$299+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
May 21 — May 281
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 April 21, 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 April 21, 2026.
This United Airlines deal was found by Cheapflights users on 4/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:00 am
BOS
- OPO
2 stops22h 30m
United Airlines
Wed 11/1112:35 pm
OPO
- BOS
2 stops16h 19m
United Airlines
Deal found 4/19![United Airlines logo]()
$601
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Mon 10/126:50 pm
BOS
- OPO
1 stop31h 10m
United Airlines
Wed 11/186:00 am
OPO
- BOS
1 stop12h 10m
United Airlines
Deal found 4/20![United Airlines logo]()
$602
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 9/258:50 pm
BOS
- FAO
2 stops17h 55m
Multiple Airlines
Thu 10/89:40 am
FAO
- BOS
1 stop16h 35m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$602
This United Airlines deal was found by Cheapflights users on 4/18. 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.
Mon 11/236:30 pm
BOS
- OPO
1 stop10h 00m
United Airlines
Fri 12/46:00 am
OPO
- BOS
1 stop12h 10m
United Airlines
Deal found 4/18![United Airlines logo]()
$603
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 10/149:45 am
BOS
- OPO
2 stops16h 15m
United Airlines
Wed 11/1812:35 pm
OPO
- BOS
2 stops16h 19m
United Airlines
Deal found 4/20![United Airlines logo]()
$604
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 10/1410:40 am
BOS
- OPO
1 stop15h 20m
United Airlines
Wed 10/2112:45 pm
OPO
- BOS
2 stops30h 37m
United Airlines
Deal found 4/20![United Airlines logo]()
$605
This Lufthansa deal was found by Cheapflights users on 4/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:50 pm
BOS
- OPO
1 stop15h 40m
SWISS
Thu 11/1212:05 pm
OPO
- BOS
1 stop13h 15m
SWISS
Deal found 4/20![SWISS logo]()
$606
This Delta deal was found by Cheapflights users on 4/20. 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.
Sat 10/3110:00 pm
BOS
- OPO
1 stop31h 05m
Delta
Fri 11/135:00 am
OPO
- BOS
1 stop18h 55m
Delta
Deal found 4/20![Delta logo]()
$607
This Justfly.com deal was found by Cheapflights users on 4/17. 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 11/48:40 pm
BOS
- OPO
1 stop11h 10m
Multiple Airlines
Mon 11/97:20 pm
OPO
- BOS
1 stop30h 00m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$608
This Delta deal was found by Cheapflights users on 4/20. 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.
Wed 10/281:10 pm
BOS
- OPO
1 stop14h 55m
Delta
Wed 11/411:25 am
OPO
- BOS
2 stops16h 01m
Delta
Deal found 4/20![Delta logo]()
$611
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 9/148:50 pm
BOS
- OPO
2 stops21h 40m
Multiple Airlines
Wed 9/232:05 pm
OPO
- BOS
1 stop12h 10m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$612
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/39:50 pm
BOS
- FAO
2 stops38h 45m
Multiple Airlines
Tue 5/196:45 pm
FAO
- BOS
1 stop31h 20m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$616
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 April 21, 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 April 21, 2026.
This Delta deal was found by Cheapflights users on 4/19. 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.
Sun 4/267:05 pm
BOS
- OPO
1 stop15h 20m
Delta
Wed 5/65:00 am
OPO
- BOS
1 stop18h 30m
Delta
Deal found 4/19![Delta logo]()
$616
This KLM deal was found by Cheapflights users on 4/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:05 pm
BOS
- OPO
1 stop15h 20m
Multiple Airlines
Sun 5/35:55 am
OPO
- BOS
1 stop18h 45m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$666
This LEVEL deal was found by Cheapflights users on 4/16. 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.
