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Cheap flights from Portland to Shannon from €401

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 26/4. 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 to Shannon

Cheap return flights

Enter your travel dates to find the best prices.
American Airlines Logo
19:30 - 20:35
PDX
-
SNN
17h 05m1 stop
American Airlines Logo
07:40 - 17:40
SNN
-
PDX
18h 00m1 stop
€401American Airlines
Sun, 26 Apr - Wed, 6 May
American Airlines Logo
06:43 - 11:30
PDX
-
SNN
20h 47m2 stops
American Airlines Logo
07:50 - 16:55
SNN
-
PDX
16h 05m1 stop
€404American Airlines
Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
06:43 - 11:30
PDX
-
SNN
20h 47m2 stops
American Airlines Logo
07:50 - 23:07
SNN
-
PDX
22h 17m2 stops
€413American Airlines
Thu, 5 Mar - Wed, 11 Mar
Lufthansa Logo
14:14 - 11:15
PDX
-
SNN
37h 01m2 stops
Lufthansa Logo
10:55 - 00:48
SNN
-
PDX
21h 53m2 stops
€483Lufthansa
Thu, 30 Apr - Thu, 14 May
Multiple Airlines Logo
15:15 - 11:20
PDX
-
SNN
36h 05m2 stops
Multiple Airlines Logo
10:55 - 00:48
SNN
-
PDX
21h 53m2 stops
€505Multiple Airlines
Thu, 30 Apr - Thu, 14 May
United Airlines Logo
05:15 - 10:15
PDX
-
SNN
21h 00m2 stops
United Airlines Logo
12:30 - 21:16
SNN
-
PDX
16h 46m1 stop
€509United Airlines
Thu, 30 Apr - Thu, 14 May
American Airlines Logo
11:46 - 11:30
PDX
-
SNN
16h 44m2 stops
American Airlines Logo
07:50 - 16:55
SNN
-
PDX
16h 05m1 stop
€511American Airlines
Wed, 11 Mar - Wed, 18 Mar
American Airlines Logo
11:46 - 11:30
PDX
-
SNN
16h 44m2 stops
American Airlines Logo
07:50 - 22:08
SNN
-
PDX
21h 18m2 stops
€519American Airlines
Wed, 11 Mar - Wed, 18 Mar
American Airlines Logo
19:30 - 16:10
PDX
-
SNN
12h 40m1 stop
American Airlines Logo
07:40 - 17:40
SNN
-
PDX
18h 00m1 stop
€533American Airlines
Thu, 30 Apr - Thu, 14 May
United Airlines Logo
05:15 - 10:15
PDX
-
SNN
21h 00m2 stops
United Airlines Logo
09:30 - 15:05
SNN
-
PDX
13h 35m1 stop
€551United Airlines
Mon, 18 May - Tue, 26 May

British Airways flights from Portland to Shannon, Clare

Our best British Airways deals on Portland to Shannon, Clare flight tickets
British Airways
11 Mar
PDX14:47Portland
21h 38m
2 stops
SNN19:25Shannon
15 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€576
Find similar
British Airways
11 Mar
PDX18:45Portland
15h 00m
1 stop
SNN16:45Shannon
15 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€679
Find similar
British Airways
31 Jan
PDX10:33Portland
22h 12m
2 stops
SNN16:45Shannon
7 Feb
SNN17:25Shannon
30h 30m
1 stop
PDX15:55Portland
€764
Find similar

United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets
United Airlines
30 Apr
PDX05:15Portland
21h 00m
2 stops
SNN10:15Shannon
14 May
SNN12:30Shannon
16h 46m
1 stop
PDX21:16Portland
€509
Find similar
United Airlines
18 May
PDX05:15Portland
21h 00m
2 stops
SNN10:15Shannon
26 May
SNN09:30Shannon
13h 35m
1 stop
PDX15:05Portland
€551
Find similar
United Airlines
18 May
PDX05:15Portland
21h 00m
2 stops
SNN10:15Shannon
26 May
SNN12:30Shannon
27h 20m
2 stops
PDX07:50Portland
€556
Find similar

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 18 December 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

Sun 26/4

19:30-20:35

1 stop17h 05m

Shannon

Wed 6/5

07:40-17:40

1 stop18h 00m

€401

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

06:43-11:30

2 stops20h 47m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€404

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

06:43-11:30

2 stops20h 47m

Shannon

Wed 11/3

07:50-23:07

2 stops22h 17m

€413

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

14:14-11:15

2 stops37h 01m

Shannon

Thu 14/5

10:55-00:48

2 stops21h 53m

€483

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

15:15-11:20

2 stops36h 05m

Shannon

Thu 14/5

10:55-00:48

2 stops21h 53m

€505

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

05:15-10:15

2 stops21h 00m

Shannon

Thu 14/5

12:30-21:16

1 stop16h 46m

€509

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 11/3

11:46-11:30

2 stops16h 44m

Shannon

Wed 18/3

07:50-16:55

1 stop16h 05m

€511

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 11/3

11:46-11:30

2 stops16h 44m

Shannon

Wed 18/3

07:50-22:08

2 stops21h 18m

€519

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

19:30-16:10

1 stop12h 40m

Shannon

Thu 14/5

07:40-17:40

1 stop18h 00m

€533

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 18/5

05:15-10:15

2 stops21h 00m

Shannon

Tue 26/5

09:30-15:05

1 stop13h 35m

€551

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

Fastest flight time

19h 15m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 19h 15m
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 19h 15m.

  • 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

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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