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Flight tickets from St Louis (STL) to Portland (PDX) from ₹ 13,309

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      Travellers and cabin class, 1 Adult, Economy
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      Compare St Louis to Portland flight deals

      Find the cheapest month or even day of the year to fly to Portland

      Book the best Portland fare with no extra fees

      Flight deals from St Louis to Portland

      Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Portland Airport? If you want to travel next month, return fares start from ₹ 31,413. Find the lowest prices on one-way and return tickets right here.
      Portland.₹ 13,309 per passenger.Departing Sun, 22 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 22 Nov, arriving in Portland.Price includes taxes and charges.From ₹ 13,309, select.
      Portland.₹ 13,316 per passenger.Departing Wed, 7 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 7 Oct, arriving in Portland.Price includes taxes and charges.From ₹ 13,316, select.
      Portland.₹ 13,398 per passenger.Departing Wed, 23 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 23 Sep, arriving in Portland.Price includes taxes and charges.From ₹ 13,398, select.
      Portland.₹ 17,438 per passenger.Departing Sun, 30 May.One-way flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Sun, 30 May, arriving in Portland.Price includes taxes and charges.From ₹ 17,438, select.
      Portland.₹ 17,979 per passenger.Departing Tue, 1 Dec.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from St Louis on Tue, 1 Dec, arriving in Portland.Price includes taxes and charges.From ₹ 17,979, select.
      Portland.₹ 19,233 per passenger.Departing Thu, 1 Oct.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from St Louis on Thu, 1 Oct, arriving in Portland.Price includes taxes and charges.From ₹ 19,233, select.
      Portland.₹ 22,226 per passenger.Departing Wed, 9 Jun.One-way flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Wed, 9 Jun, arriving in Portland.Price includes taxes and charges.From ₹ 22,226, select.
      Portland.₹ 26,862 per passenger.Departing Thu, 24 Sep.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from St Louis on Thu, 24 Sep, arriving in Portland.Price includes taxes and charges.From ₹ 26,862, select.

      Find the cheapest month to fly from St Louis to Portland

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Portland flights are currently cheapest in November.
      Sep
      from ₹ 13,398
      Oct
      from ₹ 13,316
      Nov
      from ₹ 13,309
      Dec
      from ₹ 17,979
      Jan
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      Feb
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      Mar
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      Apr
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      May
      from ₹ 17,438
      Jun
      from ₹ 22,226
      Jul
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      Aug
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      Direct flights from St Louis to Portland

      Alaska Airlines
      Southwest Airlines

      St Louis to Portland: Alternative routes

      Compare routes from St Louis to Portland below. You may find an airport to fly into that's cheaper, faster, or easier than Portland.

      Portland

      10km from central Portland
      ClosestCheapest
      from ₹ 13,309
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      St Louis to Portland: Flight information

      The things to know before you go.
      Cheapest flight found₹ 13,309
      Cheapest month to flyNovember
      Average flight time4 hrs, 14 mins
      Most popular airlineAlaska Airlines
      Average flights per week11

      Finding cheap flights from St Louis to Portland: Frequently asked questions

      The best price we found for a return flight from St Louis to Portland is ₹ 25,609. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      4 hours and 14 minutes is the average flight time from St Louis to Portland.
      Alaska Airlines and Southwest Airlines fly direct from St Louis to Portland.
      As of September 2026, there are 11 flights per week flying from St Louis to Portland.
      The cheapest month to fly from St Louis to Portland is usually September.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Portland Airport on Wednesday, 23 September 2026.
      Yes – the average flight time is 4 hours and 14 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Portland but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Portland is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to Portland.

      Travelling from Lambert-St. Louis International Airport (STL) to Portland International Airport (PDX): what you need to know

      • The average duration of a direct flight from Lambert-St. Louis International Airport to Portland International Airport is 4 hours 5 minutes.

      • Portland's timezone is UTC-7, making Portland two hours behind St Louis.

      • Arrive at the airport on time so you don't miss your STL to PDX flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.

      • Travelling during a peak time like July? Public holidays and other popular periods can lead to longer lines at security. Be extra cautious and arrive up to four hours ahead of international flights and two hours before a domestic departure.

      • Flying into Portland (and then seeing more of United States!) is a breeze with Southwest Airlines. This popular carrier offers direct flights from Lambert-St. Louis International Airport to Portland International Airport.

      • The majority of travellers choose to fly with Southwest Airlines on this route.

      • Consider adding a stopover when booking your ticket from Lambert-St. Louis International Airport to Portland International Airport. Simply deselect 'Direct flights only' to break up your trip, or perhaps explore a new destination along the way. Check out these options between STL and PDX:

        • Denver International Airport

        • Minneapolis-St. Paul International Airport

        • Seattle-Tacoma International Airport

      How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Portland International Airport (PDX)

      • The lowest price we've seen for a one-way Lambert-St. Louis International Airport to Portland International Airport flight is ₹ 13,309. A return fare right now is ₹ 25,609. Depending on the availability when you book, these fares can change.

      • To get cheap tickets from STL to PDX, book your trip six months before your departure date.

      • The cheapest month for flights from Lambert-St. Louis International Airport to Portland International Airport is May. Use the 'Whole month' tool to find the lowest airfares if you have flexible dates.

      • You don't need to check back in every day to see if fares have dropped when you set up a Price Alert. We'll let you know the moment there's a better deal on cheap flights from STL to PDX.

      • Tailor your trip with filters. Pick your ideal arrival and departure times, airlines and total journey duration. You can also sort the results by 'Fastest,' 'Cheapest' or 'Best' flights from Lambert-St. Louis International Airport to Portland International Airport.

      Handy information about Lambert-St. Louis International Airport (STL)

      Arriving at Portland International Airport (PDX)

      Getting from Portland International Airport (PDX) to central Portland

      • You'll find PDX at 7000 NE Airport Way.

      • Portland International Airport to the centre of Portland has a drive time of around 20 minutes. It's approximately 19 kilometres away.

      • It'll take around 45 minutes to get there by public transport.

      When to fly to Portland International Airport (PDX)

      • The quietest month for a flight from Lambert-St. Louis International Airport to Portland International Airport is May, while July is the most popular. Pick the ideal time to go to Portland based on whether you prefer a faster pace or a more relaxed vibe.

      • When booking your flight from Lambert-St. Louis International Airport to Portland International Airport, consider the kind of weather you enjoy. August is the warmest month in Portland, with the temperature ranging from 12ºC to 31ºC.

      • December has average temperatures of between 0ºC and 9ºC. Look for cheap tickets from STL to PDX around that time if you like travelling in cooler conditions.

      Explore more of United States

      • You've visited Portland, now it's time to discover other corners of United States. Journey about 241 kilometres north to Seattle to check off its leading attractions. From Greyhound: Bus Station to LMN Architects and Boeing Radiation Effects Lab, your itinerary will be busy.

      • Around 467 kilometres north-east of Portland, Spokane is another favourite stop in United States. Get a taste of what this destination has to offer at Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

      Plan the rest of your trip from St Louis to Portland

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.