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Cheap flights from Erie to St. Louis from $384

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 9/6. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Erie to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:24 am - 4:20 pmERI  Erie-STL Lambert-St Louis
11h 56m1 stop Chicago O'Hare Intl
American Airlines Logo
5:18 pm - 11:59 pmSTL  Lambert-St Louis-ERI Erie
5h 41m1 stop Chicago O'Hare Intl
$384American Airlines
Sun, Sep 6 - Sat, Sep 12
American Airlines Logo
6:10 am - 4:20 pmERI  Erie-STL Lambert-St Louis
11h 10m2 stops Charlotte Douglas Chicago O'Hare Intl
American Airlines Logo
5:18 pm - 11:59 pmSTL  Lambert-St Louis-ERI Erie
5h 41m1 stop Chicago O'Hare Intl
$390American Airlines
Sun, Sep 6 - Sat, Sep 12
American Airlines Logo
5:24 am - 12:14 amERI  Erie-STL Lambert-St Louis
19h 50m1 stop Chicago O'Hare Intl
American Airlines Logo
5:00 am - 11:59 pmSTL  Lambert-St Louis-ERI Erie
17h 59m1 stop Chicago O'Hare Intl
$405American Airlines
Wed, Sep 2 - Sun, Sep 6
American Airlines Logo
12:49 pm - 9:28 pmERI  Erie-STL Lambert-St Louis
9h 39m2 stops Charlotte Douglas Washington, D.C. Reagan-National
American Airlines Logo
5:00 am - 11:59 pmSTL  Lambert-St Louis-ERI Erie
17h 59m1 stop Chicago O'Hare Intl
$438American Airlines
Wed, Sep 2 - Sun, Sep 6
American Airlines Logo
6:10 am - 4:20 pmERI  Erie-STL Lambert-St Louis
11h 10m2 stops Charlotte Douglas Chicago O'Hare Intl
American Airlines Logo
8:54 am - 10:03 pmSTL  Lambert-St Louis-ERI Erie
12h 09m2 stops New York LaGuardia Charlotte Douglas
$443American Airlines
Sun, Sep 6 - Sat, Sep 12
American Airlines Logo
7:18 am - 4:20 pmERI  Erie-STL Lambert-St Louis
10h 02m2 stops Charlotte Douglas Chicago O'Hare Intl
American Airlines Logo
1:25 pm - 10:48 pmSTL  Lambert-St Louis-ERI Erie
8h 23m2 stops Chicago O'Hare Intl Charlotte Douglas
$614American Airlines
Wed, Sep 2 - Sun, Sep 6
American Airlines Logo
7:18 am - 1:02 pmERI  Erie-STL Lambert-St Louis
6h 44m1 stop Charlotte Douglas
American Airlines Logo
3:25 pm - 10:15 pmSTL  Lambert-St Louis-ERI Erie
5h 50m1 stop Charlotte Douglas
$935American Airlines
Mon, Aug 24 - Wed, Aug 26
American Airlines Logo
5:24 am - 8:24 amERI  Erie-STL Lambert-St Louis
4h 00m1 stop Chicago O'Hare Intl
American Airlines Logo
3:25 pm - 12:24 pmSTL  Lambert-St Louis-ERI Erie
19h 59m1 stop Charlotte Douglas
$938American Airlines
Mon, Aug 24 - Fri, Aug 28
American Airlines Logo
12:49 pm - 11:34 pmERI  Erie-STL Lambert-St Louis
11h 45m2 stops Charlotte Douglas Philadelphia
American Airlines Logo
3:25 pm - 10:15 pmSTL  Lambert-St Louis-ERI Erie
5h 50m1 stop Charlotte Douglas
$941American Airlines
Mon, Aug 24 - Wed, Aug 26
American Airlines Logo
12:49 pm - 11:34 pmERI  Erie-STL Lambert-St Louis
11h 45m2 stops Charlotte Douglas Philadelphia
American Airlines Logo
3:25 pm - 12:24 pmSTL  Lambert-St Louis-ERI Erie
19h 59m1 stop Charlotte Douglas
$944American Airlines
Mon, Aug 24 - Fri, Aug 28

