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

Popular airlines from Portland Intl. Jetport Airport (PWM) to St. Louis, MO (SUS-Spirit of St. Louis)

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Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $487
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $487

Frequently asked questions

How much does a flight from Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS) cost?
Get a cheap one-way flight or cheap return flight from Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS)?
is the most affordable month to fly from PWM to SUS. Traveling during an off-peak travel window is often the key to landing a great deal.
What is the cheapest airline that flies from Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS)?
To find the cheapest airline flying from PWM to SUS, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS)?
Nonstop flights from Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PWM to SUS?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS)?
To avoid possible delays on the Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS) route, aim to travel before 3 PM. Later departures are 22% more likely to be canceled.**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 Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS) last-minute?
Holding off until right before your break to book your flight from PWM to SUS generally means paying more. While it's possible to find some last-minute discounts, they're not always guaranteed. Allow some flexibility in your schedule for a better chance of landing a bargain.
Is it cheaper to book a PWM to SUS flight and hotel package?
You'll typically save money by securing a PWM to SUS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've chosen your ideal flights and accommodations, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Portland Intl. Jetport Airport (PWM) to Spirit of St. Louis Airport (SUS)?
Typically, you can cancel or reschedule your PWM to SUS flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you need further information, head to our Customer Service portal.

Travel information

Origin airport
Portland Intl. Jetport
Destination airport
Spirit of St. Louis
Distance
1109 mi

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Portland to St. Louis Flights

The cheapest times to fly from Portland to St. Louis

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

 

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

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

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 Portland to St. Louis 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 Portland to St. Louis 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 Portland to St. Louis 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.

 

Portland to St. Louis Flights

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