San Antonio to Chicago flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for San Antonio to Chicago is €90 (checked on 30 Oct 2026).
Your next trip, last seen at €90
Lowest observedWhen to fly
Explore datesMore dates worth a look
Find the dates that work for you
The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- 1 Dec€167
- 2 Dec€147
- 3 Dec€154
- 4 Dec€134
- 5 Dec€183
- 7 Dec€134
- 8 Dec€154
- 9 Dec€162
- 10 Dec€155
- 11 Dec€141
- 12 Dec€177
- 14 Dec€148
- 15 Dec€153
- 16 Dec€154
- 17 Dec€196
- 22 Dec€200
- 24 Dec€167
- 25 Dec€176
- 30 Dec€153
- Lowest observed
- €90, departing 19 Dec 2026 (Last checked: 30 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 78Check live prices for this route
- Round trip
- €145, departing 13 Nov 2026, back 15 Nov 2026 (Last checked: 5 Nov 2026)
- Non-stop, one way
- €130, departing 12 Dec 2026 (Last checked: 30 Oct 2026)
- Airlines seen
- American Airlines, United Airlines, Breeze Airways, Delta Air Lines, Frontier Airlines
- Fastest observed flight time
- 2h 58m
- Non-stop
- Yes
About this route
Explore the fares we observed from San Antonio to Chicago. Prices move often, so pick your dates to see the latest options.
- Route distance
- 1,694 km
- Fastest observed flight time
- 2h 58m
- Airlines seen
- American Airlines, United Airlines, Breeze Airways, Delta Air Lines, Frontier Airlines
- Alternative airports
- CGX, DPA, MDW, PWK, RFD
Route-level information; individual journeys vary.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days |
|---|---|
| American Airlines | 6 / 194 |
| United Airlines | 6 / 194 |
Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.
Airport to city: straight-line distance
- San Antonio International Airport (SAT) → San Antonio, city gazetteer reference point (29.4241, -98.4936): ≈ 12 km.
- Chicago Midway International Airport (MDW) → Chicago, city gazetteer reference point (41.8781, -87.6298): ≈ 14 km.
- Chicago O'Hare International Airport (ORD) → Chicago, city gazetteer reference point (41.8781, -87.6298): ≈ 25 km.
- Chicago Rockford International Airport (RFD) → Chicago, city gazetteer reference point (41.8781, -87.6298): ≈ 126 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €148 | 9 |
| December 2026 | €134 | 19 |
| January 2027 | €137 | 26 |
| February 2027 | €144 | 22 |
Lowest fare by day of the week
Cheapest day of the week from San Antonio to Chicago: Monday, from €134 (checked 5 Nov 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €134 | 13 |
| Tuesday | €153 | 13 |
| Wednesday | €147 | 14 |
| Thursday | €144 | 13 |
| Friday | €134 | 12 |
| Saturday | €148 | 5 |
| Sunday | €147 | 8 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from San Antonio to Chicago by days until departure (8 to 30 days): €134 (checked 5 Nov 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €148 | 8 |
| 8 to 30 days | €134 | 9 |
| 31 to 60 days | €141 | 16 |
| 61 days or more | €137 | 45 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from San Antonio to Chicago: Frontier Airlines, from €90 (checked 30 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €90Dec 1, 2026 | 57 |
| American Airlines | €130Dec 1, 2026 | 6 |
| United Airlines | €130Dec 1, 2026 | 7 |
| Breeze Airways | €137Jan 11, 2027 | 13 |
| Delta Air Lines | €139Dec 1, 2026 | 6 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from San Antonio to Chicago?
The lowest fare Routavio has observed is €90, found on 30 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from San Antonio to Chicago?
In our observations December 2026 is the cheapest month so far, at €90.
Are there direct flights from San Antonio to Chicago?
Yes. Published schedules report non-stop flights on this route with American Airlines, United Airlines, Southwest Airlines.
Which airlines fly from San Antonio to Chicago?
Routavio has seen these carriers on the route: American Airlines, United Airlines, Breeze Airways, Delta Air Lines, Frontier Airlines.
How long does the flight from San Antonio to Chicago take?
Across the 70 fares Routavio observed, the average journey time is 20h 51m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How much is a round trip from San Antonio to Chicago?
Cheapest round trip: €145, departing 13 Nov 2026, back 15 Nov 2026 (checked 5 Nov 2026).
How much is a non-stop flight from San Antonio to Chicago?
Cheapest non-stop one-way fare: €130, departing 12 Dec 2026 (checked 30 Oct 2026).
Which airlines had non-stop offers on at least 3 departure dates from San Antonio to Chicago?
For San Antonio to Chicago, examples of observed one-way non-stop offers checked within the last 14 days: American Airlines (6), United Airlines (6). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which day of the week is cheapest from San Antonio to Chicago?
Cheapest day of the week from San Antonio to Chicago: Monday, from €134 (checked 5 Nov 2026).
Which airline has the lowest fare from San Antonio to Chicago?
Cheapest airline from San Antonio to Chicago: Frontier Airlines, from €90 (checked 30 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.