$351+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — SAN
Nov 3 — Nov 101
Round-trip
1 adult, Economy
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Find cheap flights from Peoria to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Peoria to San Diego
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Best
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One-way
Cheapest flights from Peoria to San DiegoExplore 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 October 4, 2026.
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 October 4, 2026.
This American Airlines deal was found by Cheapflights users on 9/30. 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 11/184:43 pm -
1 stop9h 13m
Sat 11/213:15 pm -
1 stop5h 56m
Deal found 9/30![American Airlines logo]()
$351
This American Airlines deal was found by Cheapflights users on 9/30. 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 12/412:25 pm -
1 stop8h 42m
Wed 12/97:15 am -
1 stop6h 33m
Deal found 9/30![American Airlines logo]()
$365
This American Airlines deal was found by Cheapflights users on 10/3. 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.
Sat 10/2412:35 pm -
1 stop8h 27m
Sat 10/311:53 pm -
1 stop7h 31m
Deal found 10/3![American Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 10/2. 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 10/248:45 am -
2 stops9h 09m
Sat 10/312:08 pm -
1 stop7h 05m
Deal found 10/2![United Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 9/30. 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 11/184:43 pm -
1 stop9h 13m
Sun 11/223:15 pm -
1 stop5h 56m
Deal found 9/30![American Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 10/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/911:29 am -
2 stops26h 23m
Fri 12/111:02 pm -
1 stop21h 40m
Deal found 10/2![Multiple Airlines logo]()
$406
This American Airlines deal was found by Cheapflights users on 10/2. 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 10/204:42 pm -
1 stop7h 04m
Mon 10/261:53 pm -
1 stop7h 30m
Deal found 10/2![American Airlines logo]()
$411
This American Airlines deal was found by Cheapflights users on 9/30. 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 11/65:37 pm -
1 stop8h 17m
Sun 11/81:29 pm -
1 stop8h 34m
Deal found 9/30![American Airlines logo]()
$414
Best flights from Peoria to San DiegoDiscover carefully curated flight deals from Peoria to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 4, 2026.
Discover carefully curated flight deals from Peoria to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 4, 2026.
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Fri 2/195:00 am -
1 stop8h 17m
Wed 2/247:00 am -
2 stops7h 50m
Deal found 10/3![United Airlines logo]()
$370
This United Airlines deal was found by Cheapflights users on 9/29. 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 1/305:00 am -
1 stop8h 16m
Tue 2/26:50 am -
1 stop8h 10m
Deal found 9/29![United Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 10/4. 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 10/1610:43 am -
2 stops8h 43m
Wed 10/212:07 pm -
1 stop7h 06m
Deal found 10/4![United Airlines logo]()
$496
This United Airlines deal was found by Cheapflights users on 10/4. 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 10/265:30 pm -
1 stop7h 10m
Sat 10/317:30 am -
2 stops11h 43m
Deal found 10/4![United Airlines logo]()
$504
This United Airlines deal was found by Cheapflights users on 10/3. 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 10/276:25 am -
2 stops8h 31m
Sun 11/19:45 pm -
2 stops10h 23m
Deal found 10/3![United Airlines logo]()
$509
This United Airlines deal was found by Cheapflights users on 10/2. 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.
Wed 11/1810:43 am -
2 stops8h 32m
Sun 11/227:41 pm -
2 stops12h 27m
Deal found 10/2![United Airlines logo]()
$530
Last-minute flights from Peoria to San DiegoDiscover last-minute flight deals from Peoria to San Diego. Data last updated October 4, 2026 and is based on user searches.
Discover last-minute flight deals from Peoria to San Diego. Data last updated October 4, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/2. 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 10/204:42 pm -
1 stop7h 04m
Mon 10/261:53 pm -
1 stop7h 30m
Deal found 10/2![American Airlines logo]()
$411
This American Airlines deal was found by Cheapflights users on 10/3. 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.
Sat 10/2412:35 pm -
1 stop8h 27m
Sat 10/311:53 pm -
1 stop7h 31m
Deal found 10/3![American Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 10/2. 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 10/248:45 am -
2 stops9h 09m
Sat 10/312:08 pm -
1 stop7h 05m
Deal found 10/2![United Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 9/30. 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 11/65:37 pm -
1 stop8h 17m
Sun 11/81:29 pm -
1 stop8h 34m
Deal found 9/30![American Airlines logo]()
$414
This American Airlines deal was found by Cheapflights users on 9/30. 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 11/184:43 pm -
1 stop9h 13m
Sat 11/213:15 pm -
1 stop5h 56m
Deal found 9/30![American Airlines logo]()
$351
This American Airlines deal was found by Cheapflights users on 9/30. 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 11/184:43 pm -
1 stop9h 13m
Sun 11/223:15 pm -
1 stop5h 56m
Deal found 9/30![American Airlines logo]()
$400
One-way flights from Peoria to San DiegoSearch for one-way flight options from Peoria to San Diego. Find affordable one-way fares based on user searches. Data last updated October 4, 2026.
Search for one-way flight options from Peoria to San Diego. Find affordable one-way fares based on user searches. Data last updated October 4, 2026.
This American Airlines deal was found by Cheapflights users on 10/3. 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.
Sat 10/104:42 pm -
1 stop7h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![American Airlines logo]()
$476
This United Airlines deal was found by Cheapflights users on 10/3. 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 10/1010:43 am -
2 stops11h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![United Airlines logo]()
$481
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 October 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $341 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $413 |
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 7,457,451 searches. Data last updated October 4, 2026.
Use the filters below to find and compare flights from Peoria to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PeoriaSan Diego
PIA Greater Peoria - SAN San Diego
PIASAN
Greater Peoria
Fri 2/19
5:00 am-11:17 am
1 stop8h 17m
San Diego
Wed 2/24
7:00 am-4:50 pm
2 stops7h 50m
$370
PeoriaSan Diego
PIA Greater Peoria - SAN San Diego
PIASAN
Greater Peoria
Sat 1/30
5:00 am-11:16 am
1 stop8h 16m
San Diego
Tue 2/2
6:50 am-5:00 pm
1 stop8h 10m
$471
Quickest round-trip
PeoriaSan Diego
PIA Greater Peoria - SAN San Diego
PIASAN
Greater Peoria
Sat 10/10
10:43 am-8:08 pm
2 stops11h 25m
San Diego
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$481
PeoriaSan Diego
PIA Greater Peoria - SAN San Diego
PIASAN
Greater Peoria
Fri 10/16
10:43 am-5:26 pm
2 stops8h 43m
San Diego
Wed 10/21
2:07 pm-11:13 pm
1 stop7h 06m
$496
PeoriaSan Diego
PIA Greater Peoria - SAN San Diego
PIASAN
Greater Peoria
Mon 10/26
5:30 pm-10:40 pm
1 stop7h 10m
San Diego
Sat 10/31
7:30 am-9:13 pm
2 stops11h 43m
$504
PeoriaSan Diego
PIA Greater Peoria - SAN San Diego
PIASAN
Greater Peoria
Tue 10/27
6:25 am-12:56 pm
2 stops8h 31m
San Diego
Sun 11/1
9:45 pm-10:08 am
2 stops10h 23m
$509
PeoriaSan Diego
PIA Greater Peoria - SAN San Diego
PIASAN
Greater Peoria
Wed 11/18
10:43 am-5:15 pm
2 stops8h 32m
San Diego
Sun 11/22
7:41 pm-10:08 am
2 stops12h 27m
$530
Sorted by cheapest first
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
PIA-SAN
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
What is the cheapest month to book a flight from Peoria, Illinois to San Diego?
Currently, February is the cheapest month in which you can book a flight from Peoria, Illinois to San Diego (average of $358). Flying from Peoria, Illinois to San Diego in December is currently the most expensive (average of $613). 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.
How much does it cost to fly round-trip from Peoria, Illinois to San Diego?
Airfare is below average for this route at the moment.
Peoria, Illinois to San Diego flights typically cost between $413 and $430 in January.The cheapest round-trip price found within the last 5 days was $341 on Multiple Airlines (Jan 10-Jan 16).
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 October 4, 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.
Food
6.7
Comfort
7.3
Boarding
7.7
Entertainment
7.1
Crew
8.1
Overall
7.4
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Food
6.7
Comfort
7.3
Boarding
7.7
Entertainment
7.1
Crew
8.1
Overall
7.4
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Food
6.7
Comfort
7.3
Boarding
7.7
Entertainment
7.1
Crew
8.1
Overall
7.4
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
National City
Chula Vista
San Ysidro
Poway
Coronado
La Mesa
Julian
Santee
Lemon Grove
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Peoria and San Diego flights
Browse other Peoria and San Diego flight options. Last updated on October 4, 2026.
Other flights from Peoria
Browse through other flights departing from Peoria. Flights are based on user searches made on Cheapflights and were last updated on October 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 4, 2026.
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 7,457,451 searches. Data last updated October 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$412 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$309 | Average$449 | FlexibilityNo cancel fee | On-time71% |