$301+ Cheap flights from Maine 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
May 31 — Jun 71
Round-trip
1 adult, Economy
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Cheapest flights from Maine to PortugalExplore the most affordable flight options available from Maine to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
Explore the most affordable flight options available from Maine to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
This FlightHub deal was found by Cheapflights users on 4/26. 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.
Wed 10/1410:40 am
BOS
- OPO
1 stop15h 20m
Air Canada
Wed 10/2112:45 pm
OPO
- BOS
2 stops24h 59m
Air Canada
Deal found 4/26![Air Canada logo]()
$618
This Justfly.com deal was found by Cheapflights users on 4/26. 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.
Wed 7/223:35 pm
BOS
- OPO
1 stop10h 25m
Multiple Airlines
Wed 11/1112:05 pm
OPO
- BOS
1 stop13h 15m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$619
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 9/2311:00 pm
BOS
- FAO
1 stop14h 05m
Multiple Airlines
Thu 10/11:35 pm
FAO
- BOS
1 stop12h 40m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$619
This LEVEL deal was found by Cheapflights users on 4/27. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:00 pm
BOS
- OPO
1 stop12h 10m
LEVEL
Sat 9/2610:00 pm
OPO
- BOS
1 stop29h 05m
LEVEL
Deal found 4/27![LEVEL logo]()
$621
This Rumbo deal was found by Cheapflights users on 4/28. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/49:15 pm
BOS
- PIX
1 stop9h 40m
Multiple Airlines
Mon 5/115:50 pm
PIX
- BOS
1 stop30h 00m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$623
This Iberia deal was found by Cheapflights users on 4/29. 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 9/2711:50 pm
BOS
- FAO
1 stop28h 55m
Iberia
Thu 10/19:40 am
FAO
- BOS
1 stop16h 35m
Iberia
Deal found 4/29![Iberia logo]()
$623
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 5/46:50 pm
BOS
- FAO
2 stops17h 45m
Multiple Airlines
Tue 5/196:45 pm
FAO
- BOS
1 stop31h 20m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$624
This LEVEL deal was found by Cheapflights users on 4/27. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/810:55 pm
BOS
- OPO
1 stop17h 25m
LEVEL
Wed 9/910:00 pm
OPO
- BOS
1 stop28h 15m
LEVEL
Deal found 4/27![LEVEL logo]()
$625
This Gotogate deal was found by Cheapflights users on 4/26. 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.
Mon 9/215:50 am
BOS
- OPO
1 stop20h 10m
Multiple Airlines
Wed 10/146:45 pm
OPO
- BOS
1 stop25h 25m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$626
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 9/278:50 pm
BOS
- OPO
2 stops17h 45m
Multiple Airlines
Wed 10/72:05 pm
OPO
- BOS
1 stop12h 10m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$629
This Expedia deal was found by Cheapflights users on 4/26. 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.
Mon 4/2711:17 am
BOS
- OPO
2 stops20h 23m
Austrian Airlines
Mon 5/410:10 am
OPO
- BOS
2 stops37h 10m
Austrian Airlines
Deal found 4/26![Austrian Airlines logo]()
$630
This United Airlines deal was found by Cheapflights users on 4/27. 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 7/68:26 pm
BOS
- OPO
1 stop28h 49m
United Airlines
Thu 9/1011:50 am
OPO
- BOS
1 stop27h 00m
United Airlines
Deal found 4/27![United Airlines logo]()
$631
Best flights from Maine to PortugalDiscover carefully curated flight deals from Maine to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
Discover carefully curated flight deals from Maine to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 10/233:35 pm
BOS
- OPO
1 stop10h 35m
United Airlines
Tue 11/312:35 pm
OPO
- BOS
1 stop12h 47m
United Airlines
Deal found 4/30![United Airlines logo]()
$645
This KLM deal was found by Cheapflights users on 4/28. 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.