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American Airlines flights from Erie to St. Louis

Our best American Airlines deals on Erie to St. Louis flight tickets
American Airlines
Sep 6
ERI5:24 amErie
11h 56m
1 stop
STL4:20 pmLambert-St Louis
Sep 12
STL5:18 pmLambert-St Louis
5h 41m
1 stop
ERI11:59 pmErie
$384
American Airlines
Sep 6
ERI6:10 amErie
11h 10m
2 stops
STL4:20 pmLambert-St Louis
Sep 12
STL5:18 pmLambert-St Louis
5h 41m
1 stop
ERI11:59 pmErie
$390
American Airlines
Sep 2
ERI5:24 amErie
19h 50m
1 stop
STL12:14 amLambert-St Louis
Sep 6
STL5:00 amLambert-St Louis
17h 59m
1 stop
ERI11:59 pmErie
$405

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 August 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

Cheapest round-trip

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Sun 9/6

5:24 am-4:20 pm

1 stop11h 56m

Lambert-St Louis

Sat 9/12

5:18 pm-11:59 pm

1 stop5h 41m

$384

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Sun 9/6

6:10 am-4:20 pm

2 stops11h 10m

Lambert-St Louis

Sat 9/12

5:18 pm-11:59 pm

1 stop5h 41m

$390

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Wed 9/2

5:24 am-12:14 am

1 stop19h 50m

Lambert-St Louis

Sun 9/6

5:00 am-11:59 pm

1 stop17h 59m

$405

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Wed 9/2

12:49 pm-9:28 pm

2 stops9h 39m

Lambert-St Louis

Sun 9/6

5:00 am-11:59 pm

1 stop17h 59m

$438

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Sun 9/6

6:10 am-4:20 pm

2 stops11h 10m

Lambert-St Louis

Sat 9/12

8:54 am-10:03 pm

2 stops12h 09m

$443

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Wed 9/2

7:18 am-4:20 pm

2 stops10h 02m

Lambert-St Louis

Sun 9/6

1:25 pm-10:48 pm

2 stops8h 23m

$614
Quickest round-trip

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Mon 8/24

7:18 am-1:02 pm

1 stop6h 44m

Lambert-St Louis

Wed 8/26

3:25 pm-10:15 pm

1 stop5h 50m

$935

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Mon 8/24

5:24 am-8:24 am

1 stop4h 00m

Lambert-St Louis

Fri 8/28

3:25 pm-12:24 pm

1 stop19h 59m

$938

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Mon 8/24

12:49 pm-11:34 pm

2 stops11h 45m

Lambert-St Louis

Wed 8/26

3:25 pm-10:15 pm

1 stop5h 50m

$941

ErieSt. Louis

ERI Erie - STL Lambert-St Louis

ERISTL

Erie

Mon 8/24

12:49 pm-11:34 pm

2 stops11h 45m

Lambert-St Louis

Fri 8/28

3:25 pm-12:24 pm

1 stop19h 59m

$944

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 airlines fly to St. Louis?

Delta, Southwest and American Airlines 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 40% 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

4h 00m

Direct flights

None
The fastest flight from Erie to St. Louis takes 4h 00m
There are no direct flights from Erie to St. Louis. There are no popular flight routes from Erie to St. Louis.
Search flight deals

Frequently asked questions about flying from Erie to St. Louis

  • 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 4h 00m.

  • 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
Fairview Heights
Hermann
St. Peters
Maryland Heights
Collinsville
Florissant
Alton
O'Fallon
Farmington
Clayton
Fenton
Festus
Wentzville
Eureka
Edwardsville
Litchfield
Grafton
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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