Cheap Flights from St. Louis (SUS) to Portland (PDX)

Popular airlines from St. Louis, MO (SUS-Spirit of St. Louis) to Portland International Airport (PDX)

Flights from St. Louis (SUS) to Portland (PDX)
Origin airport
Spirit of St. Louis
Destination airport
Portland Intl.
Distance
1692 mi

St. Louis to Portland Flights

The cheapest times to fly from St. Louis to Portland

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Portland are during the month of . You can find some of the cheapest flights from St. Louis to Portland with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Portland

Sunday is one of the best days to book for cheap flights from St. Louis to Portland: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Portland

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Portland flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Portland airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Spirit of St. Louis Airport (SUS) to Portland Intl. Airport (PDX) cost?
Lock in a cheap one-way flight or cheap return flight from Spirit of St. Louis Airport (SUS) to Portland Intl. Airport (PDX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Spirit of St. Louis Airport (SUS) to Portland Intl. Airport (PDX)?
The cheapest month to fly from SUS to PDX is , when demand is low. Off-peak season is typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Spirit of St. Louis Airport (SUS) to Portland Intl. Airport (PDX)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest SUS to PDX flight.
How many flights per day from Spirit of St. Louis Airport (SUS) to Portland Intl. Airport (PDX)?
You'll need to take a flight with a layover when traveling from Spirit of St. Louis Airport (SUS) to Portland Intl. Airport (PDX). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from SUS to PDX?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Spirit of St. Louis Airport (SUS) to Portland Intl. Airport (PDX)?
To touch down at Portland Intl. Airport (PDX) without delays, book a flight that leaves from Spirit of St. Louis Airport (SUS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Spirit of St. Louis Airport (SUS) to Portland Intl. Airport (PDX) last-minute?
Holding off until just before your trip to book a ticket from SUS to PDX generally means paying more. While you may come across some last-minute discounts, there's no guarantee. Keep your travel schedule open to boost your chances of snagging a bargain.
Is it cheaper to book a SUS to PDX flight and hotel package?
You'll generally save money by booking a SUS to PDX flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've selected your preferred accommodations and flights, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Spirit of St. Louis Airport (SUS) to Portland Intl. Airport (PDX)?
In most cases, you can reschedule or cancel your SUS to PDX flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you want more information, visit our Customer Service portal.

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*Available to One Key members.