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Cheap flights from Helena to Buenos Aires from $1,476

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to Buenos Aires departing on 3/16. 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 Helena to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:15 am - 8:20 am
HLN
-
EZE
23h 05m
2 stops
United Airlines Logo
10:55 pm - 9:25 pm
EZE
-
HLN
25h 30m
2 stops
$1,476United Airlines
Mon, Mar 16 - Mon, Mar 23
Delta Logo
1:02 pm - 9:00 am
HLN
-
EZE
16h 58m
2 stops
Delta Logo
10:25 pm - 10:30 pm
EZE
-
HLN
27h 05m
2 stops
$1,494Delta
Sun, Mar 15 - Mon, Mar 23
Delta Logo
1:02 pm - 9:00 am
HLN
-
EZE
16h 58m
2 stops
Delta Logo
10:25 pm - 10:30 pm
EZE
-
HLN
27h 05m
2 stops
$1,721Delta
Sun, Mar 15 - Sun, Mar 22
United Airlines Logo
2:30 pm - 6:20 am
HLN
-
EZE
60h 50m
2 stops
United Airlines Logo
9:05 pm - 1:38 pm
EZE
-
HLN
19h 33m
2 stops
$5,466United Airlines
Mon, Mar 16 - Mon, Mar 23
Delta Logo
5:30 am - 10:15 am
HLN
-
EZE
25h 45m
2 stops
Delta Logo
8:55 pm - 10:30 pm
EZE
-
HLN
28h 35m
2 stops
$10,091Delta
Sun, Mar 15 - Sun, Mar 22
Delta Logo
1:02 pm - 9:00 am
HLN
-
EZE
16h 58m
2 stops
Delta Logo
8:55 pm - 12:21 pm
EZE
-
HLN
18h 26m
2 stops
$12,161Delta
Tue, Mar 17 - Tue, Mar 24

United Airlines flights from Helena to Buenos Aires

Our best United Airlines deals on Helena to Buenos Aires flight tickets
United Airlines
Mar 16
HLN6:15 amHelena
23h 05m
2 stops
EZE8:20 amBuenos Aires Ministro Pistarini
Mar 23
EZE10:55 pmBuenos Aires Ministro Pistarini
25h 30m
2 stops
HLN9:25 pmHelena
$1,476
United Airlines
Mar 16
HLN2:30 pmHelena
60h 50m
2 stops
EZE6:20 amBuenos Aires Ministro Pistarini
Mar 23
EZE9:05 pmBuenos Aires Ministro Pistarini
19h 33m
2 stops
HLN1:38 pmHelena
$5,466

Delta flights from Helena to Buenos Aires

Our best Delta deals on Helena to Buenos Aires flight tickets
Delta
Mar 15
HLN1:02 pmHelena
16h 58m
2 stops
EZE9:00 amBuenos Aires Ministro Pistarini
Mar 23
EZE10:25 pmBuenos Aires Ministro Pistarini
27h 05m
2 stops
HLN10:30 pmHelena
$1,494
Delta
Mar 15
HLN1:02 pmHelena
16h 58m
2 stops
EZE9:00 amBuenos Aires Ministro Pistarini
Mar 22
EZE10:25 pmBuenos Aires Ministro Pistarini
27h 05m
2 stops
HLN10:30 pmHelena
$1,721
Delta
Mar 15
HLN5:30 amHelena
25h 45m
2 stops
EZE10:15 amBuenos Aires Ministro Pistarini
Mar 22
EZE8:55 pmBuenos Aires Ministro Pistarini
28h 35m
2 stops
HLN10:30 pmHelena
$10,091

momondo Fare Finder

 
Customize your flight search to find flights from Helena 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 February 14, 2026.
Use the filters below to find and compare flights from Helena to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HelenaBuenos Aires

HLN - EZE

HLNEZE

Helena

Mon 3/16

6:15 am-8:20 am

2 stops23h 05m

Buenos Aires Ministro Pistarini

Mon 3/23

10:55 pm-9:25 pm

2 stops25h 30m

$1,476

HelenaBuenos Aires

HLN - EZE

HLNEZE

Helena

Sun 3/15

1:02 pm-9:00 am

2 stops16h 58m

Buenos Aires Ministro Pistarini

Mon 3/23

10:25 pm-10:30 pm

2 stops27h 05m

$1,494

HelenaBuenos Aires

HLN - EZE

HLNEZE

Helena

Sun 3/15

1:02 pm-9:00 am

2 stops16h 58m

Buenos Aires Ministro Pistarini

Sun 3/22

10:25 pm-10:30 pm

2 stops27h 05m

$1,721

HelenaBuenos Aires

HLN - EZE

HLNEZE

Helena

Mon 3/16

2:30 pm-6:20 am

2 stops60h 50m

Buenos Aires Ministro Pistarini

Mon 3/23

9:05 pm-1:38 pm

2 stops19h 33m

$5,466

HelenaBuenos Aires

HLN - EZE

HLNEZE

Helena

Sun 3/15

5:30 am-10:15 am

2 stops25h 45m

Buenos Aires Ministro Pistarini

Sun 3/22

8:55 pm-10:30 pm

2 stops28h 35m

$10,091

HelenaBuenos Aires

HLN - EZE

HLNEZE

Helena

Tue 3/17

1:02 pm-9:00 am

2 stops16h 58m

Buenos Aires Ministro Pistarini

Tue 3/24

8:55 pm-12:21 pm

2 stops18h 26m

$12,161

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Helena to Buenos Aires

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

Cheap Helena to Buenos Aires (HLN to BUE) flight deals and tips

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

Fastest flight time

23h 05m

Direct flights

None
The fastest flight from Helena to Buenos Aires takes 23h 05m
There are no direct flights from Helena to Buenos Aires. There are no popular flight routes from Helena to Buenos Aires.
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  • How far is Helena to Buenos Aires by plane?

    A flight from Helena to Buenos Aires will travel around 6521.1 mi. Typically, this will take 23h 05m by plane in normal conditions.

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

    Prices for flights from Helena Airport to Buenos Aires were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Helena Airport to Buenos Aires.

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

    The travel and health documents required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Helena to Buenos Aires?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Helena from Buenos Aires. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Helena to Buenos Aires with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

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

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

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

Yes. All flights to Buenos Aires from Helena on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Helena 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 Helena to Buenos Aires.

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

Yes momondo offers price alerts on flights to Buenos Aires from Helena. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Mon 3/16
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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