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Cheap flights from Montana to Buenos Aires from $651

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Buenos Aires departing on 7/6. 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

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Find the cheapest flights from Montana to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:05 am - 8:00 am
BIL
-
EZE
23h 55m
2 stops
United Airlines Logo
9:00 pm - 5:16 pm
EZE
-
BIL
23h 16m
2 stops
$1,596United Airlines
Tue, May 12 - Tue, May 19
United Airlines Logo
10:35 am - 8:00 am
BIL
-
EZE
18h 25m
2 stops
United Airlines Logo
9:00 pm - 8:57 pm
EZE
-
BIL
26h 57m
2 stops
$1,636United Airlines
Sun, May 10 - Sun, May 17
United Airlines Logo
6:15 am - 8:00 am
HLN
-
EZE
22h 45m
2 stops
United Airlines Logo
9:00 pm - 9:46 pm
EZE
-
HLN
51h 46m
2 stops
$1,659United Airlines
Sat, May 9 - Sat, May 16
United Airlines Logo
2:29 pm - 8:00 am
HLN
-
EZE
38h 31m
2 stops
United Airlines Logo
9:00 pm - 4:05 pm
EZE
-
HLN
22h 05m
2 stops
$1,672United Airlines
Sat, Sep 19 - Wed, Sep 23
United Airlines Logo
6:15 am - 8:00 am
HLN
-
EZE
46h 45m
2 stops
United Airlines Logo
9:00 pm - 8:59 pm
EZE
-
HLN
26h 59m
2 stops
$1,713United Airlines
Sat, Sep 19 - Wed, Sep 23
Multiple Airlines Logo
10:35 am - 9:20 am
BIL
-
EZE
19h 45m
3 stops
Multiple Airlines Logo
1:10 pm - 1:23 pm
EZE
-
BIL
27h 13m
2 stops
$4,478Multiple Airlines
Tue, May 12 - Tue, May 19
United Airlines Logo
5:00 am - 8:00 am
BIL
-
EZE
24h 00m
2 stops
United Airlines Logo
9:00 pm - 10:20 pm
EZE
-
BIL
28h 20m
2 stops
$5,591United Airlines
Thu, Jul 16 - Sat, Jul 25
Multiple Airlines Logo
7:59 pm - 9:20 am
BZN
-
EZE
34h 21m
2 stops
Multiple Airlines Logo
8:10 pm - 1:09 pm
EZE
-
BZN
19h 59m
1 stop
$5,687Multiple Airlines
Sun, May 3 - Wed, May 13
LATAM Airlines Logo
2:53 pm - 1:00 am
BZN
-
EZE
55h 07m
2 stops
LATAM Airlines Logo
7:35 am - 1:09 pm
EZE
-
BZN
32h 34m
3 stops
$5,762LATAM Airlines
Sun, May 3 - Wed, May 13
Delta Logo
6:25 am - 9:20 am
BIL
-
EZE
23h 55m
2 stops
Delta Logo
1:10 pm - 10:24 pm
EZE
-
BIL
36h 14m
2 stops
$6,281Delta
Wed, Apr 8 - Fri, Apr 17

United Airlines flights from Montana to Buenos Aires

Our best United Airlines deals on Montana to Buenos Aires flight tickets
United Airlines
May 12
BIL5:05 amBillings Logan Intl
23h 55m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
May 19
EZE9:00 pmBuenos Aires Ministro Pistarini
23h 16m
2 stops
BIL5:16 pmBillings Logan Intl
$1,596
United Airlines
May 10
BIL10:35 amBillings Logan Intl
18h 25m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
May 17
EZE9:00 pmBuenos Aires Ministro Pistarini
26h 57m
2 stops
BIL8:57 pmBillings Logan Intl
$1,636
United Airlines
May 9
HLN6:15 amHelena
22h 45m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
May 16
EZE9:00 pmBuenos Aires Ministro Pistarini
51h 46m
2 stops
HLN9:46 pmHelena
$1,659

momondo Fare Finder

 
Customize your flight search to find flights from Montana 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 March 29, 2026.
Use the filters below to find and compare flights from Montana to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BillingsBuenos Aires

