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

Delta, at $403, was found to be the cheapest airline from Allentown to San Francisco.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Delta is currently priced 7% 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 $210 on Delta. Other airlines that offer cheap prices include American Airlines from $222 and United Airlines from $320 one-way.

What is the cheapest day to fly from Allentown to San Francisco?

Travelers seeking maximum savings on their Allentown to San Francisco flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

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

What is the cheapest day to fly round-trip from Allentown to San Francisco?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 58% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Allentown to San Francisco?

To save up to 115% on this flight, we recommend booking at least 39 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Allentown to San Francisco from $412 1-2 weeks out and tickets from $448 for flights departing within the next 72 hours.

What is the cheapest month to fly from Allentown to San Francisco?

The best pricing can be found in the month of November. Prices to San Francisco from Allentown average $437. You can even find prices in November for less than $437, as users have found deals to San Francisco from as low as $193. The month of April appears to be one of the more expensive times to travel to San Francisco from Allentown. Flying in the targeted month can save you up to 27%.

Most accurate provider : When it comes to deals on Allentown-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-San Francisco flight deals on Cheapflights vs. FlightHub >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.

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.

$210+ Flights from Allentown to San Francisco

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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

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Cheapflights Tip: The best prices from Allentown-Bethlehem to San Francisco are usually found in November or February, booked 75 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Allentown to San Francisco

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$403 (Delta)
One-way from	$210 (Delta)
Popular in	April
Cheapest in	November
Average price	$557

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. 3% potential increase in price ($13 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

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Find 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 avril 29, 2025.

mar. 7/112:57 pmABE - SFO

1 stop8h 50mDelta

jeu. 7/106:15 amSFO - ABE

1 stop8h 09mDelta

Deal found 4/29

$403

lun. 6/306:15 amABE - SFO

1 stop8h 54mAmerican Airlines

ven. 7/117:10 amSFO - ABE

1 stop9h 23mAmerican Airlines

Deal found 4/29

$466

mer. 5/146:37 amABE - SFO

1 stop7h 59mUnited Airlines

dim. 5/185:04 amSFO - ABE

1 stop8h 53mUnited Airlines

Deal found 4/28

$540

jeu. 5/226:15 amABE - SFO

2 stops32h 29mMultiple Airlines

ven. 5/2311:59 pmSFO - ABE

2 stops20h 24mMultiple Airlines

Deal found 4/29

$626

Best flights from Allentown to San Francisco
Discover carefully curated flight deals from Allentown to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated avril 29, 2025.

mar. 7/112:57 pmABE - SFO

1 stop8h 50mDelta

jeu. 7/106:15 amSFO - ABE

1 stop8h 09mDelta

Deal found 4/29

$403

lun. 6/306:15 amABE - SFO

1 stop8h 54mAmerican Airlines

ven. 7/117:10 amSFO - ABE

1 stop9h 23mAmerican Airlines

Deal found 4/29

$466

mer. 5/146:37 amABE - SFO

1 stop7h 59mUnited Airlines

dim. 5/185:04 amSFO - ABE

1 stop8h 53mUnited Airlines

Deal found 4/28

$540

jeu. 5/226:15 amABE - SFO

2 stops32h 29mMultiple Airlines

ven. 5/2311:59 pmSFO - ABE

2 stops20h 24mMultiple Airlines

Deal found 4/29

$626

Last-minute flights from Allentown to San Francisco
Discover last-minute flight deals from Allentown to San Francisco. Data last updated avril 29, 2025 and is based on user searches.

ven. 5/91:12 pmABE - SFO

1 stop9h 57mDelta

mar. 5/1311:59 pmSFO - ABE

1 stop9h 33mDelta

Deal found 4/29

$438

ven. 5/95:27 pmABE - SFO

1 stop8h 34mAmerican Airlines

mar. 5/1312:13 pmSFO - ABE

2 stops9h 27mAmerican Airlines

Deal found 4/29

$494

ven. 5/95:32 pmABE - SFO

1 stop9h 27mUnited Airlines

lun. 5/1212:10 amSFO - ABE

1 stop13h 47mUnited Airlines

Deal found 4/29

$838

mer. 5/146:37 amABE - SFO

1 stop7h 59mUnited Airlines

dim. 5/185:04 amSFO - ABE

1 stop8h 53mUnited Airlines

Deal found 4/28

$540

jeu. 5/226:15 amABE - SFO

2 stops32h 29mMultiple Airlines

ven. 5/2311:59 pmSFO - ABE

2 stops20h 24mMultiple Airlines

Deal found 4/29

$626

ven. 5/235:27 pmABE - SFO

1 stop8h 34mAmerican Airlines

dim. 5/2511:26 amSFO - ABE

2 stops10h 14mAmerican Airlines

Deal found 4/29

$479

One-way flights from Allentown to San Francisco
Search for one-way flight options from Allentown to San Francisco. Find affordable one-way fares based on user searches. Data last updated avril 29, 2025.