Sun 7/511:50 pm
BOS
- LIS
1 stop27h 40m
LEVEL
Wed 7/159:15 pm
LIS
- BOS
1 stop29h 00m
LEVEL
Deal found 4/16![LEVEL logo]()
$688
This United Airlines deal was found by Cheapflights users on 4/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/43:32 pm
BOS
- FAO
2 stops17h 58m
United Airlines
Tue 5/1911:40 am
FAO
- BOS
2 stops27h 38m
United Airlines
Deal found 4/21![United Airlines logo]()
$709
This KLM deal was found by Cheapflights users on 4/17. 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 5/64:35 pm
BOS
- FAO
1 stop33h 35m
KLM
Tue 5/1210:00 am
FAO
- BOS
2 stops18h 37m
KLM
Deal found 4/17![KLM logo]()
$718
This Gotogate deal was found by Cheapflights users on 4/16. 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 4/249:15 pm
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Thu 5/216:05 pm
PDL
- BOS
Nonstop5h 45m
Azores Airlines
Deal found 4/16![Azores Airlines logo]()
$837
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/20. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:30 pm
BOS
- FNC
1 stop18h 20m
TAP AIR PORTUGAL
Wed 5/63:05 pm
FNC
- BOS
1 stop10h 15m
TAP AIR PORTUGAL
Deal found 4/20![TAP AIR PORTUGAL logo]()
$913
This American Airlines deal was found by Cheapflights users on 4/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:46 pm
PWM
- LIS
1 stop9h 19m
American Airlines
Mon 9/1411:05 am
LIS
- PWM
1 stop17h 19m
American Airlines
Deal found 4/18![American Airlines logo]()
$1,046
This Air Transat deal was found by Cheapflights users on 4/19. 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 Air Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2410:05 am
BOS
- LIS
1 stop18h 30m
Air Transat
Sun 6/2811:35 am
LIS
- BOS
1 stop26h 30m
Air Transat
Deal found 4/19![Air Transat logo]()
$1,063
This Scandinavian Airlines deal was found by Cheapflights users on 4/19. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/245:40 pm
BOS
- FNC
2 stops18h 10m
Scandinavian Airlines
Sat 5/25:40 pm
FNC
- BOS
2 stops26h 55m
Scandinavian Airlines
Deal found 4/19![Scandinavian Airlines logo]()
$1,106
This Icelandair deal was found by Cheapflights users on 4/20. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1511:00 pm
BOS
- LIS
2 stops17h 55m
Icelandair
Thu 5/218:20 am
LIS
- BOS
2 stops15h 30m
Icelandair
Deal found 4/20![Icelandair logo]()
$1,182
This Delta deal was found by Cheapflights users on 4/17. 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 4/277:05 pm
BOS
- OPO
1 stop15h 20m
Delta
Wed 5/205:00 am
OPO
- BOS
1 stop18h 30m
Delta
Deal found 4/17![Delta logo]()
$646
This Delta deal was found by Cheapflights users on 4/17. 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 4/297:05 pm
BOS
- OPO
1 stop15h 20m
Delta
Fri 5/229:25 am
OPO
- BOS
2 stops19h 12m
Delta
Deal found 4/17![Delta logo]()
$656
This KLM deal was found by Cheapflights users on 4/21. 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 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
Tue 5/198:15 pm
FAO
- BOS
1 stop25h 10m
KLM
Deal found 4/21![KLM logo]()
$737
This Gurufare deal was found by Cheapflights users on 4/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/259:15 pm
BOS
- TER
Nonstop5h 05m
Multiple Airlines
Sun 5/3111:55 am
TER
- BOS
1 stop11h 55m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$774
This KLM deal was found by Cheapflights users on 4/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/154:40 pm
BOS
- FAO
1 stop33h 35m
KLM
Wed 9/28:50 am
FAO
- BOS
1 stop14h 40m
KLM
Deal found 4/18![KLM logo]()
$738
This Delta deal was found by Cheapflights users on 4/19. 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.
