Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Allentown to St. Louis from $170

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 4/13. 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.

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

Find the cheapest flights from Allentown to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:00 pm - 7:12 pm
ABE
-
STL
7h 12m
1 stop
Delta Logo
3:42 pm - 10:56 pm
STL
-
ABE
6h 14m
1 stop
$313Delta
Sat, Jun 27 - Fri, Jul 3
Delta Logo
5:59 pm - 11:36 pm
ABE
-
STL
6h 37m
1 stop
Delta Logo
6:00 am - 12:12 pm
STL
-
ABE
5h 12m
1 stop
$333Delta
Tue, Apr 28 - Tue, May 5
Delta Logo
1:00 pm - 7:12 pm
ABE
-
STL
7h 12m
1 stop
Delta Logo
6:00 am - 12:10 pm
STL
-
ABE
5h 10m
1 stop
$335Delta
Sat, Jun 27 - Fri, Jul 3
Delta Logo
6:30 am - 12:54 pm
ABE
-
STL
7h 24m
1 stop
Delta Logo
3:42 pm - 10:56 pm
STL
-
ABE
6h 14m
1 stop
$355Delta
Thu, Jun 18 - Mon, Jun 29
Delta Logo
5:59 pm - 11:36 pm
ABE
-
STL
6h 37m
1 stop
Delta Logo
6:00 am - 12:12 pm
STL
-
ABE
5h 12m
1 stop
$366Delta
Mon, Apr 27 - Tue, May 5
United Airlines Logo
5:45 pm - 9:52 pm
ABE
-
STL
5h 07m
1 stop
United Airlines Logo
7:45 am - 1:38 pm
STL
-
ABE
4h 53m
1 stop
$379United Airlines
Sat, Apr 25 - Wed, May 6
United Airlines Logo
5:45 pm - 9:52 pm
ABE
-
STL
5h 07m
1 stop
United Airlines Logo
7:45 am - 1:38 pm
STL
-
ABE
4h 53m
1 stop
$384United Airlines
Sat, Apr 25 - Sun, May 3
Delta Logo
1:00 pm - 7:12 pm
ABE
-
STL
7h 12m
1 stop
Delta Logo
3:42 pm - 10:56 pm
STL
-
ABE
6h 14m
1 stop
$387Delta
Sat, Jun 20 - Tue, Jun 30
Delta Logo
5:59 pm - 11:36 pm
ABE
-
STL
6h 37m
1 stop
Delta Logo
5:00 pm - 11:00 pm
STL
-
ABE
5h 00m
1 stop
$388Delta
Fri, Apr 24 - Sat, May 2
Multiple Airlines Logo
3:25 pm - 12:21 am
ABE
-
STL
9h 56m
1 stop
Multiple Airlines Logo
4:19 pm - 12:11 pm
STL
-
ABE
18h 52m
1 stop
$399Multiple Airlines
Mon, May 11 - Sat, May 16

Delta flights from Allentown to St. Louis

Our best Delta deals on Allentown to St. Louis flight tickets
Delta
Apr 28
ABE5:59 pmAllentown-Bethlehem
6h 37m
1 stop
STL11:36 pmLambert-St Louis
May 5
STL6:00 amLambert-St Louis
5h 12m
1 stop
ABE12:12 pmAllentown-Bethlehem
$333
Delta
Jun 27
ABE1:00 pmAllentown-Bethlehem
7h 12m
1 stop
STL7:12 pmLambert-St Louis
Jul 3
STL6:00 amLambert-St Louis
5h 10m
1 stop
ABE12:10 pmAllentown-Bethlehem
$335
Delta
Jun 18
ABE6:30 amAllentown-Bethlehem
7h 24m
1 stop
STL12:54 pmLambert-St Louis
Jun 29
STL3:42 pmLambert-St Louis
6h 14m
1 stop
ABE10:56 pmAllentown-Bethlehem
$355

American Airlines flights from Allentown to St. Louis

Our best American Airlines deals on Allentown to St. Louis flight tickets
American Airlines
Apr 2
ABE6:04 amAllentown-Bethlehem
7h 39m
1 stop
STL12:43 pmLambert-St Louis
Apr 2
STL6:57 pmLambert-St Louis
4h 32m
1 stop
ABE12:29 amAllentown-Bethlehem
$419
American Airlines
Apr 29
ABE12:00 pmAllentown-Bethlehem
7h 04m
1 stop
STL6:04 pmLambert-St Louis
May 4
STL6:55 pmLambert-St Louis
4h 27m
1 stop
ABE12:22 amAllentown-Bethlehem
$424
American Airlines
May 16
ABE12:00 pmAllentown-Bethlehem
6h 49m
1 stop
STL5:49 pmLambert-St Louis
May 18
STL6:54 pmLambert-St Louis
4h 28m
1 stop
ABE12:22 amAllentown-Bethlehem
$427

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 March 14, 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

Sat 6/27

1:00 pm-7:12 pm

1 stop7h 12m

Lambert-St Louis

Fri 7/3

3:42 pm-10:56 pm

1 stop6h 14m

$313

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Tue 4/28

5:59 pm-11:36 pm

1 stop6h 37m

Lambert-St Louis

Tue 5/5

6:00 am-12:12 pm

1 stop5h 12m

$333

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Sat 6/27

1:00 pm-7:12 pm

1 stop7h 12m

Lambert-St Louis

Fri 7/3

6:00 am-12:10 pm

1 stop5h 10m

$335

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Thu 6/18

6:30 am-12:54 pm

1 stop7h 24m

Lambert-St Louis

Mon 6/29

3:42 pm-10:56 pm

1 stop6h 14m

$355

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Mon 4/27

5:59 pm-11:36 pm

1 stop6h 37m

Lambert-St Louis

Tue 5/5

6:00 am-12:12 pm

1 stop5h 12m

$366
Quickest round-trip

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Sat 4/25

5:45 pm-9:52 pm

1 stop5h 07m

Lambert-St Louis

Wed 5/6

7:45 am-1:38 pm

1 stop4h 53m

$379

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Sat 4/25

5:45 pm-9:52 pm

1 stop5h 07m

Lambert-St Louis

Sun 5/3

7:45 am-1:38 pm

1 stop4h 53m

$384

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Sat 6/20

1:00 pm-7:12 pm

1 stop7h 12m

Lambert-St Louis

Tue 6/30

3:42 pm-10:56 pm

1 stop6h 14m

$387

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Fri 4/24

5:59 pm-11:36 pm

1 stop6h 37m

Lambert-St Louis

Sat 5/2

5:00 pm-11:00 pm

1 stop5h 00m

$388

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Mon 5/11

3:25 pm-12:21 am

1 stop9h 56m

Lambert-St Louis

Sat 5/16

4:19 pm-12:11 pm

1 stop18h 52m

$399

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 cheapest month to fly to St. Louis?

In general, June 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 $278. The month of September is another great option to travel to St. Louis, with average flight prices from Allentown averaging around $278.

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 28m

Direct flights

None
The fastest flight from Allentown to St. Louis takes 4h 28m
There are no direct flights from Allentown to St. Louis. There are no popular flight routes from Allentown to St. Louis.
Search flight deals

  • 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 28m.

  • 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
11,464 reviews
Search American Airlines flights
DeltaPriceFrom $248Free CancellationRating
7.9
8,291 reviews
Search Delta flights
United AirlinesPriceFrom $293Free CancellationRating
7.4
9,423 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
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Collinsville
St. Peters
Fenton
Alton
Wentzville
Farmington
Edwardsville
Festus
Clayton
Eureka
Litchfield
Glencoe
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
Mon 4/13
Mon 4/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States