Cheap Flights from Belleville (BLV) to Tri-Cities (TRI)

Popular airlines from Belleville, IL (BLV-MidAmerica-St. Louis) to Tri-Cities, TN (TRI-Tri-Cities Regional)

Frequently asked questions

How much does a flight from MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI) cost?
Grab a cheap one-way flight or cheap return flight from MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI)?
The cheapest month to fly from BLV to TRI is , when there's less demand. Off-peak months are typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BLV to TRI. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI)?
There aren't any daily nonstop flights departing from MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from BLV to TRI?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a number of factors, such as the season 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 MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI)?
Opt for a flight from MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time 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 MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI) last-minute?
Holding off until just before your departure to book a flight from BLV to TRI often results in higher prices. While you might find some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans to maximize your chances of landing a bargain.
Is it cheaper to book a BLV to TRI flight and hotel package?
Compared with arranging hotels and flights separately, booking a BLV to TRI flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place will take the stress out of travel planning. Just secure your flights and choose from our wide range of stays, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from MidAmerica-St. Louis Airport (BLV) to Tri-Cities Regional Airport (TRI)?
If you reserved your BLV to TRI flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

Travel information

Origin airport
MidAmerica-St. Louis
Destination airport
Tri-Cities Regional
Distance
430 mi

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Belleville to Tri-Cities Flights

The cheapest times to fly from Belleville to Tri-Cities

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

 

The best time to book a flight from Belleville to Tri-Cities

Sunday is one of the best days to book for cheap flights from Belleville to Tri-Cities: 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 Belleville to Tri-Cities

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 Belleville to Tri-Cities in 2026. 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 Belleville to Tri-Cities 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 Belleville to Tri-Cities 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.

 

Belleville to Tri-Cities Flights

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*Available to One Key members.