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$195+ Cheap flights from Allentown to San Diego (ABE - SAN)

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 6/29. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SAN
Apr 29 — May 61
Wed 4/29
Wed 5/6
1 adult, Economy
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Cheap flight deals from Allentown to San Diego

Cheapest flights from Allentown to San Diego
Explore the most affordable flight options available from Allentown to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 30, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Fri 5/151:41 pm
ABE
-
SAN
2 stops31h 44m
Multiple Airlines
Fri 5/229:37 am
SAN
-
ABE
1 stop10h 27m
Multiple Airlines
Deal found 3/27$367
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 5/181:41 pm
ABE
-
SAN
2 stops31h 18m
Multiple Airlines
Fri 5/229:37 am
SAN
-
ABE
1 stop10h 27m
Multiple Airlines
Deal found 3/28$383
This Delta deal was found by Cheapflights users on 3/29. 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
-
SAN
1 stop8h 26m
Delta
Tue 5/56:15 am
SAN
-
ABE
1 stop8h 04m
Delta
Deal found 3/29$389
This United Airlines deal was found by Cheapflights users on 3/28. 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 6/32:23 pm
ABE
-
SAN
2 stops12h 31m
United Airlines
Sat 6/1310:40 pm
SAN
-
ABE
1 stop7h 58m
United Airlines
Deal found 3/28$394
This United Airlines deal was found by Cheapflights users on 3/27. 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 9/3010:38 am
ABE
-
SAN
2 stops9h 32m
United Airlines
Mon 10/57:44 pm
SAN
-
ABE
2 stops11h 22m
United Airlines
Deal found 3/27$399
This Delta deal was found by Cheapflights users on 3/28. 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 5/286:15 pm
ABE
-
SAN
1 stop8h 12m
Delta
Sat 5/306:15 am
SAN
-
ABE
1 stop8h 13m
Delta
Deal found 3/28$400
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 5/147:56 pm
ABE
-
SAN
2 stops39h 46m
Multiple Airlines
Fri 5/229:37 am
SAN
-
ABE
1 stop10h 27m
Multiple Airlines
Deal found 3/27$401
This United Airlines deal was found by Cheapflights users on 3/27. 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 5/285:36 pm
ABE
-
SAN
1 stop7h 58m
United Airlines
Sat 5/3010:40 pm
SAN
-
ABE
1 stop7h 58m
United Airlines
Deal found 3/27$407
This American Airlines deal was found by Cheapflights users on 3/29. 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.
Tue 4/286:00 am
ABE
-
SAN
1 stop8h 08m
American Airlines
Tue 5/59:28 am
SAN
-
ABE
2 stops11h 00m
American Airlines
Deal found 3/29$416
This United Airlines deal was found by Cheapflights users on 3/25. 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 7/102:23 pm
ABE
-
SAN
2 stops12h 31m
United Airlines
Fri 7/1710:40 pm
SAN
-
ABE
1 stop7h 58m
United Airlines
Deal found 3/25$417
This United Airlines deal was found by Cheapflights users on 3/28. 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 9/52:30 pm
ABE
-
SAN
2 stops10h 57m
United Airlines
Sun 9/2010:40 pm
SAN
-
ABE
1 stop8h 26m
United Airlines
Deal found 3/28$418

Find flight deals from Allentown to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to San Diego (SAN). 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 March 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$367
(Kiwi.com)

One-way from

$195
(Kiwi.com)

Popular in

November

Cheapest in

September

Average price

$485
Provider with most accurate pricing for Allentown-Bethlehem-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-San Diego flights.
Search Deals
From Allentown-Bethlehem to San Diego
Search Deals
One-way flight from Allentown-Bethlehem to San Diego
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($167 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to San Diego 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 March 30, 2026.
Use the filters below to find and compare flights from Allentown to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Thu 5/28

5:36 pm-10:34 pm

1 stop7h 58m

San Diego

Sat 5/30

10:40 pm-9:38 am

1 stop7h 58m

$407

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Fri 4/10

5:43 pm-10:59 pm

1 stop8h 16m

San Diego

Tue 4/14

10:30 pm-9:48 am

1 stop8h 18m

$449

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Wed 8/5

2:23 pm-11:54 pm

2 stops12h 31m

San Diego

Mon 8/10

10:40 pm-10:06 am

1 stop8h 26m

$458

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Fri 5/29

5:36 pm-10:34 pm

1 stop7h 58m

San Diego

Thu 6/4

10:40 pm-9:38 am

1 stop7h 58m

$499

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Tue 7/28

2:23 pm-11:54 pm

2 stops12h 31m

San Diego

Sat 8/1

10:40 pm-9:38 am

1 stop7h 58m

$504

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Fri 4/17

5:43 pm-10:59 pm

1 stop8h 16m

San Diego

Mon 4/20

10:30 pm-9:48 am

1 stop8h 18m

$529
Cheapest one-way

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Mon 6/29

4:39 pm-6:46 pm

2 stops29h 07m

$235

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Fri 6/26

8:47 pm-3:32 pm

3 stops21h 45m

$277
Quickest one-way

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Tue 6/16

6:09 pm-11:00 pm

1 stop7h 51m

$278

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

Sun 5/3

5:59 pm-11:25 pm

1 stop8h 26m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from Allentown to San Diego

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 San Diego in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Allentown-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Allentown-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Allentown-San Diego 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-San Diego 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 San Diego

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

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

Currently, September is the cheapest month in which you can book a flight from Allentown to San Diego (average of $131). Flying from Allentown to San Diego in November is currently the most expensive (average of $237). 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 San Diego?

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated March 30, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Allentown to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,359 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

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
7.9
Good
8,359 reviews
Delta
7.9
Good
8,359 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

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
9,514 reviews
Delta
7.9
Good
8,359 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

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
7.1
Good
11,530 reviews
Delta
7.9
Good
8,359 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

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

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

    There are many flights that can get you from Allentown to San Diego in 7h 58m. Fly via United Airlines to get the fastest option. The distance from Allentown to San Diego is about 2353 mi.

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

    Delta, at $236, was found to be the cheapest airline from Allentown to San Diego.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Delta is 57% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $168. Users have also found prices from $198 and $208 on United Airlines and American Airlines, respectively.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Allentown to San Diego (average of $131). Flying from Allentown to San Diego in November is currently the most expensive (average of $237). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Allentown to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Allentown to San Diego

Discover the top 3 airlines that operate flights from Allentown to San Diego. 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 March 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$236Average$477FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$313Average$434FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$361Average$518FlexibilityNo cancel feeOn-time71%

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