$219 Cheap Flights from Moline (MLI) to Tri-Cities (TRI)

View $219 flight on Wed, Oct 1, 2025Opens in a new window

Popular airlines from Quad City Intl. Airport (MLI) to Tri-Cities, TN (TRI-Tri-Cities Regional)

Cheap Flights from Moline to Tri-Cities (MLI-TRI)

Prices were available within the past 7 days and start at $219 for one-way flights and $339 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Oct 4 - Sat, Oct 18
MLI
Moline
TRI
Tri-Cities
$339 Roundtrip, found 2 days ago
$339
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Oct 4 from Moline to Tri-Cities, returning Sat, Oct 18, priced at $339 found 2 days ago
Delta
Wed, Oct 1 - Tue, Oct 7
MLI
Moline
TRI
Tri-Cities
$354 Roundtrip, found 22 hours ago
$354
Roundtrip
found 22 hours ago
Select Delta flight, departing Wed, Oct 1 from Moline to Tri-Cities, returning Tue, Oct 7, priced at $354 found 22 hours ago
Delta
Sun, Nov 2 - Tue, Nov 18
MLI
Moline
TRI
Tri-Cities
$359 Roundtrip, found 2 days ago
$359
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Nov 2 from Moline to Tri-Cities, returning Tue, Nov 18, priced at $359 found 2 days ago
American Airlines
Wed, Oct 1 - Tue, Oct 7
MLI
Moline
TRI
Tri-Cities
$367 Roundtrip, found 22 hours ago
$367
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Wed, Oct 1 from Moline to Tri-Cities, returning Tue, Oct 7, priced at $367 found 22 hours ago
Delta
Mon, Oct 6 - Thu, Oct 23
MLI
Moline
TRI
Tri-Cities
$369 Roundtrip, found 2 days ago
$369
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Oct 6 from Moline to Tri-Cities, returning Thu, Oct 23, priced at $369 found 2 days ago
Delta
Wed, Sep 24 - Wed, Oct 1
MLI
Moline
TRI
Tri-Cities
$373 Roundtrip, found 6 days ago
$373
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Sep 24 from Moline to Tri-Cities, returning Wed, Oct 1, priced at $373 found 6 days ago
Delta
Wed, Nov 5 - Sun, Nov 23
MLI
Moline
TRI
Tri-Cities
$374 Roundtrip, found 2 days ago
$374
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Nov 5 from Moline to Tri-Cities, returning Sun, Nov 23, priced at $374 found 2 days ago
Delta
Sat, Oct 4 - Mon, Oct 20
MLI
Moline
TRI
Tri-Cities
$383 Roundtrip, found 2 days ago
$383
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Oct 4 from Moline to Tri-Cities, returning Mon, Oct 20, priced at $383 found 2 days ago
American Airlines
Tue, Sep 16 - Tue, Sep 23
MLI
Moline
TRI
Tri-Cities
$387 Roundtrip, found 3 days ago
$387
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Sep 16 from Moline to Tri-Cities, returning Tue, Sep 23, priced at $387 found 3 days ago
American Airlines
Wed, Oct 1 - Tue, Oct 7
MLI
Moline
TRI
Tri-Cities
$395 Roundtrip, found 22 hours ago
$395
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Wed, Oct 1 from Moline to Tri-Cities, returning Tue, Oct 7, priced at $395 found 22 hours ago
Flights from Moline (MLI) to Tri-Cities (TRI)
Origin airport
Quad City Intl.
Destination airport
Tri-Cities Regional
Airlines serving
American Airlines, Delta
Roundtrip price
$338
Distance
553 mi

Moline to Tri-Cities Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Moline 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 Moline 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 Moline to Tri-Cities in 2025. You can also book with separate airlines for your outbound and return journeys, from $219 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 Moline 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 Moline 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.

 

Frequently asked questions

How much does a flight from Quad City Intl. Airport (MLI) to Tri-Cities Regional Airport (TRI) cost?
Snag a cheap one-way flight from $219 or cheap return flight from $339 from Quad City Intl. Airport (MLI) 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 Quad City Intl. Airport (MLI) to Tri-Cities Regional Airport (TRI)?
October is the least expensive month to fly from MLI to TRI. Traveling during quieter months is often the key to scoring lower fares.
What is the cheapest airline that flies from Quad City Intl. Airport (MLI) to Tri-Cities Regional Airport (TRI)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest MLI to TRI flight.
How many flights per day from Quad City Intl. Airport (MLI) to Tri-Cities Regional Airport (TRI)?
There are no daily nonstop flights departing from Quad City Intl. Airport (MLI) to Tri-Cities Regional Airport (TRI). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from MLI to TRI?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, such as 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 Quad City Intl. Airport (MLI) to Tri-Cities Regional Airport (TRI)?
To touch down at Tri-Cities Regional Airport (TRI) on schedule, choose a flight that leaves Quad City Intl. Airport (MLI) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Quad City Intl. Airport (MLI) to Tri-Cities Regional Airport (TRI) last-minute?
Waiting until just before your trip to book your flight from MLI to TRI generally means paying more. While you may come across some last-minute deals, 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 MLI to TRI flight and hotel package?
You'll generally save money by securing a MLI to TRI 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 it all in one place. After choosing your ideal accommodations and flights, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Quad City Intl. Airport (MLI) to Tri-Cities Regional Airport (TRI)?
If you reserved your MLI 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 fare type 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, visit our Customer Service portal for more information.

Explore a world of travel with Expedia

*Available to One Key members.