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 $249. Other airlines that can offer you cheap pricing are Delta, from $259, and United Airlines, from $1,309. Users have found that American Airlines is 22% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Allentown to St. Louis one-way?

The cheapest airlines for a one-way flight from Allentown to St. Louis are American Airlines ($100), Delta ($375), and United Airlines ($445).

What is the cheapest day to fly from Allentown to St. Louis?

Travelers seeking maximum savings on their Allentown to St. Louis flight should consider departing on Saturday mornings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Allentown to St. Louis?

When booking a flight from Allentown to St. Louis, you may want to consider flying on American Airlines, Delta or United Airlines as they are the most popular for this route.

What is the cheapest day to fly round-trip from Allentown to St. Louis?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 86% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Allentown to St. Louis?

Find a great deal and save up to 55% by booking at least 32 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Allentown to St. Louis within the next two weeks, with the cheapest ticket starting at $263.

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

Our data shows that September tends to be the cheapest month to fly to St. Louis from Allentown. Users have commonly found prices around $323 for the month, but tickets can be as low as $178. Due to multiple factors, prepare for potentially higher prices in December.

Most accurate provider : When it comes to deals on Allentown-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-St. Louis flight deals on Cheapflights vs. FlightHub >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.

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.

$100+ Flights from Allentown to St. Louis

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Cheapflights Tip: The best prices from Allentown-Bethlehem to Lambert-St Louis are usually found in September or July, booked 85 days in advance, depart on a Tuesday or Saturday and return on a Saturday

Cheap flight deals from Allentown to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$249 (American Airlines)
One-way from	$100 (American Airlines)
Popular in	December
Cheapest in	September
Average price	$326

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

One-way flight from Allentown-Bethlehem to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($52 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

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Find 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 April 14, 2025.

Wed 6/117:36 pmABE - STL

1 stop5h 23mAmerican Airlines

Tue 6/1712:45 pmSTL - ABE

1 stop5h 47mAmerican Airlines

Deal found 4/12

$249

Tue 4/291:07 pmABE - STL

1 stop5h 55mDelta

Sat 5/36:00 amSTL - ABE

1 stop5h 27mDelta

Deal found 4/14

$259

Mon 4/2112:38 pmABE - STL

2 stops29h 37mMultiple Airlines

Wed 4/3012:15 pmSTL - ABE

3 stops25h 09mMultiple Airlines

Deal found 4/14

$533

Mon 4/286:30 amABE - STL

1 stop5h 33mUnited Airlines

Mon 5/53:43 pmSTL - ABE

1 stop5h 02mUnited Airlines

Deal found 4/14

$1,309

Best flights from Allentown to St. Louis
Discover carefully curated flight deals from Allentown to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 14, 2025.

Wed 6/117:36 pmABE - STL

1 stop5h 23mAmerican Airlines

Tue 6/1712:45 pmSTL - ABE

1 stop5h 47mAmerican Airlines

Deal found 4/12

$249

Tue 4/291:07 pmABE - STL

1 stop5h 55mDelta

Sat 5/36:00 amSTL - ABE

1 stop5h 27mDelta

Deal found 4/14

$259

Mon 4/2112:38 pmABE - STL

2 stops29h 37mMultiple Airlines

Wed 4/3012:15 pmSTL - ABE

3 stops25h 09mMultiple Airlines

Deal found 4/14

$533

Mon 4/286:30 amABE - STL

1 stop5h 33mUnited Airlines

Mon 5/53:43 pmSTL - ABE

1 stop5h 02mUnited Airlines

Deal found 4/14

$1,309

Last-minute flights from Allentown to St. Louis
Discover last-minute flight deals from Allentown to St. Louis. Data last updated April 14, 2025 and is based on user searches.

Mon 4/215:21 pmABE - STL

1 stop7h 15mDelta

Wed 4/3010:42 amSTL - ABE

1 stop4h 59mDelta

Deal found 4/14

$439

Mon 4/2112:38 pmABE - STL

2 stops29h 37mMultiple Airlines

Wed 4/3012:15 pmSTL - ABE

3 stops25h 09mMultiple Airlines

Deal found 4/14

$533

Wed 4/235:25 pmABE - STL

1 stop4h 59mAmerican Airlines

Sat 4/269:18 amSTL - ABE

1 stop6h 37mAmerican Airlines

Deal found 4/13

$309

Mon 4/286:30 amABE - STL

1 stop5h 33mUnited Airlines

Mon 5/53:43 pmSTL - ABE

1 stop5h 02mUnited Airlines

Deal found 4/14

$1,309

Tue 4/291:07 pmABE - STL

1 stop5h 55mDelta

Sat 5/36:00 amSTL - ABE

1 stop5h 27mDelta

Deal found 4/14

$259

One-way flights from Allentown to St. Louis
Search for one-way flight options from Allentown to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 14, 2025.

