis Airport (BLV) last-minute?
Last-minute bookings from TTN to BLV are generally more expensive. To secure the cheapest rates, start searching for flights early. That being said, if you can play around with your travel dates, it's possible to find a cheap ticket just before your departure.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to MidAmerica-St. Louis Airport (BLV)?
Usually, it's possible to cancel or reschedule your TTN to BLV flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Mercer
Destination airport
MidAmerica-St. Louis
Distance
808 mi

Book with confidence

Book with confidence

Trenton to Belleville Flights

The cheapest times to fly from Trenton to Belleville

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 Belleville are during the month of . You can find some of the cheapest flights from Trenton to Belleville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Trenton to Belleville

Sunday is one of the best days to book for cheap flights from Trenton to Belleville: 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 Belleville

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 Belleville in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Belleville 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 Belleville 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.

 

Trenton to Belleville Flights

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*Available to One Key members.