Wed 5/134:35 pm
BOS
- FAO
1 stop33h 35m
KLM
Wed 5/208:20 pm
FAO
- BOS
1 stop25h 05m
KLM
Deal found 4/28![KLM logo]()
$737
This Gotogate deal was found by Cheapflights users on 4/28. 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 9/1811:45 am
BOS
- SJZ
1 stop16h 45m
Multiple Airlines
Fri 9/2510:55 am
SJZ
- BOS
1 stop12h 55m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$769
This Air Transat deal was found by Cheapflights users on 4/30. 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.
Sun 6/710:05 am
BOS
- OPO
1 stop20h 40m
Air Transat
Thu 6/251:30 pm
OPO
- BOS
1 stop33h 05m
Air Transat
Deal found 4/30![Air Transat logo]()
$826
This Virgin Atlantic deal was found by Cheapflights users on 4/29. 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 10/209:55 am
BOS
- LIS
1 stop17h 05m
Virgin Atlantic
Wed 10/2811:15 am
LIS
- BOS
Nonstop7h 44m
Virgin Atlantic
Deal found 4/29![Virgin Atlantic logo]()
$836
This LEVEL deal was found by Cheapflights users on 4/26. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/611:35 pm
BOS
- LIS
1 stop13h 50m
LEVEL
Sun 8/99:10 am
LIS
- BOS
1 stop17h 35m
LEVEL
Deal found 4/26![LEVEL logo]()
$859
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/30. 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 9/110:45 pm
BOS
- TER
1 stop20h 30m
TAP AIR PORTUGAL
Thu 9/107:15 am
TER
- BOS
1 stop17h 05m
TAP AIR PORTUGAL
Deal found 4/30![TAP AIR PORTUGAL logo]()
$914
This Delta deal was found by Cheapflights users on 5/1. 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 7/181:35 pm
BOS
- LIS
1 stop13h 25m
Delta
Sat 7/2512:45 pm
LIS
- BOS
Nonstop7h 25m
Delta
Deal found 5/1![Delta logo]()
$1,001
This American Airlines deal was found by Cheapflights users on 4/26. 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.
Sun 8/96:46 pm
PWM
- LIS
1 stop9h 19m
American Airlines
Sun 8/1611:05 am
LIS
- PWM
1 stop14h 12m
American Airlines
Deal found 4/26![American Airlines logo]()
$1,055
This United Airlines deal was found by Cheapflights users on 4/27. 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 8/127:35 am
BOS
- OPO
1 stop21h 10m
United Airlines
Sun 8/2312:15 pm
OPO
- BOS
1 stop26h 35m
United Airlines
Deal found 4/27![United Airlines logo]()
$691
This KLM deal was found by Cheapflights users on 4/26. 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.
Wed 5/134:35 pm
BOS
- FAO
1 stop33h 35m
KLM
Mon 5/189:45 pm
FAO
- BOS
1 stop23h 40m
KLM
Deal found 4/26![KLM logo]()
$737
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Fri 7/315:45 am
BOS
- OPO
1 stop20h 15m
United Airlines
Thu 8/2011:50 am
OPO
- BOS
2 stops27h 03m
United Airlines
Deal found 5/1![United Airlines logo]()
$695
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/119:15 pm
BOS
- TER
Nonstop5h 05m
Multiple Airlines
Mon 5/186:15 pm
TER
- BOS
3 stops54h 50m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$809
This United Airlines deal was found by Cheapflights users on 4/29. 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 8/1910:40 am
BOS
- OPO
1 stop15h 20m
United Airlines
Sun 8/2312:15 pm
OPO
- BOS
1 stop14h 12m
United Airlines
Deal found 4/29![United Airlines logo]()
$708
This KLM deal was found by Cheapflights users on 4/29. 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.
Sun 9/277:00 pm
BOS
- FAO
1 stop33h 10m
KLM
Sat 10/39:55 pm
FAO
- BOS
1 stop20h 20m
KLM
Deal found 4/29![KLM logo]()
$796
This Air Transat deal was found by Cheapflights users on 4/30. 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.
Sat 9/1910:05 am
BOS
- LIS
1 stop18h 30m
Air Transat
Sat 9/268:15 am
LIS
- BOS
1 stop17h 40m
Air Transat
Deal found 4/30![Air Transat logo]()
$889
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/28. 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.
