$256+ Cheap flights from Boston (BOS) to Portugal
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
Jul 9 — Jul 161
Round-trip
1 adult, Economy
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Cheapest flights from Boston to PortugalExplore the most affordable flight options available from Boston to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.
Explore the most affordable flight options available from Boston to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 10/110:55 pm
BOS
- FAO
1 stop32h 05m
Multiple Airlines
Thu 10/151:35 pm
FAO
- BOS
1 stop12h 30m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$436
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 10/110:55 pm
BOS
- FAO
1 stop32h 05m
Multiple Airlines
Tue 10/136:45 pm
FAO
- BOS
1 stop31h 20m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$445
This Iberia deal was found by Cheapflights users on 6/8. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:35 pm
BOS
- FAO
1 stop29h 10m
Iberia
Thu 10/159:40 am
FAO
- BOS
1 stop16h 25m
Iberia
Deal found 6/8![Iberia logo]()
$486
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 10/710:55 pm
BOS
- FAO
1 stop14h 10m
Multiple Airlines
Thu 10/151:35 pm
FAO
- BOS
1 stop12h 30m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$507
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 10/710:55 pm
BOS
- FAO
1 stop14h 10m
Multiple Airlines
Wed 10/146:45 am
FAO
- BOS
2 stops19h 20m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$520
This Iberia deal was found by Cheapflights users on 6/8. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:35 pm
BOS
- FAO
1 stop29h 10m
Iberia
Sun 10/1112:05 pm
FAO
- BOS
1 stop14h 40m
Iberia
Deal found 6/8![Iberia logo]()
$591
This oojo deal was found by Cheapflights users on 6/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:00 pm
BOS
- TER
1 stop25h 15m
TAP AIR PORTUGAL
Sun 11/1511:50 am
TER
- BOS
1 stop12h 05m
TAP AIR PORTUGAL
Deal found 6/9![TAP AIR PORTUGAL logo]()
$617
This oojo deal was found by Cheapflights users on 6/5. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:00 pm
BOS
- TER
1 stop13h 00m
TAP AIR PORTUGAL
Mon 11/22:55 pm
TER
- BOS
1 stop33h 50m
TAP AIR PORTUGAL
Deal found 6/5![TAP AIR PORTUGAL logo]()
$623
This oojo deal was found by Cheapflights users on 6/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:45 pm
BOS
- TER
1 stop20h 30m
TAP AIR PORTUGAL
Tue 9/87:05 am
TER
- BOS
1 stop17h 15m
TAP AIR PORTUGAL
Deal found 6/8![TAP AIR PORTUGAL logo]()
$627
This oojo deal was found by Cheapflights users on 6/4. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:05 pm
BOS
- TER
1 stop25h 10m
TAP AIR PORTUGAL
Mon 10/191:40 pm
TER
- BOS
1 stop29h 05m
TAP AIR PORTUGAL
Deal found 6/4![TAP AIR PORTUGAL logo]()
$635
This oojo deal was found by Cheapflights users on 6/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:00 pm
BOS
- TER
1 stop13h 00m
TAP AIR PORTUGAL
Sat 11/1411:50 am
TER
- BOS
1 stop12h 05m
TAP AIR PORTUGAL
Deal found 6/7![TAP AIR PORTUGAL logo]()
$638
This oojo deal was found by Cheapflights users on 6/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 pm
BOS
- TER
1 stop13h 45m
TAP AIR PORTUGAL
Sun 11/811:50 am
TER
- BOS
1 stop12h 05m
TAP AIR PORTUGAL
Deal found 6/8![TAP AIR PORTUGAL logo]()
$647
Best flights from Boston to PortugalDiscover carefully curated flight deals from Boston to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
Discover carefully curated flight deals from Boston to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
This Gotogate deal was found by Cheapflights users on 6/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:25 pm
BOS
- SJZ
2 stops8h 40m
Multiple Airlines
Thu 11/2610:05 am
SJZ
- BOS
2 stops13h 55m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$681
This Delta deal was found by Cheapflights users on 6/7. 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.
