$313 Cheap Flights from St. Louis (STL) to Pendleton (PDT)

View $313 flight on Fri, Oct 3, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Pendleton, OR (PDT-Eastern Oregon Regional)

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Cheap Flights from St. Louis to Pendleton (STL-PDT)

Prices were available within the past 7 days and start at $313 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Eastern Oregon Regional Airport (PDT) cost?
Snag a cheap one-way flight from $313 or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Eastern Oregon Regional Airport (PDT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Eastern Oregon Regional Airport (PDT)?
Planning your trip for is a great way to save, as it's the cheapest month for flights between STL and PDT. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Eastern Oregon Regional Airport (PDT)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from STL to PDT. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Eastern Oregon Regional Airport (PDT)?
There are no daily nonstop flights departing from Lambert-St. Louis Intl. Airport (STL) to Eastern Oregon Regional Airport (PDT). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from STL to PDT?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a range of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Eastern Oregon Regional Airport (PDT)?
To reach Eastern Oregon Regional Airport (PDT) on schedule, pick a flight that takes off from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood 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 Lambert-St. Louis Intl. Airport (STL) to Eastern Oregon Regional Airport (PDT) last-minute?
Booking your flight from STL to PDT shortly before your getaway is generally more expensive. However, if you're flexible with your travel times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a STL to PDT flight and hotel package?
You can save money by securing a STL to PDT flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've chosen your ideal flights and accommodations, you can add extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Eastern Oregon Regional Airport (PDT)?
Typically, you're able to reschedule or cancel your STL to PDT flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you need more information, visit our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Eastern Oregon Regional
Distance
1524 mi

Book with confidence

Book with confidence

St. Louis to Pendleton Flights

The cheapest times to fly from St. Louis to Pendleton

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 Pendleton are during the month of . You can find some of the cheapest flights from St. Louis to Pendleton with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Pendleton: 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 Pendleton

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 Pendleton in 2025. You can also book with separate airlines for your outbound and return journeys, from $313 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 Pendleton 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 Pendleton 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.

 

St. Louis to Pendleton Flights

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