Sat 9/1211:15 pm
BOS
- TER
1 stop13h 50m
TAP AIR PORTUGAL
Fri 9/187:10 am
TER
- BOS
1 stop11h 35m
TAP AIR PORTUGAL
Deal found 4/28![TAP AIR PORTUGAL logo]()
$931
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Mon 8/249:15 pm
BOS
- SMA
2 stops16h 15m
Multiple Airlines
Wed 9/28:55 pm
SMA
- BOS
1 stop26h 55m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$855
This KLM deal was found by Cheapflights users on 4/30. 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.
Sun 9/277:00 pm
BOS
- FAO
1 stop33h 10m
KLM
Sun 10/49:20 am
FAO
- BOS
2 stops18h 16m
KLM
Deal found 4/30![KLM logo]()
$807
This Air Transat deal was found by Cheapflights users on 4/26. 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.
Thu 6/1110:05 am
BOS
- LIS
1 stop18h 30m
Air Transat
Thu 6/188:15 am
LIS
- BOS
1 stop17h 40m
Air Transat
Deal found 4/26![Air Transat logo]()
$912
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/167:25 pm
BOS
- OPO
2 stops30h 30m
United Airlines
Wed 11/412:35 pm
OPO
- BOS
2 stops25h 49m
United Airlines
Deal found 4/30![United Airlines logo]()
$765
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/28. 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.
Wed 9/210:45 pm
BOS
- TER
1 stop20h 30m
TAP AIR PORTUGAL
Tue 9/87:05 am
TER
- BOS
1 stop17h 15m
TAP AIR PORTUGAL
Deal found 4/28![TAP AIR PORTUGAL logo]()
$944
This FlightHub deal was found by Cheapflights users on 4/27. 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 10/2410:25 pm
BOS
- TER
1 stop7h 35m
Multiple Airlines
Sat 10/311:25 pm
TER
- BOS
2 stops22h 27m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$863
This Delta deal was found by Cheapflights users on 4/28. 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 7/1311:25 pm
BOS
- LIS
Nonstop6h 20m
Delta
Sun 7/2612:45 pm
LIS
- BOS
Nonstop7h 25m
Delta
Deal found 4/28![Delta logo]()
$1,052
This KLM deal was found by Cheapflights users on 4/28. 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.
Sun 8/237:05 pm
BOS
- FAO
1 stop33h 05m
KLM
Mon 8/319:45 pm
FAO
- BOS
1 stop20h 34m
KLM
Deal found 4/28![KLM logo]()
$807
This United Airlines deal was found by Cheapflights users on 4/28. 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 9/139:34 am
BOS
- FAO
1 stop19h 21m
United Airlines
Tue 9/2211:40 am
FAO
- BOS
2 stops27h 37m
United Airlines
Deal found 4/28![United Airlines logo]()
$774
This Gotogate deal was found by Cheapflights users on 4/28. 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 9/109:15 pm
BOS
- PIX
2 stops12h 35m
Multiple Airlines
Wed 9/162:15 pm
PIX
- BOS
1 stop9h 35m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$872
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/30. 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 10/1811:00 pm
BOS
- FNC
1 stop10h 15m
TAP AIR PORTUGAL
Thu 10/229:25 am
FNC
- BOS
1 stop15h 55m
TAP AIR PORTUGAL
Deal found 4/30![TAP AIR PORTUGAL logo]()
$994
This KLM deal was found by Cheapflights users on 4/29. 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 10/98:25 pm
BOS
- FAO
1 stop31h 05m
KLM
Sun 10/186:55 pm
FAO
- BOS
1 stop23h 20m
KLM
Deal found 4/29![KLM logo]()
$856
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/132:22 pm
BOS
- FAO
2 stops15h 58m
United Airlines
Mon 5/1811:40 am
FAO
- BOS
2 stops16h 55m
United Airlines
Deal found 4/30![United Airlines logo]()
$792
Last-minute flights from Maine to PortugalDiscover last-minute flight deals from Maine to Portugal. Data last updated May 1, 2026 and is based on user searches.
