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Cheap flights from Portland to Shannon from €193

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Shannon departing on 27/4. 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
17:45 - 16:45
PDX
-
SNN
15h 00m1 stop
American Airlines Logo
07:50 - 15:55
SNN
-
PDX
16h 05m1 stop
€400American Airlines
Mon, 12 Jan - Mon, 19 Jan
American Airlines Logo
13:52 - 16:45
PDX
-
SNN
18h 53m2 stops
American Airlines Logo
07:50 - 16:55
SNN
-
PDX
16h 05m1 stop
€405American Airlines
Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
17:45 - 16:45
PDX
-
SNN
15h 00m1 stop
American Airlines Logo
07:50 - 20:24
SNN
-
PDX
20h 34m2 stops
€409American Airlines
Wed, 14 Jan - Wed, 28 Jan
American Airlines Logo
13:52 - 16:45
PDX
-
SNN
18h 53m2 stops
American Airlines Logo
07:50 - 00:15
SNN
-
PDX
23h 25m2 stops
€413American Airlines
Thu, 5 Mar - Wed, 11 Mar
Lufthansa Logo
15:15 - 11:15
PDX
-
SNN
36h 00m2 stops
Lufthansa Logo
10:55 - 00:48
SNN
-
PDX
21h 53m2 stops
€432Lufthansa
Thu, 30 Apr - Thu, 14 May
United Airlines Logo
05:30 - 10:15
PDX
-
SNN
20h 45m2 stops
United Airlines Logo
12:30 - 21:16
SNN
-
PDX
16h 46m1 stop
€487United Airlines
Thu, 30 Apr - Thu, 14 May
American Airlines Logo
11:48 - 16:45
PDX
-
SNN
20h 57m2 stops
American Airlines Logo
07:50 - 16:55
SNN
-
PDX
16h 05m1 stop
€492American Airlines
Thu, 5 Mar - Wed, 11 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
€493American Airlines
Mon, 18 May - Tue, 26 May
American Airlines Logo
13:09 - 16:10
PDX
-
SNN
19h 01m2 stops
American Airlines Logo
07:40 - 17:40
SNN
-
PDX
18h 00m1 stop
€499American Airlines
Mon, 18 May - Tue, 26 May
American Airlines Logo
11:48 - 16:45
PDX
-
SNN
20h 57m2 stops
American Airlines Logo
07:50 - 21:52
SNN
-
PDX
21h 02m2 stops
€501American Airlines
Thu, 5 Mar - Wed, 11 Mar

American Airlines flights from Portland to Shannon, Clare

Our best American Airlines deals on Portland to Shannon, Clare flight tickets
American Airlines
12 Jan
PDX17:45Portland
15h 00m
1 stop
SNN16:45Shannon
19 Jan
SNN07:50Shannon
16h 05m
1 stop
PDX15:55Portland
€400
Find similar
American Airlines
12 Jan
PDX07:38Portland
19h 52m
2 stops
SNN11:30Shannon
19 Jan
SNN07:50Shannon
16h 05m
1 stop
PDX15:55Portland
€405
Find similar
American Airlines
14 Jan
PDX17:45Portland
15h 00m
1 stop
SNN16:45Shannon
28 Jan
SNN07:50Shannon
20h 34m
2 stops
PDX20:24Portland
€409
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
PDX05:30Portland
20h 45m
2 stops
SNN10:15Shannon
14 May
SNN12:30Shannon
16h 46m
1 stop
PDX21:16Portland
€487
Find similar
United Airlines
8 Jun
PDX07:11Portland
16h 19m
1 stop
SNN07:30Shannon
18 Jun
SNN09:30Shannon
20h 38m
1 stop
PDX22:08Portland
€561
Find similar
United Airlines
8 Jun
PDX15:30Portland
32h 00m
3 stops
SNN07:30Shannon
16 Jun
SNN12:30Shannon
18h 08m
2 stops
PDX22:38Portland
€565
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 1 January 2026.
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

Mon 12/1

17:45-16:45

1 stop15h 00m

Shannon

Mon 19/1

07:50-15:55

1 stop16h 05m

€400

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

13:52-16:45

2 stops18h 53m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€405

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 14/1

17:45-16:45

1 stop15h 00m

Shannon

Wed 28/1

07:50-20:24

2 stops20h 34m

€409

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

13:52-16:45

2 stops18h 53m

Shannon

Wed 11/3

07:50-00:15

2 stops23h 25m

€413

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

15:15-11:15

2 stops36h 00m

Shannon

Thu 14/5

10:55-00:48

2 stops21h 53m

€432

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

05:30-10:15

2 stops20h 45m

Shannon

Thu 14/5

12:30-21:16

1 stop16h 46m

€487

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

11:48-16:45

2 stops20h 57m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€492

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 18/5

19:30-16:10

1 stop12h 40m

Shannon

Tue 26/5

07:40-17:40

1 stop18h 00m

€493

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 18/5

13:09-16:10

2 stops19h 01m

Shannon

Tue 26/5

07:40-17:40

1 stop18h 00m

€499

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

11:48-16:45

2 stops20h 57m

Shannon

Wed 11/3

07:50-21:52

2 stops21h 02m

€501

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
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See travel insights to Shannon from

How to get the cheapest flight ticket from Portland to Shannon, Clare

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Portland to Shannon?

American Airlines is the most popular carrier operating from Portland to Shannon

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

20h 10m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 20h 10m
There are no direct flights from Portland to Shannon, Clare. There are no popular flight routes from Portland to Shannon, Clare.
Search flight deals

  • 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 20h 10m.

  • 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.

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.

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