$166 Cheap flight deals from St. Louis (STL) to Tri-Cities (PSC)

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Airfares from $166 One Way, $366 Round Trip from St. Louis to Tri-Cities

Prices starting at $366 for return flights and $166 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.

Fri, May 9 - Mon, May 12
STL
St. Louis
PSC
Pasco
$366 Roundtrip, found 5 days ago
$366
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, May 9 from St. Louis to Pasco, returning Mon, May 12, priced at $366 found 5 days ago
Fri, May 30 - Mon, Jun 2
STL
St. Louis
PSC
Pasco
$396 Roundtrip, found 5 days ago
$396
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, May 30 from St. Louis to Pasco, returning Mon, Jun 2, priced at $396 found 5 days ago
Fri, May 9 - Mon, May 12
STL
St. Louis
PSC
Pasco
$417 Roundtrip, found 5 days ago
$417
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, May 9 from St. Louis to Pasco, returning Mon, May 12, priced at $417 found 5 days ago
Fri, Aug 29 - Tue, Sep 2
STL
St. Louis
PSC
Pasco
$430 Roundtrip, found 4 days ago
$430
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Aug 29 from St. Louis to Pasco, returning Tue, Sep 2, priced at $430 found 4 days ago
Sat, May 17 - Sat, May 24
STL
St. Louis
PSC
Pasco
$432 Roundtrip, found 2 days ago
$432
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, May 17 from St. Louis to Pasco, returning Sat, May 24, priced at $432 found 2 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
PSC
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

St. Louis to Tri-Cities

Orbitz assures that you will receive cheap air fares on flights from St. Louis to Tri-Cities and special deals that give you guaranteed low prices on hotels, cruises, car rentals, and anything else you need on your trip.

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Frequently asked questions

What is the shortest flight from St. Louis to Tri-Cities?
The shortest flight from STL to Tri-Cities Airport is 4 hours and 44 minutes. Bring something extra to stop you from getting bored, like that new best-seller or your travel journal.
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.