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Cheap flights from Portland to Shannon from €407

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Shannon departing on 5/3. 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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0 bags
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Cheap return flights

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American Airlines Logo
13:55 - 16:45PDX-SNN
18h 50m2 stops
American Airlines Logo
07:50 - 16:55SNN-PDX
16h 05m1 stop
€407American Airlines
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Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
12:05 - 16:45PDX-SNN
20h 40m2 stops
American Airlines Logo
07:50 - 16:55SNN-PDX
16h 05m1 stop
€408American Airlines
Find Deal
Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
17:45 - 16:45PDX-SNN
15h 00m1 stop
American Airlines Logo
07:50 - 22:11SNN-PDX
22h 21m2 stops
€413American Airlines
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Mon, 19 Jan - Thu, 29 Jan
American Airlines Logo
11:46 - 16:45PDX-SNN
20h 59m2 stops
American Airlines Logo
07:50 - 22:46SNN-PDX
21h 56m2 stops
€416American Airlines
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Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
06:00 - 11:30PDX-SNN
21h 30m2 stops
American Airlines Logo
07:50 - 22:11SNN-PDX
22h 21m2 stops
€416American Airlines
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Mon, 19 Jan - Thu, 29 Jan
Lufthansa Logo
15:15 - 11:15PDX-SNN
36h 00m2 stops
Lufthansa Logo
10:55 - 20:33SNN-PDX
41h 38m2 stops
€421Lufthansa
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Thu, 30 Apr - Thu, 14 May
United Airlines Logo
07:30 - 10:15PDX-SNN
18h 45m2 stops
United Airlines Logo
12:30 - 19:31SNN-PDX
15h 01m1 stop
€423United Airlines
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Thu, 30 Apr - Thu, 14 May
American Airlines Logo
15:18 - 16:10PDX-SNN
16h 52m2 stops
American Airlines Logo
21:15 - 17:40SNN-PDX
28h 25m1 stop
€433American Airlines
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Tue, 12 May - Thu, 21 May
Lufthansa Logo
15:15 - 11:15PDX-SNN
36h 00m2 stops
Lufthansa Logo
10:55 - 00:54SNN-PDX
45h 59m2 stops
€465Lufthansa
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Thu, 30 Apr - Thu, 14 May
United Airlines Logo
07:30 - 10:15PDX-SNN
18h 45m2 stops
United Airlines Logo
12:30 - 00:54SNN-PDX
20h 24m2 stops
€498United Airlines
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Thu, 30 Apr - Thu, 14 May

American Airlines flights from Portland to Shannon, Clare

Our best American Airlines deals on Portland to Shannon, Clare flight tickets
American Airlines
5 Mar
PDX11:46Portland
20h 59m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€407
Find similar
American Airlines
5 Mar
PDX13:55Portland
18h 50m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
20h 10m
2 stops
PDX21:00Portland
€416
Find similar
American Airlines
2 Dec
PDX07:40Portland
19h 50m
2 stops
SNN11:30Shannon
9 Dec
SNN07:50Shannon
21h 34m
2 stops
PDX21:24Portland
€416
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Lufthansa flights from Portland to Shannon, Clare

Our best Lufthansa deals on Portland to Shannon, Clare flight tickets
Lufthansa
30 Apr
PDX15:15Portland
36h 00m
2 stops
SNN11:15Shannon
14 May
SNN10:55Shannon
41h 38m
2 stops
PDX20:33Portland
€421
Find similar
Lufthansa
30 Apr
PDX15:15Portland
36h 00m
2 stops
SNN11:15Shannon
14 May
SNN10:55Shannon
41h 38m
2 stops
PDX20:33Portland
€422
Find similar
Lufthansa
12 May
PDX15:25Portland
34h 45m
2 stops
SNN10:10Shannon
21 May
SNN10:55Shannon
44h 01m
2 stops
PDX22:56Portland
€562
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momondo Fare Finder

 
Customise your flight search to find flights from Portland 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 16 November 2025.
Use the filters below to find and compare flights from Portland to Shannon, Clare that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

13:55-16:45

2 stops18h 50m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€407

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

12:05-16:45

2 stops20h 40m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€408

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 19/1

17:45-16:45

1 stop15h 00m

Shannon

Thu 29/1

07:50-22:11

2 stops22h 21m

€413

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

11:46-16:45

2 stops20h 59m

Shannon

Wed 11/3

07:50-22:46

2 stops21h 56m

€416

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 19/1

06:00-11:30

2 stops21h 30m

Shannon

Thu 29/1

07:50-22:11

2 stops22h 21m

€416

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

15:15-11:15

2 stops36h 00m

Shannon

Thu 14/5

10:55-20:33

2 stops41h 38m

€421

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

07:30-10:15

2 stops18h 45m

Shannon

Thu 14/5

12:30-19:31

1 stop15h 01m

€423

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 12/5

15:18-16:10

2 stops16h 52m

Shannon

Thu 21/5

21:15-17:40

1 stop28h 25m

€433

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

15:15-11:15

2 stops36h 00m

Shannon

Thu 14/5

10:55-00:54

2 stops45h 59m

€465

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

07:30-10:15

2 stops18h 45m

Shannon

Thu 14/5

12:30-00:54

2 stops20h 24m

€498

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Portland to Shannon, Clare

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

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

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

Direct flights

None
There are no direct flights from Portland to Shannon, Clare. There are no popular flight routes from Portland to Shannon, Clare.
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  • How far is Portland to Shannon by plane?

    The distance between Portland and Shannon is about 7406.8 km. A reasonable flight in good conditions will take 12h 40m.

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

    Prices for flights from Portland Airport to Shannon Airport are updated daily.

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

    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 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 necessary travel and health documents for your Shannon Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

    Search flight deals from Portland 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 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?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near Shannon?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Shannon. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Shannon from Portland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Portland to Shannon?

Once all potential Portland to Shannon flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Shannon 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.

An easier way to manage your Shannon, Clare trip

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