Find a great deal and save up to 51% by booking at least 12 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Illinois to San Diego within the next two weeks, with the cheapest ticket starting at $352.
Due to multiple factors, expect to potentially pay more when booking in June. For low rates, September can be a great choice for travel to San Diego. Flights to San Diego from Illinois in September are about $408 on average during September, but can be found for as low as $150.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to San Diego as you normally would.
Fly from
Fly to
Budget
$97 - $236
Route
Depart
Return
Price
Lambert-St LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
Mon 4/15
1 stop12h 56m
San Diego
Mon 4/22
1 stop10h 46m
Lambert-St LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
Thu 4/11
1 stop10h 58m
San Diego
Sat 4/13
1 stop11h 04m
Chicago MidwaySan Diego
MDW - SAN
MDWSAN
Chicago Midway
Mon 4/8
1 stop6h 56m
San Diego
Thu 4/11
1 stop27h 40m
Chicago MidwaySan Diego
MDW - SAN
MDWSAN
Chicago Midway
Sat 4/13
1 stop11h 45m
San Diego
Tue 4/16
1 stop10h 03m
Lambert-St LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
Tue 4/16
1 stop14h 56m
San Diego
Tue 4/23
2 stops13h 21m
Chicago O'Hare IntlSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Thu 4/11
1 stop13h 57m
San Diego
Mon 4/15
1 stop14h 07m
Chicago O'Hare IntlSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Sat 4/27
Nonstop4h 15m
San Diego
Sat 4/27
Nonstop4h 07m
Chicago O'Hare IntlSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Wed 4/17
Nonstop4h 29m
San Diego
Wed 4/24
Nonstop4h 01m
Chicago MidwaySan Diego
MDW - SAN
MDWSAN
Chicago Midway
Sat 4/20
1 stop7h 40m
San Diego
Sat 4/20
1 stop8h 45m
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
The flight attendant on the flight was extremely unprofessional and obnoxious. He treated the entire plane as if we were on a seventh grade camping trip. He thought he was funny but was actually rude to us while we were on the ground waiting to continue to our final stop. It was like being stuck with a bad comedian for four solid hours. We flew from Chicago to Long Beach to Reno over 5 hours and they did not have any food other then graham crackers. Because of being delayed no one had time to get food in the airport between flights. Terrible experience and Southwest should look into this crew member.
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
The flight attendant on the flight was extremely unprofessional and obnoxious. He treated the entire plane as if we were on a seventh grade camping trip. He thought he was funny but was actually rude to us while we were on the ground waiting to continue to our final stop. It was like being stuck with a bad comedian for four solid hours. We flew from Chicago to Long Beach to Reno over 5 hours and they did not have any food other then graham crackers. Because of being delayed no one had time to get food in the airport between flights. Terrible experience and Southwest should look into this crew member.
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
The flight attendant on the flight was extremely unprofessional and obnoxious. He treated the entire plane as if we were on a seventh grade camping trip. He thought he was funny but was actually rude to us while we were on the ground waiting to continue to our final stop. It was like being stuck with a bad comedian for four solid hours. We flew from Chicago to Long Beach to Reno over 5 hours and they did not have any food other then graham crackers. Because of being delayed no one had time to get food in the airport between flights. Terrible experience and Southwest should look into this crew member.
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
The flight attendant on the flight was extremely unprofessional and obnoxious. He treated the entire plane as if we were on a seventh grade camping trip. He thought he was funny but was actually rude to us while we were on the ground waiting to continue to our final stop. It was like being stuck with a bad comedian for four solid hours. We flew from Chicago to Long Beach to Reno over 5 hours and they did not have any food other then graham crackers. Because of being delayed no one had time to get food in the airport between flights. Terrible experience and Southwest should look into this crew member.
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
The flight attendant on the flight was extremely unprofessional and obnoxious. He treated the entire plane as if we were on a seventh grade camping trip. He thought he was funny but was actually rude to us while we were on the ground waiting to continue to our final stop. It was like being stuck with a bad comedian for four solid hours. We flew from Chicago to Long Beach to Reno over 5 hours and they did not have any food other then graham crackers. Because of being delayed no one had time to get food in the airport between flights. Terrible experience and Southwest should look into this crew member.
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
The flight attendant on the flight was extremely unprofessional and obnoxious. He treated the entire plane as if we were on a seventh grade camping trip. He thought he was funny but was actually rude to us while we were on the ground waiting to continue to our final stop. It was like being stuck with a bad comedian for four solid hours. We flew from Chicago to Long Beach to Reno over 5 hours and they did not have any food other then graham crackers. Because of being delayed no one had time to get food in the airport between flights. Terrible experience and Southwest should look into this crew member.
7%of flight departures | Early morningMidnight to 6 am |
---|---|
14%of flight departures | Morning6 am to noon |
41%of flight departures | AfternoonNoon to 6 pm |
38%of flight departures | Evening6 pm to midnight |
When you search for this flight from Illinois to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Illinois to San Diego for you. Better yet — we are completely free to use.
Yes! Cheapflights helps users easily find flights from Illinois to San Diego with no change fees.
Not ready to book yet? You can track prices for flights from Illinois to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.