$295+ Cheap flights from Boston (BOS) to Buenos Aires (BUE)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BUE
Oct 23 — Oct 301
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Buenos Aires with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boston to Buenos Aires
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Cheapest flights from Boston to Buenos AiresExplore the most affordable flight options available from Boston to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
Explore the most affordable flight options available from Boston to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
This Booking.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:15 am -
1 stop15h 20m
Tue 12/85:35 am -
1 stop30h 10m
Deal found 9/22![Arajet logo]()
$783
This FlightHub deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:55 am -
1 stop19h 45m
Fri 10/309:00 am -
2 stops23h 35m
Deal found 9/18![Avianca logo]()
$792
This Avianca deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:55 am -
1 stop14h 35m
Mon 12/74:50 pm -
1 stop15h 45m
Deal found 9/18![Avianca logo]()
$793
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:15 pm -
1 stop14h 08m
Tue 11/105:50 am -
1 stop29h 55m
Deal found 9/19![Arajet logo]()
$796
This Copa Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:50 pm -
1 stop32h 02m
Tue 11/242:02 am -
1 stop21h 59m
Deal found 9/22![Copa Airlines logo]()
$797
This LATAM Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:05 am -
2 stops25h 35m
Sat 11/215:00 pm -
1 stop15h 45m
Deal found 9/18![LATAM Airlines logo]()
$799
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:15 pm -
1 stop14h 08m
Wed 11/1111:20 am -
2 stops36h 41m
Deal found 9/21![Multiple Airlines logo]()
$805
This American Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:43 pm -
2 stops17h 57m
Sat 11/2111:59 pm -
2 stops16h 35m
Deal found 9/21![American Airlines logo]()
$813
This Justfly.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:55 am -
1 stop19h 45m
Wed 12/97:05 am -
1 stop25h 30m
Deal found 9/22![Avianca logo]()
$816
This Justfly.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:55 am -
1 stop14h 35m
Wed 12/94:50 pm -
1 stop15h 45m
Deal found 9/22![Avianca logo]()
$816
This Booking.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/269:20 pm -
1 stop29h 15m
Tue 12/15:35 am -
1 stop30h 10m
Deal found 9/19![Arajet logo]()
$820
This Arajet deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:20 pm -
1 stop28h 03m
Tue 11/105:50 am -
1 stop29h 55m
Deal found 9/21![Arajet logo]()
$821
Best flights from Boston to Buenos AiresDiscover carefully curated flight deals from Boston to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
Discover carefully curated flight deals from Boston to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
This Copa Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:50 pm -
1 stop32h 02m
Tue 11/242:02 am -
1 stop21h 59m
Deal found 9/22![Copa Airlines logo]()
$797
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/163:15 pm -
1 stop38h 05m
Sun 1/3111:55 pm -
1 stop25h 18m
Deal found 9/20![United Airlines logo]()
$903
This Delta deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:55 pm -
2 stops22h 05m
Mon 12/75:35 pm -
2 stops19h 38m
Deal found 9/19![Delta logo]()
$957
This Arajet deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/19:20 pm -
1 stop28h 03m
Tue 12/15:35 am -
1 stop30h 10m
Deal found 9/18![Arajet logo]()
$1,093
This Copa Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/47:30 am -
1 stop17h 40m
Tue 2/164:25 am -
1 stop19h 34m
Deal found 9/18![Copa Airlines logo]()
$1,026
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/269:05 am -
1 stop24h 55m
Wed 3/38:05 pm -
2 stops19h 16m
Deal found 9/20![Delta logo]()
$1,033
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/49:45 am -
2 stops19h 35m
Wed 2/1711:55 pm -
2 stops20h 18m
Deal found 9/18![United Airlines logo]()
$1,092
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/236:00 pm -
2 stops20h 00m
Wed 3/38:05 pm -
2 stops20h 36m
Deal found 9/20![Delta logo]()
$1,038
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:00 am -
3 stops23h 20m
Thu 12/2410:05 pm -
2 stops19h 45m
Deal found 9/18![United Airlines logo]()
$1,108
This Copa Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/87:34 am -
1 stop17h 36m
Sun 1/172:45 pm -
1 stop24h 37m
Deal found 9/23![Copa Airlines logo]()
$1,161
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/191:00 pm -
2 stops18h 50m
Mon 11/3011:35 pm -
1 stop27h 40m
Deal found 9/21![Delta logo]()
$1,103
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/237:40 am -
1 stop21h 40m
Wed 3/311:55 pm -
1 stop25h 25m
Deal found 9/20![United Airlines logo]()
$1,166
This Delta deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/243:33 pm -
2 stops23h 27m
Sat 11/145:00 pm -
1 stop15h 45m
Deal found 9/19![Delta logo]()
$1,197
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/109:55 am -
2 stops19h 45m
Tue 3/912:55 pm -
1 stop19h 50m
Deal found 9/21![Delta logo]()
$1,198
