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Cheap flights from Illinois to Buenos Aires from $267

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Buenos Aires departing on 6/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Illinois to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
7:45 pm - 11:30 am
ORD
-
EZE
37h 45m
2 stops
LATAM Airlines Logo
8:10 pm - 4:55 pm
EZE
-
ORD
22h 45m
1 stop
$883LATAM Airlines
Sun, May 3 - Sun, May 10
Multiple Airlines Logo
3:52 pm - 3:23 am
ORD
-
EZE
33h 31m
2 stops
Multiple Airlines Logo
9:15 pm - 11:12 am
EZE
-
ORD
15h 57m
1 stop
$885Multiple Airlines
Sun, May 3 - Fri, Jun 5
Multiple Airlines Logo
10:55 am - 8:30 am
ORD
-
AEP
19h 35m
2 stops
Multiple Airlines Logo
9:30 pm - 9:20 pm
AEP
-
ORD
25h 50m
2 stops
$885Multiple Airlines
Fri, Apr 10 - Sun, Apr 12
Arajet Logo
12:12 pm - 4:10 am
ORD
-
EZE
13h 58m
1 stop
Arajet Logo
9:15 pm - 11:12 am
EZE
-
ORD
15h 57m
1 stop
$887Arajet
Sat, Apr 18 - Fri, Apr 24
Avianca Logo
11:20 pm - 3:40 pm
ORD
-
EZE
14h 20m
1 stop
Avianca Logo
7:10 am - 9:20 pm
EZE
-
ORD
16h 10m
1 stop
$891Avianca
Sun, May 3 - Sun, May 10
Avianca Logo
11:20 pm - 3:40 pm
ORD
-
EZE
14h 20m
1 stop
Avianca Logo
7:10 am - 9:20 pm
EZE
-
ORD
16h 10m
1 stop
$892Avianca
Sun, Apr 19 - Sun, Apr 26
Delta Logo
5:21 pm - 9:45 am
MDW
-
EZE
14h 24m
1 stop
Delta Logo
8:10 pm - 12:42 pm
EZE
-
MDW
18h 32m
2 stops
$961Delta
Mon, May 4 - Mon, May 18
Delta Logo
1:05 pm - 9:20 am
MDW
-
EZE
18h 15m
2 stops
Delta Logo
10:40 pm - 11:56 am
EZE
-
MDW
15h 16m
2 stops
$1,011Delta
Mon, Jun 15 - Mon, Jun 22
United Airlines Logo
8:15 pm - 8:00 am
STL
-
EZE
33h 45m
2 stops
United Airlines Logo
9:00 pm - 5:42 pm
EZE
-
STL
22h 42m
1 stop
$1,061United Airlines
Sun, Jun 14 - Tue, Jun 23
United Airlines Logo
6:30 pm - 8:00 am
STL
-
EZE
35h 30m
1 stop
United Airlines Logo
9:00 pm - 5:42 pm
EZE
-
STL
22h 42m
1 stop
$1,066United Airlines
Sun, Jun 14 - Tue, Jun 23

Arajet flights from Illinois to Buenos Aires

Our best Arajet deals on Illinois to Buenos Aires flight tickets
Arajet
Apr 18
ORD12:12 pmChicago O'Hare Intl
13h 58m
1 stop
EZE4:10 amBuenos Aires Ministro Pistarini
Apr 24
EZE9:15 pmBuenos Aires Ministro Pistarini
15h 57m
1 stop
ORD11:12 amChicago O'Hare Intl
$887
Arajet
Apr 20
ORD4:30 amChicago O'Hare Intl
13h 45m
1 stop
EZE8:15 pmBuenos Aires Ministro Pistarini
Apr 24
EZE9:15 pmBuenos Aires Ministro Pistarini
15h 57m
1 stop
ORD11:12 amChicago O'Hare Intl
$903
Arajet
May 9
ORD12:12 pmChicago O'Hare Intl
13h 58m
1 stop
EZE4:10 amBuenos Aires Ministro Pistarini
Jun 4
EZE11:00 amBuenos Aires Ministro Pistarini
14h 40m
1 stop
ORD11:40 pmChicago O'Hare Intl
$914

