$344 Cheap Flights from St. Louis (STL) to Erie (ERI)

View $344 flight on Wed, Dec 24, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Erie, PA (ERI-Erie Intl.)

Cheap Flights from St. Louis to Erie (STL-ERI)

Prices were available within the past 7 days and start at $344 for one-way flights and $429 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Dec 4 - Sat, Dec 6
STL
St. Louis
ERI
Erie
$429 Roundtrip, found 3 days ago
$429
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Dec 4 from St. Louis to Erie, returning Sat, Dec 6, priced at $429 found 3 days ago
American Airlines
Thu, Dec 4 - Sat, Dec 6
STL
St. Louis
ERI
Erie
$435 Roundtrip, found 3 days ago
$435
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Dec 4 from St. Louis to Erie, returning Sat, Dec 6, priced at $435 found 3 days ago
American Airlines
Thu, Dec 4 - Sat, Dec 6
STL
St. Louis
ERI
Erie
$456 Roundtrip, found 3 days ago
$456
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Dec 4 from St. Louis to Erie, returning Sat, Dec 6, priced at $456 found 3 days ago
American Airlines
Thu, Dec 4 - Sat, Dec 6
STL
St. Louis
ERI
Erie
$462 Roundtrip, found 3 days ago
$462
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Dec 4 from St. Louis to Erie, returning Sat, Dec 6, priced at $462 found 3 days ago
American Airlines
Wed, Dec 3 - Sat, Dec 13
STL
St. Louis
ERI
Erie
$472 Roundtrip, found 3 days ago
$472
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Dec 3 from St. Louis to Erie, returning Sat, Dec 13, priced at $472 found 3 days ago
American Airlines
Thu, Nov 20 - Sat, Nov 22
STL
St. Louis
ERI
Erie
$474 Roundtrip, found 3 days ago
$474
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Nov 20 from St. Louis to Erie, returning Sat, Nov 22, priced at $474 found 3 days ago
American Airlines
Thu, Nov 20 - Sat, Nov 22
STL
St. Louis
ERI
Erie
$480 Roundtrip, found 3 days ago
$480
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Nov 20 from St. Louis to Erie, returning Sat, Nov 22, priced at $480 found 3 days ago
American Airlines
Wed, Dec 3 - Sun, Dec 14
STL
St. Louis
ERI
Erie
$499 Roundtrip, found 3 days ago
$499
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Dec 3 from St. Louis to Erie, returning Sun, Dec 14, priced at $499 found 3 days ago
American Airlines
Thu, Dec 4 - Sat, Dec 6
STL
St. Louis
ERI
Erie
$501 Roundtrip, found 3 days ago
$501
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Dec 4 from St. Louis to Erie, returning Sat, Dec 6, priced at $501 found 3 days ago
American Airlines
Thu, Nov 13 - Sat, Nov 15
STL
St. Louis
ERI
Erie
$504 Roundtrip, found 3 days ago
$504
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Nov 13 from St. Louis to Erie, returning Sat, Nov 15, priced at $504 found 3 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Erie Intl. Airport (ERI) cost?
Get a cheap one-way flight from $344 or cheap return flight from $429 from Lambert-St. Louis Intl. Airport (STL) to Erie Intl. Airport (ERI) 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 Erie Intl. Airport (ERI)?
Planning your trip for December is a good way to save, as it's the cheapest month for flights between STL and ERI. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Erie Intl. Airport (ERI)?
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 see which carrier offers the cheapest STL to ERI flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Erie Intl. Airport (ERI)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Erie Intl. Airport (ERI) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to ERI?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*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 Erie Intl. Airport (ERI)?
To land at Erie Intl. Airport (ERI) without delays, pick a flight that leaves Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Erie Intl. Airport (ERI) last-minute?
Waiting until right before your break to book a flight from STL to ERI often results in higher prices. Although you may find some last-minute deals, there's no guarantee. Keep your travel schedule open to maximize your chances of landing a bargain.
Is it cheaper to book a STL to ERI flight and hotel package?
Opting for a STL to ERI flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Pick from our impressive range of stays and then add car rentals, activities and flights to your booking. Bundle everything 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 Erie Intl. Airport (ERI)?
In most cases, you can modify or cancel your STL to ERI flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like further information, go to our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Erie Intl.
Roundtrip price
$429
Distance
582 mi

Book with confidence

St. Louis to Erie Flights

The cheapest times to fly from St. Louis to Erie

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

 

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

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

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 Erie in 2025. You can also book with separate airlines for your outbound and return journeys, from $344 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 Erie 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 Erie 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 Erie Flights

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*Available to One Key members.