Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Allentown to St. Louis from $149

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Allentown to St. Louis departing on 11/4. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Allentown to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:39 am - 1:20 pm
ABE
-
STL
7h 41m
1 stop
Delta Logo
6:00 am - 12:05 pm
STL
-
ABE
5h 05m
1 stop
$297Delta
Thu, Oct 22 - Sat, Oct 24
Delta Logo
6:16 am - 9:54 am
ABE
-
STL
4h 38m
1 stop
Delta Logo
7:00 am - 12:28 pm
STL
-
ABE
4h 28m
1 stop
$297Delta
Wed, Aug 19 - Tue, Aug 25
Delta Logo
6:39 am - 10:51 am
ABE
-
STL
5h 12m
1 stop
Delta Logo
12:00 pm - 5:16 pm
STL
-
ABE
4h 16m
1 stop
$297Delta
Thu, Oct 22 - Sat, Oct 24
Multiple Airlines Logo
7:30 am - 7:17 pm
ABE
-
STL
12h 47m
1 stop
Multiple Airlines Logo
5:19 pm - 9:28 pm
STL
-
ABE
27h 09m
1 stop
$314Multiple Airlines
Fri, Oct 2 - Sun, Oct 4
United Airlines Logo
6:15 am - 10:32 am
ABE
-
STL
5h 17m
1 stop
United Airlines Logo
1:08 pm - 9:02 pm
STL
-
ABE
6h 54m
1 stop
$377United Airlines
Sat, Oct 31 - Tue, Nov 3
Multiple Airlines Logo
3:00 pm - 1:10 pm
ABE
-
STL
23h 10m
2 stops
Multiple Airlines Logo
1:02 pm - 3:38 pm
STL
-
ABE
25h 36m
1 stop
$377Multiple Airlines
Thu, Sep 10 - Sun, Sep 13
American Airlines Logo
6:20 pm - 11:58 pm
ABE
-
STL
6h 38m
1 stop
American Airlines Logo
11:31 am - 5:47 pm
STL
-
ABE
5h 16m
1 stop
$395American Airlines
Mon, Dec 28 - Tue, Jan 5
Multiple Airlines Logo
7:30 am - 7:17 pm
ABE
-
STL
12h 47m
1 stop
Multiple Airlines Logo
10:20 am - 1:14 pm
STL
-
ABE
25h 54m
2 stops
$400Multiple Airlines
Fri, Oct 2 - Sun, Oct 4
United Airlines Logo
5:32 pm - 9:40 pm
ABE
-
STL
5h 08m
1 stop
United Airlines Logo
1:08 pm - 9:02 pm
STL
-
ABE
6h 54m
1 stop
$419United Airlines
Sat, Oct 31 - Wed, Nov 4
American Airlines Logo
9:36 am - 4:20 pm
ABE
-
STL
7h 44m
1 stop
American Airlines Logo
9:32 am - 4:42 pm
STL
-
ABE
6h 10m
1 stop
$495American Airlines
Tue, Sep 1 - Fri, Sep 4

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

American Airlines flights from Allentown to St. Louis

Our best American Airlines deals on Allentown to St. Louis flight tickets
American Airlines
Dec 28
ABE6:20 pmAllentown-Bethlehem
6h 38m
1 stop
STL11:58 pmLambert-St Louis
Jan 5
STL11:31 amLambert-St Louis
5h 16m
1 stop
ABE5:47 pmAllentown-Bethlehem
$395
American Airlines
Sep 1
ABE9:36 amAllentown-Bethlehem
7h 44m
1 stop
STL4:20 pmLambert-St Louis
Sep 4
STL9:32 amLambert-St Louis
6h 10m
1 stop
ABE4:42 pmAllentown-Bethlehem
$495
American Airlines
Aug 11
ABE6:00 amAllentown-Bethlehem
4h 32m
1 stop
STL9:32 amLambert-St Louis
Aug 14
STL9:32 amLambert-St Louis
6h 10m
1 stop
ABE4:42 pmAllentown-Bethlehem
$619

