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Cheap flights from Portland, Maine to Shannon from €611

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Shannon departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Portland, Maine to Shannon

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
14:35 - 11:10
PWM
-
SNN
15h 35m
1 stop
KLM Logo
13:05 - 23:59
SNN
-
PWM
15h 54m
1 stop
€611KLM
Wed, 9 Sep - Thu, 17 Sep
Multiple Airlines Logo
12:50 - 11:10
PWM
-
SNN
17h 20m
2 stops
Multiple Airlines Logo
13:05 - 23:59
SNN
-
PWM
15h 54m
1 stop
€615Multiple Airlines
Wed, 9 Sep - Thu, 17 Sep
Delta Logo
12:50 - 11:10
PWM
-
SNN
17h 20m
2 stops
Delta Logo
13:05 - 11:55
SNN
-
PWM
27h 50m
2 stops
€624Delta
Wed, 9 Sep - Thu, 17 Sep
United Airlines Logo
06:00 - 07:30
PWM
-
SNN
20h 30m
1 stop
United Airlines Logo
12:30 - 23:30
SNN
-
PWM
16h 00m
1 stop
€709United Airlines
Thu, 30 Jul - Mon, 10 Aug
United Airlines Logo
06:00 - 07:30
PWM
-
SNN
20h 30m
2 stops
United Airlines Logo
12:30 - 23:30
SNN
-
PWM
16h 00m
1 stop
€713United Airlines
Thu, 30 Jul - Mon, 10 Aug
United Airlines Logo
06:00 - 07:30
PWM
-
SNN
20h 30m
1 stop
United Airlines Logo
12:30 - 23:30
SNN
-
PWM
16h 00m
1 stop
€740United Airlines
Thu, 30 Jul - Mon, 10 Aug
United Airlines Logo
10:55 - 07:30
PWM
-
SNN
15h 35m
2 stops
United Airlines Logo
09:30 - 21:41
SNN
-
PWM
17h 11m
1 stop
€744United Airlines
Thu, 30 Jul - Mon, 10 Aug
United Airlines Logo
05:15 - 07:30
PWM
-
SNN
21h 15m
2 stops
United Airlines Logo
09:30 - 14:38
SNN
-
PWM
34h 08m
2 stops
€754United Airlines
Thu, 30 Jul - Mon, 10 Aug
United Airlines Logo
06:00 - 07:30
PWM
-
SNN
20h 30m
1 stop
United Airlines Logo
09:30 - 21:51
SNN
-
PWM
17h 21m
1 stop
€804United Airlines
Tue, 9 Jun - Mon, 15 Jun
United Airlines Logo
20:15 - 07:30
PWM
-
SNN
30h 15m
2 stops
United Airlines Logo
12:30 - 23:30
SNN
-
PWM
16h 00m
1 stop
€809United Airlines
Tue, 9 Jun - Mon, 15 Jun

United Airlines flights from Portland, Maine to Shannon, Clare

Our best United Airlines deals on Portland, Maine to Shannon, Clare flight tickets
United Airlines
30 Jul
PWM06:00Portland
20h 30m
1 stop
SNN07:30Shannon
10 Aug
SNN12:30Shannon
16h 00m
1 stop
PWM23:30Portland
€709
United Airlines
30 Jul
PWM06:00Portland
20h 30m
2 stops
SNN07:30Shannon
10 Aug
SNN12:30Shannon
16h 00m
1 stop
PWM23:30Portland
€713
United Airlines
30 Jul
PWM06:00Portland
20h 30m
1 stop
SNN07:30Shannon
10 Aug
SNN12:30Shannon
16h 00m
1 stop
PWM23:30Portland
€740

