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Allentown

$284+ 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ABE
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$487
(Delta)

One-way from

$284
(United Airlines)

Popular in

January

Cheapest in

October

Average price

$664
Provider with most accurate pricing for San Diego-Allentown-Bethlehem flight deals.
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Provider most trusted by Cheapflights users for San Diego-Allentown-Bethlehem flights.
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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. 18% potential increase in price ($106 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 15, 2026.

This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/1610:09 am
SAN
-
ABE
2 stops9h 17m
American Airlines
Tue 1/201:02 pm
ABE
-
SAN
1 stop10h 34m
American Airlines
Deal found 1/15$478
This Delta deal was found by Cheapflights users on 1/14. 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.
Tue 2/2411:16 am
SAN
-
ABE
1 stop8h 33m
Delta
Fri 2/2712:47 pm
ABE
-
SAN
1 stop10h 50m
Delta
Deal found 1/14$487
This United Airlines deal was found by Cheapflights users on 1/14. 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.
Thu 1/298:37 pm
SAN
-
ABE
2 stops11h 04m
United Airlines
Mon 2/24:57 pm
ABE
-
SAN
1 stop8h 36m
United Airlines
Deal found 1/14$494
This Delta deal was found by Cheapflights users on 1/13. 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.
Fri 1/1611:11 am
SAN
-
ABE
1 stop8h 39m
Delta
Tue 1/2012:50 pm
ABE
-
SAN
1 stop10h 47m
Delta
Deal found 1/13$506
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Thu 1/2910:09 am
SAN
-
ABE
2 stops9h 17m
American Airlines
Mon 2/21:02 pm
ABE
-
SAN
2 stops12h 24m
American Airlines
Deal found 1/14$526
This United Airlines deal was found by Cheapflights users on 1/15. 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 1/178:37 pm
SAN
-
ABE
2 stops11h 04m
United Airlines
Tue 1/2011:30 am
ABE
-
SAN
2 stops15h 12m
United Airlines
Deal found 1/15$561
This United Airlines deal was found by Cheapflights users on 1/14. 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.
Tue 2/247:50 pm
SAN
-
ABE
2 stops11h 11m
United Airlines
Fri 2/2710:36 am
ABE
-
SAN
2 stops16h 04m
United Airlines
Deal found 1/14$568
This American Airlines deal was found by Cheapflights users on 1/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/1610:09 am
SAN
-
ABE
2 stops9h 17m
American Airlines
Mon 1/191:02 pm
ABE
-
SAN
1 stop10h 34m
American Airlines
Deal found 1/13$589

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 January 15, 2026.
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

Tue 2/24

11:16 am-10:49 pm

1 stop8h 33m

Allentown-Bethlehem

Fri 2/27

12:47 pm-8:37 pm

1 stop10h 50m

$487

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Thu 1/29

8:37 pm-10:41 am

2 stops11h 04m

Allentown-Bethlehem

Mon 2/2

4:57 pm-10:33 pm

1 stop8h 36m

$494

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Thu 1/29

10:09 am-10:26 pm

2 stops9h 17m

Allentown-Bethlehem

Mon 2/2

1:02 pm-10:26 pm

2 stops12h 24m

$526

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Tue 2/24

7:50 pm-10:01 am

2 stops11h 11m

Allentown-Bethlehem

Fri 2/27

10:36 am-11:40 pm

2 stops16h 04m

$568

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Mon 2/16

6:10 pm-10:01 am

2 stops12h 51m

$284

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Sun 4/19

10:40 pm-9:58 am

1 stop8h 18m

$329

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Fri 4/3

6:15 am-5:17 pm

1 stop8h 02m

$438

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Mon 4/20

6:15 am-5:19 pm

1 stop8h 04m

$568

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Fri 4/3

6:36 am-9:17 pm

2 stops11h 41m

$780

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Compare providers for flights from San Diego 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 San Diego to Allentown in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 San Diego-Allentown flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Allentown flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Diego-Allentown flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-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 San Diego-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 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, June is the cheapest month in which you can book a flight from San Diego to Allentown (average of $78). Flying from San Diego to Allentown in January is currently the most expensive (average of $182). 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 January 15, 2026.
Read reviews from past customers who have flown Delta 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
7.9
Good
8,051 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

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
7.9
Good
8,051 reviews
Delta
7.9
Good
8,051 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

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
11,136 reviews
Delta
7.9
Good
8,051 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

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, United Airlines, and American Airlines fly from San Diego to Allentown in about 8h 33m. The time it takes to get you to your destination can typically vary by up to 2h 31m. 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. Another option worth looking into is American Airlines, starting at $310 round trip. Users have found that Delta is 33% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from San Diego to Allentown one-way?

    One-way options have recently been found by users for as low as $178 on Delta. Other airlines that offer cheap prices include United Airlines from $189 and American Airlines from $201 one-way.

  • 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, June is the cheapest month in which you can book a flight from San Diego to Allentown (average of $78). Flying from San Diego to Allentown in January is currently the most expensive (average of $182). 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 San Diego to Allentown

Discover the top 2 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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$418FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$310Average$495FlexibilityNo cancel feeOn-time71%

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