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CHI - BUE

$657 Find cheap flights from Chicago to Buenos Aires

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Buenos Aires departing on 6/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 6/13
Thu 6/20

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Buenos Aires.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Buenos Aires.
In the last 7 days travelers have searched 42,566,405 times on KAYAK, and here is why:

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Cheap flight deals from Chicago to Buenos Aires (CHI-BUE)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Buenos Aires that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:40 am - 7:46 amORD-EZE
22h 06m3 stops
1:40 am - 11:50 pmEZE-ORD
24h 10m3 stops
Wed, Jun 5 - Mon, Jun 10
6:00 am - 3:45 amORD-EZE
43h 45m3 stops
8:00 am - 10:05 pmEZE-ORD
40h 05m3 stops
Wed, Jul 17 - Mon, Jul 29
7:47 am - 9:10 pmORD-EZE
35h 23m1 stop
11:10 pm - 11:58 pmEZE-ORD
26h 48m1 stop
$939Aeromexico
Find Deal
Mon, Jun 3 - Sat, Jun 8
7:56 am - 12:52 amORD-EZE
14h 56m1 stop
2:36 am - 12:15 amEZE-ORD
23h 39m1 stop
$1,002Copa Airlines
Find Deal
Thu, Oct 3 - Wed, Oct 16
6:49 pm - 9:45 amMDW-EZE
12h 56m1 stop
6:10 am - 9:46 pmEZE-MDW
17h 36m2 stops
$1,014Delta
Find Deal
Mon, Jun 24 - Mon, Jul 29
6:00 am - 6:15 amORD-EZE
22h 15m2 stops
6:10 am - 11:54 pmEZE-ORD
19h 44m2 stops
$1,014Delta
Find Deal
Wed, Jul 10 - Mon, Jul 22
11:50 am - 10:00 amORD-EZE
20h 10m1 stop
8:50 pm - 12:09 pmEZE-ORD
17h 19m2 stops
$1,017American Airlines
Find Deal
Wed, Oct 2 - Wed, Oct 9
7:56 am - 3:42 amORD-EZE
17h 46m1 stop
10:36 am - 12:15 amEZE-ORD
15h 39m1 stop
$1,027Copa Airlines
Find Deal
Thu, Aug 29 - Sun, Sep 8
12:15 pm - 7:05 amORD-EZE
16h 50m2 stops
8:50 pm - 3:36 pmEZE-ORD
20h 46m2 stops
$1,040American Airlines
Find Deal
Fri, Aug 30 - Mon, Sep 9
2:01 am - 9:10 pmORD-EZE
17h 09m1 stop
11:10 pm - 2:20 pmEZE-ORD
41h 10m2 stops
$1,089Aeromexico
Find Deal
Mon, May 27 - Wed, Jun 26

Flights from Chicago to Buenos Aires - Travel Insights & Trends

Get data-powered insights and trends into flights from Chicago to Buenos Aires to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Chicago to Buenos Aires?

The average price of all flights from Chicago to Buenos Aires clicked on KAYAK for each day over the last 12 months.
When flying from Chicago to Buenos Aires, you should consider leaving on a Tuesday and avoid Thursdays if you are looking for the best rates. For your return to Chicago, you’ll find the best rates on Mondays and the most expensive ones on Fridays.

What is the cheapest month to fly from Chicago to Buenos Aires?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Chicago to Buenos Aires, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Chicago to Buenos Aires is May, where tickets cost $1,023 on average. On the other hand, the most expensive months are December and January, where the average cost of tickets is $1,660 and $1,178 respectively.

How far in advance should I book a flight from Chicago to Buenos Aires?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Chicago to Buenos Aires, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Chicago to Buenos Aires, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 42 days before departure.

Which airlines provide the cheapest flights from Chicago to Buenos Aires?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Chicago to Buenos Aires were found on Air Canada ($849) and Avianca ($868). Avianca proposed the cheapest one-way flight at $657.