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/149:55 am -
2 stops19h 45m
Thu 3/116:20 pm -
1 stop14h 25m
Deal found 9/21![Delta logo]()
$1,198
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/149:55 am -
2 stops19h 45m
Tue 3/96:20 pm -
1 stop14h 25m
Deal found 9/21![Delta logo]()
$1,198
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/149:55 am -
2 stops19h 45m
Fri 3/1212:55 pm -
1 stop19h 50m
Deal found 9/21![Delta logo]()
$1,198
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:40 pm -
2 stops21h 20m
Tue 11/108:05 pm -
2 stops17h 05m
Deal found 9/21![Delta logo]()
$1,207
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:33 pm -
2 stops23h 27m
Fri 10/306:20 pm -
1 stop14h 25m
Deal found 9/18![Delta logo]()
$1,242
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:00 am -
1 stop22h 25m
Tue 10/2012:55 pm -
1 stop19h 40m
Deal found 9/22![Delta logo]()
$1,250
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:00 am -
1 stop23h 30m
Tue 10/206:20 pm -
1 stop14h 15m
Deal found 9/22![Delta logo]()
$1,299
Last-minute flights from Boston to Buenos AiresDiscover last-minute flight deals from Boston to Buenos Aires. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Buenos Aires. Data last updated September 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:15 pm -
1 stop14h 08m
Fri 10/168:59 am -
2 stops51h 45m
Deal found 9/22![Multiple Airlines logo]()
$900
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:15 pm -
1 stop14h 08m
Thu 10/157:45 am -
2 stops26h 20m
Deal found 9/22![Multiple Airlines logo]()
$907
This Mytrip deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:15 pm -
1 stop14h 08m
Tue 10/138:59 am -
3 stops27h 53m
Deal found 9/23![Multiple Airlines logo]()
$916
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/203:33 pm -
2 stops28h 47m
Thu 11/1210:35 am -
1 stop22h 10m
Deal found 9/21![Multiple Airlines logo]()
$897
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:57 pm -
2 stops30h 23m
Thu 11/1210:35 am -
1 stop22h 10m
Deal found 9/19![Multiple Airlines logo]()
$940
This Arajet deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:20 pm -
1 stop28h 03m
Tue 11/105:50 am -
1 stop29h 55m
Deal found 9/21![Arajet logo]()
$821
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:47 am -
2 stops35h 33m
Thu 11/1210:35 am -
1 stop22h 10m
Deal found 9/21![Multiple Airlines logo]()
$904
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:15 pm -
1 stop14h 08m
Tue 11/105:50 am -
1 stop29h 55m
Deal found 9/19![Arajet logo]()
$796
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:15 pm -
1 stop14h 08m
Wed 11/1111:20 am -
2 stops36h 41m
Deal found 9/21![Multiple Airlines logo]()
$805
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:15 pm -
1 stop14h 08m
Mon 11/162:40 pm -
2 stops22h 50m
Deal found 9/19![Multiple Airlines logo]()
$885
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:15 pm -
1 stop14h 08m
Thu 11/125:00 pm -
1 stop15h 45m
Deal found 9/19![Multiple Airlines logo]()
$911
This FlightHub deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:55 am -
1 stop19h 45m
Fri 10/309:00 am -
2 stops23h 35m
Deal found 9/18![Avianca logo]()
$792
One-way flights from Boston to Buenos AiresSearch for one-way flight options from Boston to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from Boston to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This eDestinos deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1111:15 am -
1 stop15h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Arajet logo]()
$295
This Expedia deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:15 am -
1 stop15h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Arajet logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:15 am -
1 stop15h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Arajet logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/201:10 pm -
2 stops27h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/111:15 am -
1 stop15h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Arajet logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:50 pm -
2 stops18h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:05 am -
2 stops45h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:15 am -
3 stops24h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/133:50 pm -
2 stops17h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:05 am -
2 stops26h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:55 pm -
2 stops52h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/11:10 pm -
2 stops39h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$335
Find flight deals from Boston to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 23, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $783 (Booking.com) |
One-way from | $295 (eDestinos) |
Popular in | July |
Cheapest in | September |
Average price | $839 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston 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, Cheapflights users made 7,457,451 searches. Data last updated September 23, 2026.
