$399 Find Cheap Flights from Buenos Aires to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buenos Aires to Illinois departing on 3/29. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buenos Aires to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buenos Aires to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Buenos Aires to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buenos Aires to Illinois 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buenos Aires to Illinois

Thu, May 7 - Mon, May 18
Multiple Airlines Logo
1:15 pm - 1:15 pm
EZE
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ORD
26h 00m
2 stops
Multiple Airlines Logo
4:30 am - 12:05 am
ORD
-
EZE
17h 35m
1 stop
$784Multiple Airlines
Thu, May 7 - Mon, May 18
Multiple Airlines Logo
2:30 am - 11:27 am
EZE
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ORD
34h 57m
2 stops
Multiple Airlines Logo
4:30 am - 12:05 am
ORD
-
EZE
17h 35m
1 stop
$788Multiple Airlines
Fri, May 8 - Mon, May 18
Arajet Logo
9:15 pm - 9:57 am
EZE
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ORD
14h 42m
1 stop
Arajet Logo
4:30 am - 12:05 am
ORD
-
EZE
17h 35m
1 stop
$799Arajet
Wed, Mar 4 - Wed, Mar 25
Multiple Airlines Logo
12:15 pm - 6:18 pm
EZE
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ORD
33h 03m
3 stops
Multiple Airlines Logo
6:45 am - 12:05 am
ORD
-
EZE
15h 20m
1 stop
$806Multiple Airlines
Wed, Apr 22 - Tue, Apr 28
Air Canada Logo
4:30 pm - 10:53 am
EZE
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ORD
20h 23m
2 stops
Air Canada Logo
12:50 pm - 2:30 pm
ORD
-
EZE
23h 40m
2 stops
$838Air Canada
Wed, Apr 22 - Mon, Apr 27
Air Canada Logo
4:30 pm - 10:53 am
EZE
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ORD
20h 23m
2 stops
Air Canada Logo
8:20 pm - 2:30 pm
ORD
-
EZE
40h 10m
2 stops
$843Air Canada
Wed, Mar 4 - Tue, Mar 10
Delta Logo
8:55 pm - 12:46 pm
EZE
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MDW
18h 51m
2 stops
Delta Logo
10:45 am - 6:05 am
MDW
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EZE
17h 20m
2 stops
$967Delta
Thu, May 7 - Thu, May 28
Delta Logo
8:10 pm - 8:07 am
EZE
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STL
13h 57m
1 stop
Delta Logo
1:30 pm - 9:45 am
STL
-
EZE
18h 15m
1 stop
$992Delta
Thu, May 7 - Fri, May 29
American Airlines Logo
8:35 pm - 10:16 am
EZE
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STL
15h 41m
1 stop
American Airlines Logo
5:45 am - 7:10 am
STL
-
EZE
23h 25m
1 stop
$1,027American Airlines
Thu, May 7 - Thu, May 28
American Airlines Logo
8:35 pm - 12:48 pm
EZE
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STL
18h 13m
2 stops
American Airlines Logo
10:31 am - 7:15 am
STL
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EZE
18h 44m
2 stops
$1,031American Airlines
Booking Insights

KAYAK's insights & trends for Buenos Aires to Illinois flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Buenos Aires to Illinois, 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 Buenos Aires to Illinois is November, when tickets cost $981 (return) on average. On the other hand, the most expensive months are July and March, when the average cost of round-trip tickets is $1,369 and $1,287 respectively.

Good to know

Low seasonFebruary
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 13% lower on average.

FAQs - booking Illinois flights

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

    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 Buenos Aires to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Buenos Aires to Illinois 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 Buenos Aires to Illinois?

    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 from Buenos Aires to Illinois with an airline and back with another airline.

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

    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 from Buenos Aires to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Buenos Aires to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Buenos Aires to Illinois. 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 Buenos Aires to Illinois? 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.
7.9
DeltaOverall score based on 8087 reviews
7.2Food
7.9Comfort
8.1Boarding
8.5Crew
7.8Entertainment
Airline reviews

There was no wifi available on this flight. And there were no screens, no onboard entertainment, no entertainment options at all. It was like travelling in the 1990s again, except without even a main screen for options. Seats, as usual, were tight and uncomfortable.

