Cheap flights from Boston to Southeast Region

View AU$380 flight on Mon, 1 Sep. 2025Opens in a new window

Popular airlines from Boston to Southeast Region

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Boston (BOS) to Southeast Region (RIO)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

avianca
Mon, 1 Sep. - Mon, 8 Sep.
BOS
Boston
GRU
Sao Paulo
AU$769 Return, found 6 days ago
AU$769
Return
found 6 days ago
Select avianca flight, departing Mon, 1 Sep. from Boston to Sao Paulo, returning Mon, 8 Sep., priced at AU$769 found 6 days ago
avianca
Mon, 1 Sep. - Mon, 8 Sep.
BOS
Boston
GRU
Sao Paulo
AU$796 Return, found 6 days ago
AU$796
Return
found 6 days ago
Select avianca flight, departing Mon, 1 Sep. from Boston to Sao Paulo, returning Mon, 8 Sep., priced at AU$796 found 6 days ago
Azul
Mon, 1 Sep. - Mon, 8 Sep.
BOS
Boston
VCP
Campinas
AU$1,842 Return, found 6 days ago
AU$1,842
Return
found 6 days ago
Select Azul flight, departing Mon, 1 Sep. from Boston to Campinas, returning Mon, 8 Sep., priced at AU$1,842 found 6 days ago
LATAM Airlines Group
Mon, 28 Jul. - Thu, 31 Jul.
BOS
Boston
GIG
Rio de Janeiro
AU$1,855 Return, found 2 days ago
AU$1,855
Return
found 2 days ago
Select LATAM Airlines Group flight, departing Mon, 28 Jul. from Boston to Rio de Janeiro, returning Thu, 31 Jul., priced at AU$1,855 found 2 days ago
American Airlines
Mon, 28 Jul. - Thu, 31 Jul.
BOS
Boston
GIG
Rio de Janeiro
AU$1,974 Return, found 2 days ago
AU$1,974
Return
found 2 days ago
Select American Airlines flight, departing Mon, 28 Jul. from Boston to Rio de Janeiro, returning Thu, 31 Jul., priced at AU$1,974 found 2 days ago
GOL Linhas Aereas S.A.
Mon, 28 Jul. - Thu, 31 Jul.
BOS
Boston
GIG
Rio de Janeiro
AU$2,077 Return, found 2 days ago
AU$2,077
Return
found 2 days ago
Select GOL Linhas Aereas S.A. flight, departing Mon, 28 Jul. from Boston to Rio de Janeiro, returning Thu, 31 Jul., priced at AU$2,077 found 2 days ago

Find the cheapest month to fly from Boston (BOS) to São Paulo (GRU)

September is typically the cheapest month to fly

From AU$603 - AU$891 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.