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Cheap flights from Chicago O'Hare Intl Airport to Buenos Aires from $303

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Buenos Aires departing on 6/22. 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
0 bags

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Find the cheapest flights from Chicago O'Hare Intl Airport to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Arajet Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Arajet Logo
9:15 pm - 11:12 am
EZE
-
ORD
15h 57m
1 stop
$838Arajet
Mon, Sep 7 - Fri, Sep 18
Arajet Logo
12:12 pm - 4:10 am
ORD
-
EZE
13h 58m
1 stop
Arajet Logo
8:40 am - 10:10 pm
EZE
-
ORD
15h 30m
1 stop
$847Arajet
Sat, Aug 8 - Sun, Aug 23
Multiple Airlines Logo
8:30 am - 3:40 pm
ORD
-
EZE
29h 10m
2 stops
Multiple Airlines Logo
2:49 pm - 11:15 pm
EZE
-
ORD
34h 26m
2 stops
$848Multiple Airlines
Tue, May 12 - Tue, May 19
Multiple Airlines Logo
10:00 am - 6:30 pm
ORD
-
AEP
30h 30m
3 stops
Multiple Airlines Logo
11:55 am - 9:20 pm
AEP
-
ORD
35h 25m
2 stops
$850Multiple Airlines
Sun, May 3 - Mon, May 11
Multiple Airlines Logo
4:30 am - 8:15 pm
ORD
-
EZE
13h 45m
1 stop
Multiple Airlines Logo
4:45 am - 11:26 pm
EZE
-
ORD
20h 41m
2 stops
$854Multiple Airlines
Mon, May 4 - Wed, Jun 3
Multiple Airlines Logo
9:20 am - 8:30 am
ORD
-
AEP
21h 10m
2 stops
Multiple Airlines Logo
4:40 am - 11:56 pm
AEP
-
ORD
21h 16m
2 stops
$854Multiple Airlines
Fri, May 29 - Fri, Jun 5
Multiple Airlines Logo
9:20 am - 9:16 am
ORD
-
EZE
21h 56m
2 stops
Multiple Airlines Logo
7:10 am - 11:56 pm
EZE
-
ORD
18h 46m
2 stops
$856Multiple Airlines
Fri, May 8 - Fri, May 22
Multiple Airlines Logo
9:20 am - 9:20 pm
ORD
-
AEP
34h 00m
3 stops
Multiple Airlines Logo
3:45 pm - 11:47 pm
AEP
-
ORD
34h 02m
3 stops
$856Multiple Airlines
Mon, Jun 1 - Mon, Jun 8
Multiple Airlines Logo
7:33 pm - 3:23 am
ORD
-
EZE
29h 50m
3 stops
Multiple Airlines Logo
4:50 pm - 11:56 pm
EZE
-
ORD
33h 06m
3 stops
$857Multiple Airlines
Thu, May 14 - Wed, May 27
Multiple Airlines Logo
4:30 am - 8:15 pm
ORD
-
EZE
13h 45m
1 stop
Multiple Airlines Logo
1:10 pm - 7:51 pm
EZE
-
ORD
32h 41m
2 stops
$858Multiple Airlines
Mon, May 4 - Mon, Jun 1

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LATAM Airlines flights from Chicago O'Hare Intl Airport to Buenos Aires

Our best LATAM Airlines deals on Chicago O'Hare Intl Airport to Buenos Aires flight tickets
LATAM Airlines
May 12
ORD11:26 amChicago O'Hare Intl
20h 19m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
May 19
EZE1:10 pmBuenos Aires Ministro Pistarini
26h 37m
2 stops
ORD1:47 pmChicago O'Hare Intl
$874
LATAM Airlines
May 3
ORD5:53 pmChicago O'Hare Intl
25h 37m
2 stops
AEP9:30 pmBuenos Aires Jorge Newbery
May 7
AEP7:20 pmBuenos Aires Jorge Newbery
24h 29m
2 stops
ORD5:49 pmChicago O'Hare Intl
$907
LATAM Airlines
May 16
ORD8:10 amChicago O'Hare Intl
23h 35m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
May 28
EZE8:10 pmBuenos Aires Ministro Pistarini
16h 06m
1 stop
ORD10:16 amChicago O'Hare Intl
$909

Copa Airlines flights from Chicago O'Hare Intl Airport to Buenos Aires

Our best Copa Airlines deals on Chicago O'Hare Intl Airport to Buenos Aires flight tickets
Copa Airlines
May 12
ORD8:02 amChicago O'Hare Intl
16h 28m
1 stop
EZE2:30 amBuenos Aires Ministro Pistarini
May 19
EZE9:02 amBuenos Aires Ministro Pistarini
18h 13m
1 stop
ORD1:15 amChicago O'Hare Intl
$895
Copa Airlines
May 16
ORD8:02 amChicago O'Hare Intl
18h 14m
1 stop
EZE4:16 amBuenos Aires Ministro Pistarini
May 27
EZE2:17 amBuenos Aires Ministro Pistarini
24h 58m
1 stop
ORD1:15 amChicago O'Hare Intl
$918

