$254 Cheap flight deals from St. Louis (STL) to Tri-Cities (TRI)

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Airfares from $254 One Way, $318 Round Trip from St. Louis to Tri-Cities

Prices starting at $318 for return flights and $254 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.

Wed, Dec 25 - Mon, Dec 30
STL
St. Louis
TRI
Tri-Cities
$318 Roundtrip, found 5 days ago
$318
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Dec 25 from St. Louis to Tri-Cities, returning Mon, Dec 30, priced at $318 found 5 days ago
Tue, Dec 24 - Tue, Dec 31
STL
St. Louis
TRI
Tri-Cities
$378 Roundtrip, found 5 days ago
$378
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Dec 24 from St. Louis to Tri-Cities, returning Tue, Dec 31, priced at $378 found 5 days ago
Tue, Dec 24 - Sat, Dec 28
STL
St. Louis
TRI
Tri-Cities
$433 Roundtrip, found 5 days ago
$433
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Dec 24 from St. Louis to Tri-Cities, returning Sat, Dec 28, priced at $433 found 5 days ago
Tue, Dec 24 - Mon, Dec 30
STL
St. Louis
TRI
Tri-Cities
$443 Roundtrip, found 5 days ago
$443
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Dec 24 from St. Louis to Tri-Cities, returning Mon, Dec 30, priced at $443 found 5 days ago
Tue, Dec 24 - Mon, Dec 30
STL
St. Louis
TRI
Tri-Cities
$448 Roundtrip, found 5 days ago
$448
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Dec 24 from St. Louis to Tri-Cities, returning Mon, Dec 30, priced at $448 found 5 days 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

For the best available deals on flights from St. Louis to Tri-Cities, look no further than Orbitz. Offering the perfect packages with cutting-edge mobile tools, Orbitz is your ideal destination.

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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.