mar. 5/205:50 pmABE - SFO

1 stop8h 09mDelta

Deal found 4/29

$210

sam. 5/245:27 pmABE - SFO

1 stop8h 34mAmerican Airlines

Deal found 4/29

$222

jeu. 7/175:35 pmABE - SFO

1 stop9h 55mUnited Airlines

Deal found 4/29

$320

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

mar. 7/1

12:57 pm-6:47 pm

1 stop8h 50m

San Francisco

jeu. 7/10

6:15 am-5:24 pm

1 stop8h 09m

$403

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

lun. 6/30

6:15 am-12:09 pm

1 stop8h 54m

San Francisco

ven. 7/11

7:10 am-7:33 pm

1 stop9h 23m

$466

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

mer. 5/14

6:37 am-11:36 am

1 stop7h 59m

San Francisco

dim. 5/18

5:04 am-4:57 pm

1 stop8h 53m

$540

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

jeu. 5/22

6:15 am-11:44 am

2 stops32h 29m

San Francisco

ven. 5/23

11:59 pm-11:23 pm

2 stops20h 24m

$626

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

mar. 5/20

5:50 pm-10:59 pm

1 stop8h 09m

$210

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

sam. 5/24

5:27 pm-11:01 pm

1 stop8h 34m

$222

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

jeu. 7/17

5:35 pm-12:30 am

1 stop9h 55m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Compare providers for flights from Allentown to San Francisco

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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy2 stars	Trust 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 Allentown-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-San Francisco flight deals on Cheapflights vs. FlightHub >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

How far ahead should I book a flight from Allentown to San Francisco?

The price you pay for your flight from Allentown to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Allentown to San Francisco (average of $276). Flying from Allentown to San Francisco in June is currently the most expensive (average of $393). 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?

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 at noon could potentially save you up to 41% on airfare.

Rainfall in San Francisco by month

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

To help decide which airline to fly from Allentown to San Francisco, see what other customers have to say about Delta, United Airlines and American Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,929 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

8.0

Very good

7,929 reviews

Delta

8.0

Very good

7,929 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

8,696 reviews

Delta

8.0

Very good

7,929 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

10,000 reviews

Delta

8.0

Very good

7,929 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

What are the cheapest airlines flying from Allentown to San Francisco round-trip?
Delta, at $403, was found to be the cheapest airline from Allentown to San Francisco.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Delta is currently priced 7% 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 $210 on Delta. Other airlines that offer cheap prices include American Airlines from $222 and United Airlines from $320 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, January is the cheapest month in which you can book a flight from Allentown to San Francisco (average of $276). Flying from Allentown to San Francisco in June is currently the most expensive (average of $393). 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

Roseville

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Santa Cruz

Livermore

South San Francisco

Turlock

Manteca

Fairfield

Richmond

Watsonville

Hollister

Newark

Milpitas

Antioch

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Hayward

Alameda

Sunnyvale

Campbell

Daly City

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Allentown to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$203	Average$613	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$266	Average$377	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$276	Average$413	FlexibilityNo cancel fee	On-time71%

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$210+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Allentown to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Allentown-Bethlehem to San Francisco are usually found in November or February, booked 75 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Allentown to San Francisco

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Allentown to San Francisco

Cheapest flights from Allentown to San FranciscoExplore 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 avril 29, 2025.

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 avril 29, 2025.

Cheapflights Fare Finder

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

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 April.

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.

Cheapflights Insights

Everything you need to know about your flight from Allentown to San Francisco

How far ahead should I book a flight from Allentown to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Allentown to San Francisco. Price data was last updated on April 25, 2025.

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

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 avril 29, 2025.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

Reviews of airlines servicing San Francisco

To help decide which airline to fly from Allentown to San Francisco, see what other customers have to say about Delta, United Airlines and American Airlines. 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 Francisco. 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 Allentown to San Francisco round-trip?

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

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

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

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

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

Traveling to a place near Allentown?

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Alternative routes for Allentown to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Allentown to San Francisco

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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 avril 29, 2025.