Category: <span>Chicago</span>

Frontier has round-trip flights from Austin (AUS) to Chicago, Cleveland, San Diego, or Phoenix (ORD, CLE, SAN, PHX) for $77-$95, NONSTOP. Flights in September. Limited departure dates.

Free Checked Bag Coupon: Use code “FREEBAG”. *Buy by 8/21/25. Fly between 9/5/25 – 1/5/2026. Limit one free Checked Bag per person, per direction, weight limit applies.
When booking, Select “Basic Fare”, Don’t purchase any add-ons, Don’t select any bundle, Avoid seat fee by accepting the random seat, Don’t pay for a carry-on. Use Frontier’s Mobile app to avoid airport agent fees. Then under “Checked Bags” select “1x 40lb Checked Bag – $0” (see image)
Before you enter in your credit card information: Double check that is says “$0.00 Checked Bag” for both your departing and return flights (see image). If it says “You have not purchased bags. Add now!” click it to re-add bags, and RE-ENTER the “FREEBAG” coupon code on the same page that you enter in your payment details.
This coupon also works on other destinations.

Click for more details and booking links Nonstop Flights: Austin to Chicago, Cleveland, San Diego, or Phoenix $77-$95 r/t [September] (Free Checked Bag – Use Code “FREEBAG”) – Frontier

Airfare Deals Chicago Flights from Austin Frontier

Airfare Deals Chicago Flights from Austin Southwest

Airfare Deals American Airlines Chicago Flights from Austin Oneworld

American Airlines and United have round-trip flights from Austin (AUS) to Chicago or Miami (ORD, MIA) for $149-$169, NONSTOP. Flights April to May. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible.

A Carry-on bag and also a personal item is allowed for free on American. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.

Click for more details and booking links Nonstop Flights: Austin to/from Chicago or Miami $149-$169 r/t [April-May] (Tue, Wed, Sat) – American Airlines / United

Airfare Deals American Airlines Chicago Flights from Austin Oneworld Star Alliance United

Airfare Deals Chicago Flights from Austin Southwest

Southwest, American Airlines, and United have round-trip flights from Austin (AUS) to Chicago (MDW/ORD) for $177, NONSTOP. Flights February to May. No Weekends. Departures on Monday, Tuesday, Wednesday, and Thursday. Origin/Destination reversible.

A Carry-on bag and also a personal item is allowed for free on American. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.

Click for more details and booking links Nonstop Flights: Austin to/from Chicago $177 r/t [February-May] – Southwest / American Airlines / United

Airfare Deals American Airlines Chicago Flights from Austin Oneworld Southwest Star Alliance United

United has round-trip flights from Austin or San Antonio (AUS, SAT) to Chicago (ORD) for $119-$125, NONSTOP. Flights October to January. Weekends available. Origin/Destination reversible.

United’s “Basic Economy” fares do not allow for a free carry-on bag. Only a personal item (like a small laptop bag) is free. Seats are randomly assigned for free prior to boarding.

The personal item size on United is smaller (9 x 10 x 17 inches) than Frontier or Spirit (8 x 13 x 18 inches).

Click for more details and booking links Nonstop Flights: Austin or San Antonio to/from Chicago $119-$125 r/t [October-January] – United

Airfare Deals Chicago Flights from Austin Flights from San Antonio Star Alliance United

United has round-trip flights from Austin (AUS) to Chicago or Los Angeles (ORD, LAX) for $121-$135, NONSTOP. Flights October to January. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible.

United’s “Basic Economy” fares do not allow for a free carry-on bag. Only a personal item (like a small laptop bag) is free. Seats are randomly assigned for free prior to boarding.

The personal item size on United is smaller (9 x 10 x 17 inches) than Frontier or Spirit (8 x 13 x 18 inches).

Click for more details and booking links Nonstop Flights: Austin to/from Chicago or Los Angeles $121-$135 r/t [October-January] (Tue, Wed, Sat) – United

Airfare Deals Chicago Flights from Austin Star Alliance United

United has round-trip flights from Austin (AUS) to Chicago (ORD) for $171, NONSTOP. Flights in March. Weekends available. Origin/Destination reversible.

United’s “Basic Economy” fares do not allow for a free carry-on bag. Only a personal item (like a small laptop bag) is free. Seats are randomly assigned for free prior to boarding.

The personal item size on United is smaller (9 x 10 x 17 inches) than Frontier or Spirit (8 x 13 x 18 inches).

Click for more details and booking links Nonstop Flights: Austin to/from Chicago $171 r/t [March] – United

Airfare Deals Chicago Flights from Austin Star Alliance United

American Airlines has round-trip flights from Austin (AUS) to Chicago or Denver (ORD, DEN) for $118-$138. Chicago flights are NONSTOP. Denver flights have a connection. Flights September to March. Weekends available. Origin/Destination reversible.

A Carry-on bag and also a personal item is allowed for free on American. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.

Click for more details and booking links Cheap Flights: Austin to/from Chicago or Denver $118-$138 r/t [September-March] (Weekends available) – American Airlines

Airfare Deals American Airlines Chicago Flights from Austin Oneworld

Airfare Deals Chicago Flights from Austin Star Alliance United

Airfare Deals Chicago Flights from Austin Star Alliance United