Lehigh Valley

$149+ Cheap flights from St. Louis (STL) to Lehigh Valley

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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ABE
May 3 — May 101
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Cheap flight deals from St. Louis to Lehigh Valley

Cheapest flights from St. Louis to Lehigh Valley
Explore the most affordable flight options available from St. Louis to Lehigh Valley. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/1. 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 6/155:33 pm
STL
-
ABE
2 stops21h 24m
Multiple Airlines
Tue 6/2310:00 am
ABE
-
STL
1 stop15h 14m
Multiple Airlines
Deal found 4/1$320
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 4/307:45 am
STL
-
ABE
1 stop4h 53m
United Airlines
Sun 5/32:25 pm
ABE
-
STL
1 stop7h 48m
United Airlines
Deal found 3/31$329
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/204:59 pm
STL
-
ABE
1 stop17h 28m
Multiple Airlines
Mon 4/271:41 pm
ABE
-
STL
2 stops42h 09m
Multiple Airlines
Deal found 3/30$334
This Delta deal was found by Cheapflights users on 4/3. 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 4/306:00 am
STL
-
ABE
1 stop5h 12m
Delta
Sun 5/36:33 am
ABE
-
STL
1 stop5h 01m
Delta
Deal found 4/3$371
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Thu 4/236:55 pm
STL
-
ABE
1 stop4h 27m
American Airlines
Tue 4/286:00 am
ABE
-
STL
1 stop4h 44m
American Airlines
Deal found 4/1$375
This American Airlines deal was found by Cheapflights users on 4/1. 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 5/186:54 pm
STL
-
ABE
1 stop4h 28m
American Airlines
Wed 5/2012:00 pm
ABE
-
STL
1 stop7h 04m
American Airlines
Deal found 4/1$386
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 4/3011:21 am
STL
-
ABE
2 stops31h 49m
Multiple Airlines
Sun 5/39:00 am
ABE
-
STL
1 stop15h 19m
Multiple Airlines
Deal found 4/3$397
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Mon 6/151:13 pm
STL
-
ABE
1 stop7h 04m
United Airlines
Tue 6/232:23 pm
ABE
-
STL
1 stop7h 53m
United Airlines
Deal found 4/1$407
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sun 6/219:23 am
STL
-
ABE
1 stop6h 38m
United Airlines
Sun 6/286:15 am
ABE
-
STL
1 stop6h 56m
United Airlines
Deal found 3/31$410
This Delta deal was found by Cheapflights users on 4/1. 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 4/236:00 am
STL
-
ABE
1 stop5h 12m
Delta
Sun 4/265:59 pm
ABE
-
STL
1 stop6h 37m
Delta
Deal found 4/1$418

Find flight deals from St. Louis to Lehigh Valley

Keep the following information in mind while searching for St. Louis to Lehigh Valley flight deals. Data was last updated April 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$320
(Kiwi.com)

One-way from

$149
(American Airlines)

Popular in

March

Cheapest in

September

Average price

$303
Provider with most accurate pricing for Lambert-St Louis-Allentown-Bethlehem flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Allentown-Bethlehem flights.
From Lambert-St Louis to Lehigh Valley
One-way flight from Lambert-St Louis to Lehigh Valley
Highest demand for flights based on searches. 12% potential increase in price ($50 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($23 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Lehigh Valley 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 3, 2026.
Use the filters below to find and compare flights from St. Louis to Lehigh Valley that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Thu 4/30

7:45 am-1:38 pm

1 stop4h 53m

Allentown-Bethlehem

Sun 5/3

2:25 pm-9:13 pm

1 stop7h 48m

$329

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Mon 4/20

4:59 pm-11:27 am

1 stop17h 28m

Allentown-Bethlehem

Mon 4/27

1:41 pm-6:50 am

2 stops42h 09m

$334

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Thu 4/30

6:00 am-12:12 pm

1 stop5h 12m

Allentown-Bethlehem

Sun 5/3

6:33 am-10:34 am

1 stop5h 01m

$371
Quickest round-trip

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Thu 4/23

6:55 pm-12:22 am

1 stop4h 27m

Allentown-Bethlehem

Tue 4/28

6:00 am-9:44 am

1 stop4h 44m

$375

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Mon 6/15

1:13 pm-9:17 pm

1 stop7h 04m

Allentown-Bethlehem

Tue 6/23

2:23 pm-9:16 pm

1 stop7h 53m

$407

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Sun 6/21

9:23 am-5:01 pm

1 stop6h 38m

Allentown-Bethlehem

Sun 6/28

6:15 am-12:11 pm

1 stop6h 56m

$410

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Wed 7/15

3:40 pm-10:27 pm

1 stop5h 47m

Allentown-Bethlehem

Mon 7/20

6:05 pm-11:53 pm

1 stop6h 48m

$467

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Wed 4/15

9:10 am-5:03 pm

1 stop6h 53m

Allentown-Bethlehem

Sun 4/19

6:15 am-10:45 am

1 stop5h 30m

$568

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Fri 4/17

9:10 am-5:03 pm

1 stop6h 53m

Allentown-Bethlehem

Tue 4/21

5:43 pm-9:13 pm

1 stop4h 30m

$648
Cheapest one-way

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Tue 4/28

3:24 pm-11:28 pm

1 stop7h 04m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Best time to book a flight from St. Louis to Lehigh Valley

Have a flexible travel schedule? Discover the best time to fly to Lehigh Valley 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 Lehigh Valley

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Lehigh Valley (average of $177). Flying from St. Louis to Lehigh Valley in March is currently the most expensive (average of $610). 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 Lehigh Valley

Get insights into the airlines that provide service to Lehigh Valley. 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 Lehigh Valley. Reviews last updated April 3, 2026.
Get a feel of what it's like to fly with Delta and American Airlines from St. Louis to Lehigh Valley by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

Boarding

8.1

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.

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

Boarding

8.1

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.

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

Boarding

8.1

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 St. Louis to Lehigh Valley. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from St. Louis to Lehigh Valley?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Lehigh Valley.

  • How long is the flight from St. Louis to Lehigh Valley?

    Airlines like United Airlines, Delta, and American Airlines fly from St. Louis to Lehigh Valley in about 4h 27m. The time it takes to get you to your destination can typically vary by up to 45m. The distance between St. Louis and Lehigh Valley is about 803 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Lehigh Valley 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 Lehigh Valley?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Lehigh Valley (average of $177). Flying from St. Louis to Lehigh Valley in March is currently the most expensive (average of $610). 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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Top 2 airlines flying from St. Louis to Lehigh Valley

Discover the top 2 airlines that operate flights from St. Louis to Lehigh Valley. 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 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$233Average$303FlexibilityNo cancel feeOn-time71%
DeltaCheapest$274Average$323FlexibilityNo cancel feeOn-timeN/A

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