HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Allentown

$194+ Cheap flights from St. Louis to Allentown (STL - ABE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ABE
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Allentown with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Allentown

Cheapest flights from St. Louis to Allentown
Explore the most affordable flight options available from St. Louis to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

This Delta deal was found by Cheapflights users on 12/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/146:00 amSTL - ABE
1 stop5h 14mDelta
dom. 12/216:04 pmABE - STL
1 stop6h 38mDelta
Deal found 12/9$444
This American Airlines deal was found by Cheapflights users on 12/10. 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.
jue. 12/255:00 amSTL - ABE
1 stop5h 20mAmerican Airlines
lun. 12/295:15 pmABE - STL
1 stop7h 40mAmerican Airlines
Deal found 12/10$489
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/243:10 pmSTL - ABE
1 stop5h 37mUnited Airlines
mar. 12/302:30 pmABE - STL
1 stop8h 13mUnited Airlines
Deal found 12/9$519
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/173:30 pmSTL - ABE
1 stop28h 06mMultiple Airlines
dom. 1/48:31 pmABE - STL
2 stops39h 25mMultiple Airlines
Deal found 12/11$553
This American Airlines deal was found by Cheapflights users on 12/11. 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.
mié. 12/178:13 amSTL - ABE
1 stop13h 45mAmerican Airlines
dom. 1/411:50 amABE - STL
1 stop13h 05mAmerican Airlines
Deal found 12/11$683
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/228:05 amSTL - ABE
1 stop4h 50mUnited Airlines
mié. 12/245:07 pmABE - STL
1 stop5h 36mUnited Airlines
Deal found 12/9$794
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/153:19 pmSTL - ABE
1 stop5h 27mUnited Airlines
vie. 12/195:07 pmABE - STL
1 stop6h 36mUnited Airlines
Deal found 12/9$853
This American Airlines deal was found by Cheapflights users on 12/9. 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.
jue. 12/115:02 amSTL - ABE
1 stop7h 28mAmerican Airlines
vie. 12/124:30 pmABE - STL
1 stop16h 54mAmerican Airlines
Deal found 12/9$863

Find flight deals from St. Louis to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Allentown (ABE). 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 diciembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$291
(Kiwi.com)

One-way from

$194
(United Airlines)

Popular in

February

Cheapest in

September

Average price

$378
Provider with most accurate pricing for Lambert-St Louis-Allentown-Bethlehem flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Allentown-Bethlehem flights.
Search Deals
From Lambert-St Louis to Allentown-Bethlehem
Search Deals
One-way flight from Lambert-St Louis to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Allentown 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 diciembre 12, 2025.
Use the filters below to find and compare flights from St. Louis to Allentown that are best for you.

Fly from

St. Louis

Fly to

Allentown

Route

Depart

Return

Price

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

jue. 1/8

5:11 pm-9:26 pm

1 stop27h 15m

Allentown-Bethlehem

jue. 1/15

6:49 pm-6:51 am

2 stops37h 02m

$291

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

vie. 1/16

9:57 am-4:22 pm

1 stop5h 25m

Allentown-Bethlehem

dom. 1/18

6:15 am-12:29 pm

1 stop7h 14m

$362

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

jue. 1/8

9:57 am-4:22 pm

1 stop5h 25m

Allentown-Bethlehem

lun. 1/12

4:57 pm-2:30 pm

1 stop22h 33m

$409

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

vie. 1/16

8:39 am-10:01 pm

2 stops12h 22m

Allentown-Bethlehem

dom. 1/18

8:30 am-10:34 pm

1 stop15h 04m

$429

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

dom. 2/1

6:00 am-11:59 am

1 stop4h 59m

Allentown-Bethlehem

jue. 2/5

12:48 pm-5:50 pm

1 stop6h 02m

$434

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

mié. 12/24

3:10 pm-9:47 pm

1 stop5h 37m

$194

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

dom. 5/17

6:00 am-12:10 pm

1 stop5h 10m

$232

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

mié. 12/24

5:19 pm-4:49 pm

2 stops22h 30m

$234

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

mar. 12/23

9:50 am-1:38 pm

3 stops26h 48m

$252

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

dom. 5/17

6:05 am-4:19 pm

2 stops9h 14m

$521

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 12 results
1
2

Compare providers for flights from St. Louis to Allentown

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 St. Louis to Allentown in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 St. Louis-Allentown flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Allentown flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Allentown flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Allentown flights, Cheapflights users trust eDreams the most. eDreams 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 St. Louis-Allentown 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 St. Louis to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from St. Louis 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 St. Louis to Allentown

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Allentown (average of $129). Flying from St. Louis to Allentown in June is currently the most expensive (average of $244). 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.

Reviews of airlines servicing Allentown

Get insights into the airlines that provide service to Allentown. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Allentown. Reviews last updated diciembre 12, 2025.
Get a feel of what it's like to fly with Delta and American Airlines from St. Louis to Allentown by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,050 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Allentown. 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 St. Louis to Allentown?

    For as low as $362, United Airlines can have you in Allentown from St. Louis in 5h 25m. Airlines will cover a distance of 803 mi.

  • What are the cheapest airlines flying from St. Louis to Allentown round-trip?

    Currently priced at $228, American Airlines will fly you from St. Louis to Allentown and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as $303. Users have found that American Airlines is 35% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Allentown 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 St. Louis to Allentown?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Allentown (average of $129). Flying from St. Louis to Allentown in June is currently the most expensive (average of $244). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Other flights to Allentown

Explore flights to Allentown departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on diciembre 12, 2025.
Myrtle Beach to Allentown flights
Fort Myers to Allentown flights
Orlando to Allentown flights
Melbourne to Allentown flights
Fort Lauderdale to Allentown flights
St Petersburg to Allentown flights
Allentown to Melbourne, Florida flights
Allentown to Nashville flights
Allentown to Orlando Sanford Intl Airport flights
Allentown to Tampa flights
Allentown to Orlando Airport flights
Allentown to Myrtle Beach flights
Allentown to Fort Myers flights
Allentown to Philadelphia flights
Allentown to Sarasota flights
Allentown to Fort Lauderdale flights
Allentown to Punta Gorda flights
Allentown to Nashville flights
Allentown to Melbourne, Florida flights
Allentown to Fort Myers flights
Allentown to Myrtle Beach flights
Allentown to Punta Gorda flights
Allentown to Denver flights
Allentown to Orlando Sanford Intl Airport flights

Top 2 airlines flying from St. Louis to Allentown

Discover the top 2 airlines that operate flights from St. Louis to Allentown. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$303FlexibilityNo cancel feeOn-time71%
DeltaCheapest$303Average$478FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.