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Cheap flights from Chicago O'Hare Intl Airport to Buenos Aires from $207

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 9/7. 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

Discover deals from 900+ travel sites with momondo.

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
9:45 am - 11:40 pm
EZE
-
ORD
15h 55m
1 stop
$494Arajet
Mon, Sep 7 - Thu, Sep 24
Arajet Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Arajet Logo
9:45 am - 11:40 pm
EZE
-
ORD
15h 55m
1 stop
$562Arajet
Mon, Sep 14 - Thu, Sep 24
Arajet Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Arajet Logo
9:45 am - 11:40 pm
EZE
-
ORD
15h 55m
1 stop
$566Arajet
Mon, Sep 14 - Thu, Sep 24
Arajet Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Arajet Logo
2:45 am - 10:10 pm
EZE
-
ORD
21h 25m
1 stop
$584Arajet
Mon, Sep 7 - Sat, Sep 19
Arajet Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Arajet Logo
2:45 am - 10:10 pm
EZE
-
ORD
21h 25m
1 stop
$585Arajet
Mon, Sep 7 - Sat, Sep 19
Multiple Airlines Logo
12:44 am - 3:45 am
ORD
-
EZE
25h 01m
2 stops
Multiple Airlines Logo
8:40 am - 10:10 pm
EZE
-
ORD
15h 30m
1 stop
$588Multiple Airlines
Mon, Aug 24 - Sun, Aug 30
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
$596Arajet
Sat, Aug 22 - Sun, Aug 30
Multiple Airlines Logo
5:30 am - 1:05 pm
ORD
-
EZE
29h 35m
2 stops
Multiple Airlines Logo
9:45 am - 11:40 pm
EZE
-
ORD
15h 55m
1 stop
$614Multiple Airlines
Mon, Sep 7 - Thu, Sep 24
Multiple Airlines Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Multiple Airlines Logo
3:55 am - 11:47 pm
EZE
-
ORD
45h 52m
2 stops
$659Multiple Airlines
Mon, Sep 7 - Sun, Sep 13
Arajet Logo
12:12 pm - 4:10 am
ORD
-
EZE
13h 58m
1 stop
Arajet Logo
9:45 am - 11:40 pm
EZE
-
ORD
15h 55m
1 stop
$671Arajet
Sat, Aug 22 - Thu, Sep 3

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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
Sep 7
ORD5:30 amChicago O'Hare Intl
16h 35m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Sep 24
EZE9:45 amBuenos Aires Ministro Pistarini
15h 55m
1 stop
ORD11:40 pmChicago O'Hare Intl
$494
Arajet
Sep 14
ORD5:30 amChicago O'Hare Intl
16h 35m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Sep 24
EZE9:45 amBuenos Aires Ministro Pistarini
15h 55m
1 stop
ORD11:40 pmChicago O'Hare Intl
$562
Arajet
Sep 14
ORD5:30 amChicago O'Hare Intl
16h 35m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Sep 24
EZE9:45 amBuenos Aires Ministro Pistarini
15h 55m
1 stop
ORD11:40 pmChicago O'Hare Intl
$566

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

Our best Avianca deals on Chicago O'Hare Intl Airport to Buenos Aires flight tickets
Avianca
Jul 26
ORD11:20 pmChicago O'Hare Intl
14h 20m
1 stop
EZE3:40 pmBuenos Aires Ministro Pistarini
Aug 27
EZE4:50 pmBuenos Aires Ministro Pistarini
30h 30m
1 stop
ORD9:20 pmChicago O'Hare Intl
$1,309
Avianca
Jul 26
ORD11:20 pmChicago O'Hare Intl
14h 20m
1 stop
EZE3:40 pmBuenos Aires Ministro Pistarini
Jul 28
EZE7:10 amBuenos Aires Ministro Pistarini
16h 10m
1 stop
ORD9:20 pmChicago O'Hare Intl
$1,396
Avianca
Jul 26
ORD11:20 pmChicago O'Hare Intl
14h 20m
1 stop
EZE3:40 pmBuenos Aires Ministro Pistarini
Aug 25
EZE1:35 amBuenos Aires Ministro Pistarini
18h 55m
2 stops
ORD6:30 pmChicago O'Hare Intl
$1,411

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 July 25, 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

Thu 9/24

9:45 am-11:40 pm

1 stop15h 55m

$494

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 9/14

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Thu 9/24

9:45 am-11:40 pm

1 stop15h 55m

$562

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 9/14

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Thu 9/24

9:45 am-11:40 pm

1 stop15h 55m

$566

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

Sat 9/19

2:45 am-10:10 pm

1 stop21h 25m

$584

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

Sat 9/19

2:45 am-10:10 pm

1 stop21h 25m

$585

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 8/24

12:44 am-3:45 am

2 stops25h 01m

Buenos Aires Ministro Pistarini

Sun 8/30

8:40 am-10:10 pm

1 stop15h 30m

$588
Quickest round-trip

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 8/22

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Sun 8/30

8:40 am-10:10 pm

1 stop15h 30m

$596

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 9/7

5:30 am-1:05 pm

2 stops29h 35m

Buenos Aires Ministro Pistarini

Thu 9/24

9:45 am-11:40 pm

1 stop15h 55m

$614

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

Sun 9/13

3:55 am-11:47 pm

2 stops45h 52m

$659

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 8/22

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Thu 9/3

9:45 am-11:40 pm

1 stop15h 55m

$671

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?

Prices are currently low for flights on this route.

Typical prices usually range from $889 to $1,211.
The lowest price recently found on this route was $494.

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 $948, 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 May instead. Flights to Buenos Aires in May, while not as cheap as those in November, still average around $1,003.

How far in advance should I book a flight from Chicago O'Hare Intl Airport 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 $1,152 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 $747 on momondo.

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

You could potentially save up to 52% 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 58m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Buenos Aires takes 13h 58m
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 58m 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
6.3
51 reviews
Search Arajet flights
LATAM AirlinesPriceFrom $727Free CancellationRating
7.4
1,965 reviews
Search LATAM Airlines flights
Copa AirlinesPriceFrom $768Free CancellationRating
7.6
1,560 reviews
Search Copa Airlines flights
AviancaPriceFrom $792Free CancellationRating
6.5
2,520 reviews
Search Avianca flights
DeltaPriceFrom $901Free CancellationRating
7.8
8,486 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
10,035 reviews
Search United Airlines flights
American AirlinesPriceFrom $972Free CancellationRating
7.1
11,847 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