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Cheap flights from New Hampshire to Porto Alegre from $670

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from New Hampshire to Porto Alegre departing on 3/17. 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
Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

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Find the cheapest flights from New Hampshire to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:16 am - 2:25 pm
BOS
-
POA
30h 09m
2 stops
United Airlines Logo
3:30 pm - 2:29 pm
POA
-
BOS
23h 59m
2 stops
$670United Airlines
ter, mar 17 - qui, mar 19
LATAM Airlines Logo
10:03 am - 6:30 am
BOS
-
POA
18h 27m
2 stops
LATAM Airlines Logo
5:00 am - 1:09 am
POA
-
BOS
21h 09m
2 stops
$754LATAM Airlines
dom, mar 1 - sáb, mar 14
United Airlines Logo
12:07 pm - 2:25 pm
BOS
-
POA
25h 18m
3 stops
United Airlines Logo
3:30 pm - 12:49 pm
POA
-
BOS
22h 19m
2 stops
$817United Airlines
ter, mar 17 - qui, mar 19
LATAM Airlines Logo
8:59 pm - 2:05 pm
BOS
-
POA
39h 06m
2 stops
LATAM Airlines Logo
6:40 am - 9:04 am
POA
-
BOS
28h 24m
2 stops
$945LATAM Airlines
dom, fev 22 - sáb, mar 7
Multiple Airlines Logo
6:53 pm - 5:00 pm
BOS
-
POA
44h 07m
2 stops
Multiple Airlines Logo
5:55 pm - 10:15 am
POA
-
BOS
18h 20m
2 stops
$973Multiple Airlines
sáb, fev 21 - seg, mar 2
LATAM Airlines Logo
1:04 pm - 5:00 pm
BOS
-
POA
25h 56m
2 stops
LATAM Airlines Logo
7:45 am - 1:09 am
POA
-
BOS
19h 24m
2 stops
$1,061LATAM Airlines
sáb, fev 21 - seg, mar 2
Multiple Airlines Logo
5:50 pm - 12:25 am
BOS
-
POA
52h 35m
2 stops
Multiple Airlines Logo
8:10 pm - 7:35 am
POA
-
BOS
36h 25m
1 stop
$1,098Multiple Airlines
dom, mar 1 - sáb, mar 14
United Airlines Logo
9:45 am - 11:45 am
BOS
-
POA
24h 00m
2 stops
United Airlines Logo
3:40 pm - 11:49 am
POA
-
BOS
22h 09m
2 stops
$1,117United Airlines
seg, fev 16 - sáb, mar 7
Delta Logo
8:55 am - 12:40 am
BOS
-
POA
13h 45m
1 stop
Delta Logo
8:10 pm - 11:48 am
POA
-
BOS
17h 38m
2 stops
$1,131Delta
seg, fev 16 - sáb, mar 7
United Airlines Logo
4:25 pm - 4:20 pm
BOS
-
POA
45h 55m
2 stops
United Airlines Logo
3:25 pm - 12:46 pm
POA
-
BOS
47h 21m
3 stops
$1,219United Airlines
sáb, fev 21 - seg, mar 2

LATAM Airlines flights from New Hampshire to Porto Alegre

Our best LATAM Airlines deals on New Hampshire to Porto Alegre flight tickets
LATAM Airlines
Mar 1
BOS10:03 amBoston Logan Intl
18h 27m
2 stops
POA6:30 amPorto Alegre Salgado Filho
Mar 14
POA5:00 amPorto Alegre Salgado Filho
21h 09m
2 stops
BOS1:09 amBoston Logan Intl
$754
LATAM Airlines
Feb 22
BOS8:59 pmBoston Logan Intl
39h 06m
2 stops
POA2:05 pmPorto Alegre Salgado Filho
Mar 7
POA6:40 amPorto Alegre Salgado Filho
28h 24m
2 stops
BOS9:04 amBoston Logan Intl
$945
LATAM Airlines
Feb 21
BOS1:04 pmBoston Logan Intl
25h 56m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Mar 2
POA7:45 amPorto Alegre Salgado Filho
19h 24m
2 stops
BOS1:09 amBoston Logan Intl
$1,061

