What are the cheapest airlines flying from Philadelphia to San Luis Obispo round-trip?

Flying on Alaska Airlines is currently your cheapest option to San Luis Obispo, with prices starting at $409. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $425 and $560, respectively. Alaska Airlines is 25% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from Philadelphia to San Luis Obispo?

Travelers seeking maximum savings on their Philadelphia to San Luis Obispo flight should consider departing on Saturday mornings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in San Luis Obispo ranges from 0.0 - 4.0 inches per month. December is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit San Luis Obispo when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Luis Obispo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What is the cheapest day to fly round-trip from Philadelphia to San Luis Obispo?

Departing on a Friday is a good option for securing a great price. You can expect to save up to 45% when planning your travel around this day of the week.

What is the cheapest month to fly from Philadelphia to San Luis Obispo?

March is one of the best times of the year to fly to San Luis Obispo from Philadelphia. Prices for March average $551 per person but you can even find prices for as low as $376. The most expensive prices can be found in the month of December. Opting for a March flight can save you 37% on your journey compared to booking in December

What is the cheapest time of day to fly from PHL to SBP?

When flying from Philadelphia to San Luis Obispo, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 14% versus a flight in the afternoon.

Can I find deals for flights from Philadelphia to San Luis Obispo that include hotel bookings?

Yes. In addition to deals on Philadelphia to San Luis Obispo flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Philadelphia to San Luis Obispo?

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

Can I find deals for business class flights from Philadelphia to San Luis Obispo?

Yes. Cheapflights offers flight deals from Philadelphia to San Luis Obispo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$409+ Flights from Philadelphia to San Luis Obispo

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Cheap flight deals from Philadelphia to San Luis Obispo

Round-trip from	$409 (Alaska Airlines)
Popular in	December
Cheapest in	March
Average price	$520

From Philadelphia to San Luis Obispo County

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($53 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

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Find flight deals from Philadelphia to San Luis Obispo

Cheapest flights from Philadelphia to San Luis Obispo
Explore the most affordable flight options available from Philadelphia to San Luis Obispo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Tue 9/307:22 amPHL - SBP

1 stop13h 15mAlaska Airlines

Tue 10/76:00 amSBP - PHL

2 stops20h 40mAlaska Airlines

Deal found 6/30

$409

Tue 9/307:00 amPHL - SBP

1 stop8h 03mAmerican Airlines

Tue 10/712:38 pmSBP - PHL

1 stop7h 32mAmerican Airlines

Deal found 6/30

$425

Sat 7/266:30 amPHL - SBP

2 stops12h 21mUnited Airlines

Wed 7/306:00 pmSBP - PHL

1 stop8h 26mUnited Airlines

Deal found 6/29

$560

Best flights from Philadelphia to San Luis Obispo
Discover carefully curated flight deals from Philadelphia to San Luis Obispo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2025.

Tue 9/307:22 amPHL - SBP

1 stop13h 15mAlaska Airlines

Tue 10/76:00 amSBP - PHL

2 stops20h 40mAlaska Airlines

Deal found 6/30

$409

Tue 9/307:00 amPHL - SBP

1 stop8h 03mAmerican Airlines

Tue 10/712:38 pmSBP - PHL

1 stop7h 32mAmerican Airlines

Deal found 6/30

$425

Sat 7/266:30 amPHL - SBP

2 stops12h 21mUnited Airlines

Sat 8/26:00 pmSBP - PHL

1 stop8h 40mUnited Airlines

Deal found 6/29

$560

Last-minute flights from Philadelphia to San Luis Obispo
Discover last-minute flight deals from Philadelphia to San Luis Obispo. Data last updated July 2, 2025 and is based on user searches.

