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$500+ Cheap flights from Erie to St. Louis (ERI - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ERI — STL
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap flight deals from Erie to St. Louis

Cheapest flights from Erie to St. Louis
Explore the most affordable flight options available from Erie to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 5, 2026.

This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:11 pm
ERI
-
STL
1 stop7h 41m
American Airlines
Wed 3/118:00 am
STL
-
ERI
2 stops13h 40m
American Airlines
Deal found 2/2$500
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:00 am
ERI
-
STL
1 stop7h 43m
American Airlines
Sat 3/146:14 am
STL
-
ERI
2 stops9h 54m
American Airlines
Deal found 2/2$560
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/75:49 pm
ERI
-
STL
1 stop6h 37m
American Airlines
Mon 2/93:54 pm
STL
-
ERI
1 stop5h 49m
American Airlines
Deal found 2/3$579
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:00 am
ERI
-
STL
1 stop7h 43m
American Airlines
Sat 3/76:36 pm
STL
-
ERI
2 stops14h 44m
American Airlines
Deal found 2/3$594

Find flight deals from Erie to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Erie (ERI) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$500
(American Airlines)
Provider with most accurate pricing for Erie-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Erie-Lambert-St Louis flights.
Search Deals
From Erie to Lambert-St Louis
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Erie to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 5, 2026.
Use the filters below to find and compare flights from Erie to St. Louis that are best for you.

Fly from

Erie

Fly to

St. Louis

Route

Depart

Return

Price

ErieSt. Louis

ERI - STL

ERISTL

Erie

Wed 3/4

12:11 pm-6:52 pm

1 stop7h 41m

Lambert-St Louis

Wed 3/11

8:00 am-10:40 pm

2 stops13h 40m

$500

ErieSt. Louis

ERI - STL

ERISTL

Erie

Wed 3/11

6:00 am-12:43 pm

1 stop7h 43m

Lambert-St Louis

Sat 3/14

6:14 am-5:08 pm

2 stops9h 54m

$560

ErieSt. Louis

ERI - STL

ERISTL

Erie

Thu 3/5

6:00 am-12:43 pm

1 stop7h 43m

Lambert-St Louis

Sat 3/7

6:36 pm-10:20 am

2 stops14h 44m

$594

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Compare providers for flights from Erie to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Erie to St. Louis in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Erie-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Erie-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Erie-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Erie-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Erie-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Erie to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Erie with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Erie to St. Louis

What is the cheapest month to book a flight from Erie to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Erie to St. Louis (average of $112). Flying from Erie to St. Louis in February is currently the most expensive (average of $308). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Erie to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Erie to St. Louis?

    Airlines like American Airlines fly from Erie to St. Louis in about 7h 41m. The time it takes to get you to your destination can typically vary by up to . The distance from Erie to St. Louis is about 583 mi.

  • Can I find deals for flights from Erie to St. Louis that include hotel bookings?

    Yes. In addition to deals on Erie to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Erie to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Erie to St. Louis.

  • Can I find deals for business class flights from Erie to St. Louis?

    Yes. Cheapflights offers flight deals from Erie to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Erie to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Erie to St. Louis (average of $112). Flying from Erie to St. Louis in February is currently the most expensive (average of $308). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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