How long is the flight from Allentown to San Diego?

There are many flights that can get you from Allentown to San Diego in 8h 05m. 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?

United Airlines, at $283, was found to be the cheapest airline from Allentown to San Diego.Alternate airlines to your destination round-trip include Delta and American Airlines. United Airlines is 45% 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 $216 on United Airlines and American Airlines, respectively.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

What are the most popular airlines that fly from Allentown to San Diego?

United Airlines, American Airlines and Delta are the most popular airlines when flying from Allentown to San Diego.

Most accurate provider : When it comes to deals on Allentown-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Allentown-San Diego flight deals on Cheapflights vs. eDreams >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 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 Allentown-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$203+ Flights from Allentown to San Diego

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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 diciembre 27, 2025.

dom. 12/286:04 amABE - SAN

1 stop8h 01mAmerican Airlines

sáb. 1/310:01 pmSAN - ABE

1 stop10h 19mAmerican Airlines

Deal found 12/26

$1,237

sáb. 12/276:04 pmABE - SAN

1 stop8h 24mDelta

dom. 1/411:25 amSAN - ABE

1 stop8h 21mDelta

Deal found 12/26

$1,238

dom. 12/285:07 pmABE - SAN

3 stops34h 08mUnited Airlines

sáb. 1/36:55 pmSAN - ABE

2 stops16h 00mUnited Airlines

Deal found 12/26

$1,277

dom. 12/2812:49 pmABE - SAN

2 stops14h 06mDelta

jue. 1/111:25 amSAN - ABE

1 stop8h 21mDelta

Deal found 12/27

$1,538

dom. 12/2812:49 pmABE - SAN

2 stops14h 06mDelta

vie. 1/26:15 amSAN - ABE

1 stop8h 09mDelta

Deal found 12/27

$1,657

dom. 12/2812:49 pmABE - SAN

2 stops14h 06mDelta

sáb. 1/311:25 amSAN - ABE

1 stop8h 21mDelta

Deal found 12/27

$1,787

Best flights from Allentown to San Diego
Discover carefully curated flight deals from Allentown to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 27, 2025.

mar. 3/310:36 amABE - SAN

1 stop8h 05mUnited Airlines

sáb. 3/75:55 pmSAN - ABE

2 stops12h 01mUnited Airlines

Deal found 12/26

$334

sáb. 1/101:02 pmABE - SAN

1 stop10h 34mAmerican Airlines

sáb. 1/177:10 amSAN - ABE

2 stops12h 16mAmerican Airlines

Deal found 12/26

$397

jue. 1/224:57 pmABE - SAN

1 stop8h 36mUnited Airlines

lun. 1/267:52 pmSAN - ABE

2 stops11h 49mUnited Airlines

Deal found 12/26

$334

mié. 1/286:15 amABE - SAN

1 stop8h 33mUnited Airlines

dom. 2/17:52 pmSAN - ABE

2 stops11h 49mUnited Airlines

Deal found 12/26

$364

sáb. 1/106:15 amABE - SAN

1 stop8h 33mUnited Airlines

mié. 1/148:37 pmSAN - ABE

2 stops11h 04mUnited Airlines

Deal found 12/26

$394

mar. 1/276:15 amABE - SAN

1 stop8h 33mUnited Airlines

sáb. 1/3110:52 amSAN - ABE

1 stop7h 13mUnited Airlines

Deal found 12/26

$429

Last-minute flights from Allentown to San Diego
Discover last-minute flight deals from Allentown to San Diego. Data last updated diciembre 27, 2025 and is based on user searches.

sáb. 1/106:15 amABE - SAN

1 stop8h 33mUnited Airlines

mié. 1/148:37 pmSAN - ABE

2 stops11h 04mUnited Airlines

Deal found 12/26

$394

sáb. 1/101:02 pmABE - SAN

1 stop10h 34mAmerican Airlines

sáb. 1/177:10 amSAN - ABE

2 stops12h 16mAmerican Airlines

Deal found 12/26

$397

jue. 1/224:57 pmABE - SAN

1 stop8h 36mUnited Airlines

lun. 1/267:52 pmSAN - ABE

2 stops11h 49mUnited Airlines

Deal found 12/26

$334

sáb. 1/246:15 amABE - SAN

1 stop8h 33mUnited Airlines

mié. 1/287:52 pmSAN - ABE

2 stops11h 49mUnited Airlines

Deal found 12/25

$434

mar. 1/276:15 amABE - SAN

1 stop8h 33mUnited Airlines

sáb. 1/3110:52 amSAN - ABE

1 stop7h 13mUnited Airlines

Deal found 12/26

$429

mié. 1/286:15 amABE - SAN

1 stop8h 33mUnited Airlines

dom. 2/17:52 pmSAN - ABE

2 stops11h 49mUnited Airlines

Deal found 12/26

$364

One-way flights from Allentown to San Diego
Search for one-way flight options from Allentown to San Diego. Find affordable one-way fares based on user searches. Data last updated diciembre 27, 2025.

