$139+ Cheap flights from Chicago (CHI) to San Diego (SAN)

For a flight from Chicago to San Diego, you will be flying into San Diego. San Diego (SAN) is just 2.6 mi from the center of the city. San Diego is the only San Diego airport and it handles 27 inbound flights from Chicago per day. 7 airlines have flights to San Diego from Chicago on a regular basis.

For as low as $257, United Airlines can have you in San Diego from Chicago in 4h 27m. Airlines will cover a distance of 1719 mi. Both multi-stop and nonstop flights can be found to your destination and back.

Cheapflights users have booked flights from Chicago to San Diego round-trip from $77. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $138, and Alaska Airlines, from $154. Users have found that Frontier is 74% cheaper than the other options available to this destination.

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $57. However, be on the lookout for offers from Alaska Airlines and United Airlines, as they are both options that can get you from Chicago to San Diego for a low price.

No one likes to see their flight delayed. When booking a flight from Chicago to San Diego consider choosing Air Canada (79%), United Airlines (76%) or Alaska Airlines (75%) as they are the most reliable in getting you off to your destination on time.

While on average a flight from Chicago to San Diego is generally $1,182, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Chicago O'Hare Intl - San Diego), you can expect to pay $214 for that flight.

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

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

Yes. Cheapflights offers flight deals from Chicago 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.

Currently, January is the cheapest month in which you can book a flight from Chicago to San Diego (average of $244). Flying from Chicago to San Diego in June is currently the most expensive (average of $365). 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.