BIL - EZE

BILEZE

Billings Logan Intl

Tue 5/12

5:05 am-8:00 am

2 stops23h 55m

Buenos Aires Ministro Pistarini

Tue 5/19

9:00 pm-5:16 pm

2 stops23h 16m

$1,596
Quickest round-trip

BillingsBuenos Aires

BIL - EZE

BILEZE

Billings Logan Intl

Sun 5/10

10:35 am-8:00 am

2 stops18h 25m

Buenos Aires Ministro Pistarini

Sun 5/17

9:00 pm-8:57 pm

2 stops26h 57m

$1,636

HelenaBuenos Aires

HLN - EZE

HLNEZE

Helena

Sat 5/9

6:15 am-8:00 am

2 stops22h 45m

Buenos Aires Ministro Pistarini

Sat 5/16

9:00 pm-9:46 pm

2 stops51h 46m

$1,659

HelenaBuenos Aires

HLN - EZE

HLNEZE

Helena

Sat 9/19

2:29 pm-8:00 am

2 stops38h 31m

Buenos Aires Ministro Pistarini

Wed 9/23

9:00 pm-4:05 pm

2 stops22h 05m

$1,672

HelenaBuenos Aires

HLN - EZE

HLNEZE

Helena

Sat 9/19

6:15 am-8:00 am

2 stops46h 45m

Buenos Aires Ministro Pistarini

Wed 9/23

9:00 pm-8:59 pm

2 stops26h 59m

$1,713

BillingsBuenos Aires

BIL - EZE

BILEZE

Billings Logan Intl

Tue 5/12

10:35 am-9:20 am

3 stops19h 45m

Buenos Aires Ministro Pistarini

Tue 5/19

1:10 pm-1:23 pm

2 stops27h 13m

$4,478

BillingsBuenos Aires

BIL - EZE

BILEZE

Billings Logan Intl

Thu 7/16

5:00 am-8:00 am

2 stops24h 00m

Buenos Aires Ministro Pistarini

Sat 7/25

9:00 pm-10:20 pm

2 stops28h 20m

$5,591

BozemanBuenos Aires

BZN - EZE

BZNEZE

Bozeman Gallatin Field

Sun 5/3

7:59 pm-9:20 am

2 stops34h 21m

Buenos Aires Ministro Pistarini

Wed 5/13

8:10 pm-1:09 pm

1 stop19h 59m

$5,687

BozemanBuenos Aires

BZN - EZE

BZNEZE

Bozeman Gallatin Field

Sun 5/3

2:53 pm-1:00 am

2 stops55h 07m

Buenos Aires Ministro Pistarini

Wed 5/13

7:35 am-1:09 pm

3 stops32h 34m

$5,762

BillingsBuenos Aires

BIL - EZE

BILEZE

Billings Logan Intl

Wed 4/8

6:25 am-9:20 am

2 stops23h 55m

Buenos Aires Ministro Pistarini

Fri 4/17

1:10 pm-10:24 pm

2 stops36h 14m

$6,281

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 Montana 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

Can stopping save me money on Montana to Buenos Aires flights?

You could potentially save up to 1% on your flight if you consider stops on a Montana to Buenos Aires flight.

Cheap Montana to Buenos Aires flight deals and tips

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

Fastest flight time

15h 52m

Direct flights

None
The fastest flight from Montana to Buenos Aires takes 15h 52m
There are no direct flights from Montana to Buenos Aires. There are no popular flight routes from Montana to Buenos Aires.
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  • When did momondo last update prices for flights from Montana to Buenos Aires?

    Prices for flights from Montana to Buenos Aires refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montana 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.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montana to Buenos Aires. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Montana to Buenos Aires with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Buenos Aires from Montana.

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

If you are simply researching potential flights to Buenos Aires, momondo offers a useful price alert feature which will track prices for flights to Buenos Aires from Montana and alert you when they change.

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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