sáb. 1/172:00 pmABE - SAN

2 stops33h 43mDelta

Deal found 12/26

$203

sáb. 3/712:47 pmABE - SAN

1 stop10h 52mDelta

Deal found 12/27

$229

jue. 1/151:27 pmABE - SAN

3 stops37h 48mMultiple Airlines

Deal found 12/27

$234

jue. 1/12:00 pmABE - SAN

1 stop10h 00mDelta

Deal found 12/27

$243

mar. 1/1312:50 pmABE - SAN

1 stop9h 49mDelta

Deal found 12/26

$265

jue. 1/1512:50 pmABE - SAN

1 stop9h 49mDelta

Deal found 12/26

$279

jue. 1/1511:30 amABE - SAN

2 stops15h 12mUnited Airlines

Deal found 12/27

$284

vie. 1/26:04 pmABE - SAN

1 stop8h 24mDelta

Deal found 12/27

$301

sáb. 1/1711:30 amABE - SAN

3 stops26h 35mUnited Airlines

Deal found 12/26

$307

vie. 1/1612:50 pmABE - SAN

1 stop10h 03mDelta

Deal found 12/26

$309

vie. 1/1611:30 amABE - SAN

2 stops11h 24mUnited Airlines

Deal found 12/26

$314

mar. 1/1311:30 amABE - SAN

2 stops14h 35mUnited Airlines

Deal found 12/26

$320

Find flight deals from Allentown to San Diego

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$329 (United Airlines)
One-way from	$203 (Delta)
Popular in	November
Cheapest in	March
Average price	$691

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. 27% potential increase in price ($198 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease ($42 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

mar. 3/3

10:36 am-3:41 pm

1 stop8h 05m

San Diego

sáb. 3/7

5:55 pm-8:56 am

2 stops12h 01m

$334

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

jue. 1/22

4:57 pm-10:33 pm

1 stop8h 36m

San Diego

lun. 1/26

7:52 pm-10:41 am

2 stops11h 49m

$334

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

mié. 1/28

6:15 am-11:48 am

1 stop8h 33m

San Diego

dom. 2/1

7:52 pm-10:41 am

2 stops11h 49m

$364

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

sáb. 1/10

6:15 am-11:48 am

1 stop8h 33m

San Diego

mié. 1/14

8:37 pm-10:41 am

2 stops11h 04m

$394

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

sáb. 1/10

1:02 pm-8:36 pm

1 stop10h 34m

San Diego

sáb. 1/17

7:10 am-10:26 pm

2 stops12h 16m

$397

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

mar. 1/27

6:15 am-11:48 am

1 stop8h 33m

San Diego

sáb. 1/31

10:52 am-9:05 pm

1 stop7h 13m

$429

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

sáb. 1/17

2:00 pm-8:43 pm

2 stops33h 43m

$203

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

sáb. 3/7

12:47 pm-8:39 pm

1 stop10h 52m

$229

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

jue. 1/15

1:27 pm-12:15 am

3 stops37h 48m

$234

AllentownSan Diego

ABE - SAN

ABESAN

Allentown-Bethlehem

mar. 1/20

12:50 pm-6:51 pm

1 stop9h 01m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 18 results

Compare providers for flights from Allentown to San Diego

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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Allentown-San Diego flight deals on Cheapflights vs. eDreams >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 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 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, December is the cheapest month in which you can book a flight from Allentown to San Diego (average of $84). 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.

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

It’s typically best to fly out from Allentown to San Diego in the evening. Doing so could potentially save you 69% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing San Diego

See what other customers who have flown with Delta, United Airlines, and American 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

8,018 reviews

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

8,018 reviews

Delta

7.9

Good

8,018 reviews

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

9,116 reviews

Delta

7.9

Good

8,018 reviews

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

7.2

Good

11,067 reviews

Delta

7.9

Good

8,018 reviews

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

How long is the flight from Allentown to San Diego?
There are many flights that can get you from Allentown to San Diego in 8h 05m. 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?
United Airlines, at $283, was found to be the cheapest airline from Allentown to San Diego.Alternate airlines to your destination round-trip include Delta and American Airlines. United Airlines is 45% 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 $216 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, December is the cheapest month in which you can book a flight from Allentown to San Diego (average of $84). 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.

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Other flights to San Diego

Top 3 airlines flying from Allentown to San Diego

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$283	Average$395	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$308	Average$552	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$350	Average$524	FlexibilityNo cancel fee	On-time71%

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$203+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Allentown to San Diego with Cheapflights

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Cheap flight deals from Allentown to San Diego

Cheapest flights from Allentown to San DiegoExplore 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 diciembre 27, 2025.

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 diciembre 27, 2025.

Find flight deals from Allentown to San Diego

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Allentown to San Diego that are best for you.

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 December.

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.

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?

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

Reviews of airlines servicing San Diego

See what other customers who have flown with Delta, United Airlines, and American 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.

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?

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

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

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

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

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

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

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Top 3 airlines flying from Allentown to San Diego

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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 diciembre 27, 2025.