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$215+ Cheap flights from Peoria, IL to San Diego (PIA - SAN)

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — SAN
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Greater Peoria to San Diego are usually found in August or April, booked 41 days in advance, depart on a Thursday or Wednesday and return on a Saturday

Cheap flight deals from Peoria to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Peoria (PIA) to San Diego (SAN). 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 junio 12, 2025.

Round-trip from

$215
(Mytrip)

Popular in

February

Cheapest in

August

Average price

$483
From Greater Peoria to San Diego
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Peoria to San Diego

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

This Mytrip deal was found by Cheapflights users on 6/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/98:39 pmPIA - SAN
1 stop26h 06mMultiple Airlines
mié. 7/166:15 amSAN - PIA
1 stop11h 34mMultiple Airlines
Deal found 6/9$215
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/36:54 amPIA - SAN
1 stop7h 09mAmerican Airlines
mié. 9/107:00 amSAN - PIA
1 stop7h 38mAmerican Airlines
Deal found 6/11$289
This United Airlines deal was found by Cheapflights users on 6/12. 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.
jue. 7/33:39 pmPIA - SAN
1 stop9h 05mUnited Airlines
dom. 7/69:50 pmSAN - PIA
2 stops10h 29mUnited Airlines
Deal found 6/12$384

Cheapflights Fare Finder

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

Fly from

Peoria

Fly to

San Diego

Route

Depart

Return

Price

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

mié. 7/9

8:39 pm-8:45 pm

1 stop26h 06m

San Diego

mié. 7/16

6:15 am-7:49 pm

1 stop11h 34m

$215

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

mié. 9/3

6:54 am-12:03 pm

1 stop7h 09m

San Diego

mié. 9/10

7:00 am-4:38 pm

1 stop7h 38m

$289

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

jue. 7/3

3:39 pm-10:44 pm

1 stop9h 05m

San Diego

dom. 7/6

8:44 pm-10:19 am

2 stops11h 35m

$384

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

dom. 6/22

5:25 pm-10:14 pm

1 stop6h 49m

$633

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Peoria to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Peoria 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 Peoria to San Diego

How far ahead should I book a flight from Peoria, Illinois to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Peoria to San Diego. Price data was last updated on June 9, 2025.

The best time to book flights from Peoria, Illinois to San Diego is 40 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Peoria, Illinois to San Diego?

Currently, August is the cheapest month in which you can book a flight from Peoria, Illinois to San Diego (average of $286). Flying from Peoria, Illinois to San Diego in March is currently the most expensive (average of $366). 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.

Rainfall in San Diego by month

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

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

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

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 Diego. Reviews last updated junio 12, 2025.
Read reviews from past customers who have flown United Airlines and American Airlines from Peoria to San Diego. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,790 reviews

Overall

7.4

Entertainment

7.0

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
United Airlines
7.4
Good
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Overall

7.4

Entertainment

7.0

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,790 reviews

Overall

7.4

Entertainment

7.0

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

Related info for your journey

Find useful and relevant information for your journey from Peoria to San Diego. 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 Peoria, Illinois to San Diego round-trip?

    Cheapflights users have booked flights from Peoria, Illinois to San Diego round-trip from $289. Another airline that can offer you cheap pricing is United Airlines. American Airlines is priced at 33% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Peoria to San Diego that include hotel bookings?

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

  • How can I find direct flights from Peoria to San Diego?

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

  • Can I find deals for business class flights from Peoria to San Diego?

    Yes. Cheapflights offers flight deals from Peoria to San Diego 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 Peoria, Illinois to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Peoria, Illinois to San Diego (average of $286). Flying from Peoria, Illinois to San Diego in March is currently the most expensive (average of $366). 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 Peoria?

Book flights to Peoria if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado

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Top 2 airlines flying from Peoria to San Diego

Discover the top 2 airlines that operate flights from Peoria to San Diego. 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$263Average$440FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$445FlexibilityNo cancel feeOn-time69%

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