Air Canada flights from Portland, Maine to Shannon, Clare

Our best Air Canada deals on Portland, Maine to Shannon, Clare flight tickets
Air Canada
9 Sept
PWM15:44Portland
19h 26m
3 stops
SNN16:10Shannon
17 Sept
SNN07:30Shannon
21h 01m
3 stops
PWM23:31Portland
€928
Air Canada
30 Jul
PWM15:16Portland
19h 54m
3 stops
SNN16:10Shannon
10 Aug
SNN07:30Shannon
21h 00m
3 stops
PWM23:30Portland
€1,099
Air Canada
30 Jul
PWM15:16Portland
19h 54m
3 stops
SNN16:10Shannon
10 Aug
SNN07:30Shannon
21h 00m
3 stops
PWM23:30Portland
€1,193

momondo Fare Finder

 
Customise your flight search to find flights from Portland, Maine to Shannon, Clare 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, momondo users made 13,528 searches. Data last updated 12 May 2026.
Use the filters below to find and compare flights from Portland, Maine to Shannon, Clare that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 9/9

14:35-11:10

1 stop15h 35m

Shannon

Thu 17/9

13:05-23:59

1 stop15h 54m

€611

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 9/9

12:50-11:10

2 stops17h 20m

Shannon

Thu 17/9

13:05-23:59

1 stop15h 54m

€615

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 9/9

12:50-11:10

2 stops17h 20m

Shannon

Thu 17/9

13:05-11:55

2 stops27h 50m

€624

PortlandShannon

PWM - SNN

PWMSNN

Portland

Thu 30/7

06:00-07:30

1 stop20h 30m

Shannon

Mon 10/8

12:30-23:30

1 stop16h 00m

€709

PortlandShannon

PWM - SNN

PWMSNN

Portland

Thu 30/7

06:00-07:30

2 stops20h 30m

Shannon

Mon 10/8

12:30-23:30

1 stop16h 00m

€713

PortlandShannon

PWM - SNN

PWMSNN

Portland

Thu 30/7

06:00-07:30

1 stop20h 30m

Shannon

Mon 10/8

12:30-23:30

1 stop16h 00m

€740

PortlandShannon

PWM - SNN

PWMSNN

Portland

Thu 30/7

10:55-07:30

2 stops15h 35m

Shannon

Mon 10/8

09:30-21:41

1 stop17h 11m

€744

PortlandShannon

PWM - SNN

PWMSNN

Portland

Thu 30/7

05:15-07:30

2 stops21h 15m

Shannon

Mon 10/8

09:30-14:38

2 stops34h 08m

€754

PortlandShannon

PWM - SNN

PWMSNN

Portland

Tue 9/6

06:00-07:30

1 stop20h 30m

Shannon

Mon 15/6

09:30-21:51

1 stop17h 21m

€804

PortlandShannon

PWM - SNN

PWMSNN

Portland

Tue 9/6

20:15-07:30

2 stops30h 15m

Shannon

Mon 15/6

12:30-23:30

1 stop16h 00m

€809

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Portland, Maine to Shannon, Clare

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Shannon, Clare according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Portland, Maine to Shannon, Clare (PWM to SNN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Shannon, Clare

Fastest flight time

15h 35m

Direct flights

None
The fastest flight from Portland, Maine to Shannon, Clare takes 15h 35m
There are no direct flights from Portland, Maine to Shannon, Clare. There are no popular flight routes from Portland, Maine to Shannon, Clare.
Search flight deals

Frequently asked questions about flying from Portland, Maine to Shannon, Clare

  • How far is Portland to Shannon by plane?

    The distance between Portland and Shannon is about 4512.9 km. 15h 35m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Portland Airport to Shannon Airport?

    Prices for flights from Portland Airport to Shannon Airport were last updated today.

  • How old do you have to be to fly from Portland Airport to Shannon Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Shannon Airport.

  • What documentation or ID do you need to fly to Shannon Airport?

    The travel and health documents you'll need for your trip to Shannon Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Shannon Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Portland, Maine to Shannon, Clare

  • How do I get Price Alerts for flights from Portland, Maine to Shannon, Clare?

    Search flight deals from Portland, Maine to Shannon, Clare. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Portland, Maine to Shannon, Clare with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Travelling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Limerick
Ennis
Tipperary
Killaloe
Nenagh
Lahinch
Adare
Bunratty

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Shannon?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Shannon from Portland.

Can I find flights from Portland to Shannon with flexible booking policies on momondo?

Flights from Portland to Shannon 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 Shannon?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Shannon from Portland.

I’m not ready to book a flight from Portland to Shannon right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Shannon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Shannon, Clare trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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