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$280+ Cheap flights from Peoria, IL to San Diego (PIA - SAN)

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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — SAN
Feb 24 — Mar 31
Tue 2/24
Tue 3/3
1 adult, Economy
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Cheap 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 January 25, 2026.

This American Airlines deal was found by Cheapflights users on 1/22. 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.
Thu 4/236:54 pm
PIA
-
SAN
1 stop6h 22m
American Airlines
Tue 4/281:03 pm
SAN
-
PIA
1 stop7h 55m
American Airlines
Deal found 1/22$309
This United Airlines deal was found by Cheapflights users on 1/24. 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 3/45:25 pm
PIA
-
SAN
1 stop7h 19m
United Airlines
Sun 3/88:50 pm
SAN
-
PIA
2 stops11h 13m
United Airlines
Deal found 1/24$314
This Kiwi.com deal was found by Cheapflights users on 1/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2612:18 pm
PIA
-
SAN
1 stop28h 07m
Multiple Airlines
Wed 4/2912:29 pm
SAN
-
PIA
1 stop20h 59m
Multiple Airlines
Deal found 1/23$317
This United Airlines deal was found by Cheapflights users on 1/22. 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 4/231:20 pm
PIA
-
SAN
2 stops8h 52m
United Airlines
Tue 4/2811:00 am
SAN
-
PIA
2 stops8h 08m
United Airlines
Deal found 1/22$320
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Mon 2/235:23 pm
PIA
-
SAN
1 stop7h 07m
American Airlines
Thu 3/52:18 pm
SAN
-
PIA
1 stop6h 37m
American Airlines
Deal found 1/25$334
This United Airlines deal was found by Cheapflights users on 1/23. 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.
Sat 2/76:30 am
PIA
-
SAN
1 stop7h 18m
United Airlines
Wed 2/1111:10 am
SAN
-
PIA
1 stop7h 37m
United Airlines
Deal found 1/23$359
This American Airlines deal was found by Cheapflights users on 1/24. 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.
Thu 3/55:00 am
PIA
-
SAN
1 stop11h 29m
American Airlines
Mon 3/910:35 pm
SAN
-
PIA
1 stop12h 12m
American Airlines
Deal found 1/24$385
This United Airlines deal was found by Cheapflights users on 1/23. 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 2/232:51 pm
PIA
-
SAN
1 stop9h 53m
United Airlines
Thu 3/510:15 pm
SAN
-
PIA
2 stops12h 28m
United Airlines
Deal found 1/23$404

Find 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 January 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$309
(American Airlines)

One-way from

$280
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$454
Provider with most accurate pricing for Greater Peoria-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Greater Peoria-San Diego flights.
Search Deals
From Greater Peoria to San Diego
Search Deals
One-way flight from Greater Peoria to San Diego
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 25, 2026.
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

Wed 4/29

6:30 am-11:25 am

1 stop6h 55m

San Diego

Wed 5/6

10:40 pm-9:59 am

1 stop9h 19m

$309

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Thu 4/23

1:20 pm-8:12 pm

2 stops8h 52m

San Diego

Tue 4/28

6:20 am-4:44 pm

1 stop8h 24m

$314

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Sun 4/26

12:18 pm-2:25 pm

1 stop28h 07m

San Diego

Wed 4/29

12:29 pm-11:28 am

1 stop20h 59m

$317

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Wed 3/4

2:59 pm-8:20 pm

1 stop7h 21m

San Diego

Sun 3/8

3:19 pm-11:25 pm

1 stop6h 06m

$334

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Mon 2/23

5:23 pm-10:30 pm

1 stop7h 07m

San Diego

Thu 3/5

3:19 pm-11:25 pm

1 stop6h 06m

$334

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Sat 2/7

6:30 am-11:48 am

1 stop7h 18m

San Diego

Wed 2/11

11:10 am-8:47 pm

1 stop7h 37m

$359

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Thu 3/5

5:00 am-2:29 pm

1 stop11h 29m

San Diego

Mon 3/9

10:35 pm-12:47 pm

1 stop12h 12m

$385

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Sat 1/31

6:25 pm-8:51 am

3 stops40h 26m

$280

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Sat 1/31

10:45 am-3:36 pm

1 stop6h 51m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Compare providers for flights from Peoria to San Diego

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 Peoria to San Diego in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 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 Peoria, Illinois-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Peoria, Illinois-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Peoria, Illinois-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Peoria, Illinois-San Diego flights, Cheapflights users trust Expedia the most. Expedia 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 Peoria, Illinois-San Diego 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 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 January 23, 2026.

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, July is the cheapest month in which you can book a flight from Peoria, Illinois to San Diego (average of $121). Flying from Peoria, Illinois to San Diego in December is currently the most expensive (average of $302). 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 January 25, 2026.
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
9,198 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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
9,198 reviews
United Airlines
7.4
Good
9,198 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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
11,197 reviews
United Airlines
7.4
Good
9,198 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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.

  • How long is the flight from Peoria, Illinois to San Diego?

    For as low as $309, United Airlines can have you in San Diego from Peoria, Illinois in 6h 55m. The distance between Peoria, Illinois and San Diego is about 1610 mi.

  • 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 $288. Another airline that can offer you cheap pricing is United Airlines. American Airlines is priced at 31% 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, July is the cheapest month in which you can book a flight from Peoria, Illinois to San Diego (average of $121). Flying from Peoria, Illinois to San Diego in December is currently the most expensive (average of $302). 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 Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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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 January 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$458FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$369FlexibilityNo cancel feeOn-time71%

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