Tue 5/121:29 pm
BOS
- OPO
2 stops16h 26m
Delta
Thu 5/215:55 am
OPO
- BOS
1 stop12h 30m
Delta
Deal found 4/19![Delta logo]()
$692
This United Airlines deal was found by Cheapflights users on 4/16. 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 6/245:45 am
BOS
- OPO
1 stop20h 15m
United Airlines
Wed 8/262:25 pm
OPO
- BOS
1 stop12h 02m
United Airlines
Deal found 4/16![United Airlines logo]()
$841
This oojo deal was found by Cheapflights users on 4/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/309:15 pm
BOS
- TER
1 stop8h 05m
Multiple Airlines
Sun 6/76:50 am
TER
- BOS
1 stop7h 30m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$788
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 5/65:45 pm
BOS
- OPO
1 stop12h 35m
United Airlines
Thu 5/2112:35 pm
OPO
- BOS
2 stops17h 39m
United Airlines
Deal found 4/20![United Airlines logo]()
$857
This Delta deal was found by Cheapflights users on 4/18. 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.
Mon 5/41:30 pm
BOS
- OPO
2 stops16h 10m
Delta
Mon 5/186:30 am
OPO
- BOS
1 stop11h 55m
Delta
Deal found 4/18![Delta logo]()
$722
This KAYAK deal was found by Cheapflights users on 4/17. 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.
Sat 5/309:15 pm
BOS
- TER
2 stops16h 05m
Azores Airlines
Sun 6/710:30 pm
TER
- BOS
2 stops25h 20m
Azores Airlines
Deal found 4/17![Azores Airlines logo]()
$1,015
This LEVEL deal was found by Cheapflights users on 4/20. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:50 pm
BOS
- LIS
1 stop28h 40m
LEVEL
Mon 5/49:10 am
LIS
- BOS
1 stop16h 55m
LEVEL
Deal found 4/20![LEVEL logo]()
$1,037
This United Airlines deal was found by Cheapflights users on 4/17. 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 5/107:28 pm
BOS
- PDL
1 stop9h 12m
United Airlines
Fri 5/2211:00 am
PDL
- BOS
1 stop9h 38m
United Airlines
Deal found 4/17![United Airlines logo]()
$865
This Mytrip deal was found by Cheapflights users on 4/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/154:45 pm
BOS
- FAO
3 stops19h 35m
Multiple Airlines
Wed 6/1711:15 am
FAO
- BOS
3 stops32h 30m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$874
This KLM deal was found by Cheapflights users on 4/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:55 pm
BOS
- FAO
1 stop19h 30m
KLM
Tue 6/308:20 pm
FAO
- BOS
1 stop21h 58m
KLM
Deal found 4/19![KLM logo]()
$878
This KAYAK deal was found by Cheapflights users on 4/16. 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.
Sat 5/211:15 pm
BOS
- FNC
1 stop10h 00m
TAP AIR PORTUGAL
Fri 5/85:50 am
FNC
- BOS
2 stops31h 10m
TAP AIR PORTUGAL
Deal found 4/16![TAP AIR PORTUGAL logo]()
$1,098
This Delta deal was found by Cheapflights users on 4/16. 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 4/246:55 pm
BOS
- OPO
1 stop10h 45m
Delta
Thu 4/305:55 am
OPO
- BOS
2 stops18h 40m
Delta
Deal found 4/16![Delta logo]()
$763
This KLM deal was found by Cheapflights users on 4/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:00 pm
BOS
- FAO
1 stop20h 25m
KLM
Sun 7/129:50 pm
FAO
- BOS
1 stop25h 40m
KLM
Deal found 4/18![KLM logo]()
$878
This United Airlines deal was found by Cheapflights users on 4/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:44 pm
BOS
- PDL
1 stop10h 56m
United Airlines
Thu 7/2311:00 am
PDL
- BOS
1 stop9h 38m
United Airlines
Deal found 4/19![United Airlines logo]()
$890
Last-minute flights from Maine to PortugalDiscover last-minute flight deals from Maine to Portugal. Data last updated April 21, 2026 and is based on user searches.
