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Allentown

$139+ Cheap flights from San Diego to Allentown (SAN - ABE)

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ABE
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from San Diego to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) 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 September 11, 2025.

Round-trip from

$333
(Delta)

One-way from

$139
(Kiwi.com)

Popular in

November

Cheapest in

March

Average price

$382
From San Diego to Allentown-Bethlehem
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One-way flight from San Diego to Allentown-Bethlehem
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Highest demand for flights based on searches. 14% potential increase in price ($86 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Diego to Allentown

Cheapest flights from San Diego to Allentown
Explore the most affordable flight options available from San Diego to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Delta deal was found by Cheapflights users on 9/11. 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.
Wed 11/512:00 pmSAN - ABE
1 stop7h 15mDelta
Sat 11/86:00 pmABE - SAN
1 stop8h 14mDelta
Deal found 9/11$333
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/277:15 amSAN - ABE
1 stop29h 50mMultiple Airlines
Thu 10/27:30 amABE - SAN
1 stop15h 37mMultiple Airlines
Deal found 9/10$357
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/2710:30 pmSAN - ABE
1 stop9h 08mUnited Airlines
Tue 9/301:00 pmABE - SAN
1 stop8h 30mUnited Airlines
Deal found 9/10$369
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/258:25 amSAN - ABE
2 stops11h 22mMultiple Airlines
Thu 10/27:30 amABE - SAN
1 stop19h 23mMultiple Airlines
Deal found 9/10$380
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/512:40 pmSAN - ABE
1 stop7h 12mAmerican Airlines
Sat 11/86:16 amABE - SAN
2 stops10h 59mAmerican Airlines
Deal found 9/11$385
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/258:25 amSAN - ABE
2 stops11h 22mMultiple Airlines
Sun 9/288:00 amABE - SAN
1 stop30h 09mMultiple Airlines
Deal found 9/10$394
This Delta deal was found by Cheapflights users on 9/10. 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 9/246:15 amSAN - ABE
1 stop8h 16mDelta
Fri 10/312:48 pmABE - SAN
1 stop9h 43mDelta
Deal found 9/10$403
This Delta deal was found by Cheapflights users on 9/10. 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 9/246:15 amSAN - ABE
1 stop8h 16mDelta
Mon 9/296:12 pmABE - SAN
1 stop8h 12mDelta
Deal found 9/10$404
This Delta deal was found by Cheapflights users on 9/10. 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 10/2412:00 pmSAN - ABE
1 stop7h 15mDelta
Mon 10/276:00 pmABE - SAN
1 stop8h 14mDelta
Deal found 9/10$411

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego 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 September 11, 2025.
Use the filters below to find and compare flights from San Diego to Allentown that are best for you.

Fly from

San Diego

Fly to

Allentown

Route

Depart

Return

Price

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Wed 9/24

6:15 am-5:31 pm

1 stop8h 16m

Allentown-Bethlehem

Mon 9/29

6:12 pm-11:24 pm

1 stop8h 12m

$404

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Fri 9/26

10:30 pm-10:38 am

1 stop9h 08m

Allentown-Bethlehem

Thu 10/2

5:28 pm-10:14 pm

1 stop7h 46m

$439

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Fri 9/26

10:30 pm-10:38 am

1 stop9h 08m

Allentown-Bethlehem

Wed 10/1

5:28 pm-10:14 pm

1 stop7h 46m

$439

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Sat 9/27

7:20 pm-10:38 am

2 stops12h 18m

Allentown-Bethlehem

Wed 10/1

5:28 pm-10:14 pm

1 stop7h 46m

$444

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Thu 11/6

8:40 pm-11:48 am

2 stops12h 08m

Allentown-Bethlehem

Sat 11/8

5:22 pm-10:20 pm

1 stop7h 58m

$457

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Fri 9/26

10:30 pm-10:38 am

1 stop9h 08m

Allentown-Bethlehem

Tue 9/30

5:28 pm-10:14 pm

1 stop7h 46m

$469

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Fri 10/10

11:46 am-10:40 pm

1 stop7h 54m

Allentown-Bethlehem

Mon 10/13

1:56 pm-6:46 pm

1 stop7h 50m

$475

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Sat 2/21

6:20 am-5:13 pm

1 stop7h 53m

Allentown-Bethlehem

Tue 2/24

1:00 pm-8:56 pm

1 stop10h 56m

$484

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Thu 10/2

12:04 pm-8:36 am

2 stops41h 32m

$139

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Thu 10/2

10:30 pm-10:38 am

1 stop9h 08m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 17 results
1
2

Best time to book a flight from San Diego to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from San Diego 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 San Diego to Allentown

What is the cheapest month to book a flight from San Diego to Allentown?

Currently, February is the cheapest month in which you can book a flight from San Diego to Allentown (average of $289). Flying from San Diego to Allentown in December is currently the most expensive (average of $382). 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 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 September 11, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from San Diego to Allentown. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Find useful and relevant information for your journey from San Diego to Allentown. 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 San Diego to Allentown?

    Airlines like Delta and United Airlines fly from San Diego to Allentown in about 8h 16m. The time it takes to get you to your destination can typically vary by up to 52m. Airlines will cover a distance of 2353 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Diego to Allentown round-trip?

    Flying on Delta is currently your cheapest option to Allentown, with prices starting at $308. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $382 and $393, respectively. Users have found that Delta is 37% cheaper than the other options available to this destination.

  • Can I find deals for flights from San Diego to Allentown that include hotel bookings?

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

  • How can I find direct flights from San Diego to Allentown?

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

  • Can I find deals for business class flights from San Diego to Allentown?

    Yes. Cheapflights offers flight deals from San Diego 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 San Diego to Allentown?

    Currently, February is the cheapest month in which you can book a flight from San Diego to Allentown (average of $289). Flying from San Diego to Allentown in December is currently the most expensive (average of $382). 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 3 airlines flying from San Diego to Allentown

Discover the top 3 airlines that operate flights from San Diego 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$458FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$382Average$539FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$393Average$523FlexibilityNo cancel feeOn-time69%

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