Sun 4/206:05 amABE - STL

1 stop7h 48mAmerican Airlines

Deal found 4/13

$100

Sat 4/192:47 pmABE - STL

1 stop27h 28mMultiple Airlines

Deal found 4/13

$222

Mon 4/211:07 pmABE - STL

1 stop5h 49mDelta

Deal found 4/13

$375

Mon 7/75:35 pmABE - STL

2 stops28h 01mUnited Airlines

Deal found 4/13

$445

Cheapflights Fare Finder

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

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Wed 6/11

7:36 pm-11:59 pm

1 stop5h 23m

Lambert-St Louis

Tue 6/17

12:45 pm-7:32 pm

1 stop5h 47m

$249

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Tue 4/29

1:07 pm-6:02 pm

1 stop5h 55m

Lambert-St Louis

Sat 5/3

6:00 am-12:27 pm

1 stop5h 27m

$259

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Mon 4/21

12:38 pm-5:15 pm

2 stops29h 37m

Lambert-St Louis

Wed 4/30

12:15 pm-2:24 pm

3 stops25h 09m

$533

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Mon 4/28

6:30 am-11:03 am

1 stop5h 33m

Lambert-St Louis

Mon 5/5

3:43 pm-9:45 pm

1 stop5h 02m

$1,309

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Sun 4/20

6:05 am-12:53 pm

1 stop7h 48m

$100

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Sat 4/19

2:47 pm-5:15 pm

1 stop27h 28m

$222

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Mon 4/21

1:07 pm-5:56 pm

1 stop5h 49m

$375

AllentownSt. Louis

ABE - STL

ABESTL

Allentown-Bethlehem

Mon 7/7

5:35 pm-8:36 pm

2 stops28h 01m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/13

Compare providers for flights from Allentown to St. Louis

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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-St. Louis flight deals on Cheapflights vs. FlightHub >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

How far ahead should I book a flight from Allentown to St. Louis?

To ensure you get the cheapest price possible for a flight from Allentown to St. Louis, you should look to book at least 85 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Allentown to St. Louis (average of $311). Flying from Allentown to St. Louis in March is currently the most expensive (average of $356). 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?

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 afternoon, which can drop the price by up to 21% versus a flight in the morning.

Rainfall in St. Louis by month

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

To help decide which airline to fly from Allentown to St. Louis, see what other customers have to say about Delta, United Airlines and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,917 reviews

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

7,917 reviews

Delta

8.0

Very good

7,917 reviews

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

8,656 reviews

Delta

8.0

Very good

7,917 reviews

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

7,917 reviews

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

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 $249. Other airlines that can offer you cheap pricing are Delta, from $259, and United Airlines, from $1,309. Users have found that American Airlines is 22% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Allentown to St. Louis one-way?
The cheapest airlines for a one-way flight from Allentown to St. Louis are American Airlines ($100), Delta ($375), and United Airlines ($445).
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, August is the cheapest month in which you can book a flight from Allentown to St. Louis (average of $311). Flying from Allentown to St. Louis in March is currently the most expensive (average of $356). 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

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Complete your trip

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Other flights to St. Louis

Top 3 airlines flying from Allentown to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$217	Average$315	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$236	Average$418	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$242	Average$353	FlexibilityNo cancel fee	On-timeN/A

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$100+ Cheap flights from Allentown to St. Louis (ABE - STL)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Allentown to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Allentown-Bethlehem to Lambert-St Louis are usually found in September or July, booked 85 days in advance, depart on a Tuesday or Saturday and return on a Saturday

Cheap flight deals from Allentown to St. Louis

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Allentown to St. Louis

Cheapest flights from Allentown to St. LouisExplore 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 April 14, 2025.

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 April 14, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Allentown to St. Louis that are best for you.

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 April.

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.

Cheapflights Insights

Everything you need to know about your flight from Allentown to St. Louis

How far ahead should I book a flight from Allentown to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Allentown to St. Louis. Price data was last updated on April 11, 2025.

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

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 April 14, 2025.

Rainfall in St. Louis by month

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

Temperature in St. Louis by month

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

Reviews of airlines servicing St. Louis

To help decide which airline to fly from Allentown to St. Louis, see what other customers have to say about Delta, United Airlines and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

What are the cheapest airlines to fly from Allentown to St. Louis one-way?

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

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

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

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

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Top 3 airlines flying from Allentown to St. Louis

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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 April 14, 2025.