Discover last-minute flight deals from Maine to Portugal. Data last updated April 21, 2026 and is based on user searches.
This Lufthansa deal was found by Cheapflights users on 4/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:40 pm
BOS
- OPO
1 stop14h 55m
Multiple Airlines
Thu 4/306:20 am
OPO
- BOS
1 stop16h 20m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$611
This Justfly.com deal was found by Cheapflights users on 4/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:05 pm
BOS
- OPO
1 stop22h 20m
Lufthansa
Tue 4/286:20 am
OPO
- BOS
1 stop16h 20m
Lufthansa
Deal found 4/20![Lufthansa logo]()
$613
This KAYAK deal was found by Cheapflights users on 4/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:05 pm
BOS
- OPO
1 stop22h 20m
Lufthansa
Fri 5/16:20 am
OPO
- BOS
1 stop16h 20m
Lufthansa
Deal found 4/20![Lufthansa logo]()
$614
This KAYAK deal was found by Cheapflights users on 4/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:20 pm
BOS
- OPO
1 stop13h 05m
SWISS
Mon 5/47:20 pm
OPO
- BOS
1 stop24h 50m
SWISS
Deal found 4/20![SWISS logo]()
$606
This Air Canada deal was found by Cheapflights users on 4/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:40 am
BOS
- OPO
2 stops19h 45m
Air Canada
Thu 4/3011:05 am
OPO
- BOS
2 stops27h 40m
Air Canada
Deal found 4/20![Air Canada logo]()
$618
This Justfly.com deal was found by Cheapflights users on 4/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:40 am
BOS
- OPO
2 stops19h 45m
Air Canada
Wed 4/2912:00 pm
OPO
- BOS
2 stops34h 45m
Air Canada
Deal found 4/21![Air Canada logo]()
$623
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:50 pm
BOS
- OPO
1 stop12h 20m
Iberia
Sat 5/21:45 pm
OPO
- BOS
1 stop12h 20m
Iberia
Deal found 4/20![Iberia logo]()
$619
This KLM deal was found by Cheapflights users on 4/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:05 pm
BOS
- OPO
1 stop15h 20m
Multiple Airlines
Wed 5/65:55 am
OPO
- BOS
1 stop14h 00m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$616
This FlightHub deal was found by Cheapflights users on 4/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:05 pm
BOS
- OPO
1 stop22h 20m
Multiple Airlines
Mon 5/410:10 am
OPO
- BOS
2 stops37h 10m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$615
This FlightHub deal was found by Cheapflights users on 4/21. 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 FlightHub 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 4/21![Austrian Airlines logo]()
$617
This Iberia deal was found by Cheapflights users on 4/17. 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.
Mon 4/2710:50 pm
BOS
- OPO
1 stop12h 20m
Iberia
Thu 5/218:35 am
OPO
- BOS
1 stop17h 30m
Iberia
Deal found 4/17![Iberia logo]()
$620
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/39:50 pm
BOS
- FAO
2 stops38h 45m
Multiple Airlines
Tue 5/196:45 pm
FAO
- BOS
1 stop31h 20m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$616
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 April 21, 2026.
Search for one-way flight options from Maine to Portugal. Find affordable one-way fares based on user searches. Data last updated April 21, 2026.
This Booking.com deal was found by Cheapflights users on 4/17. 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 10/29:15 pm
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Deal found 4/17![Azores Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 5/188:50 pm
BOS
- FAO
2 stops15h 05m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$301
This Booking.com deal was found by Cheapflights users on 4/19. 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.
Tue 9/159:15 pm
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Deal found 4/19![Azores Airlines logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 4/18. 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.
Sat 4/2511:00 pm
BOS
- OPO
2 stops38h 30m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$303
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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.