Sat 7/266:30 amPHL - SBP

2 stops12h 21mUnited Airlines

Wed 7/306:00 pmSBP - PHL

1 stop8h 26mUnited Airlines

Deal found 6/29

$560

Mon 8/187:15 amPHL - SBP

1 stop7h 45mAmerican Airlines

Sat 8/2312:18 pmSBP - PHL

1 stop7h 39mAmerican Airlines

Deal found 6/30

$454

Cheapflights Fare Finder

Use the filters below to find and compare flights from Philadelphia to San Luis Obispo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSan Luis Obispo

PHL - SBP

PHLSBP

Philadelphia

Tue 9/30

7:22 am-5:37 pm

1 stop13h 15m

San Luis Obispo County

Tue 10/7

6:00 am-5:40 am

2 stops20h 40m

$409

PhiladelphiaSan Luis Obispo

PHL - SBP

PHLSBP

Philadelphia

Tue 9/30

7:00 am-12:03 pm

1 stop8h 03m

San Luis Obispo County

Tue 10/7

12:38 pm-11:10 pm

1 stop7h 32m

$425

PhiladelphiaSan Luis Obispo

PHL - SBP

PHLSBP

Philadelphia

Sat 7/26

6:30 am-3:51 pm

2 stops12h 21m

San Luis Obispo County

Sat 8/2

6:00 pm-5:40 am

1 stop8h 40m

$560

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Best time to book a flight from Philadelphia to San Luis Obispo

Have a flexible travel schedule? Discover the best time to fly to San Luis Obispo from Philadelphia 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 Philadelphia to San Luis Obispo

What is the cheapest month to book a flight from Philadelphia to San Luis Obispo?

Currently, January is the cheapest month in which you can book a flight from Philadelphia to San Luis Obispo (average of $374). Flying from Philadelphia to San Luis Obispo in June is currently the most expensive (average of $515). 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 San Luis Obispo

Get a feel of what it's like to fly with Alaska Airlines, United Airlines, and American Airlines from Philadelphia to San Luis Obispo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,861 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What are the cheapest airlines flying from Philadelphia to San Luis Obispo round-trip?
Flying on Alaska Airlines is currently your cheapest option to San Luis Obispo, with prices starting at $409. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $425 and $560, respectively. Alaska Airlines is 25% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for flights from Philadelphia to San Luis Obispo that include hotel bookings?
Yes. In addition to deals on Philadelphia to San Luis Obispo flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Philadelphia to San Luis Obispo?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to San Luis Obispo.
Can I find deals for business class flights from Philadelphia to San Luis Obispo?
Yes. Cheapflights offers flight deals from Philadelphia to San Luis Obispo 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 Philadelphia to San Luis Obispo?
Currently, January is the cheapest month in which you can book a flight from Philadelphia to San Luis Obispo (average of $374). Flying from Philadelphia to San Luis Obispo in June is currently the most expensive (average of $515). 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 airline flying from Philadelphia to San Luis Obispo

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$376	Average$522	FlexibilityNo cancel fee	On-time71%

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$409+ Cheap flights from Philadelphia to San Luis Obispo (PHL - SBP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Philadelphia to San Luis Obispo with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Philadelphia to San Luis Obispo

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Philadelphia to San Luis Obispo

Cheapest flights from Philadelphia to San Luis ObispoExplore the most affordable flight options available from Philadelphia to San Luis Obispo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Explore the most affordable flight options available from Philadelphia to San Luis Obispo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Philadelphia to San Luis Obispo that are best for you.

Best time to book a flight from Philadelphia to San Luis Obispo

Have a flexible travel schedule? Discover the best time to fly to San Luis Obispo from Philadelphia with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to San Luis Obispo

What is the cheapest month to book a flight from Philadelphia to San Luis Obispo?

Reviews of airlines servicing San Luis Obispo

Get a feel of what it's like to fly with Alaska Airlines, United Airlines, and American Airlines from Philadelphia to San Luis Obispo by reading reviews from past customers. Users have also rated airlines 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 Philadelphia to San Luis Obispo. 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 Philadelphia to San Luis Obispo round-trip?

Can I find deals for flights from Philadelphia to San Luis Obispo that include hotel bookings?

How can I find direct flights from Philadelphia to San Luis Obispo?

Can I find deals for business class flights from Philadelphia to San Luis Obispo?

What is the cheapest month to book a flight from Philadelphia to San Luis Obispo?

Traveling to a place near Philadelphia?

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Alternative routes for Philadelphia to San Luis Obispo

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Top airline flying from Philadelphia to San Luis Obispo

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Travel Smart

Cheapest flights from Philadelphia to San Luis Obispo
Explore the most affordable flight options available from Philadelphia to San Luis Obispo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.