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$289+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — SAN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$289
(American Airlines)

Popular in

February

Cheapest in

August

Average price

$386
From Greater Peoria to San Diego
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($118 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 July 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 July 3, 2025.

This American Airlines deal was found by Cheapflights users on 7/3. 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.
Wed 9/35:11 pmPIA - SAN
1 stop7h 25mAmerican Airlines
Wed 9/1010:10 amSAN - PIA
1 stop9h 26mAmerican Airlines
Deal found 7/3$289
This United Airlines deal was found by Cheapflights users on 7/2. 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 10/163:56 pmPIA - SAN
1 stop8h 18mUnited Airlines
Mon 10/202:11 pmSAN - PIA
1 stop6h 04mUnited Airlines
Deal found 7/2$353
This Mytrip deal was found by Cheapflights users on 7/3. 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.
Wed 7/98:39 pmPIA - SAN
1 stop15h 16mMultiple Airlines
Fri 7/115:00 pmSAN - PIA
2 stops24h 12mMultiple Airlines
Deal found 7/3$390

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 July 3, 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

Fri 11/7

4:53 pm-10:53 pm

1 stop8h 00m

San Diego

Wed 11/12

6:16 am-3:48 pm

1 stop7h 32m

$289

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Thu 8/14

5:25 pm-10:44 pm

1 stop7h 19m

San Diego

Mon 8/18

10:00 pm-10:13 am

2 stops10h 13m

$294

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Thu 7/17

2:16 pm-5:55 pm

3 stops29h 39m

San Diego

Mon 7/21

7:00 pm-6:21 pm

3 stops21h 21m

$509

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Thu 7/17

5:00 am-10:41 am

1 stop7h 41m

$765

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Thu 7/17

9:00 am-10:12 am

2 stops27h 12m

$1,103

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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 27, 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.

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 July 3, 2025.
See what other customers who have flown with United Airlines and American Airlines from Peoria to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,861 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.0

Food

6.6

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
8,861 reviews
United Airlines
7.4
Good
8,861 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.0

Food

6.6

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
8,861 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.0

Food

6.6

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 32% 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
Coronado
National City
Lemon Grove
Imperial Beach
La Mesa
Poway
Alpine
Santee

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$283Average$431FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$448FlexibilityNo cancel feeOn-time69%

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