Good to know

Low season

August

High season

December

Cheapest flight

$657
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 43% increase in price.
Flight from Chicago O'Hare Airport to Buenos Aires

When to book flights from Chicago to Buenos Aires

Are your dates flexible? Find out the best times to travel from Chicago to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Chicago to Buenos Aires

  • What are the seat upgrade options available on United Airlines flights from Chicago to Buenos Aires?

    United Airlines offers several seat upgrade options on flights from Chicago to Buenos Aires. Passengers can choose to upgrade to Economy Plus, which provides extra legroom and additional seat reclining. Another option is to upgrade to United Polaris Business Class, offering lie-flat seats, enhanced dining, and exclusive amenities. United also provides United Premium Plus, a premium economy cabin with extra legroom, dedicated service, and enhanced dining options.

  • What in-flight entertainment options does United Airlines have on flights from Chicago to Buenos Aires?

    United Airlines offers a range of in-flight entertainment options on flights from Chicago to Buenos Aires. Passengers can enjoy a wide selection of movies, TV shows, and music through personal seatback screens. United's entertainment system also provides games, podcasts, and a variety of language-learning programs.

  • What special meals does United Airlines offer on flights from Chicago to Buenos Aires?

    United Airlines offers a range of special meals on flights from Chicago to Buenos Aires. Passengers can choose from options such as vegetarian, vegan, gluten-free, lactose-free, kosher, and Hindu vegetarian meals. These special meals cater to various dietary restrictions and preferences, ensuring that passengers have a comfortable and enjoyable dining experience during their flight.

  • How does Aerolíneas Argentinas aid sustainability travel?

    Aerolíneas Argentinas promotes sustainability in its flights from Chicago to Buenos Aires through various measures. It utilizes modern fuel-efficient aircraft to reduce carbon emissions and invests in sustainable aviation biofuels. The airline also implements waste reduction and recycling programs on board, as well as encourages passengers to offset their carbon footprint. These efforts contribute to a more environmentally conscious and sustainable travel experience for passengers on this route.

  • What is the cheapest flight from Chicago to Buenos Aires?

    In the last 3 days, the lowest price for a flight from Chicago to Buenos Aires was $657 for a one-way ticket and $803 for a round-trip.

  • Do I need a passport to fly between Chicago and Buenos Aires?

    Yes

  • Which aircraft models fly most regularly from Chicago to Buenos Aires?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Chicago to Buenos Aires?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Chicago and Buenos Aires, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Chicago to Buenos Aires, Delta or Copa Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Buenos Aires are Delta and Copa Airlines. With an average price for the route of $1,163 and an overall rating of 8.0, Delta is the most popular choice. Copa Airlines is also a great choice for the route, with an average price of $1,155 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Chicago to Buenos Aires?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to Buenos Aires.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to Buenos Aires?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to Buenos Aires?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Buenos Aires with an airline and back to Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to Buenos Aires?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Buenos Aires from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Chicago to Buenos Aires

  • Upon arrival at Buenos Aires (BUE) after your flight from Chicago (CHI), you can easily reach the city center using various transportation options. The most convenient choice is taking a taxi or ride-sharing service available at the airport. Additionally, you can opt for public transportation by using the airport shuttle bus or the local subway system. These options will ensure a hassle-free journey to the vibrant city center of Buenos Aires.
  • Aerolíneas Argentinas permits passengers to bring pets on flights from Chicago to Buenos Aires. The airline has specific guidelines regarding pet travel. Dogs and cats are allowed as checked baggage, provided they weigh no more than 70 lbs.
  • You can pre-select your seat with Aerolíneas Argentinas on your flight from Chicago to Buenos Aires. Please note that specific seat selection policies may vary depending on the ticket type and fare class. It's advisable to check the airline's official website or contact their customer service for detailed information on seat selection options.
  • Aerolíneas Argentinas provides various kid-friendly amenities on flights from Chicago to Buenos Aires. They offer a dedicated children's menu with tasty options suitable for young travelers. Additionally, the airline provides entertainment options such as movies, TV shows, and games to keep kids engaged during the journey. For comfort, they offer children's seats and blankets.
  • Common layovers for United Airlines flights from Chicago to Buenos Aires include stops in Houston, Newark, and Washington D.C. These layovers provide passengers with convenient connections between the two cities. Passengers can enjoy a brief break before continuing their journey to Buenos Aires. United Airlines offers various flight options to accommodate different travel preferences and schedules on this popular route.
See more tips

Top 5 airlines serving from Chicago to Buenos Aires

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Buenos Aires. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to Buenos Aires? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10706 reviews
8.0Entertainment
7.9Comfort
8.6Crew
8.2Boarding
7.4Food
Airline reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

2.0 MediocreDevan, May 2024AUS - BOS
Read more about Delta reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

The plane was FREEZING SEATS UNCOMFORTABLE Otherwise smooth Thank you

Boarding was chaotic. I didn’t finish dinner because I went to bed early. Breakfast omelet was overcooked and tasteless but croissant was better than usual. Plane was dirty—crumbs in every seam and lavatory was poorly maintained (paint peeling, etc.) and toilet paper had not been refreshed before takeoff. No cubby for storage in first and seat was narrow.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Copa performed as expected for the amount of money I was willing to spend for the flight; it wasn’t exceptional but it was not bad in any way either. The crew was good; friendly and straightforward. The food was airplane food, so no expectations there and the entertainment was lacking but that was my fault for owning an IPhone with a charging port that’s not compatible with the rest of the world. I’d fly Copa again.

Left my bags in origin city on a business class ticket , spent about 2-3 days in the same clothes plus the flight .

the planes are not modern there are no phone chargers

As usual, the flight with normal legroom was not very comfortable, but the second flight was much better because we had paid for extra legroom. It was very nice to check our bags without an extra fee.

LOCKED MY BAG WITHOUT CONSENT. Had to have my zippers cut upon arrival in Costa Rica.

Pros: "The seats in economy were confortable. The best thing was Copa gave us seats in the second line and my family traveled together."
Cons: "Coffe service could better the experience"
Pros: "The crew was very interested on help and attentive with the passengers. But the seat wasn't comfortable. The design of the cushion is not the best to be seating"
Pros: "You were on time, that is the most important thing in a fly"
Cons: "You could improve your entertainment, you are not a cheap company"
Pros: "That there was seltzer"
Cons: "The management of preparing the flight and plane so that it was ready for the trip!!"
Pros: "Copa was convenient and easy. Very easy boarding process and I appreciated the day flight."
Cons: "This is a business class that is equivalent to a US carrier domestic first class. Good seats, not lay flat but wide on my 737-800. The food and service emulated say American Airlines Domestic 1C as well. Everything was just good enough, and much cheaper that international business on the majors."

The plane was so outdated, that it made it uncomfortable. The temperature was hot during the whole flight

Some entertainment and food/snack service would have been nice

All the pessengers should be wait in a line útil the creo and piloto are arrived.

Planes seat could be bigger very uncomfortable for tall humans.

Atraso de dos horas y media con vuelos sobre vendidos

1 hour waiting for suitcases to come out traveling in business class and food in business class is a sandwich? Avoid Aeromexico .

No space reserved for anyone who didn’t have underseat in front of them. Made it inconvenient to get the backs secured. No inflight entertainment in the 190. Bring your own! Food was excellent and we were surprised to get a full breakfast.

Cons: "left Houston more than 2 hours later, arrive in Mexico over 2 am"
Cons: "El problema es que nunca pude cambiar mi vuelo y con ustedes fue imposible comunicarse para que me auxiliaran. Muy mal por ustedes no por la línea."
Pros: "The crew was amazing , the site is ok"
Cons: "I love Aeroméxico , thanks for de service and the food."

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

I’ve had a couple flights this week on United that were delayed by an hour or more

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

Nothing beats ANA customer service on my opinion. Maybe because of their Japanese culture (and food). Arigatō

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

Flight delayed for 2 hours due to a part. The plane sat waiting for boarding for a long time and during final preflight inspection the issue was found. Why not do the preflight inspection sooner if you know the plane is being used?

The flight experience was very good! Especially the United Club!

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

Aircraft has better leg room than any of United's larger planes. We had requested mobility assistance for this and related flights. United's response to all was superb.

It was spectacular. I had basic Economy and was given so much space and their seats lean back so far. Staff was superb, food was superb, everything was superb, Finnair is Fantastic.

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Because I can’t stand very long in one place, I was allowed to reword.

We were delayed bc ground crew gave the flight crew the wrong paperwork. We taxiied to the runway then back to the gate to get the correct paperwork that no one bothered reviewing the first time we pushed back. Boarding was rude and stressful like it always is. Gate agents and flight attendants are all over 55 years of age, embittered by years of underpayment From AA leading to their passive agressive bitchiness for no reason.

Boarding time was easy & quick. Crew was excellent. In-flight entertainment was great/easy. Seats are too small and not enough room between rows: felt like a sardine/very cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

Excellent- plan was barely populated. I cannot remember a flight where I was able/encouraged to stretch out!

Great flight. Boarding was efficient and quick. On time departure and smooth flight. Flight arrived early at destination. Good experience.

Had technical issue which delayed the flight period. Flight crew knew there was 5 passengers that the connecting flight was within 15 minutes once at the gate. Rather than identify the 5 passengers to assure they got first. The flight attended mentioned it but didn't assist to assure passengers with connecting flights off first. This caused a hardship and our party of 3 missed the connecting flight.

I don't like that I have to pay if I want extra leg room. The seats are so expensive; I sit in normal seats and my legs and knees cramp the entire flight. I never feel comfortable on AA flights.

Book cheap flights from Chicago to Buenos Aires

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Chicago to Buenos Aires found on KAYAK in the last 72 hours.
6/16Sun
1 stopAvianca
34h 35mORD-EZE
$657
6/5Wed
2 stopsAir Canada
28h 05mORD-EZE
$664
6/19Wed
1 stop
35h 30mORD-EZE
$672
6/24Mon
2 stopsDelta
17h 34mMDW-EZE
$717
6/28Fri
1 stopDelta
12h 56mMDW-EZE
$787
11/2Sat
1 stopCopa Airlines
17h 54mORD-EZE
$1,139
5/26Sun
2 stopsAeromexico
29h 09mORD-EZE
$1,512
6/4Tue
1 stopAeromexico
17h 09mORD-EZE
$1,813
10/31Thu
2 stopsAmerican Airlines
15h 42mORD-EZE
$4,286
10/31Thu
1 stopAmerican Airlines
22h 35mORD-EZE
$4,287

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Last minute flights from Chicago to Buenos Aires

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Chicago to Buenos Aires that are departing in the next 10 days.
5/17Fri
multi-stopAir Canada
30h 50mORD-EZE
5/23Thu
multi-stopAir Canada
18h 26mEZE-ORD
$882
5/17Fri
multi-stop
16h 55mORD-EZE
5/24Fri
multi-stop
26h 17mEZE-ORD
$968
5/17Fri
multi-stopCopa Airlines
14h 30mORD-EZE
5/24Fri
multi-stopCopa Airlines
15h 53mEZE-ORD
$1,052
5/17Fri
multi-stopDelta
19h 28mORD-EZE
5/24Fri
multi-stopDelta
19h 45mEZE-ORD
$1,064
5/17Fri
multi-stopCopa Airlines
14h 30mORD-EZE
5/23Thu
multi-stopCopa Airlines
24h 46mEZE-ORD
$1,147
5/17Fri
multi-stopDelta
18h 58mMDW-EZE
5/20Mon
multi-stopDelta
38h 05mEZE-MDW
$1,234
5/17Fri
multi-stopLATAM Airlines
23h 15mMDW-AEP
5/23Thu
multi-stopLATAM Airlines
21h 42mAEP-MDW
$1,234
5/17Fri
multi-stopLATAM Airlines
23h 28mORD-AEP
5/23Thu
multi-stopLATAM Airlines
20h 08mAEP-ORD
$1,234
5/16Thu
multi-stopAeromexico
17h 09mORD-EZE
5/24Fri
multi-stopAeromexico
50h 16mEZE-ORD
$1,710
5/16Thu
multi-stopAeromexico
17h 09mORD-EZE
5/23Thu
multi-stopAeromexico
19h 18mEZE-ORD
$2,454

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Flights to Buenos Aires

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