$271+ 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 6/19. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — STL
May 17 — May 241
Round-trip
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
Best
Last-minute
One-way
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 17, 2026.
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 17, 2026.
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Sat 6/276:15 am
ABE
- STL
1 stop6h 52m
United Airlines
Tue 6/309:23 am
STL
- ABE
1 stop6h 43m
United Airlines
Deal found 4/15![United Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Thu 4/309:00 am
ABE
- STL
1 stop15h 19m
Multiple Airlines
Fri 5/14:59 pm
STL
- ABE
1 stop21h 42m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 4/13. 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.
Sat 6/2710:38 am
ABE
- STL
1 stop6h 08m
United Airlines
Sun 6/286:00 am
STL
- ABE
1 stop6h 48m
United Airlines
Deal found 4/13![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 4/16. 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.
Fri 6/56:15 pm
ABE
- STL
1 stop6h 44m
Delta
Mon 6/83:57 pm
STL
- ABE
1 stop5h 33m
Delta
Deal found 4/16![Delta logo]()
$341
This Delta deal was found by Cheapflights users on 4/15. 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 7/186:05 pm
ABE
- STL
1 stop6h 35m
Delta
Sun 7/263:40 pm
STL
- ABE
1 stop5h 47m
Delta
Deal found 4/15![Delta logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 4/12. 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.
Sat 5/1610:00 am
ABE
- STL
1 stop15h 21m
Multiple Airlines
Mon 5/184:19 pm
STL
- ABE
1 stop18h 08m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$352
This Delta deal was found by Cheapflights users on 4/13. 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.
Tue 4/285:59 pm
ABE
- STL
1 stop6h 37m
Delta
Sat 5/25:00 pm
STL
- ABE
1 stop5h 00m
Delta
Deal found 4/13![Delta logo]()
$355
This Delta deal was found by Cheapflights users on 4/12. 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 5/96:15 pm
ABE
- STL
1 stop6h 44m
Delta
Wed 5/1310:49 am
STL
- ABE
1 stop5h 39m
Delta
Deal found 4/12![Delta logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/111:41 pm
ABE
- STL
2 stops28h 52m
Multiple Airlines
Sat 5/164:19 pm
STL
- ABE
1 stop18h 52m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 4/15. 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.
Fri 5/296:15 pm
ABE
- STL
1 stop6h 44m
Delta
Sun 5/319:13 am
STL
- ABE
1 stop7h 15m
Delta
Deal found 4/15![Delta logo]()
$371
This Delta deal was found by Cheapflights users on 4/14. 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.
Fri 5/86:15 pm
ABE
- STL
1 stop6h 44m
Delta
Sun 5/106:00 am
STL
- ABE
1 stop5h 19m
Delta
Deal found 4/14![Delta logo]()
$380
Best flights from Allentown to St. LouisDiscover 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 17, 2026.
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 17, 2026.
This United Airlines deal was found by Cheapflights users on 4/13. 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.
Sat 6/2710:38 am
ABE
- STL
1 stop6h 08m
United Airlines
Sun 6/286:00 am
STL
- ABE
1 stop6h 48m
United Airlines
Deal found 4/13![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 4/12. 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 5/96:15 pm
ABE
- STL
1 stop6h 44m
Delta
Wed 5/1310:49 am
STL
- ABE
1 stop5h 39m
Delta
Deal found 4/12![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 4/12. 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.
Fri 8/146:30 am
ABE
- STL
1 stop7h 23m
Delta
Mon 8/173:42 pm
STL
- ABE
1 stop6h 14m
Delta
Deal found 4/12![Delta logo]()
$407
This United Airlines deal was found by Cheapflights users on 4/15. 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 5/82:25 pm
ABE
- STL
1 stop7h 48m
United Airlines
Tue 5/127:45 am
STL
- ABE
1 stop4h 53m
United Airlines
Deal found 4/15![United Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 4/12. 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.