United Airlines flights from Allentown to St. Louis

Our best United Airlines deals on Allentown to St. Louis flight tickets
United Airlines
Aug 8
ABE5:41 pmAllentown-Bethlehem
4h 45m
1 stop
STL9:26 pmLambert-St Louis
Aug 15
STL8:30 amLambert-St Louis
7h 31m
1 stop
ABE5:01 pmAllentown-Bethlehem
$379
United Airlines
Oct 31
ABE5:32 pmAllentown-Bethlehem
5h 08m
1 stop
STL9:40 pmLambert-St Louis
Nov 4
STL1:08 pmLambert-St Louis
6h 54m
1 stop
ABE9:02 pmAllentown-Bethlehem
$419
United Airlines
Oct 31
ABE6:15 amAllentown-Bethlehem
5h 17m
1 stop
STL10:32 amLambert-St Louis
Nov 4
STL9:40 amLambert-St Louis
6h 17m
1 stop
ABE4:57 pmAllentown-Bethlehem
$422

momondo Fare Finder

 
Customize your flight search to find flights from Allentown 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 July 30, 2026.
Use the filters below to find and compare flights from Allentown to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Thu 10/22

6:39 am-1:20 pm

1 stop7h 41m

Lambert-St Louis

Sat 10/24

6:00 am-12:05 pm

1 stop5h 05m

$297
Quickest round-trip

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Wed 8/19

6:16 am-9:54 am

1 stop4h 38m

Lambert-St Louis

Tue 8/25

7:00 am-12:28 pm

1 stop4h 28m

$297

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Thu 10/22

6:39 am-10:51 am

1 stop5h 12m

Lambert-St Louis

Sat 10/24

12:00 pm-5:16 pm

1 stop4h 16m

$297

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Fri 10/2

7:30 am-7:17 pm

1 stop12h 47m

Lambert-St Louis

Sun 10/4

5:19 pm-9:28 pm

1 stop27h 09m

$314

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Sat 10/31

6:15 am-10:32 am

1 stop5h 17m

Lambert-St Louis

Tue 11/3

1:08 pm-9:02 pm

1 stop6h 54m

$377

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Thu 9/10

3:00 pm-1:10 pm

2 stops23h 10m

Lambert-St Louis

Sun 9/13

1:02 pm-3:38 pm

1 stop25h 36m

$377

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Mon 12/28

6:20 pm-11:58 pm

1 stop6h 38m

Lambert-St Louis

Tue 1/5

11:31 am-5:47 pm

1 stop5h 16m

$395

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Fri 10/2

7:30 am-7:17 pm

1 stop12h 47m

Lambert-St Louis

Sun 10/4

10:20 am-1:14 pm

2 stops25h 54m

$400

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Sat 10/31

5:32 pm-9:40 pm

1 stop5h 08m

Lambert-St Louis

Wed 11/4

1:08 pm-9:02 pm

1 stop6h 54m

$419

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Tue 9/1

9:36 am-4:20 pm

1 stop7h 44m

Lambert-St Louis

Fri 9/4

9:32 am-4:42 pm

1 stop6h 10m

$495

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to St. Louis from

How to get the cheapest flight ticket from Allentown 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 typical price of a round-trip flight between Allentown and St. Louis?

Prices are currently low for flights on this route.

Typical prices usually range from $322 to $476.
The lowest price recently found on this route was $297.

What is the cheapest month to fly to St. Louis?

In general, October is the cheapest month to fly from Allentown to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $281. The month of September is another great option to travel to St. Louis, with average flight prices from Allentown averaging around $298.

When to book flights from Allentown to St. Louis

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

Cheap Allentown to St. Louis (ABE to STL) flight deals and tips

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

Fastest flight time

4h 38m

Direct flights

None
The fastest flight from Allentown to St. Louis takes 4h 38m
There are no direct flights from Allentown to St. Louis. There are no popular flight routes from Allentown to St. Louis.
Search flight deals

Frequently asked questions about flying from Allentown to St. Louis

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

    There are 794.2 mi between Allentown-Bethlehem and Lambert-St Louis. In terms of flight time, this usually takes a little over 4h 38m.

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

    Prices for flights from Allentown-Bethlehem Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Allentown-Bethlehem Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Allentown-Bethlehem 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 Allentown-Bethlehem Airport to Lambert-St Louis Airport.

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

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Allentown to St. Louis?

Best airlines flying from Allentown to St. Louis

Compare and see reviews for airlines that fly from Allentown to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $228Free CancellationRating
7.1
11,847 reviews
Search American Airlines flights
DeltaPriceFrom $282Free CancellationRating
7.8
8,496 reviews
Search Delta flights
United AirlinesPriceFrom $312Free CancellationRating
7.4
10,047 reviews
Search United Airlines flights

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
Florissant
Collinsville
O'Fallon
Alton
Fenton
Farmington
Clayton
Wentzville
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Allentown to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to St. Louis from Allentown on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Allentown to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to St. Louis from Allentown are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 8/29
Sat 9/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States