The cheapest ticket to Illinois from San Diego found in the last 72 hours was $43 one-way, and $95 round-trip. The most popular route is from San Diego to Chicago O'Hare Intl, and the cheapest round-trip airline ticket found on this route in the last 72 hours was $31.

The best way to get from San Diego to Illinois is to fly which takes 5h 42m and costs $75 - $600. Alternatively, you can train, which costs $190 - $700 and takes 46h 3m, you could also bus, which costs $170 - $1,000 and takes 2 days 3h.

Find United Airlines cheap flights from San Diego to Chicago. Enjoy a San Diego to Chicago modern flight experience in premium cabins with Wi-Fi.

Detailed flight information from San Diego SAN to Chicago ORD. See all airline (s) with scheduled flights and weekly timetables up to 9 months ahead. Flightnumbers and complete route information.

Fly one-way from San Diego to Chicago (O'Hare) starting at $180. Bundle your Southwest Airlines® flight with a hotel or rental car booking and find even more savings.

Cheap Flights from San Diego (SAN) to Chicago (ORD) start at $60 for one-way and $90 for round trip. Earn your airline miles on top of our rewards!

The best way to get from San Diego to Chicago is to fly which takes 5h 41m and costs $60 - $550. Alternatively, you can train, which costs $190 - $700 and takes 46h 3m, you could also bus, which costs $170 - $1,000 and takes 2 days 4h.

Find flights to Chicago from $45. Fly from San Diego on Frontier, Spirit Airlines and more. Search for Chicago flights on KAYAK now to find the best deal.

Find airfare and ticket deals for cheap flights from San Diego to Illinois. Search flight deals from various travel partners with one click at $61.

Flights between San Diego, CA and Chicago, IL starting at $77. Choose between United Airlines, Alaska Airlines, or Spirit Airlines to find the best price. Search, compare, and book flights to Chicago, IL from San Diego, CA