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Cheap flights from Erie to St. Louis from $437

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Erie to St. Louis departing on 4/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:41 am - 6:04 pm
ERI
-
STL
7h 23m
1 stop
American Airlines Logo
6:05 am - 5:04 pm
STL
-
ERI
9h 59m
2 stops
$437American Airlines
Fri, Apr 10 - Wed, Apr 15
American Airlines Logo
6:05 am - 5:22 pm
ERI
-
STL
12h 17m
2 stops
American Airlines Logo
6:29 am - 5:04 pm
STL
-
ERI
9h 35m
2 stops
$512American Airlines
Fri, Apr 10 - Wed, Apr 15
American Airlines Logo
11:47 am - 11:48 pm
ERI
-
STL
13h 01m
2 stops
American Airlines Logo
6:06 am - 5:08 pm
STL
-
ERI
10h 02m
2 stops
$543American Airlines
Thu, Mar 5 - Sat, Mar 7
American Airlines Logo
11:41 am - 6:04 pm
ERI
-
STL
7h 23m
1 stop
American Airlines Logo
2:12 pm - 10:37 pm
STL
-
ERI
7h 25m
1 stop
$556American Airlines
Fri, Apr 10 - Wed, Apr 15
American Airlines Logo
6:00 am - 12:43 pm
ERI
-
STL
7h 43m
1 stop
American Airlines Logo
6:06 am - 5:08 pm
STL
-
ERI
10h 02m
2 stops
$572American Airlines
Thu, Mar 5 - Sat, Mar 7
American Airlines Logo
11:41 am - 6:04 pm
ERI
-
STL
7h 23m
1 stop
American Airlines Logo
2:12 pm - 10:37 pm
STL
-
ERI
7h 25m
1 stop
$582American Airlines
Fri, Apr 10 - Thu, Apr 16
American Airlines Logo
6:05 am - 5:22 pm
ERI
-
STL
12h 17m
2 stops
American Airlines Logo
2:12 pm - 10:37 pm
STL
-
ERI
7h 25m
1 stop
$588American Airlines
Fri, Apr 10 - Thu, Apr 16
American Airlines Logo
11:47 am - 10:52 pm
ERI
-
STL
12h 05m
2 stops
American Airlines Logo
2:06 pm - 9:37 pm
STL
-
ERI
6h 31m
1 stop
$606American Airlines
Fri, Feb 27 - Tue, Mar 3
American Airlines Logo
11:47 am - 10:52 pm
ERI
-
STL
12h 05m
2 stops
American Airlines Logo
6:00 am - 4:15 pm
STL
-
ERI
9h 15m
2 stops
$611American Airlines
Fri, Feb 27 - Tue, Mar 3
American Airlines Logo
6:00 am - 12:43 pm
ERI
-
STL
7h 43m
1 stop
American Airlines Logo
9:15 am - 5:08 pm
STL
-
ERI
6h 53m
1 stop
$629American Airlines
Thu, Mar 5 - Sat, Mar 7

American Airlines flights from Erie to St. Louis

Our best American Airlines deals on Erie to St. Louis flight tickets
American Airlines
Apr 10
ERI11:41 amErie
7h 23m
1 stop
STL6:04 pmLambert-St Louis
Apr 15
STL6:05 amLambert-St Louis
9h 59m
2 stops
ERI5:04 pmErie
$437
American Airlines
Apr 10
ERI6:05 amErie
12h 17m
2 stops
STL5:22 pmLambert-St Louis
Apr 15
STL6:29 amLambert-St Louis
9h 35m
2 stops
ERI5:04 pmErie
$512
American Airlines
Mar 5
ERI11:47 amErie
13h 01m
2 stops
STL11:48 pmLambert-St Louis
Mar 7
STL6:06 amLambert-St Louis
10h 02m
2 stops
ERI5:08 pmErie
$543

momondo 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, momondo users made 832,500 searches. Data last updated February 14, 2026.
Use the filters below to find and compare flights from Erie to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ErieSt. Louis

ERI - STL

ERISTL

Erie

Fri 4/10

11:41 am-6:04 pm

1 stop7h 23m

Lambert-St Louis

Wed 4/15

6:05 am-5:04 pm

2 stops9h 59m

$437

ErieSt. Louis

ERI - STL

ERISTL

Erie

Fri 4/10

6:05 am-5:22 pm

2 stops12h 17m

Lambert-St Louis

Wed 4/15

6:29 am-5:04 pm

2 stops9h 35m

$512

ErieSt. Louis

ERI - STL

ERISTL

Erie

Thu 3/5

11:47 am-11:48 pm

2 stops13h 01m

Lambert-St Louis

Sat 3/7

6:06 am-5:08 pm

2 stops10h 02m

$543

ErieSt. Louis

ERI - STL

ERISTL

Erie

Fri 4/10

11:41 am-6:04 pm

1 stop7h 23m

Lambert-St Louis

Wed 4/15

2:12 pm-10:37 pm

1 stop7h 25m

$556

ErieSt. Louis

ERI - STL

ERISTL

Erie

Thu 3/5

6:00 am-12:43 pm

1 stop7h 43m

Lambert-St Louis

Sat 3/7

6:06 am-5:08 pm

2 stops10h 02m

$572

ErieSt. Louis

ERI - STL

ERISTL

Erie

Fri 4/10

11:41 am-6:04 pm

1 stop7h 23m

Lambert-St Louis

Thu 4/16

2:12 pm-10:37 pm

1 stop7h 25m

$582

ErieSt. Louis

ERI - STL

ERISTL

Erie

Fri 4/10

6:05 am-5:22 pm

2 stops12h 17m

Lambert-St Louis

Thu 4/16

2:12 pm-10:37 pm

1 stop7h 25m

$588

ErieSt. Louis

ERI - STL

ERISTL

Erie

Fri 2/27

11:47 am-10:52 pm

2 stops12h 05m

Lambert-St Louis

Tue 3/3

2:06 pm-9:37 pm

1 stop6h 31m

$606

ErieSt. Louis

ERI - STL

ERISTL

Erie

Fri 2/27

11:47 am-10:52 pm

2 stops12h 05m

Lambert-St Louis

Tue 3/3

6:00 am-4:15 pm

2 stops9h 15m

$611

ErieSt. Louis

ERI - STL

ERISTL

Erie

Thu 3/5

6:00 am-12:43 pm

1 stop7h 43m

Lambert-St Louis

Sat 3/7

9:15 am-5:08 pm

1 stop6h 53m

$629

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Erie to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Erie to Lambert-St Louis?

American Airlines is the most popular carrier operating from Erie to Lambert-St Louis

What airlines fly to St. Louis?

Delta, American Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Erie according to our data. Delta is the first choice among our users, with 43% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When to book flights from Erie to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Erie to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Erie to St. Louis (ERI to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Erie to St. Louis

Fastest flight time

7h 20m

Direct flights

None
The fastest flight from Erie to St. Louis takes 7h 20m
There are no direct flights from Erie to St. Louis. There are no popular flight routes from Erie to St. Louis.
Search flight deals

  • How far is Erie to Lambert-St Louis by plane?

    The straight-line distance from Erie to Lambert-St Louis is 583.8 mi. A reasonable flight in good conditions will take 7h 20m.

  • When did momondo last update prices for flights from Erie Airport to Lambert-St Louis Airport?

    Prices for flights from Erie Airport to Lambert-St Louis Airport were last updated today.

  • How old do you have to be to fly from Erie Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Erie Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Erie to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Erie to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Erie to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Erie to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Erie to St. Louis?

Once all potential Erie to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Erie to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Erie and alert you when they change.

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