Copa Airlines flights from New Hampshire to Porto Alegre

Our best Copa Airlines deals on New Hampshire to Porto Alegre flight tickets
Copa Airlines
Feb 22
BOS7:31 amBoston Logan Intl
14h 54m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 6
POA1:30 amPorto Alegre Salgado Filho
22h 40m
1 stop
BOS10:10 pmBoston Logan Intl
$1,533
Copa Airlines
Feb 14
BOS7:31 amBoston Logan Intl
14h 54m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 5
POA1:30 amPorto Alegre Salgado Filho
22h 40m
1 stop
BOS10:10 pmBoston Logan Intl
$1,771
Copa Airlines
Feb 16
BOS7:31 amBoston Logan Intl
14h 54m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 6
POA1:30 amPorto Alegre Salgado Filho
22h 40m
1 stop
BOS10:10 pmBoston Logan Intl
$1,845

momondo Fare Finder

 
Customize your flight search to find flights from New Hampshire to Porto Alegre 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 janeiro 28, 2026.
Use the filters below to find and compare flights from New Hampshire to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

ter 3/17

7:16 am-2:25 pm

2 stops30h 09m

Porto Alegre Salgado Filho

qui 3/19

3:30 pm-2:29 pm

2 stops23h 59m

$670

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

dom 3/1

10:03 am-6:30 am

2 stops18h 27m

Porto Alegre Salgado Filho

sáb 3/14

5:00 am-1:09 am

2 stops21h 09m

$754

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

ter 3/17

12:07 pm-2:25 pm

3 stops25h 18m

Porto Alegre Salgado Filho

qui 3/19

3:30 pm-12:49 pm

2 stops22h 19m

$817

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

dom 2/22

8:59 pm-2:05 pm

2 stops39h 06m

Porto Alegre Salgado Filho

sáb 3/7

6:40 am-9:04 am

2 stops28h 24m

$945

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

sáb 2/21

6:53 pm-5:00 pm

2 stops44h 07m

Porto Alegre Salgado Filho

seg 3/2

5:55 pm-10:15 am

2 stops18h 20m

$973

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

sáb 2/21

1:04 pm-5:00 pm

2 stops25h 56m

Porto Alegre Salgado Filho

seg 3/2

7:45 am-1:09 am

2 stops19h 24m

$1,061

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

dom 3/1

5:50 pm-12:25 am

2 stops52h 35m

Porto Alegre Salgado Filho

sáb 3/14

8:10 pm-7:35 am

1 stop36h 25m

$1,098

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

seg 2/16

9:45 am-11:45 am

2 stops24h 00m

Porto Alegre Salgado Filho

sáb 3/7

3:40 pm-11:49 am

2 stops22h 09m

$1,117

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

seg 2/16

8:55 am-12:40 am

1 stop13h 45m

Porto Alegre Salgado Filho

sáb 3/7

8:10 pm-11:48 am

2 stops17h 38m

$1,131

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

sáb 2/21

4:25 pm-4:20 pm

2 stops45h 55m

Porto Alegre Salgado Filho

seg 3/2

3:25 pm-12:46 pm

3 stops47h 21m

$1,219

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Porto Alegre from

How to get the cheapest flight ticket from New Hampshire to Porto Alegre

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 cheapest month to fly to Porto Alegre?

The cheapest month to fly to Porto Alegre from New Hampshire is in June. Flight prices, which tend to average around $486, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in June, then May is your next best option. Flight prices from New Hampshire to Porto Alegre during May average around $574.

Cheap New Hampshire to Porto Alegre flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from New Hampshire to Porto Alegre

Fastest flight time

17h 46m

Direct flights

None
The fastest flight from New Hampshire to Porto Alegre takes 17h 46m
There are no direct flights from New Hampshire to Porto Alegre. There are no popular flight routes from New Hampshire to Porto Alegre.
Search flight deals

  • When did momondo last update prices for flights from New Hampshire to Porto Alegre Salgado Filho Airport?

    Prices for flights from New Hampshire to Porto Alegre Salgado Filho Airport were last updated today.

  • How many operators does momondo search for flights from New Hampshire to Porto Alegre Salgado Filho Airport?

  • How old do you have to be to fly from New Hampshire to Porto Alegre Salgado Filho Airport?

    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 New Hampshire to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The travel and health documents required for your trip to Porto Alegre Salgado Filho Airport 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 Porto Alegre Salgado Filho Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from New Hampshire to Porto Alegre?

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

Can I find flights from New Hampshire to Porto Alegre with flexible booking policies on momondo?

All flight searches from New Hampshire to Porto Alegre on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from New Hampshire to Porto Alegre?

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 New Hampshire to Porto Alegre.

I’m not ready to book a flight from New Hampshire to Porto Alegre right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Porto Alegre, momondo offers a useful price alert feature which will track prices for flights to Porto Alegre from New Hampshire and alert you when they change.

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