$338 Cheap Flights from St. Louis (STL) to Altoona (AOO)

View $338 flight on Sat, Dec 6, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Altoona, PA (AOO-Blair County)

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Cheap Flights from St. Louis to Altoona (STL-AOO)

Prices were available within the past 7 days and start at $338 for one-way flights and $429 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 15 - Sat, Nov 1
STL
St. Louis
AOO
Altoona
$429 Roundtrip, found 1 day ago
$429
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 15 from St. Louis to Altoona, returning Sat, Nov 1, priced at $429 found 1 day ago
United
Sat, Oct 11 - Wed, Oct 22
STL
St. Louis
AOO
Altoona
$439 Roundtrip, found 1 day ago
$439
Roundtrip
found 1 day ago
Select United flight, departing Sat, Oct 11 from St. Louis to Altoona, returning Wed, Oct 22, priced at $439 found 1 day ago
American Airlines
Sat, Oct 4 - Sat, Oct 11
STL
St. Louis
AOO
Altoona
$446 Roundtrip, found 3 hours ago
$446
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Oct 4 from St. Louis to Altoona, returning Sat, Oct 11, priced at $446 found 3 hours ago
United
Wed, Oct 15 - Thu, Oct 23
STL
St. Louis
AOO
Altoona
$449 Roundtrip, found 1 day ago
$449
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 15 from St. Louis to Altoona, returning Thu, Oct 23, priced at $449 found 1 day ago
American Airlines
Sat, Oct 4 - Sat, Oct 11
STL
St. Louis
AOO
Altoona
$454 Roundtrip, found 3 hours ago
$454
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Oct 4 from St. Louis to Altoona, returning Sat, Oct 11, priced at $454 found 3 hours ago
United
Sat, Oct 11 - Thu, Oct 23
STL
St. Louis
AOO
Altoona
$459 Roundtrip, found 1 day ago
$459
Roundtrip
found 1 day ago
Select United flight, departing Sat, Oct 11 from St. Louis to Altoona, returning Thu, Oct 23, priced at $459 found 1 day ago
United
Wed, Oct 15 - Fri, Oct 24
STL
St. Louis
AOO
Altoona
$463 Roundtrip, found 1 day ago
$463
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 15 from St. Louis to Altoona, returning Fri, Oct 24, priced at $463 found 1 day ago
United
Sat, Oct 4 - Tue, Oct 7
STL
St. Louis
AOO
Altoona
$469 Roundtrip, found 6 days ago
$469
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 4 from St. Louis to Altoona, returning Tue, Oct 7, priced at $469 found 6 days ago
United
Wed, Oct 15 - Fri, Oct 17
STL
St. Louis
AOO
Altoona
$473 Roundtrip, found 1 day ago
$473
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 15 from St. Louis to Altoona, returning Fri, Oct 17, priced at $473 found 1 day ago
United
Sat, Oct 4 - Sat, Oct 18
STL
St. Louis
AOO
Altoona
$479 Roundtrip, found 1 day ago
$479
Roundtrip
found 1 day ago
Select United flight, departing Sat, Oct 4 from St. Louis to Altoona, returning Sat, Oct 18, priced at $479 found 1 day ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Blair County Airport (AOO) cost?
Lock in a cheap one-way flight from $338 or cheap return flight from $429 from Lambert-St. Louis Intl. Airport (STL) to Blair County Airport (AOO) 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 Lambert-St. Louis Intl. Airport (STL) to Blair County Airport (AOO)?
Planning your trip for October may help you find better deals, as it's the cheapest month for flights between STL and AOO. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Blair County Airport (AOO)?
To find the cheapest airline flying from STL to AOO, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Blair County Airport (AOO)?
There aren't any daily direct flights available from Lambert-St. Louis Intl. Airport (STL) to Blair County Airport (AOO). 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 AOO?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a range of factors, such as the airline and season.*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 Blair County Airport (AOO)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Blair County Airport (AOO) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this are on average 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 Lambert-St. Louis Intl. Airport (STL) to Blair County Airport (AOO) last-minute?
Waiting until just before your departure to book a flight from STL to AOO generally means paying more. While you might find some last-minute deals, they aren't always guaranteed. Allow some flexibility in your schedule for the best chance of landing a bargain.
Is it cheaper to book a STL to AOO flight and hotel package?
Booking a STL to AOO flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Blair County Airport (AOO)?
In most instances, you can reschedule or cancel your STL to AOO flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like more details, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Blair County
Roundtrip price
$429
Distance
650 mi

Book with confidence

Book with confidence

St. Louis to Altoona Flights

The cheapest times to fly from St. Louis to Altoona

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

 

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

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

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 Altoona in 2025. You can also book with separate airlines for your outbound and return journeys, from $338 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 Altoona 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 Altoona 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 Altoona Flights

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*Available to One Key members.