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Cheap flights from Chicago O'Hare Intl Airport to Buenos Aires from $308

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 3/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Multiple Airlines Logo
6:34 pm - 5:05 am
ORD
-
EZE
32h 31m
3 stops
Multiple Airlines Logo
8:40 am - 10:10 pm
EZE
-
ORD
15h 30m
1 stop
$787Multiple Airlines
Mon, Apr 20 - Sun, Apr 26
Multiple Airlines Logo
5:15 am - 5:05 am
ORD
-
EZE
21h 50m
3 stops
Multiple Airlines Logo
8:40 am - 10:10 pm
EZE
-
ORD
15h 30m
1 stop
$790Multiple Airlines
Sat, Apr 18 - Sun, Apr 26
Multiple Airlines Logo
4:30 am - 12:05 am
ORD
-
EZE
17h 35m
1 stop
Multiple Airlines Logo
6:30 pm - 1:15 pm
EZE
-
ORD
20h 45m
2 stops
$791Multiple Airlines
Mon, May 18 - Wed, May 27
Multiple Airlines Logo
5:35 am - 12:05 am
ORD
-
EZE
16h 30m
1 stop
Multiple Airlines Logo
2:30 am - 7:48 pm
EZE
-
ORD
19h 18m
2 stops
$793Multiple Airlines
Wed, May 20 - Fri, May 29
Arajet Logo
5:35 am - 12:05 am
ORD
-
EZE
16h 30m
1 stop
Arajet Logo
9:15 pm - 10:10 pm
EZE
-
ORD
26h 55m
1 stop
$800Arajet
Wed, Apr 1 - Sat, May 2
Arajet Logo
4:30 am - 7:50 am
ORD
-
EZE
25h 20m
1 stop
Arajet Logo
9:15 pm - 11:40 pm
EZE
-
ORD
28h 25m
1 stop
$803Arajet
Mon, Apr 6 - Mon, Apr 13
Multiple Airlines Logo
6:45 am - 12:05 am
ORD
-
EZE
15h 20m
1 stop
Multiple Airlines Logo
4:45 pm - 11:21 am
EZE
-
ORD
20h 36m
2 stops
$804Multiple Airlines
Wed, Mar 25 - Thu, Apr 2
Multiple Airlines Logo
4:51 pm - 5:05 am
ORD
-
EZE
34h 14m
3 stops
Multiple Airlines Logo
4:45 am - 9:57 am
EZE
-
ORD
31h 12m
1 stop
$805Multiple Airlines
Fri, Apr 10 - Fri, Apr 17
Arajet Logo
5:45 am - 12:05 am
ORD
-
EZE
15h 20m
1 stop
Arajet Logo
8:40 am - 9:10 pm
EZE
-
ORD
15h 30m
1 stop
$810Arajet
Wed, Feb 25 - Sun, Mar 1
Multiple Airlines Logo
5:15 am - 5:05 am
ORD
-
EZE
21h 50m
3 stops
Multiple Airlines Logo
11:00 am - 11:40 pm
EZE
-
ORD
14h 40m
1 stop
$811Multiple Airlines
Thu, Apr 23 - Tue, Apr 28

Arajet flights from Chicago O'Hare Intl Airport to Buenos Aires

Our best Arajet deals on Chicago O'Hare Intl Airport to Buenos Aires flight tickets
Arajet
Apr 1
ORD5:35 amChicago O'Hare Intl
16h 30m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
May 2
EZE9:15 pmBuenos Aires Ministro Pistarini
26h 55m
1 stop
ORD10:10 pmChicago O'Hare Intl
$800
Arajet
Apr 6
ORD4:30 amChicago O'Hare Intl
25h 20m
1 stop
EZE7:50 amBuenos Aires Ministro Pistarini
Apr 13
EZE9:15 pmBuenos Aires Ministro Pistarini
28h 25m
1 stop
ORD11:40 pmChicago O'Hare Intl
$803
Arajet
Feb 25
ORD5:45 amChicago O'Hare Intl
15h 20m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Mar 1
EZE8:40 amBuenos Aires Ministro Pistarini
15h 30m
1 stop
ORD9:10 pmChicago O'Hare Intl
$810

