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$107+ 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — SAN
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$332
(Kiwi.com)

One-way from

$107
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$453
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. 12% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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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 November 3, 2025.

This American Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 11/186:00 amPIA - SAN
1 stop8h 33mAmerican Airlines
Sat 11/223:08 pmSAN - PIA
1 stop6h 41mAmerican Airlines
Deal found 11/3$359
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/181:20 pmPIA - SAN
1 stop7h 30mUnited Airlines
Sat 11/2210:00 pmSAN - PIA
2 stops10h 16mUnited Airlines
Deal found 11/3$364
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/43:30 pmPIA - SAN
1 stop9h 00mUnited Airlines
Fri 12/54:11 pmSAN - PIA
1 stop26h 45mUnited Airlines
Deal found 11/2$417
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:09 pmPIA - SAN
2 stops12h 05mMultiple Airlines
Thu 11/136:00 pmSAN - PIA
1 stop24h 47mMultiple Airlines
Deal found 11/3$422
This American Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 12/236:07 amPIA - SAN
1 stop8h 16mAmerican Airlines
Thu 1/16:15 amSAN - PIA
1 stop7h 35mAmerican Airlines
Deal found 11/3$473
This American Airlines deal was found by Cheapflights users on 11/3. 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.
Fri 11/74:26 pmPIA - SAN
1 stop7h 54mAmerican Airlines
Wed 11/128:25 amSAN - PIA
1 stop8h 26mAmerican Airlines
Deal found 11/3$484
This American Airlines deal was found by Cheapflights users on 11/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:45 amPIA - SAN
1 stop9h 20mAmerican Airlines
Mon 11/1012:50 pmSAN - PIA
2 stops8h 59mAmerican Airlines
Deal found 11/2$489
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/153:30 pmPIA - SAN
1 stop8h 50mUnited Airlines
Sat 11/2210:00 pmSAN - PIA
2 stops12h 39mUnited Airlines
Deal found 11/3$499

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 November 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

Thu 1/1

5:19 pm-10:51 pm

1 stop7h 32m

San Diego

Mon 1/5

8:45 pm-10:10 am

2 stops11h 25m

$362

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Thu 1/1

5:00 am-11:05 am

1 stop8h 05m

San Diego

Sun 1/11

12:32 pm-9:43 pm

1 stop7h 11m

$372

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Wed 2/18

11:12 am-3:57 pm

1 stop6h 45m

San Diego

Sat 2/21

1:37 pm-11:52 pm

1 stop8h 15m

$379

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Fri 2/27

2:51 pm-11:40 pm

2 stops10h 49m

San Diego

Wed 3/4

12:55 pm-9:12 pm

1 stop6h 17m

$384

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Wed 1/14

3:00 pm-12:15 am

2 stops11h 15m

San Diego

Mon 1/19

10:40 pm-12:38 pm

2 stops11h 58m

$389

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Mon 2/23

1:25 pm-11:40 pm

2 stops12h 15m

San Diego

Thu 3/5

9:55 pm-12:43 pm

2 stops12h 48m

$389

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Wed 2/18

10:51 am-10:00 pm

2 stops13h 09m

San Diego

Sat 2/21

6:15 am-4:50 pm

2 stops8h 35m

$389

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Fri 12/12

3:08 pm-11:59 pm

1 stop10h 51m

$107

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Fri 12/12

5:15 pm-8:48 pm

3 stops29h 33m

$328

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Sat 1/3

5:19 pm-10:51 pm

1 stop7h 32m

$388

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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 Peoria, Illinois-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Peoria, Illinois-San Diego flight deals on Cheapflights vs. eDreams >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 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 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 October 31, 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, 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 March is currently the most expensive (average of $311). 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 November 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
8,997 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

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
8,997 reviews
United Airlines
7.4
Good
8,997 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

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
11,034 reviews
United Airlines
7.4
Good
8,997 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

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 $362, United Airlines can have you in San Diego from Peoria, Illinois in 7h 32m. The distance between Peoria, Illinois and San Diego is about 1610 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $283. Another airline that can offer you cheap pricing is United Airlines. American Airlines is priced at 35% 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 March is currently the most expensive (average of $311). 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
Coronado
La Mesa
Poway
Lemon Grove
National City

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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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$283Average$425FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$528FlexibilityNo cancel feeOn-time69%

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