HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco

$179+ Cheap flights from Allentown to San Francisco (ABE - SFO)

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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SFO
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown to San Francisco 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 Allentown to San Francisco

Cheapest flights from Allentown to San Francisco
Explore the most affordable flight options available from Allentown to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/10. 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.
Thu 12/182:30 pmABE - SFO
1 stop11h 25mUnited Airlines
Tue 12/305:00 amSFO - ABE
1 stop8h 30mUnited Airlines
Deal found 12/10$440
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Tue 12/161:48 pmABE - SFO
1 stop11h 21mAmerican Airlines
Sat 1/1011:36 pmSFO - ABE
1 stop9h 56mAmerican Airlines
Deal found 12/10$459
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Tue 12/161:00 pmABE - SFO
1 stop11h 29mUnited Airlines
Wed 12/315:00 amSFO - ABE
1 stop8h 30mUnited Airlines
Deal found 12/10$494
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Thu 12/182:30 pmABE - SFO
1 stop11h 25mUnited Airlines
Wed 12/315:00 amSFO - ABE
1 stop8h 30mUnited Airlines
Deal found 12/10$509
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Mon 12/226:17 amABE - SFO
1 stop8h 53mUnited Airlines
Fri 1/25:00 amSFO - ABE
1 stop8h 30mUnited Airlines
Deal found 12/11$516
This Delta deal was found by Cheapflights users on 12/10. 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.
Tue 12/166:25 amABE - SFO
1 stop9h 11mDelta
Wed 12/316:00 amSFO - ABE
2 stops13h 46mDelta
Deal found 12/10$537
This Delta deal was found by Cheapflights users on 12/10. 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 12/156:00 pmABE - SFO
1 stop9h 20mDelta
Wed 12/3112:11 pmSFO - ABE
1 stop7h 35mDelta
Deal found 12/10$543
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Wed 12/245:07 pmABE - SFO
2 stops21h 53mUnited Airlines
Wed 12/315:00 amSFO - ABE
1 stop8h 30mUnited Airlines
Deal found 12/10$552
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Tue 12/166:30 amABE - SFO
1 stop8h 19mUnited Airlines
Tue 12/305:00 amSFO - ABE
1 stop8h 30mUnited Airlines
Deal found 12/10$559
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Mon 12/226:17 amABE - SFO
1 stop8h 53mUnited Airlines
Mon 1/511:05 pmSFO - ABE
1 stop8h 36mUnited Airlines
Deal found 12/10$564

Find flight deals from Allentown to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to San Francisco (SFO). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$309
(United Airlines)

One-way from

$179
(Delta)

Popular in

December

Cheapest in

May

Average price

$510
Provider with most accurate pricing for Allentown-Bethlehem-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-San Francisco flights.
Search Deals
From Allentown-Bethlehem to San Francisco
Search Deals
One-way flight from Allentown-Bethlehem to San Francisco
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to San Francisco 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 December 12, 2025.
Use the filters below to find and compare flights from Allentown to San Francisco that are best for you.