Use the filters below to find and compare flights from Boston to Buenos Aires that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonBuenos Aires
BOS Boston Logan Intl - EZE Buenos Aires Ministro Pistarini
BOSEZE
Boston Logan Intl
Fri 3/12
11:15 am-4:35 am
1 stop15h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$353
BostonBuenos Aires
BOS Boston Logan Intl - AEP Buenos Aires Jorge Newbery
BOSAEP
Boston Logan Intl
Thu 12/31
3:20 pm-11:55 pm
2 stops30h 35m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$368
BostonBuenos Aires
BOS Boston Logan Intl - EZE Buenos Aires Ministro Pistarini
BOSEZE
Boston Logan Intl
Thu 10/22
8:47 am-3:41 pm
3 stops29h 54m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$478
BostonBuenos Aires
BOS Boston Logan Intl - EZE Buenos Aires Ministro Pistarini
BOSEZE
Boston Logan Intl
Thu 12/10
9:20 pm-4:35 am
1 stop29h 15m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$486
BostonBuenos Aires
BOS Boston Logan Intl - AEP Buenos Aires Jorge Newbery
BOSAEP
Boston Logan Intl
Thu 2/25
1:10 pm-12:20 pm
2 stops21h 10m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$486
BostonBuenos Aires
BOS Boston Logan Intl - EZE Buenos Aires Ministro Pistarini
BOSEZE
Boston Logan Intl
Thu 2/25
9:20 pm-4:35 am
1 stop29h 15m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$493
BostonBuenos Aires
BOS Boston Logan Intl - AEP Buenos Aires Jorge Newbery
BOSAEP
Boston Logan Intl
Sun 2/21
9:55 am-7:30 am
2 stops19h 35m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$518
BostonBuenos Aires
BOS Boston Logan Intl - EZE Buenos Aires Ministro Pistarini
BOSEZE
Boston Logan Intl
Mon 2/1
9:30 am-9:50 pm
1 stop34h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$523
BostonBuenos Aires
BOS Boston Logan Intl - AEP Buenos Aires Jorge Newbery
BOSAEP
Boston Logan Intl
Fri 12/4
9:05 am-12:00 pm
1 stop24h 55m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$531
BostonBuenos Aires
BOS Boston Logan Intl - AEP Buenos Aires Jorge Newbery
BOSAEP
Boston Logan Intl
Sun 2/28
9:05 am-2:00 pm
1 stop26h 55m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$531
Showing 1-10 of 44 resultsSorted by cheapest first
Compare providers for flights from Boston to Buenos Aires
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Buenos Aires in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boston-Buenos Aires flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Boston-Buenos Aires flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Boston-Buenos Aires flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Buenos Aires flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Boston with our price prediction graph.
BOS-BUE
BOS-AEP
BOS-EZE
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Buenos Aires
BOS-BUE
BOS-AEP
BOS-EZE
What is the cheapest month to book a flight from Boston to Buenos Aires?
Currently, September is the cheapest month in which you can book a flight from Boston to Buenos Aires (average of $957). Flying from Boston to Buenos Aires in July is currently the most expensive (average of $1,427). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Boston to Buenos Aires?
Airfare is typical for this route at the moment.
Boston to Buenos Aires flights typically cost between $771 and $1,109 in December.The cheapest round-trip price found within the last 5 days was $783 on Arajet (Dec 4-Dec 8).
How far ahead should I book a flight from Boston to Buenos Aires?
Booking 85 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Buenos Aires. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Buenos Aires
Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated September 23, 2026.
See what other customers who have flown with Delta,Copa Airlines, andLATAM Airlines from Boston to Buenos Aires have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Related info for your journey
Find useful and relevant information for your journey from Boston to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Buenos Aires
Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.
Complete your trip
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Search flights from Boston to Buenos Aires by cabin class
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Boston and Buenos Aires flights
Browse other Boston and Buenos Aires flight options. Last updated on September 23, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Boston to Buenos Aires
Discover the top 5 airlines that operate flights from Boston to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$486 | Average$1,074 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$531 | Average$1,141 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$708 | Average$1,205 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$811 | Average$1,325 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$891 | Average$1,291 | FlexibilityNo cancel fee | On-time71% |