Discover last-minute flight deals from Maine to Portugal. Data last updated May 1, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 4/29. 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 4/3010:40 am
BOS
- OPO
2 stops19h 45m
Multiple Airlines
Thu 5/711:05 am
OPO
- BOS
2 stops15h 22m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$645
This CrystalTravel deal was found by Cheapflights users on 4/30. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:05 pm
BOS
- OPO
1 stop22h 20m
Lufthansa
Tue 5/56:00 am
OPO
- BOS
1 stop14h 40m
Lufthansa
Deal found 4/30![Lufthansa logo]()
$646
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/29:40 pm
BOS
- OPO
1 stop15h 50m
SWISS
Mon 5/117:20 pm
OPO
- BOS
1 stop24h 50m
SWISS
Deal found 4/27![SWISS logo]()
$633
This Air Canada deal was found by Cheapflights users on 4/27. 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 5/26:50 pm
BOS
- OPO
2 stops36h 10m
Air Canada
Wed 5/136:20 am
OPO
- BOS
2 stops32h 25m
Air Canada
Deal found 4/27![Air Canada logo]()
$647
This United Airlines deal was found by Cheapflights users on 4/28. 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 5/35:45 am
BOS
- OPO
2 stops23h 00m
United Airlines
Wed 5/206:00 am
OPO
- BOS
1 stop14h 40m
United Airlines
Deal found 4/28![United Airlines logo]()
$637
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Sun 5/38:05 pm
BOS
- OPO
1 stop22h 20m
Multiple Airlines
Tue 5/1212:15 pm
OPO
- BOS
1 stop12h 40m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$638
This Rumbo deal was found by Cheapflights users on 4/28. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/49:15 pm
BOS
- PIX
1 stop9h 40m
Multiple Airlines
Mon 5/115:50 pm
PIX
- BOS
1 stop30h 00m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$623
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 5/46:50 pm
BOS
- FAO
2 stops17h 45m
Multiple Airlines
Tue 5/196:45 pm
FAO
- BOS
1 stop31h 20m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$624
This SWISS deal was found by Cheapflights users on 4/27. 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.
Mon 5/49:40 pm
BOS
- OPO
1 stop32h 45m
SWISS
Mon 5/1112:50 pm
OPO
- BOS
1 stop31h 20m
SWISS
Deal found 4/27![SWISS logo]()
$636
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Wed 5/610:40 am
BOS
- OPO
2 stops19h 45m
Multiple Airlines
Mon 5/117:20 pm
OPO
- BOS
1 stop29h 35m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$639
This KAYAK deal was found by Cheapflights users on 4/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/68:05 pm
BOS
- OPO
1 stop22h 20m
Lufthansa
Thu 5/216:20 am
OPO
- BOS
1 stop16h 20m
Lufthansa
Deal found 4/28![Lufthansa logo]()
$644
This CrystalTravel deal was found by Cheapflights users on 4/27. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:05 pm
BOS
- OPO
1 stop22h 20m
Multiple Airlines
Thu 5/2112:15 pm
OPO
- BOS
1 stop12h 40m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$648
One-way flights from Maine to PortugalSearch for one-way flight options from Maine to Portugal. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
Search for one-way flight options from Maine to Portugal. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
This Mytrip deal was found by Cheapflights users on 4/26. 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 9/1811:45 am
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Deal found 4/26![Azores Airlines logo]()
$301
This Mytrip deal was found by Cheapflights users on 4/26. 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.
Sun 9/611:45 am
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Deal found 4/26![Azores Airlines logo]()
$302
This Mytrip deal was found by Cheapflights users on 4/26. 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 8/319:15 pm
BOS
- TER
Nonstop5h 05m
Azores Airlines
Deal found 4/26![Azores Airlines logo]()
$302
This Mytrip deal was found by Cheapflights users on 4/28. 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 9/2511:45 am
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Deal found 4/28![Azores Airlines logo]()
$303
This Mytrip deal was found by Cheapflights users on 4/28. 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 9/1111:45 am
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Deal found 4/28![Azores Airlines logo]()
$304
This Booking.com deal was found by Cheapflights users on 4/26. 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.
