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$209+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ABE
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$403
(American Airlines)

One-way from

$209
(Delta)

Popular in

November

Cheapest in

March

Average price

$539
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. 12% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 30, 2025.

This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:22 pmSAN - ABE
1 stop6h 59mAmerican Airlines
Wed 12/31:44 pmABE - SAN
1 stop7h 47mAmerican Airlines
Deal found 6/30$403
This Delta deal was found by Cheapflights users on 6/28. 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 8/1410:47 amSAN - ABE
1 stop9h 10mDelta
Sun 8/176:14 pmABE - SAN
1 stop8h 07mDelta
Deal found 6/28$548
This United Airlines deal was found by Cheapflights users on 6/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/279:05 amSAN - ABE
2 stops9h 36mUnited Airlines
Wed 12/35:22 pmABE - SAN
1 stop7h 48mUnited Airlines
Deal found 6/30$573
This Mytrip deal was found by Cheapflights users on 6/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/52:30 pmSAN - ABE
2 stops25h 57mMultiple Airlines
Tue 7/83:27 pmABE - SAN
2 stops21h 28mMultiple Airlines
Deal found 6/30$668

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 June 30, 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 11/26

2:22 pm-12:21 am

1 stop6h 59m

Allentown-Bethlehem

Wed 12/3

6:12 am-11:06 am

1 stop7h 54m

$403

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Thu 8/14

10:47 am-10:57 pm

1 stop9h 10m

Allentown-Bethlehem

Sun 8/17

6:14 pm-11:21 pm

1 stop8h 07m

$548

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Thu 11/27

9:05 am-9:41 pm

2 stops9h 36m

Allentown-Bethlehem

Wed 12/3

5:22 pm-10:10 pm

1 stop7h 48m

$573

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Tue 7/22

11:00 am-10:30 pm

1 stop8h 30m

$209

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Wed 11/26

2:22 pm-12:21 am

1 stop6h 59m

$238

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Wed 11/26

5:15 pm-4:47 pm

3 stops20h 32m

$329

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Sat 7/5

2:30 pm-7:27 pm

2 stops25h 57m

$416

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

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 $291). Flying from San Diego to Allentown in December is currently the most expensive (average of $395). 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.

What is the cheapest time of day to fly from SAN to ABE?

Find hourly flight availability from San Diego to Allentown. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 30, 2025.

One of the essential ways to save on airfare from San Diego to Allentown is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 21% on airfare.

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 June 30, 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
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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.

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

    Flying on American Airlines is currently your cheapest option to Allentown, with prices starting at $403. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $548 and $573, respectively. Users have found that American Airlines is 17% 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 $209 on Delta. Other airlines that offer cheap prices include American Airlines from $238 and United Airlines from $329 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, February is the cheapest month in which you can book a flight from San Diego to Allentown (average of $291). Flying from San Diego to Allentown in December is currently the most expensive (average of $395). 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$272Average$498FlexibilityNo cancel feeOn-time71%
DeltaCheapest$318Average$488FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$403Average$538FlexibilityNo cancel feeOn-time69%

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