Cheap flights from St. Louis to Portland (STL - PDX)

Dec 3 — Dec 101

The best prices from Lambert-St Louis to Portland are usually found in February or January, booked 28 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

How to find the cheapest flight from St. Louis (STL) to Portland (PDX)

All the information you need to plan the best STL to PDX flight in 2022: compare St. Louis to Portland flight prices with the expected peak season, weather and rainfall in Portland.



$291 - $707



41 - 69.8 °F



0.7 - 5.6 inches

Popular inJulyHigh demand for flights, 40% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 32% potential price drop
Round-trip from$291From Lambert-St Louis to Portland
One-way from$156One-way flight from Lambert-St Louis to Portland

Alternative routes for St. Louis to Portland

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from St. Louis to Portland

The chart below displays the airlines Cheapflights users traveling from St. Louis to Portland choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$16Average$22FlexibilityNo cancel feeOn-time66%COVID-19 safety
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Spirit AirlinesCheapest$140Average$205FlexibilityNo cancel feeOn-time65%COVID-19 safety
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FrontierCheapest$140Average$347FlexibilityNo cancel feeOn-time62%COVID-19 safety
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Alaska AirlinesCheapest$257Average$464FlexibilityNo cancel feeOn-time75%COVID-19 safety
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DeltaCheapest$267Average$516FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
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American AirlinesCheapest$310Average$588FlexibilityNo cancel feeOn-time71%COVID-19 safety
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United AirlinesCheapest$318Average$497FlexibilityNo cancel feeOn-time69%COVID-19 safety
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Weekly flight availability from St. Louis to Portland

See how many times per day planes take to the skies headed from St. Louis to Portland
Sunday0daily flights
Monday0daily flights
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Friday0daily flights
Saturday1daily flight