Mon 7/2712:00 pm
BOS
- OPO
2 stops17h 40m
Delta
Tue 8/1811:30 am
OPO
- BOS
1 stop30h 48m
Delta
Deal found 6/7![Delta logo]()
$731
This United Airlines deal was found by Cheapflights users on 6/6. 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 7/258:27 pm
BOS
- OPO
1 stop32h 18m
United Airlines
Sat 9/1912:20 pm
OPO
- BOS
1 stop26h 30m
United Airlines
Deal found 6/6![United Airlines logo]()
$731
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/6. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:00 pm
BOS
- TER
1 stop13h 00m
TAP AIR PORTUGAL
Fri 11/136:40 am
TER
- BOS
1 stop12h 00m
TAP AIR PORTUGAL
Deal found 6/6![TAP AIR PORTUGAL logo]()
$772
This SWISS deal was found by Cheapflights users on 6/6. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:20 pm
BOS
- FAO
1 stop19h 55m
SWISS
Mon 9/219:10 am
FAO
- BOS
1 stop35h 00m
SWISS
Deal found 6/6![SWISS logo]()
$799
This Air Transat deal was found by Cheapflights users on 6/8. 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 Air Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:10 pm
BOS
- OPO
1 stop10h 35m
Air Transat
Sun 8/308:25 am
OPO
- BOS
1 stop17h 30m
Air Transat
Deal found 6/8![Air Transat logo]()
$811
This KLM deal was found by Cheapflights users on 6/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:40 pm
BOS
- FAO
2 stops17h 10m
KLM
Sun 11/86:50 pm
FAO
- BOS
1 stop23h 35m
KLM
Deal found 6/9![KLM logo]()
$819
This Virgin Atlantic deal was found by Cheapflights users on 6/5. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:20 pm
BOS
- LIS
Nonstop6h 25m
Virgin Atlantic
Mon 8/1712:45 pm
LIS
- BOS
Nonstop7h 30m
Virgin Atlantic
Deal found 6/5![Virgin Atlantic logo]()
$885
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Wed 8/196:00 am
BOS
- OPO
1 stop22h 45m
United Airlines
Sun 8/2312:15 pm
OPO
- BOS
1 stop26h 35m
United Airlines
Deal found 6/6![United Airlines logo]()
$731
This FlightHub deal was found by Cheapflights users on 6/8. 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.
Sat 9/59:15 pm
BOS
- GRW
2 stops33h 10m
Multiple Airlines
Tue 9/84:10 pm
GRW
- BOS
1 stop7h 40m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$775
This oojo deal was found by Cheapflights users on 6/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:05 pm
BOS
- FNC
1 stop12h 35m
TAP AIR PORTUGAL
Mon 9/147:35 pm
FNC
- BOS
1 stop24h 10m
TAP AIR PORTUGAL
Deal found 6/8![TAP AIR PORTUGAL logo]()
$813
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Mon 7/65:45 am
BOS
- OPO
1 stop20h 15m
United Airlines
Sat 9/512:10 pm
OPO
- BOS
1 stop10h 57m
United Airlines
Deal found 6/6![United Airlines logo]()
$748
This Delta deal was found by Cheapflights users on 6/8. 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.
Mon 8/3111:20 pm
BOS
- LIS
Nonstop6h 25m
Delta
Mon 9/2110:00 am
LIS
- BOS
1 stop15h 26m
Delta
Deal found 6/8![Delta logo]()
$871
This Gotogate deal was found by Cheapflights users on 6/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:15 pm
BOS
- SJZ
2 stops36h 30m
Multiple Airlines
Sun 9/2712:10 pm
SJZ
- BOS
2 stops35h 40m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$794
This KLM deal was found by Cheapflights users on 6/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/111:20 pm
BOS
- LIS
Nonstop6h 25m
KLM
Mon 8/1712:45 pm
LIS
- BOS
Nonstop7h 30m
KLM
Deal found 6/6![KLM logo]()
$885
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 8/123:35 pm
BOS
- OPO
1 stop10h 25m
United Airlines
Sun 8/2312:15 pm
OPO
- BOS
1 stop26h 35m
United Airlines
Deal found 6/8![United Airlines logo]()
$748
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/8. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:00 pm
BOS
- PDL
1 stop25h 45m
TAP AIR PORTUGAL
Fri 11/137:25 pm
PDL
- BOS
2 stops52h 26m
TAP AIR PORTUGAL
Deal found 6/8![TAP AIR PORTUGAL logo]()
$854
This Delta deal was found by Cheapflights users on 6/4. 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.
Mon 7/135:10 pm
BOS
- LIS
1 stop13h 05m
Delta
Fri 7/2412:45 pm
LIS
- BOS
Nonstop7h 25m
Delta
Deal found 6/4![Delta logo]()
$880
This Booking.com deal was found by Cheapflights users on 6/4. 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.