Air Canada flights from Chicago O'Hare Intl Airport to Buenos Aires

Our best Air Canada deals on Chicago O'Hare Intl Airport to Buenos Aires flight tickets
Air Canada
Apr 1
ORD3:45 pmChicago O'Hare Intl
20h 45m
2 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Apr 8
EZE4:30 pmBuenos Aires Ministro Pistarini
19h 38m
2 stops
ORD10:08 amChicago O'Hare Intl
$854
Air Canada
Apr 19
ORD12:50 pmChicago O'Hare Intl
23h 40m
2 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Apr 27
EZE4:30 pmBuenos Aires Ministro Pistarini
19h 38m
2 stops
ORD10:08 amChicago O'Hare Intl
$859
Air Canada
Apr 18
ORD8:20 pmChicago O'Hare Intl
40h 10m
2 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Apr 29
EZE4:30 pmBuenos Aires Ministro Pistarini
20h 50m
2 stops
ORD11:20 amChicago O'Hare Intl
$863

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 January 15, 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

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 4/20

6:34 pm-5:05 am

3 stops32h 31m

Buenos Aires Ministro Pistarini

Sun 4/26

8:40 am-10:10 pm

1 stop15h 30m

$787

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 4/18

5:15 am-5:05 am

3 stops21h 50m

Buenos Aires Ministro Pistarini

Sun 4/26

8:40 am-10:10 pm

1 stop15h 30m

$790

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 5/18

4:30 am-12:05 am

1 stop17h 35m

Buenos Aires Ministro Pistarini

Wed 5/27

6:30 pm-1:15 pm

2 stops20h 45m

$791

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 5/20

5:35 am-12:05 am

1 stop16h 30m

Buenos Aires Ministro Pistarini

Fri 5/29

2:30 am-7:48 pm

2 stops19h 18m

$793

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 4/1

5:35 am-12:05 am

1 stop16h 30m

Buenos Aires Ministro Pistarini

Sat 5/2

9:15 pm-10:10 pm

1 stop26h 55m

$800

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 4/6

4:30 am-7:50 am

1 stop25h 20m

Buenos Aires Ministro Pistarini

Mon 4/13

9:15 pm-11:40 pm

1 stop28h 25m

$803

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 3/25

6:45 am-12:05 am

1 stop15h 20m

Buenos Aires Ministro Pistarini

Thu 4/2

4:45 pm-11:21 am

2 stops20h 36m

$804

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Fri 4/10

4:51 pm-5:05 am

3 stops34h 14m

Buenos Aires Ministro Pistarini

Fri 4/17

4:45 am-9:57 am

1 stop31h 12m

$805

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 2/25

5:45 am-12:05 am

1 stop15h 20m

Buenos Aires Ministro Pistarini

Sun 3/1

8:40 am-9:10 pm

1 stop15h 30m

$810

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Thu 4/23

5:15 am-5:05 am

3 stops21h 50m

Buenos Aires Ministro Pistarini

Tue 4/28

11:00 am-11:40 pm

1 stop14h 40m

$811

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 November. Flight prices, which tend to average around $1,015, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, 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 November, still average around $1,065.

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 $1,121 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 35% 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

14h 18m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Buenos Aires takes 14h 18m
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

  • 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 14h 18m 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
6.4
41 reviews
Search Arajet flights
Copa AirlinesPriceFrom $569Free CancellationRating
7.6
1,559 reviews
Search Copa Airlines flights
AviancaPriceFrom $726Free CancellationRating
6.6
2,492 reviews
Search Avianca flights
DeltaPriceFrom $951Free CancellationRating
7.9
8,048 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
9,163 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,015Free CancellationRating
7.2
11,129 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