Chicago to Buenos Aires flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Chicago to Buenos Aires is €314 with Arajet (checked on 21 Oct 2026).
Your next trip, last seen at €314
Lowest observedArajet · 3 stops · One wayWhen to fly
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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
- Lowest observed
- €314, departing 16 Nov 2026 (Last checked: 21 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Aerolineas Argentinas, Allegiant Air, Arajet, Avianca, Copa Airlines, Frontier Airlines, JetBlue, JetSmart, LATAM Airlines, Porter Airlines Canada, Sky Airline, United Airlines, Volaris (13)
- Typical journey time
- 27h 12m
About this route
Explore the fares we observed from Chicago to Buenos Aires. Prices move often, so pick your dates to see the latest options.
- Route distance
- 9,013 km
- Typical journey time
- 27h 12m
- Seen on fares with a connection
- Frontier Airlines, Arajet, Copa Airlines, United Airlines, LATAM Airlines, Aerolineas Argentinas, JetBlue, Avianca, Sky Airline (9)
- Alternative airports
- CGX, DPA, MDW, PWK, RFD, AEP
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- 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.
- Aeroparque Jorge Newbery (AEP) → Buenos Aires, city gazetteer reference point (-34.6084, -58.3732): ≈ 7 km.
- Ezeiza International Airport - Ministro Pistarini (EZE) → Buenos Aires, city gazetteer reference point (-34.6084, -58.3732): ≈ 28 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 one-way fare we saw per airline
Cheapest airline from Chicago to Buenos Aires: Arajet, from €314 (checked 21 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Arajet | €314Nov 16, 2026 | 14 |
| Frontier Airlines | €323Nov 25, 2026 | 41 |
| Copa Airlines | €370Dec 6, 2026 | 6 |
| LATAM Airlines | €482Dec 10, 2026 | 4 |
| United Airlines | €528Dec 27, 2026 | 5 |
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 Chicago to Buenos Aires?
The lowest fare Routavio has observed is €314, found on 21 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Chicago to Buenos Aires?
In our observations November 2026 is the cheapest month so far, at €314.
Are there direct flights from Chicago to Buenos Aires?
Our data holds no non-stop flight from Chicago to Buenos Aires. The fares on this page include at least one stop.
Which airlines fly from Chicago to Buenos Aires?
Routavio has seen these carriers on the route: Aerolineas Argentinas, Allegiant Air, Arajet, Avianca, Copa Airlines, Frontier Airlines, JetBlue, JetSmart, LATAM Airlines, Porter Airlines Canada, Sky Airline, United Airlines, Volaris (13).
How long does the flight from Chicago to Buenos Aires take?
Across the 76 fares Routavio observed, the average journey time is 29h 37m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Chicago to Buenos Aires fares were non-stop?
None of the 77 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which airline has the lowest fare from Chicago to Buenos Aires?
Cheapest airline from Chicago to Buenos Aires: Arajet, from €314 (checked 21 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.