Sun 9/209:15 pm
BOS
- PIX
2 stops17h 20m
Multiple Airlines
Thu 9/244:55 pm
PIX
- BOS
2 stops21h 25m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$825
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/88:27 pm
BOS
- OPO
1 stop32h 18m
United Airlines
Sat 8/2911:20 am
OPO
- BOS
2 stops17h 39m
United Airlines
Deal found 6/8![United Airlines logo]()
$759
This Delta deal was found by Cheapflights users on 6/4. 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 7/1711:25 pm
BOS
- LIS
Nonstop6h 20m
Delta
Mon 8/312:45 pm
LIS
- BOS
Nonstop7h 30m
Delta
Deal found 6/4![Delta logo]()
$884
This Cheapflightsfares deal was found by Cheapflights users on 6/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/82:45 pm
BOS
- FNC
2 stops28h 25m
TAP AIR PORTUGAL
Wed 9/163:05 pm
FNC
- BOS
1 stop10h 15m
TAP AIR PORTUGAL
Deal found 6/5![TAP AIR PORTUGAL logo]()
$906
This Gotogate deal was found by Cheapflights users on 6/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/269:15 pm
BOS
- PIX
1 stop15h 15m
Multiple Airlines
Thu 10/111:40 am
PIX
- BOS
2 stops12h 10m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$832
This United Airlines deal was found by Cheapflights users on 6/7. 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.
Sun 7/56:50 pm
BOS
- OPO
1 stop31h 10m
United Airlines
Wed 8/1911:20 am
OPO
- BOS
1 stop11h 47m
United Airlines
Deal found 6/7![United Airlines logo]()
$788
This Delta deal was found by Cheapflights users on 6/6. 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 7/411:25 pm
BOS
- LIS
Nonstop6h 20m
Delta
Wed 7/1512:45 pm
LIS
- BOS
Nonstop7h 25m
Delta
Deal found 6/6![Delta logo]()
$886
This KLM deal was found by Cheapflights users on 6/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/228:25 pm
BOS
- FNC
1 stop32h 10m
KLM
Mon 7/610:00 am
FNC
- BOS
1 stop35h 40m
KLM
Deal found 6/7![KLM logo]()
$1,076
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/5. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/510:40 pm
BOS
- TER
1 stop32h 20m
TAP AIR PORTUGAL
Sun 7/125:55 pm
TER
- BOS
1 stop30h 25m
TAP AIR PORTUGAL
Deal found 6/5![TAP AIR PORTUGAL logo]()
$911
This Gotogate deal was found by Cheapflights users on 6/5. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:15 pm
BOS
- PIX
2 stops12h 35m
Multiple Airlines
Wed 9/167:55 pm
PIX
- BOS
1 stop27h 55m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$861
This Delta deal was found by Cheapflights users on 6/5. 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 7/2111:25 pm
BOS
- LIS
Nonstop6h 20m
Delta
Sun 7/269:55 am
LIS
- BOS
1 stop11h 13m
Delta
Deal found 6/5![Delta logo]()
$895
This KLM deal was found by Cheapflights users on 6/5. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:25 pm
BOS
- FNC
1 stop17h 15m
KLM
Fri 8/216:55 pm
FNC
- BOS
1 stop23h 23m
KLM
Deal found 6/5![KLM logo]()
$1,105
Last-minute flights from Boston to PortugalDiscover last-minute flight deals from Boston to Portugal. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Portugal. Data last updated June 9, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Sun 7/56:50 pm
BOS
- OPO
1 stop31h 10m
United Airlines
Wed 8/1911:20 am
OPO
- BOS
2 stops25h 57m
United Airlines
Deal found 6/6![United Airlines logo]()
$698
This CheapOair deal was found by Cheapflights users on 6/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:40 pm
BOS
- OPO
2 stops54h 20m
Multiple Airlines
Fri 9/48:40 am
OPO
- BOS
1 stop16h 15m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$689
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Mon 7/66:05 am
BOS
- OPO
2 stops19h 55m
United Airlines
Thu 8/2711:50 am
OPO
- BOS
1 stop14h 37m
United Airlines
Deal found 6/6![United Airlines logo]()
$692
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Mon 7/65:45 am
BOS
- OPO
1 stop20h 15m
United Airlines
Fri 9/49:00 am
OPO
- BOS
2 stops19h 59m
United Airlines
Deal found 6/8![United Airlines logo]()
$699
This CheapOair deal was found by Cheapflights users on 6/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:35 pm
BOS
- OPO
2 stops54h 25m
Air Canada
Fri 9/46:00 am
OPO
- BOS
2 stops20h 27m
Air Canada
Deal found 6/9![Air Canada logo]()
$704
This United Airlines deal was found by Cheapflights users on 6/6. 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 7/76:50 pm
BOS
- OPO
1 stop31h 10m
United Airlines
Fri 8/289:00 am
OPO
- BOS
1 stop32h 50m
United Airlines
Deal found 6/6![United Airlines logo]()
