Cheap flights from Illinois to Buenos Aires from $325
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 5/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Round-trip
1 adult
Economy
0 bags
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Cheap round-trip flights
These are some of the best round-trip flight deals from Illinois to Buenos Aires that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from Illinois to Buenos Aires.
Cheap last minute flights
Planning a quick getaway from Illinois to Buenos Aires? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to Buenos Aires, so you can enjoy a seamless trip without layovers.
Cheap bus & train deals from Illinois to Buenos Aires
Find recent round-trip train or bus tickets from Illinois to Buenos Aires.
All round-trip flight deals to Buenos Aires
The cheapest plane tickets to Buenos Aires found on KAYAK recently.
Air Canada flights from Illinois to Buenos Aires
Our best Air Canada deals on Illinois to Buenos Aires flight tickets
Air Canada![Air Canada]()
Mar 12![Air Canada]()
Mar 19
ORD3:35 pmChicago O'Hare Intl
20h 50m
2 stops
EZE2:25 pmBuenos Aires Ministro Pistarini
EZE4:00 pmBuenos Aires Ministro Pistarini
20h 54m
2 stops
ORD10:54 amChicago O'Hare Intl
Air Canada![Air Canada]()
Mar 12![Air Canada]()
Mar 19
ORD3:35 pmChicago O'Hare Intl
20h 50m
2 stops
EZE2:25 pmBuenos Aires Ministro Pistarini
EZE4:00 pmBuenos Aires Ministro Pistarini
24h 45m
3 stops
ORD2:45 pmChicago O'Hare Intl
United Airlines flights from Illinois to Buenos Aires
Our best United Airlines deals on Illinois to Buenos Aires flight tickets
United Airlines![United Airlines]()
Mar 19![United Airlines]()
Apr 1
STL8:40 amLambert-St Louis
19h 40m
1 stop
EZE6:20 amBuenos Aires Ministro Pistarini
EZE9:00 pmBuenos Aires Ministro Pistarini
19h 36m
1 stop
STL2:36 pmLambert-St Louis
United Airlines![United Airlines]()
Mar 19![United Airlines]()
Apr 1
STL8:40 amLambert-St Louis
21h 40m
1 stop
EZE8:20 amBuenos Aires Ministro Pistarini
EZE9:00 pmBuenos Aires Ministro Pistarini
20h 47m
2 stops
STL3:47 pmLambert-St Louis
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
Prices
Airlines
What is the cheapest month to fly to Buenos Aires?
The cheapest month to fly to Buenos Aires from Illinois is in May. Flight prices, which tend to average around $1,013, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Buenos Aires from Illinois during September instead. Flights to Buenos Aires in September, while not as cheap as those in May, still average around $1,079.
What is the cheapest day to depart on your flight to Buenos Aires?
On average, the least expensive day to fly to Buenos Aires from Illinois is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,133. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Thursday is $1,268.
What is the cheapest time of day to depart on your flight to Buenos Aires?
Our most recent data shows that the best time of day to fly to Buenos Aires is in the evening. Flights from Illinois to Buenos Aires during this time can be as low as $1,103. Try not to purchase tickets at noon because they tend to be around $1,268. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Buenos Aires?
Most flyers found that booking tickets 20 days in advance of their planned departure date is the best time to get cheap flights to Buenos Aires. During this timeframe, flight prices are around $1,204. Keep in mind that you might also find cheap flights to Buenos Aires outside of this time window. In fact, momondo users recently found flights from Illinois to Buenos Aires for $897.
What is the cheapest airline that flies from Illinois to Buenos Aires?
Avianca, Air Canada, and American Airlines are the most popular carriers operating from Illinois to Buenos Aires
What airlines fly to Buenos Aires?
American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Buenos Aires from Illinois according to our data. American Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 6 different airlines that fly to Buenos Aires on a routine basis, so you have a few additional options to choose from.
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
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?
As of January 2025, there are 6 operators available to choose from 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 | ||
|---|---|---|---|---|---|
| PriceFrom $762 | Free Cancellation | Rating 6.9 2,564 reviews | |||
| PriceFrom $844 | Free Cancellation | Rating 8.0 8,501 reviews | |||
| PriceFrom $916 | Free Cancellation | Rating 7.6 1,648 reviews | |||
| PriceFrom $1,023 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $1,060 | Free Cancellation | Rating 7.4 8,944 reviews | |||
| PriceFrom $1,085 | Free Cancellation | Rating 7.5 1,847 reviews |
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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