HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$269+ Cheap flights from Allentown to St. Louis (ABE - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — STL
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown to St. Louis 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 Allentown to St. Louis

Cheapest flights from Allentown to St. Louis
Explore the most affordable flight options available from Allentown to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This United Airlines deal was found by Cheapflights users on 12/21. 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.
Wed 12/245:07 pmABE - STL
1 stop5h 36mUnited Airlines
Sat 12/273:10 pmSTL - ABE
1 stop5h 37mUnited Airlines
Deal found 12/21$550
This Delta deal was found by Cheapflights users on 12/21. 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.
Sun 12/286:04 pmABE - STL
1 stop6h 38mDelta
Wed 12/315:13 pmSTL - ABE
1 stop4h 33mDelta
Deal found 12/21$583
This American Airlines deal was found by Cheapflights users on 12/23. 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.
Mon 12/2911:50 amABE - STL
1 stop6h 34mAmerican Airlines
Wed 12/319:09 amSTL - ABE
1 stop6h 24mAmerican Airlines
Deal found 12/23$613
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/226:04 amABE - STL
1 stop14h 26mAmerican Airlines
Sat 12/277:05 amSTL - ABE
1 stop15h 24mAmerican Airlines
Deal found 12/21$718
This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
Sun 12/284:58 pmABE - STL
1 stop17h 47mMultiple Airlines
Wed 12/317:43 pmSTL - ABE
2 stops26h 45mMultiple Airlines
Deal found 12/21$792
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Wed 12/246:04 amABE - STL
1 stop8h 10mAmerican Airlines
Sat 12/276:02 amSTL - ABE
2 stops9h 31mAmerican Airlines
Deal found 12/21$814
This Kiwi.com deal was found by Cheapflights users on 12/23. 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.
Mon 12/292:16 pmABE - STL
2 stops21h 40mMultiple Airlines
Wed 12/314:27 pmSTL - ABE
1 stop23h 22mMultiple Airlines
Deal found 12/23$842

Find flight deals from Allentown to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to St. Louis (STL). 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 December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$269
(Delta)

Popular in

December

Cheapest in

June

Average price

$528
Provider with most accurate pricing for Allentown-Bethlehem-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-Lambert-St Louis flights.
Search Deals
From Allentown-Bethlehem to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($17 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 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, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Allentown to St. Louis that are best for you.

Fly from

Allentown

Fly to

St. Louis

Route

Depart

Return

Price

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Wed 2/18

5:58 pm-11:36 pm

1 stop6h 38m

Lambert-St Louis

Sat 2/21

5:01 pm-10:49 pm

1 stop4h 48m

$269

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Wed 1/7

5:59 pm-11:39 pm

1 stop6h 40m

Lambert-St Louis

Wed 1/14

6:00 am-12:05 pm

1 stop5h 05m

$274

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Thu 1/8

5:59 pm-11:39 pm

1 stop6h 40m

Lambert-St Louis

Sun 1/11

6:00 am-12:05 pm

1 stop5h 05m

$279

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Fri 4/3

5:59 pm-11:58 pm

1 stop6h 59m

Lambert-St Louis

Tue 4/7

10:12 am-5:17 pm

1 stop6h 05m

$304

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Fri 2/6

8:30 am-11:33 pm

1 stop16h 03m

Lambert-St Louis

Sun 2/8

5:42 pm-9:26 pm

1 stop26h 44m

$314

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Wed 2/18

9:00 am-10:27 pm

1 stop14h 27m

Lambert-St Louis

Sat 2/21

8:17 pm-8:15 pm

2 stops22h 58m

$336

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Wed 1/21

6:15 am-12:29 pm

1 stop7h 14m

Lambert-St Louis

Sat 1/24

3:11 pm-9:05 pm

1 stop4h 54m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Compare providers for flights from Allentown to St. Louis

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 Allentown to St. Louis in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Allentown-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Allentown-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Allentown-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Allentown-St. Louis 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 Allentown-St. Louis 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 Allentown to St. Louis

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

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

Currently, October is the cheapest month in which you can book a flight from Allentown to St. Louis (average of $168). Flying from Allentown to St. Louis in December is currently the most expensive (average of $247). 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.

What is the cheapest time of day to fly from ABE to STL?

Find hourly flight availability from Allentown to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

When flying from Allentown to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 46% versus a flight at noon.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated December 23, 2025.
Peruse reviews from past customers who have flown with Delta and American Airlines from Allentown to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,014 reviews

Food

7.3

Entertainment

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Comfort

7.9

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
8,014 reviews
Delta
7.9
Good
8,014 reviews

Food

7.3

Entertainment

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Comfort

7.9

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
11,054 reviews
Delta
7.9
Good
8,014 reviews

Food

7.3

Entertainment

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Comfort

7.9

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 Allentown to St. Louis. 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 Allentown to St. Louis?

    Departing from Allentown to St. Louis will take you 6h 38m. Allentown and St. Louis are separated by a distance of 803 mi.

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

    Cheapflights users have booked flights from Allentown to St. Louis round-trip from $228. Another airline that can offer you cheap pricing is Delta. Users have found that American Airlines is 32% cheaper than the other options available to this destination.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Allentown to St. Louis (average of $168). Flying from Allentown to St. Louis in December is currently the most expensive (average of $247). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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.

Alternative routes for Allentown to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Kansas City flights
LaGuardia to Kansas City flights
Newark to St. Louis flights
LaGuardia to St. Louis flights
Dulles Intl to St. Louis flights
Newark to Kansas City flights
Dulles Intl to Kansas City flights
John F Kennedy Intl to St. Louis flights
Reagan-National to St. Louis flights
Philadelphia to St. Louis flights
Reagan-National to Kansas City flights
Philadelphia to Kansas City flights
Philadelphia to Springfield flights
Pittsburgh to St. Louis flights
John F Kennedy Intl to Springfield flights
LaGuardia to Springfield flights
Reagan-National to Springfield flights
Dulles Intl to Springfield flights
Pittsburgh to Kansas City flights
Newark to Springfield flights
Harrisburg to Springfield flights
Allentown to Kansas City flights
Dulles Intl to Columbia flights
Allentown to Springfield flights
Reagan-National to Columbia flights
Pittsburgh to Springfield flights
Harrisburg to Kansas City flights
Harrisburg to St. Louis flights
State College to St. Louis flights
Scranton to St. Louis flights
Scranton to Kansas City flights
Reagan-National to Joplin flights
LaGuardia to Joplin flights
Pittsburgh to Joplin flights
Philadelphia to Joplin flights
Philadelphia to Columbia flights
Scranton to Springfield flights
LaGuardia to Columbia flights
Newark to Columbia flights
Newark to Joplin flights
Dulles Intl to Joplin flights
Elmira to St. Louis flights
Harrisburg to Joplin flights
State College to Kansas City flights
Allentown to Columbia flights
State College to Springfield flights
Scranton to Joplin flights
John F Kennedy Intl to Columbia flights

Top 2 airlines flying from Allentown to St. Louis

Discover the top 2 airlines that operate flights from Allentown to St. Louis. 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$301FlexibilityNo cancel feeOn-time71%
DeltaCheapest$242Average$333FlexibilityNo 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.