Fly from

Allentown

Fly to

San Francisco

Route

Depart

Return

Price

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Wed 2/11

11:30 am-7:09 pm

1 stop10h 39m

San Francisco

Mon 2/23

11:59 pm-10:01 am

1 stop7h 02m

$309

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Wed 2/11

1:02 pm-9:37 pm

2 stops11h 35m

San Francisco

Sun 2/22

12:29 am-11:31 am

1 stop8h 02m

$314

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Mon 2/2

5:59 pm-11:25 pm

1 stop8h 26m

San Francisco

Wed 2/4

6:00 am-5:14 pm

1 stop8h 14m

$357

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Wed 4/22

5:32 pm-12:04 am

1 stop9h 32m

San Francisco

Mon 4/27

10:50 pm-10:08 am

1 stop8h 18m

$359

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Sat 1/10

6:15 am-2:07 pm

1 stop10h 52m

San Francisco

Sat 1/24

11:15 pm-10:41 am

1 stop8h 26m

$409

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Thu 1/8

6:15 am-2:07 pm

1 stop10h 52m

San Francisco

Mon 1/12

11:56 pm-10:41 am

1 stop7h 45m

$409

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Sat 2/14

2:55 pm-9:20 pm

1 stop9h 25m

San Francisco

Sat 2/21

10:50 pm-10:01 am

1 stop8h 11m

$409

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Sat 1/31

11:30 am-7:09 pm

1 stop10h 39m

San Francisco

Wed 2/4

11:15 pm-10:41 am

1 stop8h 26m

$409

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Fri 2/6

12:48 pm-11:30 pm

2 stops13h 42m

San Francisco

Tue 2/10

6:00 am-10:50 pm

2 stops13h 50m

$430

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Wed 2/11

12:48 pm-11:30 pm

2 stops13h 42m

San Francisco

Mon 2/23

8:03 pm-12:05 pm

2 stops13h 02m

$430

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 20 results
1
2

Compare providers for flights from Allentown to San Francisco

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 Francisco in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 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 Allentown-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Allentown-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Allentown-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Allentown-San Francisco 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 Francisco 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 Francisco

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

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

Currently, December is the cheapest month in which you can book a flight from Allentown to San Francisco (average of $110). Flying from Allentown to San Francisco 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 SFO?

Find hourly flight availability from Allentown to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

One of the essential ways to save on airfare from Allentown to San Francisco is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 65% on airfare.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated December 12, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Allentown to San Francisco 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
8,008 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

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
8,008 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

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
9,095 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

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
11,050 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

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

Find useful and relevant information for your journey from Allentown to San Francisco. 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 Francisco?

    For as low as $357, United Airlines can have you in San Francisco from Allentown in 8h 26m. There are 2493 mi between Allentown and San Francisco. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Delta, at $269, was found to be the cheapest airline from Allentown to San Francisco.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Delta is currently priced 35% below the average price you’ll pay for this route.

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

    One-way options have recently been found by users for as low as $158 on American Airlines. Other airlines that offer cheap prices include Delta from $168 and United Airlines from $195 one-way.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Allentown to San Francisco (average of $110). Flying from Allentown to San Francisco 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.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Sunnyvale
Santa Clara
San Bruno
Redwood City
Daly City
Vallejo
Hollister
Foster City
Union City
Davis
San Ramon
Burlingame
Milpitas

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.

Alternative routes for Allentown to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
Newark to Los Angeles flights
Newark to Las Vegas flights
John F Kennedy Intl to San Francisco flights
Dulles Intl to Las Vegas flights
LaGuardia to Las Vegas flights
LaGuardia to Los Angeles flights
Reagan-National to Los Angeles flights
Dulles Intl to Los Angeles flights
Newark to San Francisco flights
Reagan-National to Las Vegas flights
LaGuardia to San Francisco flights
Philadelphia to Las Vegas flights
John F Kennedy Intl to San Diego flights
LaGuardia to Burbank flights
Newark to San Diego flights
Philadelphia to Los Angeles flights
Dulles Intl to San Francisco flights
John F Kennedy Intl to Ontario flights
Reagan-National to San Francisco flights
Newark to Ontario flights
Dulles Intl to San Diego flights
Philadelphia to San Francisco flights
John F Kennedy Intl to Santa Ana flights
Dulles Intl to Ontario flights
LaGuardia to Santa Ana flights
Reagan-National to Ontario flights
Pittsburgh to Las Vegas flights
LaGuardia to San Diego flights
Newark to Santa Ana flights
LaGuardia to Ontario flights
Reagan-National to San Diego flights
Newark to Palm Springs flights
Philadelphia to San Diego flights
John F Kennedy Intl to Palm Springs flights
Philadelphia to Ontario flights
Reagan-National to Santa Ana flights
John F Kennedy Intl to San Jose flights
John F Kennedy Intl to Reno flights
John F Kennedy Intl to Burbank flights
Dulles Intl to Santa Ana flights
LaGuardia to Palm Springs flights
Pittsburgh to Los Angeles flights
Newark to San Jose flights
Newark to Sacramento flights
Dulles Intl to Palm Springs flights
Newark to Reno flights
Dulles Intl to San Jose flights
Pittsburgh to San Francisco flights

Top 3 airlines flying from Allentown to San Francisco

Discover the top 3 airlines that operate flights from Allentown to San Francisco. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$269Average$368FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$311Average$474FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$313Average$412FlexibilityNo 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.