$694
This Air Canada deal was found by Cheapflights users on 6/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:40 pm
BOS
- OPO
2 stops30h 20m
Air Canada
Thu 8/273:00 am
OPO
- BOS
2 stops37h 52m
Air Canada
Deal found 6/6![Air Canada logo]()
$697
This Air Canada deal was found by Cheapflights users on 6/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:40 pm
BOS
- OPO
2 stops30h 10m
Air Canada
Fri 9/46:20 am
OPO
- BOS
2 stops20h 07m
Air Canada
Deal found 6/6![Air Canada logo]()
$696
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Wed 7/153:35 pm
BOS
- OPO
1 stop10h 25m
United Airlines
Wed 9/211:20 am
OPO
- BOS
1 stop11h 47m
United Airlines
Deal found 6/6![United Airlines logo]()
$688
This Delta deal was found by Cheapflights users on 6/7. 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 7/264:00 pm
BOS
- OPO
1 stop13h 25m
Delta
Tue 8/1811:30 am
OPO
- BOS
1 stop30h 48m
Delta
Deal found 6/7![Delta logo]()
$700
This United deal was found by Cheapflights users on 6/5. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/265:44 pm
BOS
- FAO
1 stop11h 11m
Multiple Airlines
Tue 8/117:05 pm
FAO
- BOS
1 stop25h 05m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$801
This Air Canada deal was found by Cheapflights users on 6/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2712:30 pm
BOS
- OPO
2 stops13h 30m
Air Canada
Wed 9/2311:20 am
OPO
- BOS
2 stops16h 20m
Air Canada
Deal found 6/9![Air Canada logo]()
$703
One-way flights from Boston to PortugalSearch for one-way flight options from Boston to Portugal. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
Search for one-way flight options from Boston to Portugal. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This oojo deal was found by Cheapflights users on 6/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:45 pm
BOS
- PDL
1 stop10h 30m
TAP AIR PORTUGAL
Deal found 6/8![TAP AIR PORTUGAL logo]()
$256
This Booking.com deal was found by Cheapflights users on 6/5. 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.
Sun 8/3010:40 pm
BOS
- PDL
1 stop21h 05m
TAP AIR PORTUGAL
Deal found 6/5![TAP AIR PORTUGAL logo]()
$257
This Booking.com deal was found by Cheapflights users on 6/7. 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.
Tue 8/186:05 pm
BOS
- PDL
1 stop25h 40m
TAP AIR PORTUGAL
Deal found 6/7![TAP AIR PORTUGAL logo]()
$258
This Mytrip deal was found by Cheapflights users on 6/8. 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.
Mon 8/2410:45 pm
BOS
- PDL
1 stop15h 50m
TAP AIR PORTUGAL
Deal found 6/8![TAP AIR PORTUGAL logo]()
$260
This Trip.com deal was found by Cheapflights users on 6/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:45 pm
BOS
- PDL
1 stop21h 00m
TAP AIR PORTUGAL
Deal found 6/6![TAP AIR PORTUGAL logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 6/5. 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.
Sun 8/2310:40 pm
BOS
- PDL
1 stop21h 05m
TAP AIR PORTUGAL
Deal found 6/5![TAP AIR PORTUGAL logo]()
$270
This Trip.com deal was found by Cheapflights users on 6/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:05 am
BOS
- PDL
1 stop18h 05m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 8/3110:05 am
BOS
- PDL
1 stop19h 00m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 7/2711:00 pm
BOS
- FAO
2 stops42h 30m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 6/5. 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.
Sat 9/58:50 pm
BOS
- FAO
3 stops41h 20m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$287
This FlightHub deal was found by Cheapflights users on 6/8. 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 8/2010:20 pm
BOS
- PDL
1 stop31h 25m
TAP AIR PORTUGAL
Deal found 6/8![TAP AIR PORTUGAL logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Sun 8/238:50 pm
BOS
- FAO
2 stops17h 20m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$297
Find flight deals from Boston to Portugal
Keep the following information in mind while searching for Boston to Portugal flight deals. Data was last updated June 9, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $436 (Kiwi.com) |
One-way from | $256 (oojo) |
Popular in | June |
Cheapest in | February |
Average price | $1,065 |
Good round-trip deal | $735 or less |
Good one-way deal | $319 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Portugal 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 2,558,603 searches. Data last updated June 9, 2026.
