Cheap flights from Portland, Maine to Portugal from $348
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Portugal departing on 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Air Canada flights from Portland, Maine to Portugal
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Fly from
Fly to
Route
Depart
Return
PortlandPorto
PWM Portland - OPO Porto
PWMOPO
Portland
Sun 3/7
5:06 pm-9:30 am
1 stop11h 24m
Porto
Wed 3/17
6:00 am-9:27 pm
2 stops19h 27m
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Tue 2/16
8:55 am-8:10 am
1 stop18h 15m
Lisbon Humberto Delgado
Tue 3/30
11:25 am-4:09 pm
2 stops33h 44m
PortlandPorto
PWM Portland - OPO Porto
PWMOPO
Portland
Sun 3/7
5:45 am-9:30 am
2 stops22h 45m
Porto
Wed 3/17
6:00 am-6:13 pm
2 stops16h 13m
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Tue 3/2
8:55 am-8:10 am
1 stop18h 15m
Lisbon Humberto Delgado
Wed 3/10
11:20 am-9:27 pm
2 stops39h 07m
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Sun 3/7
5:06 pm-8:10 am
1 stop10h 04m
Lisbon Humberto Delgado
Wed 3/17
5:00 am-8:19 am
2 stops31h 19m
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Tue 3/2
8:55 am-10:05 am
2 stops20h 10m
Lisbon Humberto Delgado
Wed 3/10
11:20 am-9:27 pm
2 stops39h 07m
PortlandPorto
PWM Portland - OPO Porto
PWMOPO
Portland
Sun 3/7
11:17 am-9:30 am
1 stop17h 13m
Porto
Wed 3/17
12:35 pm-10:57 pm
1 stop14h 22m
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Sun 3/7
5:45 am-8:10 am
2 stops21h 25m
Lisbon Humberto Delgado
Wed 3/17
5:00 am-8:19 am
2 stops31h 19m
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Tue 2/16
2:35 pm-3:10 pm
2 stops19h 35m
Lisbon Humberto Delgado
Tue 3/30
7:35 pm-4:13 pm
2 stops25h 38m
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Tue 3/2
3:15 pm-8:10 am
1 stop11h 55m
Lisbon Humberto Delgado
Wed 3/10
11:55 am-7:24 pm
1 stop12h 29m
See travel insights to Portugal from
How to get the cheapest flight ticket from Portland, Maine to Portugal
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest airline that flies from Portland to Portugal?
Air Canada and American Airlines are the most popular carriers operating from Portland to Portugal
What airlines fly to Portugal?
TAP AIR PORTUGAL, Azores Airlines and Delta are the top three most popular airlines that fly to Portugal from Portland, Maine according to our data. TAP AIR PORTUGAL is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 21 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.
Cheap Portland, Maine to Portugal flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Portugal
Frequently asked questions about flying from Portland, Maine to Portugal
When did momondo last update prices for flights from Portland Airport to Portugal?
Prices for flights from Portland Airport to Portugal are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Portugal?
As of October 2026, there is 1 operator available to choose from for flights from Portland Airport to Portugal.
How old do you have to be to fly from Portland Airport to Portugal?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Portland, Maine to Portugal
Compare and see reviews for airlines that fly from Portland, Maine to Portugal with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $550 | Free Cancellation | Rating 7.4 10,331 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Portland to Portugal?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Portugal for you.
Can I find flights from Portland to Portugal with flexible booking policies on momondo?
Flights from Portland to Portugal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Portland to Portugal?
Once you have performed a search for Portland to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Portland to Portugal right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Portugal from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.