HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Allentown

$240+ 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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ABE
apr 9 — apr 161
gio 4/9
gio 4/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Allentown 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 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 marzo 10, 2026.

This United Airlines deal was found by Cheapflights users on 3/6. 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.
mar 4/2110:30 pm
SAN
-
ABE
1 stop8h 18m
United Airlines
mer 4/295:43 pm
ABE
-
SAN
1 stop8h 16m
United Airlines
Deal found 3/6$349
This American Airlines deal was found by Cheapflights users on 3/6. 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.
sab 5/161:31 pm
SAN
-
ABE
1 stop7h 51m
American Airlines
mar 5/196:00 am
ABE
-
SAN
1 stop10h 13m
American Airlines
Deal found 3/6$426
This American Airlines deal was found by Cheapflights users on 3/6. 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.
sab 5/306:15 am
SAN
-
ABE
1 stop7h 04m
American Airlines
mar 6/25:06 pm
ABE
-
SAN
1 stop9h 33m
American Airlines
Deal found 3/6$431
This United Airlines deal was found by Cheapflights users on 3/6. 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.
sab 3/76:30 am
SAN
-
ABE
2 stops11h 20m
United Airlines
mar 3/246:20 am
ABE
-
SAN
1 stop8h 18m
United Airlines
Deal found 3/6$435
This Delta deal was found by Cheapflights users on 3/6. 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.
sab 3/76:30 am
SAN
-
ABE
1 stop7h 42m
Delta
mar 3/245:58 pm
ABE
-
SAN
1 stop8h 11m
Delta
Deal found 3/6$452
This United Airlines deal was found by Cheapflights users on 3/9. 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.
sab 5/3010:40 pm
SAN
-
ABE
1 stop7h 58m
United Airlines
mar 6/22:23 pm
ABE
-
SAN
2 stops12h 31m
United Airlines
Deal found 3/9$454
This Delta deal was found by Cheapflights users on 3/6. 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.
sab 3/76:30 am
SAN
-
ABE
1 stop7h 42m
Delta
sab 3/145:58 pm
ABE
-
SAN
1 stop8h 11m
Delta
Deal found 3/6$461
This United Airlines deal was found by Cheapflights users on 3/6. 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.
sab 5/166:32 am
SAN
-
ABE
2 stops11h 28m
United Airlines
mar 5/196:15 am
ABE
-
SAN
1 stop8h 10m
United Airlines
Deal found 3/6$465

Find 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 marzo 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(United Airlines)

One-way from

$240
(Kiwi.com)

Popular in

January

Cheapest in

October

Average price

$450
Provider with most accurate pricing for San Diego-Allentown-Bethlehem flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Allentown-Bethlehem flights.
Search Deals
From San Diego to Allentown-Bethlehem
Search Deals
One-way flight from San Diego to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($21 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 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 marzo 10, 2026.
Use the filters below to find and compare flights from San Diego to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoAllentown

SAN - ABE

SANABE

San Diego

mar 4/21

6:20 pm-9:48 am

2 stops12h 28m

Allentown-Bethlehem

mer 4/29

5:43 pm-10:59 pm

1 stop8h 16m

$354

San DiegoAllentown

SAN - ABE

SANABE

San Diego

ven 5/22

10:40 pm-9:38 am

1 stop7h 58m

Allentown-Bethlehem

mar 5/26

2:23 pm-11:54 pm

2 stops12h 31m

$435

San DiegoAllentown

SAN - ABE

SANABE

San Diego

mer 4/22

10:30 pm-9:48 am

1 stop8h 18m

Allentown-Bethlehem

sab 4/25

6:15 am-6:40 pm

2 stops15h 25m

$454
Quickest round-trip

San DiegoAllentown

SAN - ABE

SANABE

San Diego

sab 5/30

8:32 pm-9:38 am

2 stops10h 06m

Allentown-Bethlehem

mar 6/2

5:36 pm-10:34 pm

1 stop7h 58m

$454

San DiegoAllentown

SAN - ABE

SANABE

San Diego

sab 5/2

7:00 am-5:00 pm

1 stop7h 00m

Allentown-Bethlehem

mar 5/5

2:25 pm-10:37 pm

2 stops11h 12m

$454
Cheapest one-way

San DiegoAllentown

SAN - ABE

SANABE

San Diego

sab 4/18

6:15 am-5:19 pm

1 stop8h 04m

$296

San DiegoAllentown

SAN - ABE

SANABE

San Diego

mer 6/24

10:40 pm-10:03 am

1 stop8h 23m

$323
Quickest one-way

San DiegoAllentown

SAN - ABE

SANABE

San Diego

ven 4/17

6:20 am-5:03 pm

1 stop7h 43m

$346

San DiegoAllentown

SAN - ABE

SANABE

San Diego

dom 4/12

10:30 pm-9:48 am

1 stop8h 18m

$346

San DiegoAllentown

SAN - ABE

SANABE

San Diego

sab 4/18

6:36 am-9:17 pm

2 stops11h 41m

$351

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 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 San Diego-Allentown flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Allentown flight deals on Cheapflights vs. FlightHub >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 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 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 April is currently the most expensive (average of $200). 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 marzo 10, 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
8,276 reviews

Comfort

7.9

Food

7.2

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

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
8,276 reviews
Delta
7.9
Good
8,276 reviews

Comfort

7.9

Food

7.2

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

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
7.1
Good
11,414 reviews
Delta
7.9
Good
8,276 reviews

Comfort

7.9

Food

7.2

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

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 United Airlines fly from San Diego to Allentown in about 12h 28m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 2353 mi.

  • 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 35% 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 April is currently the most expensive (average of $200). 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

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.

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 marzo 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$475FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$310Average$486FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights