$84 Cheap Flights from St. Louis to Portland

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Lambert-St. Louis Intl. to Portland Intl.

Amazing STL to PDX Flight Deals

The cheapest flights to Portland Intl. found within the past 7 days were $182 round trip and $84 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from Lambert Field to PDX right now?
For any present PDX travel advice and quarantine requirements, visit our Covid-19 Travel Advisor. Look before you book your flight, so you don’t get caught up.
Are there direct flights from Lambert Field to PDX?
For the fastest trip between St. Louis and Portland, look up Southwest Airlines. They advertise direct flights from Lambert-St. Louis Intl. Airport (STL) to PDX.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Portland Intl. Airport (PDX), please visit our Customer Service Portal.
How long is the flight from St. Louis Lambert International Airport to Portland Airport?
If you’re flying from St. Louis to Portland, you can expect the journey to take an average of 6 hours. If this sounds like more time than you’d hoped, why not put it to good use? Read up on your destination, organize some last-minute details and have a decent rest before the adventure begins.
What is the flight distance from Lambert-St. Louis Intl. Airport (STL) to PDX Airport?
With a flight distance of 1,700 mi between Lambert-St. Louis Intl. Airport (STL) and PDX, you’ll be in your seat for a while. It’s the perfect opportunity to get engrossed in a film, get some work done or just unwind with a magazine.
What airlines fly from Lambert Field to Portland Intl. Airport (PDX)?
Many seasoned wanderers choose to travel with Southwest Airlines from St. Louis to Portland. This leading air carrier not only offers up to 30 flights per month, it also flies direct.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Alaska Airlines, Delta or United Airlines you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From Lambert-St. Louis Intl.
Traveling To Portland Intl.
Shortest Flight Time hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price $182

Route Info

Flight path for flights from Lambert-St. Louis International Airport to Portland International Airport

2,175.00 miles

Airlines & Aircraft Used on STL to PDX Flight Routes

Airline Carrier
American Airlines
Airbus A320-100/200
American Airlines
Boeing 767 all pax models

Discover our best flights from St. Louis STL to Portland PDX. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from St. Louis STL to Portland PDX at the right price  

Airfares to Portland PDX from St. Louis STL currently cost between $182 and $308. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from St. Louis STL to Portland PDX 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from St. Louis STL to Portland PDX on Travelocity starting at $84. Prices and availability subject to change. Additional terms may apply. 


Get to Portland PDX from St. Louis STL quicker with direct flights. 

Get to Portland faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to PDX from STL to take around hour(s) min(s).  


Find our cheapest airfares for flights from St. Louis STL to Portland PDX

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to PDX from STL. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from St. Louis STL to Portland PDX today 

If you’re flexible about when you travel, October is usually the cheapest month to fly from St. Louis STL to Portland PDX. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to Portland PDX from St. Louis STL 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to PDX from STL have this option.  


Travel with confidence when you book flights to Portland PDX from St. Louis STL with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.