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PWM - SNN

$872 Find cheap flights from Portland, Maine to Shannon

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 Shannon departing on 9/12. 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
Wed 6/5
Wed 6/12

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Shannon, 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 Shannon, as well as popular online travel agencies
In the last 7 days travelers have searched 42,830,901 times on KAYAK, and here is why:

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Cheap flight deals from Portland to Shannon (PWM-SNN)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Shannon 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
5:30 pm - 10:50 amPWM-SNN
12h 20m1 stop
12:50 pm - 11:38 pmSNN-PWM
15h 48m1 stop
$872KLM
Find Deal
Thu, Sep 12 - Fri, Sep 20
6:00 am - 7:30 amPWM-SNN
20h 30m2 stops
9:30 am - 11:59 pmSNN-PWM
19h 29m2 stops
$877United Airlines
Find Deal
Thu, Sep 12 - Fri, Sep 20
6:05 am - 7:30 amPWM-SNN
20h 25m1 stop
9:30 am - 8:55 pmSNN-PWM
16h 25m2 stops
$1,192United Airlines
Find Deal
Fri, Jun 28 - Thu, Jul 4
6:05 am - 7:30 amPWM-SNN
20h 25m1 stop
9:30 am - 2:18 pmSNN-PWM
33h 48m1 stop
$1,197United Airlines
Find Deal
Fri, Jun 28 - Thu, Jul 4
2:08 pm - 10:50 amPWM-SNN
15h 42m1 stop
12:50 pm - 12:24 amSNN-PWM
16h 34m1 stop
$1,932KLM
Find Deal
Mon, Jul 1 - Thu, Jul 4
1:02 pm - 10:50 amPWM-SNN
16h 48m2 stops
12:50 pm - 12:24 amSNN-PWM
16h 34m1 stop
$1,937Delta
Find Deal
Mon, Jul 1 - Thu, Jul 4
11:35 am - 11:20 amPWM-SNN
18h 45m3 stops
7:40 am - 10:00 amSNN-PWM
31h 20m3 stops
$2,167Air Canada
Find Deal
Mon, Jul 1 - Thu, Jul 4
3:51 pm - 4:10 pmPWM-SNN
19h 19m3 stops
7:40 am - 10:00 amSNN-PWM
31h 20m3 stops
$2,173Air Canada
Find Deal
Sun, Jun 30 - Thu, Jul 4
3:50 pm - 4:10 pmPWM-SNN
19h 20m3 stops
7:40 am - 10:00 amSNN-PWM
31h 20m3 stops
$2,216Air Canada
Find Deal
Sat, Jun 29 - Thu, Jul 4
11:41 am - 11:20 amPWM-SNN
18h 39m2 stops
7:40 am - 8:20 pmSNN-PWM
17h 40m2 stops
$3,070American Airlines
Find Deal
Sat, Jun 29 - Thu, Jul 4

Good to know

Cheapest flight

$872
Flight from Portland to Shannon

When to book flights from Portland to Shannon

Are your dates flexible? Find out the best times to travel from Portland to Shannon 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 Shannon

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

    In the last 3 days, the lowest price for a flight from Portland, Maine to Shannon was $872 for a round-trip ticket.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Portland and on arrival in Shannon.

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

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

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

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

  • Which airline alliances offer flights from Portland to Shannon?

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

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

    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 Shannon.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon 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 Shannon?

    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 Shannon with an airline and back to Portland with another airline. Booking your flights between Portland and SNN 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 Shannon?

    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 Shannon 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 Shannon

 
See real verified KAYAK customer reviews for airlines flying from Portland to Shannon. 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 Shannon? 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.
7.4
United AirlinesOverall score based on 11090 reviews
6.7Food
7.2Comfort
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

2.0 MediocreMichael, May 2024IAH - PIT
Read more about United Airlines reviews

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

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

Portland - Shannon Flights

Departure:

Portland (PWM)United States

Destination:

Shannon (SNN)Ireland

Cabin classes:

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