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 April 17, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport 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

Mon 9/7

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Fri 9/18

9:15 pm-11:12 am

1 stop15h 57m

$838
Quickest round-trip

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 8/8

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Sun 8/23

8:40 am-10:10 pm

1 stop15h 30m

$847

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Tue 5/12

8:30 am-3:40 pm

2 stops29h 10m

Buenos Aires Ministro Pistarini

Tue 5/19

2:49 pm-11:15 pm

2 stops34h 26m

$848

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sun 5/3

10:00 am-6:30 pm

3 stops30h 30m

Buenos Aires Jorge Newbery

Mon 5/11

11:55 am-9:20 pm

2 stops35h 25m

$850

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 5/4

4:30 am-8:15 pm

1 stop13h 45m

Buenos Aires Ministro Pistarini

Wed 6/3

4:45 am-11:26 pm

2 stops20h 41m

$854

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Fri 5/29

9:20 am-8:30 am

2 stops21h 10m

Buenos Aires Jorge Newbery

Fri 6/5

4:40 am-11:56 pm

2 stops21h 16m

$854

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Fri 5/8

9:20 am-9:16 am

2 stops21h 56m

Buenos Aires Ministro Pistarini

Fri 5/22

7:10 am-11:56 pm

2 stops18h 46m

$856

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Mon 6/1

9:20 am-9:20 pm

3 stops34h 00m

Buenos Aires Jorge Newbery

Mon 6/8

3:45 pm-11:47 pm

3 stops34h 02m

$856

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Thu 5/14

7:33 pm-3:23 am

3 stops29h 50m

Buenos Aires Ministro Pistarini

Wed 5/27

4:50 pm-11:56 pm

3 stops33h 06m

$857

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 5/4

4:30 am-8:15 pm

1 stop13h 45m

Buenos Aires Ministro Pistarini

Mon 6/1

1:10 pm-7:51 pm

2 stops32h 41m

$858

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 Chicago O'Hare Intl Airport 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 typical price of a round-trip flight between Chicago O'Hare Intl Airport and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Chicago O'Hare Intl Airport is in March. Flight prices, which tend to average around $952, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Buenos Aires from Chicago O'Hare Intl Airport during July instead. Flights to Buenos Aires in July, while not as cheap as those in March, still average around $970.

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

You are more likely to see cheaper flights to Buenos Aires from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,120 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Chicago O'Hare Intl Airport for as low as $760 on momondo.

Can stopping save me money on Chicago O'Hare Intl Airport to Buenos Aires flights?

You could potentially save up to 36% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Buenos Aires flight.

When to book flights from Chicago O'Hare Intl Airport to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Buenos Aires (ORD to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Buenos Aires

Fastest flight time

13h 52m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Buenos Aires takes 13h 52m
There are no direct flights from Chicago O'Hare Intl Airport to Buenos Aires. There are no popular flight routes from Chicago O'Hare Intl Airport to Buenos Aires.
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Buenos Aires

  • How far is Chicago O'Hare Intl to Buenos Aires by plane?

    Buenos Aires is 5608.8 mi away from Chicago O'Hare Intl. Typically, this will take 13h 52m by plane in normal conditions.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Buenos Aires?

    Prices for flights from Chicago O'Hare Intl Airport to Buenos Aires are updated daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Buenos Aires?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport to Buenos Aires.

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

    The required travel and health documents for your Buenos Aires trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Buenos Aires. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Chicago O'Hare Intl Airport to Buenos Aires?

Best airlines flying from Chicago O'Hare Intl Airport to Buenos Aires

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
ArajetPriceFrom $360Free CancellationRating
6.5
47 reviews
Search Arajet flights
Copa AirlinesPriceFrom $569Free CancellationRating
7.5
1,575 reviews
Search Copa Airlines flights
LATAM AirlinesPriceFrom $727Free CancellationRating
7.4
1,907 reviews
Search LATAM Airlines flights
AviancaPriceFrom $750Free CancellationRating
6.5
2,511 reviews
Search Avianca flights
DeltaPriceFrom $951Free CancellationRating
7.9
8,409 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
9,600 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,004Free CancellationRating
7.1
11,592 reviews
Search American Airlines flights

Why use momondo?

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

It is quick and easy to find Chicago to Buenos Aires flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Buenos Aires that suits you.

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

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

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

Once all potential Chicago to Buenos Aires flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Chicago 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