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CHI - BUE

Find cheap flights from Chicago to Buenos Aires from $318

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 6/19. 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
Sat 6/8
Sat 6/15

Search hundreds of travel sites at once for deals on flights 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.
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 43,895,468 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
8:45 am - 2:50 pmORD-EZE
28h 05m2 stops
4:25 pm - 10:01 amEZE-ORD
19h 36m2 stops
$849Air Canada
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Tue, May 28 - Wed, Jul 17
9:41 pm - 12:05 amORD-EZE
24h 24m2 stops
2:15 am - 10:01 amEZE-ORD
33h 46m3 stops
Sat, Jun 8 - Fri, Jun 14
2:01 am - 9:10 pmORD-EZE
17h 09m1 stop
11:10 pm - 2:32 pmEZE-ORD
17h 22m1 stop
$918Aeromexico
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Tue, May 28 - Fri, Jun 7
4:19 pm - 9:10 pmORD-EZE
26h 51m1 stop
11:10 pm - 11:58 pmEZE-ORD
26h 48m1 stop
$919Aeromexico
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Wed, May 29 - Fri, Jun 7
7:56 am - 12:52 amORD-EZE
14h 56m1 stop
10:36 am - 12:15 amEZE-ORD
15h 39m1 stop
$1,002Copa Airlines
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Tue, Sep 3 - Tue, Sep 24
10:11 am - 6:15 amMDW-EZE
18h 04m2 stops
6:10 am - 9:47 pmEZE-MDW
17h 37m2 stops
$1,014Delta
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Wed, Jul 10 - Wed, Aug 7
9:22 am - 6:15 amORD-EZE
18h 53m2 stops
6:10 am - 11:59 pmEZE-ORD
19h 49m2 stops
$1,014Delta
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Wed, Jul 10 - Wed, Aug 7
1:15 pm - 9:15 amORD-EZE
18h 00m2 stops
8:55 pm - 5:16 pmEZE-ORD
22h 21m1 stop
$1,017American Airlines
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Wed, Jul 10 - Wed, Aug 7
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
Fri, Aug 30 - Mon, Sep 9
4:53 pm - 9:50 amORD-EZE
14h 57m1 stop
9:40 pm - 12:05 pmEZE-ORD
17h 25m1 stop
$1,039American Airlines
Find Deal
Sat, Nov 2 - Mon, Nov 11

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 October, where tickets cost $1,001 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 Aeromexico ($918). Avianca proposed the cheapest one-way flight at $502.

Good to know

Low season

July

High season

December

Cheapest flight

$318
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 44% 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 $318 for a one-way ticket and $849 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 $1,161 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 $1,164 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 10778 reviews
7.4Food
7.9Comfort
8.6Crew
8.2Boarding
8.0Entertainment
Airline reviews

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

4.0 OkayDouglas, May 2024MSP - YEG
Read more about Delta reviews

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.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Big plane, long flight, absolutely no leg room and basically non existent air! I am 5”4’ and always travel Main Cabin, I was miserable on this plane and could barely move when we arrived in Cabo due to the cramped leg area!

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."

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.

The flight from Ottawa to Chicago took a lot longer due to DC in Ottawa. We got to Chicago and went to our gate to catch our flight. We only had nine minutes I found that very stressful.

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.
6/19Wed
3 stops
22h 06mORD-EZE
$318
6/19Wed
3 stops
37h 43mMDW-AEP
$335
6/19Wed
3 stops
25h 20mORD-AEP
$336
7/31Wed
2 stopsDelta
18h 04mMDW-EZE
$717
7/29Mon
1 stopDelta
16h 00mORD-EZE
$717
5/14Tue
1 stopAmerican Airlines
14h 50mORD-EZE
$867
7/25Thu
1 stopCopa Airlines
15h 03mORD-EZE
$1,163
7/20Sat
1 stopAeromexico
17h 15mORD-EZE
$1,362
6/18Tue
1 stopAeromexico
17h 09mORD-EZE
$1,512
10/31Thu
2 stopsAmerican Airlines
15h 42mORD-EZE
$4,681

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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.
5/10Fri
multi-stopAir Canada
25h 55mORD-EZE
5/18Sat
multi-stopAir Canada
19h 36mEZE-ORD
$849
5/13Mon
multi-stopDelta
22h 55mMDW-EZE
5/20Mon
multi-stopDelta
13h 55mEZE-MDW
$1,014
5/14Tue
multi-stopDelta
22h 25mORD-EZE
5/21Tue
multi-stopDelta
24h 41mEZE-ORD
$1,014
5/14Tue
multi-stopAmerican Airlines
16h 40mORD-EZE
5/21Tue
multi-stopAmerican Airlines
21h 31mEZE-ORD
$1,017
5/11Sat
multi-stopLATAM Airlines
20h 59mMDW-AEP
5/18Sat
multi-stopLATAM Airlines
18h 42mAEP-MDW
$1,064
5/11Sat
multi-stopLATAM Airlines
16h 28mORD-AEP
5/18Sat
multi-stopLATAM Airlines
18h 09mAEP-ORD
$1,064
5/13Mon
multi-stopAeromexico
17h 09mORD-EZE
5/21Tue
multi-stopAeromexico
26h 49mEZE-ORD
$1,109
5/10Fri
multi-stopCopa Airlines
28h 46mORD-EZE
5/18Sat
multi-stopCopa Airlines
28h 42mEZE-ORD
$1,180
5/13Mon
multi-stopCopa Airlines
17h 41mORD-EZE
5/19Sun
multi-stopCopa Airlines
15h 53mEZE-ORD
$1,222
5/10Fri
multi-stopAeromexico
17h 09mORD-EZE
5/18Sat
multi-stopAeromexico
19h 18mEZE-ORD
$2,924

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Flights to Buenos Aires

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