Use the filters below to find and compare flights from Boston to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonVelas
BOS - SJZ
BOSSJZ
Boston Logan Intl
Fri 11/20
9:25 pm-10:05 am
2 stops8h 40m
Velas Sao Jorge Island
Thu 11/26
10:05 am-8:00 pm
2 stops13h 55m
$681
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Mon 7/27
12:00 pm-10:40 am
2 stops17h 40m
Porto
Tue 8/18
11:30 am-1:18 pm
1 stop30h 48m
$731
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Sat 7/25
8:27 pm-9:45 am
1 stop32h 18m
Porto
Sat 9/19
12:20 pm-9:50 am
1 stop26h 30m
$731
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Wed 8/19
6:00 am-9:45 am
1 stop22h 45m
Porto
Sun 8/23
12:15 pm-9:50 am
1 stop26h 35m
$731
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Mon 7/6
5:45 am-7:00 am
1 stop20h 15m
Porto
Sat 9/5
12:10 pm-6:07 pm
1 stop10h 57m
$748
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Wed 8/12
3:35 pm-7:00 am
1 stop10h 25m
Porto
Sun 8/23
12:15 pm-9:50 am
1 stop26h 35m
$748
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Sat 8/8
8:27 pm-9:45 am
1 stop32h 18m
Porto
Sat 8/29
11:20 am-11:59 pm
2 stops17h 39m
$759
BostonLajes
BOS - TER
BOSTER
Boston Logan Intl
Mon 11/9
6:00 pm-11:00 am
1 stop13h 00m
Lajes
Fri 11/13
6:40 am-2:40 pm
1 stop12h 00m
$772
BostonSanta Cruz da Graciosa
BOS - GRW
BOSGRW
Boston Logan Intl
Sat 9/5
9:15 pm-10:25 am
2 stops33h 10m
Santa Cruz da Graciosa Graciosa Island
Tue 9/8
4:10 pm-7:50 pm
1 stop7h 40m
$775
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Sun 7/5
6:50 pm-7:00 am
1 stop31h 10m
Porto
Wed 8/19
11:20 am-6:07 pm
1 stop11h 47m
$788
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Boston to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Boston with our price prediction graph.
BOS-PDL
BOS-FAO
BOS-TER
BOS-OPO
BOS-LIS
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 Portugal
BOS-PT0
BOS-PDL
BOS-FAO
BOS-TER
BOS-OPO
What is the cheapest month to book a flight from Boston to Portugal?
Currently, November is the cheapest month in which you can book a flight from Boston to Portugal (average of $562). Flying from Boston to Portugal in June is currently the most expensive (average of $1,035). 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.
What is the cheapest time of day to fly from BOS to PT?
Find hourly flight availability from Boston to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 9, 2026.
When flying from Boston to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Boston to Portugal
Explore weekly flight availability from Boston to Portugal. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 9, 2026.
The most flights from BOS to PT0 are scheduled on a Monday (10 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (4 on average).
How often are flights from Boston to Portugal delayed?
About 23% of weekly flights between Boston and Portugal have experienced delays in the past year, with the average delay time being 132 minutes.
What is the most punctual flight time for Boston to Portugal flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to Portugal flights?
Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 16% of flights being delayed.
How far ahead should I book a flight from Boston to Portugal?
The best time to book flights from Boston to Portugal is 42 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Portugal
Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated June 9, 2026.
Peruse reviews from past customers who have flown with Delta,Air France, andUnited Airlines from Boston to Portugal to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Boston to Portugal. 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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Alternative routes for Boston to Portugal
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portugal by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Portugal by cabin class
Find flights from Boston to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Portugal flights
Browse other Boston and Portugal flight options. Last updated on June 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Boston to Portugal flights
Consider these flights traveling from Boston to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top 10 airlines flying from Boston to Portugal
Discover the top 10 airlines that operate flights from Boston to Portugal. 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 2,558,603 searches. Data last updated June 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$248 | Average$608 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$272 | Average$465 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$310 | Average$553 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$362 | Average$589 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$363 | Average$627 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$378 | Average$612 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$380 | Average$602 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$394 | Average$806 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$394 | Average$847 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$396 | Average$468 | FlexibilityNo cancel fee | On-time76% |