Tue 6/301:12 pm
ABE
- STL
1 stop5h 55m
Delta
Fri 7/103:40 pm
STL
- ABE
1 stop5h 47m
Delta
Deal found 4/12![Delta logo]()
$407
This United Airlines deal was found by Cheapflights users on 4/13. 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 4/295:43 pm
ABE
- STL
1 stop4h 30m
United Airlines
Sun 5/37:45 am
STL
- ABE
1 stop4h 53m
United Airlines
Deal found 4/13![United Airlines logo]()
$443
This Delta deal was found by Cheapflights users on 4/15. 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.
Wed 4/296:33 am
ABE
- STL
1 stop6h 23m
Delta
Sun 5/36:00 am
STL
- ABE
1 stop5h 12m
Delta
Deal found 4/15![Delta logo]()
$411
This Delta deal was found by Cheapflights users on 4/12. 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.
Fri 7/31:12 pm
ABE
- STL
1 stop5h 55m
Delta
Mon 7/63:45 pm
STL
- ABE
1 stop5h 45m
Delta
Deal found 4/12![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 4/15. 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 6/276:09 pm
ABE
- STL
1 stop6h 34m
Delta
Fri 7/33:45 pm
STL
- ABE
1 stop5h 45m
Delta
Deal found 4/15![Delta logo]()
$435
This Delta deal was found by Cheapflights users on 4/15. 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.
Thu 5/76:27 am
ABE
- STL
1 stop6h 53m
Delta
Sun 5/106:00 am
STL
- ABE
1 stop5h 19m
Delta
Deal found 4/15![Delta logo]()
$435
This Delta deal was found by Cheapflights users on 4/15. 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.
Mon 6/86:09 pm
ABE
- STL
1 stop5h 05m
Delta
Thu 6/113:57 pm
STL
- ABE
1 stop5h 33m
Delta
Deal found 4/15![Delta logo]()
$441
Last-minute flights from Allentown to St. LouisDiscover last-minute flight deals from Allentown to St. Louis. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Allentown to St. Louis. Data last updated April 17, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/13. 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.
Tue 4/285:59 pm
ABE
- STL
1 stop6h 37m
Delta
Sat 5/25:00 pm
STL
- ABE
1 stop5h 00m
Delta
Deal found 4/13![Delta logo]()
$355
This United Airlines deal was found by Cheapflights users on 4/12. 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 4/295:43 pm
ABE
- STL
1 stop6h 28m
United Airlines
Sun 5/37:45 am
STL
- ABE
1 stop4h 53m
United Airlines
Deal found 4/12![United Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Thu 4/309:00 am
ABE
- STL
1 stop15h 19m
Multiple Airlines
Fri 5/14:59 pm
STL
- ABE
1 stop21h 42m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 4/14. 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.
Fri 5/86:15 pm
ABE
- STL
1 stop6h 44m
Delta
Sun 5/106:00 am
STL
- ABE
1 stop5h 19m
Delta
Deal found 4/14![Delta logo]()
$380
This United Airlines deal was found by Cheapflights users on 4/14. 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 5/82:25 pm
ABE
- STL
1 stop7h 48m
United Airlines
Sun 5/107:45 am
STL
- ABE
1 stop4h 53m
United Airlines
Deal found 4/14![United Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 4/12. 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 5/96:15 pm
ABE
- STL
1 stop6h 44m
Delta
Wed 5/1310:49 am
STL
- ABE
1 stop5h 39m
Delta
Deal found 4/12![Delta logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/111:41 pm
ABE
- STL
2 stops28h 52m
Multiple Airlines
Sat 5/164:19 pm
STL
- ABE
1 stop18h 52m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 4/12. 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.
Sat 5/1610:00 am
ABE
- STL
1 stop15h 21m
Multiple Airlines
Mon 5/184:19 pm
STL
- ABE
1 stop18h 08m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$352
This American Airlines deal was found by Cheapflights users on 4/14. 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.
Sat 5/1612:00 pm
ABE
- STL
1 stop6h 49m
American Airlines
Mon 5/186:54 pm
STL
- ABE
1 stop4h 28m
American Airlines
Deal found 4/14![American Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 4/15. 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.
