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Allentown

$189+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ABE
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
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 March 11, 2026.

This Delta deal was found by Cheapflights users on 3/10. 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.
Mon 8/2411:45 pm
SFO
-
ABE
1 stop9h 23m
Delta
Sun 8/306:30 am
ABE
-
SFO
1 stop8h 11m
Delta
Deal found 3/10$349
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Sat 5/161:16 pm
SFO
-
ABE
1 stop8h 06m
American Airlines
Sat 5/234:55 pm
ABE
-
SFO
1 stop9h 52m
American Airlines
Deal found 3/10$369
This Delta deal was found by Cheapflights users on 3/10. 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.
Wed 8/2611:30 am
SFO
-
ABE
1 stop8h 26m
Delta
Sun 8/301:00 pm
ABE
-
SFO
1 stop9h 24m
Delta
Deal found 3/10$373
This United Airlines deal was found by Cheapflights users on 3/10. 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 5/1612:45 am
SFO
-
ABE
1 stop9h 53m
United Airlines
Sat 5/232:23 pm
ABE
-
SFO
1 stop9h 55m
United Airlines
Deal found 3/10$381
This Delta deal was found by Cheapflights users on 3/10. 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.
Mon 8/2411:45 pm
SFO
-
ABE
1 stop9h 23m
Delta
Fri 8/286:30 am
ABE
-
SFO
1 stop9h 51m
Delta
Deal found 3/10$397
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Sat 5/161:16 pm
SFO
-
ABE
1 stop8h 06m
American Airlines
Wed 5/2012:00 pm
ABE
-
SFO
1 stop11h 12m
American Airlines
Deal found 3/10$419
This United Airlines deal was found by Cheapflights users on 3/7. 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 4/2310:50 pm
SFO
-
ABE
1 stop7h 58m
United Airlines
Mon 4/275:43 pm
ABE
-
SFO
1 stop10h 52m
United Airlines
Deal found 3/7$438
This Delta deal was found by Cheapflights users on 3/10. 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.
Fri 4/1710:35 pm
SFO
-
ABE
1 stop10h 37m
Delta
Mon 4/205:59 pm
ABE
-
SFO
1 stop8h 56m
Delta
Deal found 3/10$442
This United Airlines deal was found by Cheapflights users on 3/8. 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 4/2210:50 pm
SFO
-
ABE
1 stop7h 58m
United Airlines
Tue 4/2810:35 am
ABE
-
SFO
1 stop9h 37m
United Airlines
Deal found 3/8$449
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Mon 8/245:15 am
SFO
-
ABE
1 stop10h 50m
American Airlines
Sat 8/291:56 pm
ABE
-
SFO
2 stops12h 01m
American Airlines
Deal found 3/10$454
This American Airlines deal was found by Cheapflights users on 3/8. 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 5/1212:30 am
SFO
-
ABE
1 stop7h 57m
American Airlines
Tue 5/1912:57 pm
ABE
-
SFO
1 stop11h 07m
American Airlines
Deal found 3/8$456

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(Delta)

One-way from

$189
(Delta)

Popular in

November

Cheapest in

January

Average price

$413
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. 46% potential increase in price ($497 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 37% potential price decrease ($159 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 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 March 11, 2026.
Use the filters below to find and compare flights from San Francisco to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Sat 5/16

12:45 am-1:38 pm

1 stop9h 53m

Allentown-Bethlehem

Sat 5/23

2:23 pm-9:18 pm

1 stop9h 55m

$381

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Thu 4/23

10:50 pm-9:48 am

1 stop7h 58m

Allentown-Bethlehem

Mon 4/27

5:43 pm-1:35 am

1 stop10h 52m

$438

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Fri 4/17

10:35 pm-12:12 pm

1 stop10h 37m

Allentown-Bethlehem

Mon 4/20

5:59 pm-11:55 pm

1 stop8h 56m

$442

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Fri 7/17

11:30 pm-10:03 am

1 stop7h 33m

Allentown-Bethlehem

Wed 7/22

2:23 pm-9:18 pm

1 stop9h 55m

$489
Quickest round-trip

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Sat 5/16

11:26 am-10:18 pm

1 stop7h 52m

Allentown-Bethlehem

Tue 5/19

6:27 am-11:48 am

1 stop8h 21m

$534

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Fri 7/31

6:28 pm-12:10 pm

2 stops14h 42m

Allentown-Bethlehem

Thu 8/6

6:30 am-1:40 pm

1 stop10h 10m

$564

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Tue 8/11

5:41 pm-10:06 am

2 stops13h 25m

Allentown-Bethlehem

Sat 8/15

10:38 am-6:44 pm

1 stop11h 06m

$568

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Tue 4/7

6:00 am-5:17 pm

1 stop8h 17m

Allentown-Bethlehem

Wed 4/8

6:32 am-12:49 pm

1 stop9h 17m

$589

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Fri 7/31

6:28 pm-12:10 pm

2 stops14h 42m

Allentown-Bethlehem

Tue 8/11

1:00 pm-7:24 pm

1 stop9h 24m

$594

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Fri 5/1

8:58 pm-5:00 pm

2 stops17h 02m

Allentown-Bethlehem

Sun 5/3

6:15 am-12:50 am

1 stop21h 35m

$609

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 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 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 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 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, June is the cheapest month in which you can book a flight from San Francisco to Allentown (average of $138). Flying from San Francisco to Allentown in September is currently the most expensive (average of $224). 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 March 11, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican 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
8,278 reviews

Food

7.2

Entertainment

7.8

Crew

8.5

Overall

7.9

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
8,278 reviews
Delta
7.9
Good
8,278 reviews

Food

7.2

Entertainment

7.8

Crew

8.5

Overall

7.9

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
9,413 reviews
Delta
7.9
Good
8,278 reviews

Food

7.2

Entertainment

7.8

Crew

8.5

Overall

7.9

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
7.1
Good
11,421 reviews
Delta
7.9
Good
8,278 reviews

Food

7.2

Entertainment

7.8

Crew

8.5

Overall

7.9

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 7h 58m. 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 50% 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, June is the cheapest month in which you can book a flight from San Francisco to Allentown (average of $138). Flying from San Francisco to Allentown in September is currently the most expensive (average of $224). 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 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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$289Average$438FlexibilityNo cancel feeOn-time71%
DeltaCheapest$308Average$428FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$338Average$659FlexibilityNo cancel feeOn-time69%

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