Wed 10/1410:45 pm
BOS
- PDL
1 stop16h 05m
TAP AIR PORTUGAL
Deal found 4/17![TAP AIR PORTUGAL logo]()
$308
This Orbitz deal was found by Cheapflights users on 4/17. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3010:50 pm
BOS
- OPO
1 stop28h 10m
Iberia
Deal found 4/17![Iberia logo]()
$309
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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.
Fri 9/1111:45 am
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Deal found 4/17![Azores Airlines logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 4/18. 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.
Sat 5/309:15 pm
BOS
- PDL
Nonstop5h 05m
Azores Airlines
Deal found 4/18![Azores Airlines logo]()
$311
This SmartFares deal was found by Cheapflights users on 4/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/279:15 pm
BOS
- PDL
1 stop19h 45m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$314
This eDestinos deal was found by Cheapflights users on 4/17. 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.
Mon 8/2410:45 pm
BOS
- PDL
1 stop12h 00m
TAP AIR PORTUGAL
Deal found 4/17![TAP AIR PORTUGAL logo]()
$315
This oojo deal was found by Cheapflights users on 4/17. 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 10/69:15 pm
BOS
- TER
1 stop11h 40m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/210:50 pm
BOS
- OPO
1 stop28h 10m
LEVEL
Deal found 4/16![LEVEL logo]()
$320
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 April 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $601 (Delta) |
One-way from | $299 (Booking.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,233 |
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 April 21, 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
Sun 4/26
7:05 pm-3:25 pm
1 stop15h 20m
Porto
Wed 5/6
5:00 am-6:30 pm
1 stop18h 30m
$616
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Mon 4/27
7:05 pm-3:25 pm
1 stop15h 20m
Porto
Wed 5/20
5:00 am-6:30 pm
1 stop18h 30m
$646
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Wed 4/29
7:05 pm-3:25 pm
1 stop15h 20m
Porto
Fri 5/22
9:25 am-11:37 pm
2 stops19h 12m
$656
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Sun 4/26
7:05 pm-3:25 pm
1 stop15h 20m
Porto
Sun 5/3
5:55 am-7:40 pm
1 stop18h 45m
$666
BostonLisbon
BOS - LIS
BOSLIS
Boston Logan Intl
Sun 7/5
11:50 pm-8:30 am
1 stop27h 40m
Lisbon Humberto Delgado
Wed 7/15
9:15 pm-9:15 pm
1 stop29h 00m
$688
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Tue 5/12
1:29 pm-10:55 am
2 stops16h 26m
Porto
Thu 5/21
5:55 am-1:25 pm
1 stop12h 30m
$692
BostonFaro
BOS - FAO
BOSFAO
Boston Logan Intl
Mon 5/4
3:32 pm-2:30 pm
2 stops17h 58m
Faro
Tue 5/19
11:40 am-10:18 am
2 stops27h 38m
$709
BostonFaro
BOS - FAO
BOSFAO
Boston Logan Intl
Wed 5/6
4:35 pm-7:10 am
1 stop33h 35m
Faro
Tue 5/12
10:00 am-11:37 pm
2 stops18h 37m
$718
BostonPorto
BOS - OPO
BOSOPO
Boston Logan Intl
Mon 5/4
1:30 pm-10:40 am
2 stops16h 10m
Porto
Mon 5/18
6:30 am-1:25 pm
1 stop11h 55m
$722
BostonFaro
BOS - FAO
BOSFAO
Boston Logan Intl
Wed 5/13
4:35 pm-7:10 am
1 stop33h 35m
Faro
Tue 5/19
8:15 pm-4:25 pm
1 stop25h 10m
$737
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-OPO
BOS-LIS
BOS-FAO
BOS-PDL
BOS-FNC
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-OPO
BOS-LIS
BOS-FAO
BOS-PDL
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 April 21, 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 April 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$550 | Average$721 | FlexibilityNo cancel fee | On-time69% |