Fri 5/296:15 pm
ABE
- STL
1 stop6h 44m
Delta
Sun 5/319:13 am
STL
- ABE
1 stop7h 15m
Delta
Deal found 4/15![Delta logo]()
$371
This American Airlines deal was found by Cheapflights users on 4/16. 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 5/295:46 pm
ABE
- STL
1 stop6h 58m
American Airlines
Mon 6/16:12 pm
STL
- ABE
1 stop5h 09m
American Airlines
Deal found 4/16![American Airlines logo]()
$411
One-way flights from Allentown to St. LouisSearch for one-way flight options from Allentown to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Allentown to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Delta deal was found by Cheapflights users on 4/12. 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.
Fri 6/196:09 pm
ABE
- STL
1 stop6h 47m
Delta
Deal found 4/12![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 4/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:30 am
ABE
- STL
1 stop5h 11m
Delta
Deal found 4/11![Delta logo]()
$320
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 April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $313 (United Airlines) |
One-way from | $271 (Delta) |
Popular in | December |
Cheapest in | June |
Average price | $385 |
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 April 17, 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
Cheapest round-trip
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Sat 6/27
10:38 am-3:46 pm
1 stop6h 08m
Lambert-St Louis
Sun 6/28
6:00 am-1:48 pm
1 stop6h 48m
$329
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Sat 5/9
6:15 pm-11:59 pm
1 stop6h 44m
Lambert-St Louis
Wed 5/13
10:49 am-5:28 pm
1 stop5h 39m
$369
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Fri 8/14
6:30 am-12:53 pm
1 stop7h 23m
Lambert-St Louis
Mon 8/17
3:42 pm-10:56 pm
1 stop6h 14m
$407
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Tue 6/30
1:12 pm-6:07 pm
1 stop5h 55m
Lambert-St Louis
Fri 7/10
3:40 pm-10:27 pm
1 stop5h 47m
$407
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Wed 4/29
6:33 am-11:56 am
1 stop6h 23m
Lambert-St Louis
Sun 5/3
6:00 am-12:12 pm
1 stop5h 12m
$411
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Fri 7/3
1:12 pm-6:07 pm
1 stop5h 55m
Lambert-St Louis
Mon 7/6
3:45 pm-10:30 pm
1 stop5h 45m
$419
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Fri 5/8
2:25 pm-9:13 pm
1 stop7h 48m
Lambert-St Louis
Tue 5/12
7:45 am-1:38 pm
1 stop4h 53m
$424
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Sat 6/27
6:09 pm-11:43 pm
1 stop6h 34m
Lambert-St Louis
Fri 7/3
3:45 pm-10:30 pm
1 stop5h 45m
$435
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Thu 5/7
6:27 am-12:20 pm
1 stop6h 53m
Lambert-St Louis
Sun 5/10
6:00 am-12:19 pm
1 stop5h 19m
$435
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Mon 6/8
6:09 pm-10:14 pm
1 stop5h 05m
Lambert-St Louis
Thu 6/11
3:57 pm-10:30 pm
1 stop5h 33m
$441
Showing 1-10 of 13 resultsSorted by cheapest first
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.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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 FlightHub the most. FlightHub 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.
ABE-STL
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, June is the cheapest month in which you can book a flight from Allentown to St. Louis (average of $278). Flying from Allentown to St. Louis in December is currently the most expensive (average of $518). 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.
How much does it cost to fly round-trip from Allentown to St. Louis?
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 April 17, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican 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.
Comfort
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
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
Complete your trip
Flights by cabin class
Other flight options
Other flights from Allentown
Popular flights
St. Louis flight routes
Alternative routes for Allentown to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Allentown to St. Louis by cabin class
Find flights from Allentown to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Allentown and St. Louis flights
Browse other Allentown and St. Louis flight options. Last updated on April 17, 2026.
Other flights from Allentown
Browse through other flights departing from Allentown. Flights are based on user searches made on Cheapflights and were last updated on April 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 17, 2026.
Top 3 airlines flying from Allentown to St. Louis
Discover the top 3 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 April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$228 | Average$295 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$248 | Average$385 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$293 | Average$420 | FlexibilityNo cancel fee | On-time69% |