$244 Cheap flight deals from St. Louis (STL) to Tri-Cities (TRI)

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Airfares from $244 One Way, $378 Round Trip from St. Louis to Tri-Cities

Prices starting at $378 for return flights and $244 for one-way flights to Tri-Cities were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Feb 4 - Tue, Feb 11
STL
St. Louis
TRI
Tri-Cities
$378 Roundtrip, found 12 hours ago
$378
Roundtrip
found 12 hours ago
Select Delta flight, departing Tue, Feb 4 from St. Louis to Tri-Cities, returning Tue, Feb 11, priced at $378 found 12 hours ago
Tue, Feb 4 - Sat, Feb 8
STL
St. Louis
TRI
Tri-Cities
$388 Roundtrip, found 12 hours ago
$388
Roundtrip
found 12 hours ago
Select Delta flight, departing Tue, Feb 4 from St. Louis to Tri-Cities, returning Sat, Feb 8, priced at $388 found 12 hours ago
Thu, Feb 6 - Sun, Feb 9
STL
St. Louis
TRI
Tri-Cities
$398 Roundtrip, found 11 hours ago
$398
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Thu, Feb 6 from St. Louis to Tri-Cities, returning Sun, Feb 9, priced at $398 found 11 hours ago
Thu, Feb 6 - Sun, Feb 9
STL
St. Louis
TRI
Tri-Cities
$403 Roundtrip, found 11 hours ago
$403
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Thu, Feb 6 from St. Louis to Tri-Cities, returning Sun, Feb 9, priced at $403 found 11 hours ago
Thu, Feb 6 - Sat, Feb 8
STL
St. Louis
TRI
Tri-Cities
$408 Roundtrip, found 12 hours ago
$408
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Thu, Feb 6 from St. Louis to Tri-Cities, returning Sat, Feb 8, priced at $408 found 12 hours ago

More About Flying To Tri-Cities from St. Louis

Route Information for Flights from St. Louis to Tri-Cities

Origin Airport IATA Code
STL
Destination Airport IATA Code
TRI
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

St. Louis to Tri-Cities

The perfect trip begins with Orbitz. From booking your flights from St. Louis to Tri-Cities to finding the best hotels, Orbitz has got it covered.

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Not only does booking with us ensure guaranteed low prices, but Orbitz does the hard work, leaving you to relax. Just tell us what you want, from St. Louis to Tri-Cities flights, to great deals on hotels and car rental, and activities and tours, and we will do all the rest.

Frequently asked questions

What is the shortest flight from St. Louis to Tri-Cities?
Keep that binge-watch you had planned for your hotel room, because the trip from Lambert Field to TRI can be as quick as 2 hours and 27 minutes.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won’t keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.