Air Canada flights from Illinois to Buenos Aires

Our best Air Canada deals on Illinois to Buenos Aires flight tickets
Air Canada
May 26
STL1:05 pmLambert-St Louis
47h 25m
3 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Jun 3
EZE4:35 pmBuenos Aires Ministro Pistarini
53h 50m
3 stops
STL8:25 pmLambert-St Louis
$1,145
Air Canada
May 2
STL1:05 pmLambert-St Louis
47h 25m
3 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
May 7
EZE4:35 pmBuenos Aires Ministro Pistarini
53h 50m
3 stops
STL8:25 pmLambert-St Louis
$1,205
Air Canada
May 26
STL1:05 pmLambert-St Louis
23h 25m
2 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Jun 3
EZE4:35 pmBuenos Aires Ministro Pistarini
29h 50m
3 stops
STL8:25 pmLambert-St Louis
$1,252

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 20, 2026.
Use the filters below to find and compare flights from Illinois to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sun 5/3

7:45 pm-11:30 am

2 stops37h 45m

Buenos Aires Ministro Pistarini

Sun 5/10

8:10 pm-4:55 pm

1 stop22h 45m

$883

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sun 5/3

3:52 pm-3:23 am

2 stops33h 31m

Buenos Aires Ministro Pistarini

Fri 6/5

9:15 pm-11:12 am

1 stop15h 57m

$885

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Fri 4/10

10:55 am-8:30 am

2 stops19h 35m

Buenos Aires Jorge Newbery

Sun 4/12

9:30 pm-9:20 pm

2 stops25h 50m

$885
Quickest round-trip

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 4/18

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Fri 4/24

9:15 pm-11:12 am

1 stop15h 57m

$887

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sun 5/3

11:20 pm-3:40 pm

1 stop14h 20m

Buenos Aires Ministro Pistarini

Sun 5/10

7:10 am-9:20 pm

1 stop16h 10m

$891

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sun 4/19

11:20 pm-3:40 pm

1 stop14h 20m

Buenos Aires Ministro Pistarini

Sun 4/26

7:10 am-9:20 pm

1 stop16h 10m

$892

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

Mon 5/4

5:21 pm-9:45 am

1 stop14h 24m

Buenos Aires Ministro Pistarini

Mon 5/18

8:10 pm-12:42 pm

2 stops18h 32m

$961

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

Mon 6/15

1:05 pm-9:20 am

2 stops18h 15m

Buenos Aires Ministro Pistarini

Mon 6/22

10:40 pm-11:56 am

2 stops15h 16m

$1,011

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 6/14

8:15 pm-8:00 am

2 stops33h 45m

Buenos Aires Ministro Pistarini

Tue 6/23

9:00 pm-5:42 pm

1 stop22h 42m

$1,061

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 6/14

6:30 pm-8:00 am

1 stop35h 30m

Buenos Aires Ministro Pistarini

Tue 6/23

9:00 pm-5:42 pm

1 stop22h 42m

$1,066

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from Illinois to Buenos Aires

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Illinois is in April. Flight prices, which tend to average around $956, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Buenos Aires from Illinois during October instead. Flights to Buenos Aires in October, while not as cheap as those in April, still average around $960.

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

You are more likely to see cheaper flights to Buenos Aires from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,123 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Illinois for as low as $760 on momondo.

Can stopping save me money on Illinois to Buenos Aires flights?

You could potentially save up to 40% on your flight if you consider stops on a Illinois to Buenos Aires flight.

Cheap Illinois to Buenos Aires flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Buenos Aires

Fastest flight time

13h 11m

Direct flights

None
The fastest flight from Illinois to Buenos Aires takes 13h 11m
There are no direct flights from Illinois to Buenos Aires. There are no popular flight routes from Illinois to Buenos Aires.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Buenos Aires?

    Prices for flights from Illinois to Buenos Aires are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Buenos Aires?

  • How old do you have to be to fly from Illinois to Buenos Aires?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Buenos Aires

Compare and see reviews for airlines that fly from Illinois to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
ArajetPriceFrom $360Free CancellationRating
6.4
46 reviews
Search Arajet flights
Copa AirlinesPriceFrom $569Free CancellationRating
7.5
1,573 reviews
Search Copa Airlines flights
LATAM AirlinesPriceFrom $727Free CancellationRating
7.4
1,915 reviews
Search LATAM Airlines flights
AviancaPriceFrom $750Free CancellationRating
6.5
2,503 reviews
Search Avianca flights
DeltaPriceFrom $951Free CancellationRating
7.9
8,303 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
9,444 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,015Free CancellationRating
7.1
11,483 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Buenos Aires?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Buenos Aires. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to Buenos Aires with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Buenos Aires flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Buenos Aires?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Buenos Aires.

I’m not ready to book a flight from Illinois to Buenos Aires right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to Buenos Aires flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport