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Champaign

Cheap flights from San Diego to Champaign (SAN - CMI)

SAN — CMI
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheap flight deals from San Diego to Champaign

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Champaign (CMI). 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

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Popular in

September

Cheapest in

January

Average price

$508
Provider with most accurate pricing for San Diego-Champaign University-Willard flight deals.
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Provider most trusted by Cheapflights users for San Diego-Champaign University-Willard flights.
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Highest demand for flights based on searches. 25% potential increase in price ($171 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Compare providers for flights from San Diego to Champaign

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 San Diego to Champaign in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 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 San Diego-Champaign flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Champaign flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Champaign flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Champaign 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 San Diego-Champaign 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 San Diego to Champaign

Have a flexible travel schedule? Discover the best time to fly to Champaign from San Diego 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 San Diego to Champaign

What is the cheapest month to book a flight from San Diego to Champaign?

Currently, January is the cheapest month in which you can book a flight from San Diego to Champaign (average of $217). Flying from San Diego to Champaign in June is currently the most expensive (average of $364). 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 Champaign

Get insights into the airlines that provide service to Champaign. 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 Champaign. Reviews last updated November 3, 2025.
Get a feel of what it's like to fly with American Airlines from San Diego to Champaign by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,037 reviews

Food

6.4

Overall

7.2

Entertainment

6.9

Comfort

7.2

Crew

8.0

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
11,037 reviews
American Airlines
7.2
Good
11,037 reviews

Food

6.4

Overall

7.2

Entertainment

6.9

Comfort

7.2

Crew

8.0

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from San Diego to Champaign. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from San Diego to Champaign round-trip?

    Cheapflights users have booked flights from San Diego to Champaign round-trip from $336. Users have found that American Airlines is 31% cheaper than the other options available to this destination.

  • Can I find deals for flights from San Diego to Champaign that include hotel bookings?

    Yes. In addition to deals on San Diego to Champaign flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Champaign?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Champaign.

  • Can I find deals for business class flights from San Diego to Champaign?

    Yes. Cheapflights offers flight deals from San Diego to Champaign 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 San Diego to Champaign?

    Currently, January is the cheapest month in which you can book a flight from San Diego to Champaign (average of $217). Flying from San Diego to Champaign in June is currently the most expensive (average of $364). 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 Champaign?

Book flights to Champaign if you plan to visit one of these locations
Urbana
Danville

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Top airline flying from San Diego to Champaign

Discover the top airline that operate flights from San Diego to Champaign. 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$336Average$524FlexibilityNo cancel feeOn-time71%

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