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$212+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — SAN
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This American Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 2/285:00 am
PIA
-
SAN
1 stop9h 41m
American Airlines
Mon 3/210:35 pm
SAN
-
PIA
1 stop8h 50m
American Airlines
Deal found 2/2$309
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 2/286:35 am
PIA
-
SAN
1 stop7h 03m
United Airlines
Mon 3/27:50 pm
SAN
-
PIA
2 stops12h 21m
United Airlines
Deal found 2/2$314
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Fri 3/61:25 pm
PIA
-
SAN
1 stop7h 35m
United Airlines
Mon 3/162:11 pm
SAN
-
PIA
1 stop6h 09m
United Airlines
Deal found 2/1$322
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 3/78:00 am
PIA
-
SAN
2 stops11h 26m
United Airlines
Mon 3/162:11 pm
SAN
-
PIA
1 stop6h 09m
United Airlines
Deal found 2/2$327
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Mon 2/235:23 pm
PIA
-
SAN
1 stop7h 07m
American Airlines
Thu 3/510:45 pm
SAN
-
PIA
1 stop8h 35m
American Airlines
Deal found 2/3$334
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 3/175:15 am
PIA
-
SAN
1 stop11h 08m
American Airlines
Fri 3/2010:35 pm
SAN
-
PIA
1 stop11h 43m
American Airlines
Deal found 2/2$335
This American Airlines deal was found by Cheapflights users on 2/3. 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 4/31:17 pm
PIA
-
SAN
1 stop10h 26m
American Airlines
Fri 4/1010:40 pm
SAN
-
PIA
1 stop12h 12m
American Airlines
Deal found 2/3$345
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 2/173:10 pm
PIA
-
SAN
1 stop7h 10m
American Airlines
Sat 2/216:20 am
SAN
-
PIA
1 stop5h 57m
American Airlines
Deal found 2/2$359
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/76:35 am
PIA
-
SAN
1 stop7h 03m
United Airlines
Sun 3/158:50 pm
SAN
-
PIA
2 stops11h 13m
United Airlines
Deal found 2/1$370
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/42:51 pm
PIA
-
SAN
1 stop9h 53m
United Airlines
Wed 3/1111:28 am
SAN
-
PIA
1 stop7h 11m
United Airlines
Deal found 2/1$399
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 2/232:51 pm
PIA
-
SAN
2 stops10h 49m
United Airlines
Thu 3/52:11 pm
SAN
-
PIA
1 stop6h 09m
United Airlines
Deal found 2/2$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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(United Airlines)

One-way from

$212
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$381
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 ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 3, 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

Sat 3/7

5:25 pm-10:40 pm

1 stop7h 15m

San Diego

Mon 3/16

2:11 pm-10:20 pm

1 stop6h 09m

$309

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Sat 2/28

6:35 am-11:38 am

1 stop7h 03m

San Diego

Mon 3/2

7:50 pm-10:11 am

2 stops12h 21m

$314

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Fri 3/6

1:25 pm-7:00 pm

1 stop7h 35m

San Diego

Mon 3/16

2:11 pm-10:20 pm

1 stop6h 09m

$322

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Mon 2/23

5:23 pm-10:30 pm

1 stop7h 07m

San Diego

Thu 3/5

1:37 pm-11:56 pm

1 stop8h 19m

$334

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Fri 4/3

1:17 pm-9:43 pm

1 stop10h 26m

San Diego

Fri 4/10

10:40 pm-12:52 pm

1 stop12h 12m

$345

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Tue 2/17

3:10 pm-8:20 pm

1 stop7h 10m

San Diego

Sat 2/21

6:20 am-2:17 pm

1 stop5h 57m

$359

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Sat 3/7

6:35 am-11:38 am

1 stop7h 03m

San Diego

Sun 3/15

8:50 pm-10:03 am

2 stops11h 13m

$370

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Wed 3/4

2:51 pm-10:44 pm

1 stop9h 53m

San Diego

Wed 3/11

11:28 am-8:39 pm

1 stop7h 11m

$399

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Wed 3/18

1:17 pm-10:40 pm

1 stop11h 23m

$212

PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Wed 3/18

8:55 pm-4:13 pm

2 stops45h 18m

$276

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 11 results
1
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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 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 FlightHub the most. FlightHub 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 30, 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 February 3, 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
9,229 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

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
9,229 reviews
United Airlines
7.4
Good
9,229 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

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
11,212 reviews
United Airlines
7.4
Good
9,229 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

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 7h 15m. 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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Alternative routes for Peoria to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$458FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$370FlexibilityNo cancel feeOn-time71%

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