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PWM - OPO

$808 Find cheap flights from Portland, Maine to Porto

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Porto departing on 10/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 6/3
Mon 6/10

Search hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Porto, as well as popular online travel agencies
In the last 7 days travelers have searched 43,693,958 times on KAYAK, and here is why:

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Cheap flight deals from Portland to Porto (PWM-OPO)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:00 pm - 9:45 amPWM-OPO
11h 45m1 stop
6:00 am - 5:30 pmOPO-PWM
16h 30m2 stops
$808United Airlines
Find Deal
Fri, Oct 25 - Wed, Nov 6
6:05 am - 9:45 amPWM-OPO
22h 40m2 stops
6:00 am - 11:56 pmOPO-PWM
22h 56m2 stops
$812United Airlines
Find Deal
Fri, Oct 25 - Wed, Nov 6
2:51 pm - 3:30 pmPWM-OPO
19h 39m2 stops
5:00 am - 12:24 amOPO-PWM
24h 24m2 stops
$1,049Delta
Find Deal
Thu, May 30 - Thu, Jun 13
2:32 pm - 9:45 amPWM-OPO
14h 13m2 stops
12:35 pm - 6:26 pmOPO-PWM
10h 51m1 stop
$1,072United Airlines
Find Deal
Thu, May 30 - Thu, Jun 13
1:07 pm - 11:40 amPWM-OPO
17h 33m2 stops
12:25 pm - 4:42 pmOPO-PWM
33h 17m3 stops
$1,239American Airlines
Find Deal
Fri, Oct 25 - Wed, Nov 6
3:05 pm - 3:20 pmPWM-OPO
19h 15m3 stops
8:55 am - 11:17 pmOPO-PWM
19h 22m3 stops
$1,279Air Canada
Find Deal
Fri, Oct 25 - Wed, Nov 6
3:41 pm - 3:55 pmPWM-OPO
19h 14m2 stops
12:20 pm - 11:54 amOPO-PWM
28h 34m3 stops
$3,195American Airlines
Find Deal
Thu, May 30 - Thu, Jun 13

Good to know

Cheapest flight

$808
Flight from Portland to Porto

When to book flights from Portland to Porto

Are your dates flexible? Find out the best times to travel from Portland to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Porto

  • What is the cheapest flight from Portland, Maine to Porto?

    In the last 3 days, the lowest price for a flight from Portland, Maine to Porto was $808 for a round-trip ticket.

  • Do I need a passport to fly between Portland and Porto?

    Yes

  • Which airports will I be using when flying from Portland to Porto?

    When flying out of Portland you will be using Portland. You will be landing at Porto, also known as Porto.

  • Which aircraft models fly most regularly from Portland to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Porto?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Portland and Porto, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Portland to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Portland with another airline. Booking your flights between Portland and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Portland to Porto

 
See real verified KAYAK customer reviews for airlines flying from Portland to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
United AirlinesOverall score based on 11125 reviews
7.7Boarding
8.1Crew
6.7Food
7.1Entertainment
7.2Comfort
Airline reviews

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

2.0 Mediocretimothy, May 2024SBA - DEN
Read more about United Airlines reviews

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Food was terrible Not many options Stewards dont care Delay

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

Portland - Porto Flights

Departure:

Portland (PWM)United States

Destination:

Porto (OPO)Portugal

Cabin classes:

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