Cheap flights from Austin to Chicago from $152 AUS → MDW, ORD
Austin-Bergstrom International Airport (AUS) → Chicago Midway International Airport (MDW), O'Hare International Airport (ORD)
The cheapest one-way found recently is $152 with Frontier Airlines, 4 Jan 2027, found 3 days ago.
- Cheapest one-way found recently
- $152, found 3 days ago
- Cheapest month to fly
- December 2026, one-way fares from $104 found in the last 7 days
- Airlines with nonstop flights
- Southwest Airlines
- Shortest nonstop flight found
- 2 h 30 min
One-way
The cheapest one-way fare on each of 4 departure dates is usually $136 to $167.
Cheapest one-way found recently
$152
4 Jan 2027 · Frontier Airlines
Austin-Bergstrom International Airport (AUS) → O'Hare International Airport (ORD)
Leaves 8:23 p.m. · 9 h 37 min trip
1 stop
found 3 days ago
Cheapest nonstop one-way
$213
27 Nov · Southwest Airlines
Austin-Bergstrom International Airport (AUS) → Chicago Midway International Airport (MDW)
Leaves 3:25 p.m. · 2 h 30 min trip
nonstop
found 5 days ago
Found recently, and the cheapest we hold
$152 4 Jan 2027found 3 days agoOpen this trip
$104 12 Decfound 5 days agoOpen this trip
What have prices looked like?
Over 46 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $77 to $172.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 4 departure dates from 27 Nov to 4 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 4 Jan 2027 to compare.
Every date we hold
4 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 27 Nov | $213 | Southwest Airlines | Austin-Bergstrom International Airport (AUS) → Chicago Midway International Airport (MDW) | nonstop | found 5 days ago | Open this trip |
| 12 Dec | $104 | Frontier Airlines | Austin-Bergstrom International Airport (AUS) → O'Hare International Airport (ORD) | 1 stop | found 5 days ago | Open this trip |
| 24 Dec | $146 | Frontier Airlines | Austin-Bergstrom International Airport (AUS) → O'Hare International Airport (ORD) | 1 stop | found 5 days ago | Open this trip |
| 4 Jan 2027 | $152 | Frontier Airlines | Austin-Bergstrom International Airport (AUS) → O'Hare International Airport (ORD) | 1 stop | found 3 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $104.
Airlines on the cheapest dates: Frontier Airlines, Southwest Airlines.
Premium cabin fares from Austin to Chicago
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 4 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Austin to Chicago?
One-way
Fares 30 to 59 days before departure were typically 39% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (46 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $172 | $129 | +64% | 24 |
| 7–13 days | $168 | $77 | +60% | 19 |
| 14–29 days | $142 | $77 | +35% | 19 |
| 30–59 days | $105 | $80 | Cheapest seen | 37 |
| 60–89 days | $121 | $121 | +15% | 7 |
| 90–179 days | $197 | $197 | +88% | 8 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
San Antonio → Chicago
118 km from Austin
$382
20 Dec – 3 Jan 2027 · SAT → ORD · out 1 stop, back 1 stop
found 3 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
San Antonio → Chicago
118 km from Austin
$130
$22 less than flying from Austin
25 Nov · SAT → ORD · 1 stop
found 3 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest one-way found recently is for 4 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a one-way flight from Austin to Chicago?
The cheapest one-way found recently is $152 with Frontier Airlines, 4 Jan 2027, found 3 days ago. The cheapest one-way we hold, of any age, is $104 with Frontier Airlines, 12 Dec, found 5 days ago. The cheapest one-way fare on each of 4 departure dates is usually $136 to $167.
What is the cheapest month to fly from Austin to Chicago?
December 2026 is the cheapest month for a one-way, from $104, 12 Dec, found 5 days ago.
How far ahead should I book a flight from Austin to Chicago?
In 46 days of prices between 24 Sept and 11 Nov, one-way fares 30 to 59 days before departure were typically 39% lower than 0 to 6 days before departure.
Is there a direct flight from Austin to Chicago?
Yes, the cheapest nonstop one-way found recently is $213 with Southwest Airlines, 27 Nov, found 5 days ago.
How long is the flight from Austin to Chicago?
The cheapest nonstop one-way found recently, with Southwest Airlines on 27 Nov, takes 2 h 30 min from Austin-Bergstrom International Airport (AUS) to Chicago Midway International Airport (MDW). The cheapest one-way found recently, with Frontier Airlines on 4 Jan 2027, takes 9 h 37 min with 1 stop.
Which airlines have the cheapest flights from Austin to Chicago?
Between 27 Nov and 4 Jan 2027, Frontier Airlines has the cheapest one-way on 3 of the 4 departure dates we hold, and Southwest Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work