Mon 10/196:05 pm
BOS
- PDL
1 stop11h 40m
TAP AIR PORTUGAL
Deal found 4/26![TAP AIR PORTUGAL logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 7/511:00 pm
BOS
- FAO
2 stops41h 15m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$305
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Sun 9/209:15 pm
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Deal found 4/29![Azores Airlines logo]()
$306
This oojo deal was found by Cheapflights users on 4/30. 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 10/146:05 pm
BOS
- PDL
1 stop11h 40m
TAP AIR PORTUGAL
Deal found 4/30![TAP AIR PORTUGAL logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/88:25 pm
BOS
- OPO
3 stops43h 00m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 9/208:50 pm
BOS
- OPO
2 stops17h 45m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/188:50 pm
BOS
- OPO
2 stops18h 15m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$309
Find flight deals from Maine to Portugal
Keep the following information in mind while searching for Maine to Portugal flight deals. Data was last updated May 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $618 (FlightHub) |
One-way from | $301 (Mytrip) |
Popular in | December |
Cheapest in | February |
Cheapflights Fare Finder
Customize your flight search to find flights from Maine 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 May 1, 2026.
Use the filters below to find and compare flights from Maine to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Fri 10/23
3:35 pm-7:10 am
1 stop10h 35m
Porto
Tue 11/3
12:35 pm-8:22 pm
1 stop12h 47m
$645
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Wed 8/12
7:35 am-9:45 am
1 stop21h 10m
Porto
Sun 8/23
12:15 pm-9:50 am
1 stop26h 35m
$691
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Fri 7/31
5:45 am-7:00 am
1 stop20h 15m
Porto
Thu 8/20
11:50 am-9:53 am
2 stops27h 03m
$695
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Wed 8/19
10:40 am-7:00 am
1 stop15h 20m
Porto
Sun 8/23
12:15 pm-9:27 pm
1 stop14h 12m
$708
BostonFaro
BOS - FAO
BOSFAO
Boston Logan Intl
Wed 5/13
4:35 pm-7:10 am
1 stop33h 35m
Faro
Wed 5/20
8:20 pm-4:25 pm
1 stop25h 05m
$737
BostonFaro
BOS - FAO
BOSFAO
Boston Logan Intl
Wed 5/13
4:35 pm-7:10 am
1 stop33h 35m
Faro
Mon 5/18
9:45 pm-4:25 pm
1 stop23h 40m
$737
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Wed 9/16
7:25 pm-6:55 am
2 stops30h 30m
Porto
Wed 11/4
12:35 pm-9:24 am
2 stops25h 49m
$765
BostonVelas
BOS - SJZ
BOSSJZ
Boston Logan Intl
Fri 9/18
11:45 am-8:30 am
1 stop16h 45m
Velas Sao Jorge Island
Fri 9/25
10:55 am-7:50 pm
1 stop12h 55m
$769
BostonFaro
BOS - FAO
BOSFAO
Boston Logan Intl
Sun 9/13
9:34 am-9:55 am
1 stop19h 21m
Faro
Tue 9/22
11:40 am-10:17 am
2 stops27h 37m
$774
BostonFaro
BOS - FAO
BOSFAO
Boston Logan Intl
Wed 5/13
2:22 pm-11:20 am
2 stops15h 58m
Faro
Mon 5/18
11:40 am-11:35 pm
2 stops16h 55m
$792
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Maine to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Maine with our price prediction graph.
BOS-PDL
BOS-TER
BOS-FAO
BOS-OPO
BOS-PIX
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 Maine to Portugal
USME-PT0
BOS-PDL
BOS-TER
BOS-FAO
BOS-OPO
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Maine 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 Maine 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 Maine to Portugal by cabin class
Find flights from Maine to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Maine and Portugal flights
Browse other Maine and Portugal flight options. Last updated on May 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Portugal
Find the right flight back to Maine after your stay in Portugal
Maine to Portugal flights
Consider these flights traveling from Maine to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top airline flying from Maine to Portugal
Discover the top airline that operate flights from Maine 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 May 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$550 | Average$729 | FlexibilityNo cancel fee | On-time69% |