4.0 OkayJohn, Jan 2026
DAL - ATL
Read more Delta reviews

There was no wifi available on this flight. And there were no screens, no onboard entertainment, no entertainment options at all. It was like travelling in the 1990s again, except without even a main screen for options. Seats, as usual, were tight and uncomfortable.

Good seat comfort ORF to ATL. Bad seat ATL to SEA (terrible lumbar support, hard, ouch)..

Because I was moved to an exit row, the snacks in economy comfort, the selection of snacks was better.

I upgraded to first. Quick and easy boarding. Comfortable seat with power and a nice IPA.

Probably not the fault of Delta but there was delay after delay after delay and I ended up getting home 4 hours later then I should have at 1:30 in the morning

My requested wheelchair never appeared. So many entertainment choices yet, I found little of interest and no internet option to search on my own. Both were minor issues.

No in flight service, no explanation - FC got service, C+ did not, unsure about Economy. No turbulence to speak of, so I guess another way to cut cost, or promote health and well being of Delta employees? Also, boarding in MEM combined zones, and with overhead space already full on both flights after Zone 2/ Diamond, presents a huge challenge to find a space for a bag. Delta, other than point A to B, is no longer reasonable to fly - very poor experiences, not even taking into account the chastising at the gate and rude crews, across the board.

It would have been better if the flight wasn't delayed by 2.5 hours

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Delta flight Delay for ,more that two hours i.e original flight was 6.30 PM and it starts at 8.45 PM, When we connect Delta team for meal vouchers as it is late arrival in designation,But we did not get it as per delta policy , which is not good for mid night arrival,

A lot things happened in this trip.The fly should be less stress.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

Some of the Air hostesses are not that friendly. Need improvement

Cops Airlines is fantastic! The level of care and professionalism provided by the entire crew was top rate.

We had a great flight just wished they had a tv so we can see a movie that would of made my trip excellent.

horrible service, food was an embarrassment, no charging for cellphones, stay away

the food served was an embarrassment. No connection for charging the cellphone... What a crappy airline.

Great experience with a crew always thinking in the passenger

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

Had to go through security at the gate again. Had to take off shoes and go through the whole thing again even though we have global entry. They asked us to check in items bought at duty free during our layover and since we checked our luggage at the original departure airport, they forced us to check in a small backpack. None of this ever happened with other airlines. In addition, no vegetarian food option and no snacks during a 7 hr flight. Luggage limits are unusually small. This is unacceptable. Will NEVER fly Copa again and will tell friends and family to avoid this airline.

Little warm on the plane and delayed for an hour

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Flight, food and crew were all good, friendly and very satisfactory.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

We found the chairs to be really uncomfortable. It’s also really unacceptable that no form of food or drink is included in a 6+ hour flight

Deplaning was a mess, I sat in business (seats are horrible) and the front door had a problem so we had to deplane from the rear exit. The stairs were not tall enough to reach so there was a large step down from the plane to the top of the stairs.

Staff are the rudest in the industry … awful customer service … will never fly Avianca again

We waited for one hour to deboard the plane after landing. That could be better

I handed in my suitcase in perfect condition at SAL Airport. And in MIA Airport I received it with one corner broken and the wheels bent.

I like the crew members they're very friendly. Clean plane. The flight was on time. I dont like the comfort my car seat its better that the plane seats. They charge for everything. This airline was very good. Now it's a low cost airline

No free snacks nor drinks on very short 30min flight. Entertainment system is over wifi to your own phone or tablet, which is good but often a show or movie just stops and refuses to continue

I like the crew they're very friendly. I don't like. on five hour flight they not offered snacks. Any drink. Not even coffee

6 hour flight and have to pay for everything 100 dollars to add a carry-on bag is insane

Horrible experience. Flight cancelled. Arrived at destination 12 hs later. No one gave us an answer or any information. Very very poor service. We won’t ever travel again with Avianca

Everything you need to know for your flight from Buenos Aires to Illinois

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.