HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Allentown

$284+ Cheap flights from St. Louis to Allentown (STL - ABE)

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ABE
May 5 — May 121
Mon 5/5
Mon 5/12
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

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 April 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$284
(Delta)

Popular in

February

Cheapest in

August

Average price

$311
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
Highest demand for flights based on searches. 12% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find 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 April 30, 2025.

This Delta deal was found by Cheapflights users on 4/29. 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.
Sat 5/243:40 pmSTL - ABE
1 stop6h 04mDelta
Sun 5/256:00 amABE - STL
1 stop7h 04mDelta
Deal found 4/29$308
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Fri 5/29:40 amSTL - ABE
1 stop6h 17mUnited Airlines
Sun 5/46:37 amABE - STL
1 stop6h 43mUnited Airlines
Deal found 4/28$403
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/29:50 amSTL - ABE
3 stops29h 04mMultiple Airlines
Sun 5/47:30 amABE - STL
1 stop10h 45mMultiple Airlines
Deal found 4/28$753
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Fri 5/212:00 pmSTL - ABE
2 stops9h 18mAmerican Airlines
Sun 5/46:05 amABE - STL
1 stop7h 48mAmerican Airlines
Deal found 4/28$876

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 April 30, 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

Sat 5/24

3:40 pm-10:44 pm

1 stop6h 04m

Allentown-Bethlehem

Sun 5/25

6:00 am-12:04 pm

1 stop7h 04m

$308

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Fri 5/2

9:40 am-4:57 pm

1 stop6h 17m

Allentown-Bethlehem

Sun 5/4

6:37 am-12:20 pm

1 stop6h 43m

$403

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Fri 5/2

9:50 am-3:54 pm

3 stops29h 04m

Allentown-Bethlehem

Sun 5/4

7:30 am-5:15 pm

1 stop10h 45m

$753

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Fri 5/2

12:00 pm-10:18 pm

2 stops9h 18m

Allentown-Bethlehem

Sun 5/4

6:05 am-12:53 pm

1 stop7h 48m

$876

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Mon 5/12

6:47 pm-12:40 am

1 stop4h 53m

$295

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Sat 5/10

9:55 am-5:06 pm

1 stop6h 11m

$375

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Sat 5/3

8:30 am-9:45 pm

2 stops12h 15m

$1,149

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Allentown flight deals on Cheapflights vs. FlightHub >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, February is the cheapest month in which you can book a flight from St. Louis to Allentown (average of $292). Flying from St. Louis to Allentown in December is currently the most expensive (average of $395). 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.

Rainfall in Allentown by month

Plan your trip to Allentown by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Allentown ranges from 2.7 - 5.0 inches per month. July is typically the wettest month, when rainfall can reach 5.0 in. February is typically the driest time to visit Allentown when rainfall is around 2.7 in.

Temperature in Allentown by month

Plan your trip to Allentown by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Allentown, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

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 April 30, 2025.
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Currently priced at $284, Delta will fly you from St. Louis to Allentown and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $687 and $705, respectively. Users have found that Delta is 10% 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, February is the cheapest month in which you can book a flight from St. Louis to Allentown (average of $292). Flying from St. Louis to Allentown in December is currently the most expensive (average of $395). 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 April 30, 2025.
St Petersburg to Allentown flights
Myrtle Beach to Allentown flights
Orlando to Allentown flights
Sarasota to Allentown flights
Melbourne to Allentown flights
Orlando Sanford Intl to Allentown flights
Allentown to Melbourne, Florida flights
Allentown to Nashville flights
Allentown to Punta Gorda flights
Allentown to Fort Lauderdale flights
Allentown to Orlando Sanford Intl Airport flights
Allentown to Tampa flights
Allentown to Orlando Airport flights
Allentown to Myrtle Beach flights
Allentown to Denver flights
Allentown to Melbourne, Florida flights
Allentown to Nashville flights
Allentown to Philadelphia flights
Allentown to Myrtle Beach flights
Allentown to Orlando Airport flights
Allentown to Fort Lauderdale flights
Allentown to Sarasota flights
Allentown to Orlando Sanford Intl Airport flights
Allentown to Punta Gorda flights

Top 3 airlines flying from St. Louis to Allentown

Discover the top 3 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$223Average$488FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$224Average$313FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$477FlexibilityNo 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.