
$171 Cheap Frontier Airlines flights Portland (PDX) to St. Louis (STL)
Prices were available within the past 7 days and start at $171 for one-way flights and $380 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Mar 26 - Sun, Mar 29
PDX
Portland
STL
St. Louis
$380 Roundtrip, found 1 day ago
$380
Roundtrip
found 1 day ago

Thu, Mar 26 - Sat, Mar 28
PDX
Portland
STL
St. Louis
$402 Roundtrip, found 1 day ago
$402
Roundtrip
found 1 day ago

Fri, Mar 27 - Sat, Mar 28
PDX
Portland
STL
St. Louis
$430 Roundtrip, found 1 day ago
$430
Roundtrip
found 1 day ago
Find the cheapest month to fly from Portland (PDX) to St. Louis (STL)
January is typically the cheapest month to fly
From $158 - $433 per traveler.
Origin airport | Portland Intl. |
|---|---|
Destination airport | Lambert-St. Louis Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United |
Popular airline | American Airlines |
Distance | 2725 km |
Most Popular Frontier Airlines Routes from Portland
Most Popular Frontier Airlines Routes from St. Louis
- Cincinnati to Orlando (CVG - MCO)
- Las Vegas to San Francisco (LAS - SFO)
- Chicago to Phoenix (ORD - PHX)
- Newark Liberty Intl. Airport to Phoenix (EWR - PHX)
- Hartford to San Juan (BDL - SJU)
- Las Vegas to San Juan (LAS - SJU)
- New York to Fort Lauderdale (LGA - FLL)
- San Antonio to Orlando (SAT - MCO)
- New York to Orlando (JFK - MCO)
- Atlanta to Denver (ATL - DEN)
Popular Domestic Routes in Lambert-St. Louis Intl.
- Newark Liberty Intl. Airport to Phoenix (EWR - PHX)
- New York to Atlanta (JFK - ATL)
- Chicago to Phoenix (ORD - PHX)
- Chicago to San Antonio (ORD - SAT)
- Newark Liberty Intl. Airport to Atlanta (EWR - ATL)
- Chicago to Cancun (ORD - CUN)
- Chicago to San Antonio (ORD - SAT)
- Detroit to Tampa (DTW - TPA)
- Las Vegas to San Francisco (LAS - SFO)
- Atlanta to New York (ATL - LGA)