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Allentown

$210+ Cheap flights from San Francisco to Allentown (SFO - 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ABE
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap flight deals from San Francisco to Allentown

Cheapest flights from San Francisco to Allentown
Explore the most affordable flight options available from San Francisco to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.

This Delta deal was found by Cheapflights users on 1/19. 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 3/1711:35 pm
SFO
-
ABE
1 stop9h 41m
Delta
Sun 9/61:00 pm
ABE
-
SFO
1 stop9h 24m
Delta
Deal found 1/19$309
This Delta deal was found by Cheapflights users on 1/19. 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 3/1711:35 pm
SFO
-
ABE
1 stop9h 41m
Delta
Thu 9/36:30 am
ABE
-
SFO
1 stop8h 11m
Delta
Deal found 1/19$319
This American Airlines deal was found by Cheapflights users on 1/18. 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 2/119:00 am
SFO
-
ABE
1 stop10h 26m
American Airlines
Wed 4/812:00 pm
ABE
-
SFO
1 stop11h 11m
American Airlines
Deal found 1/18$341
This Delta deal was found by Cheapflights users on 1/19. 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 3/1711:35 pm
SFO
-
ABE
1 stop9h 41m
Delta
Fri 9/41:00 pm
ABE
-
SFO
1 stop9h 24m
Delta
Deal found 1/19$349
This Delta deal was found by Cheapflights users on 1/19. 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 2/311:40 am
SFO
-
ABE
1 stop8h 10m
Delta
Sat 2/72:00 pm
ABE
-
SFO
1 stop10h 55m
Delta
Deal found 1/19$389
This American Airlines deal was found by Cheapflights users on 1/19. 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 2/39:10 am
SFO
-
ABE
2 stops10h 16m
American Airlines
Sat 2/77:30 am
ABE
-
SFO
1 stop9h 20m
American Airlines
Deal found 1/19$394
This Delta deal was found by Cheapflights users on 1/19. 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 3/1711:35 pm
SFO
-
ABE
1 stop9h 41m
Delta
Sat 9/51:00 pm
ABE
-
SFO
2 stops13h 46m
Delta
Deal found 1/19$407
This United Airlines deal was found by Cheapflights users on 1/19. 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 4/2311:52 pm
SFO
-
ABE
1 stop7h 06m
United Airlines
Mon 4/275:38 pm
ABE
-
SFO
1 stop9h 41m
United Airlines
Deal found 1/19$412
This American Airlines deal was found by Cheapflights users on 1/19. 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 3/61:17 pm
SFO
-
ABE
1 stop8h 12m
American Airlines
Fri 3/1312:00 pm
ABE
-
SFO
1 stop8h 48m
American Airlines
Deal found 1/19$424

Find flight deals from San Francisco to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$309
(Delta)

One-way from

$210
(Delta)

Popular in

November

Cheapest in

January

Average price

$298
Provider with most accurate pricing for San Francisco-Allentown-Bethlehem flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Allentown-Bethlehem flights.
Search Deals
From San Francisco to Allentown-Bethlehem
Search Deals
One-way flight from San Francisco to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 42% potential increase in price ($462 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 33% potential price decrease ($155 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco 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 20, 2026.
Use the filters below to find and compare flights from San Francisco to Allentown that are best for you.

Fly from

San Francisco

Fly to

Allentown

Route

Depart

Return

Price

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Tue 3/17

11:35 pm-12:16 pm

1 stop9h 41m

Allentown-Bethlehem

Sat 9/5

6:30 am-11:41 am

1 stop8h 11m

$309

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Tue 3/17

11:35 pm-12:16 pm

1 stop9h 41m

Allentown-Bethlehem

Thu 9/3

6:30 am-11:41 am

1 stop8h 11m

$319

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 2/11

9:00 am-10:26 pm

1 stop10h 26m

Allentown-Bethlehem

Wed 4/8

12:00 pm-8:11 pm

1 stop11h 11m

$341

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Tue 3/17

11:35 pm-12:16 pm

1 stop9h 41m

Allentown-Bethlehem

Mon 9/7

5:40 pm-12:02 am

1 stop9h 22m

$349

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Tue 3/17

11:35 pm-12:16 pm

1 stop9h 41m

Allentown-Bethlehem

Fri 9/4

5:40 pm-8:26 am

2 stops17h 46m

$376

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Tue 3/17

11:35 pm-12:16 pm

1 stop9h 41m

Allentown-Bethlehem

Sun 9/6

6:30 am-5:50 pm

2 stops14h 20m

$387

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Tue 2/3

9:10 am-10:26 pm

2 stops10h 16m

Allentown-Bethlehem

Sat 2/7

7:30 am-1:50 pm

1 stop9h 20m

$394

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Thu 4/23

11:52 pm-9:58 am

1 stop7h 06m

Allentown-Bethlehem

Mon 4/27

5:38 pm-12:19 am

1 stop9h 41m

$412

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 3/18

10:45 pm-9:56 am

1 stop8h 11m

Allentown-Bethlehem

Wed 9/2

11:50 am-6:26 pm

1 stop9h 36m

$429

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 3/18

11:59 pm-9:56 am

1 stop6h 57m

Allentown-Bethlehem

Sat 9/5

5:32 pm-12:34 am

1 stop10h 02m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 21 results
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Compare providers for flights from San Francisco 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 Francisco to Allentown in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 San Francisco-Allentown flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Allentown flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Allentown flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Allentown flights, Cheapflights users trust Expedia the most. Expedia 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 Francisco-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 Francisco to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from San Francisco 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 Francisco to Allentown

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

Currently, March is the cheapest month in which you can book a flight from San Francisco to Allentown (average of $125). Flying from San Francisco to Allentown in September is currently the most expensive (average of $226). 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 20, 2026.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from San Francisco to Allentown by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,077 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

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
8,077 reviews
Delta
7.9
Good
8,077 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

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
9,180 reviews
Delta
7.9
Good
8,077 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

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
11,164 reviews
Delta
7.9
Good
8,077 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

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 Francisco 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 Francisco to Allentown?

    Departing from San Francisco to Allentown will take you 9h 41m. The distance between San Francisco and Allentown is about 2493 mi. This flight may include one or multiple stops.

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

    Our cheapest airline available from San Francisco to Allentown is American Airlines. Our recent data shows that you can find tickets from as low as $289 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $308 and $338 round-trip. American Airlines is 53% cheaper than the average price of flights available within the next 90 days to this destination.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $114. United Airlines flights start at $156 while deals on Delta start at $168 one-way.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from San Francisco to Allentown (average of $125). Flying from San Francisco to Allentown in September is currently the most expensive (average of $226). 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 Francisco to Allentown

Discover the top 3 airlines that operate flights from San Francisco 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 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$289Average$460FlexibilityNo cancel feeOn-time71%
DeltaCheapest$308Average$453FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$338Average$568FlexibilityNo cancel feeOn-time69%

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