Flights to San Diego from Champaign - $214

View $214 flight on Sat, Sep 27, 2025Opens in a new window

Popular airlines from Champaign to San Diego

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

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

Prices were available within the past 7 days and start at $214 for one-way flights and $284 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Aug 19 - Tue, Aug 26
DEC
Decatur
SAN
San Diego
$284 Roundtrip, found 5 days ago
$284
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 19 from Decatur to San Diego, returning Tue, Aug 26, priced at $284 found 5 days ago
United
Tue, Aug 19 - Tue, Aug 26
DEC
Decatur
SAN
San Diego
$290 Roundtrip, found 5 days ago
$290
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 19 from Decatur to San Diego, returning Tue, Aug 26, priced at $290 found 5 days ago
United
Tue, Aug 19 - Tue, Aug 26
DEC
Decatur
SAN
San Diego
$294 Roundtrip, found 5 days ago
$294
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 19 from Decatur to San Diego, returning Tue, Aug 26, priced at $294 found 5 days ago
United
Tue, Aug 19 - Tue, Aug 26
DEC
Decatur
SAN
San Diego
$299 Roundtrip, found 5 days ago
$299
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 19 from Decatur to San Diego, returning Tue, Aug 26, priced at $299 found 5 days ago
United
Tue, Aug 19 - Tue, Aug 26
DEC
Decatur
SAN
San Diego
$310 Roundtrip, found 5 days ago
$310
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 19 from Decatur to San Diego, returning Tue, Aug 26, priced at $310 found 5 days ago
American Airlines
Sat, Aug 23 - Thu, Aug 28
CMI
Champaign
CLD
Carlsbad
$350 Roundtrip, found 1 day ago
$350
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Aug 23 from Champaign to Carlsbad, returning Thu, Aug 28, priced at $350 found 1 day ago

Find the cheapest month to fly from Champaign (CMI) to San Diego (SAN)

January is typically the cheapest month to fly

From $220 - $706 per traveler.

Graph displaying average flight prices per month

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Diego Intl. SAN. Closest option available. Average driving time to city center is 5 minutes. Flights from $588
SAN
San Diego Intl.
Closest
Average driving time to city center5 min
Flights from $588
Select flight to General Abelardo L. Rodriguez Intl. TIJ. Cheapest option available. Average driving time to city center is 26 minutes. Flights from $375
TIJ
General Abelardo L. Rodriguez Intl.
Cheapest
Average driving time to city center26 min
Flights from $375
*Available to One Key members.