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Cheap flights from Portland to Shannon from €315

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 1/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.
British Airways Logo
11:48 - 16:45
PDX
-
SNN
20h 57m2 stops
British Airways Logo
07:50 - 16:55
SNN
-
PDX
16h 05m1 stop
€390British Airways
Thu, 5 Mar - Wed, 11 Mar
British Airways Logo
13:52 - 16:45
PDX
-
SNN
18h 53m2 stops
British Airways Logo
07:50 - 16:55
SNN
-
PDX
16h 05m1 stop
€399British Airways
Thu, 5 Mar - Wed, 11 Mar
British Airways Logo
12:04 - 16:45
PDX
-
SNN
20h 41m2 stops
British Airways Logo
07:50 - 22:02
SNN
-
PDX
21h 12m2 stops
€401British Airways
Thu, 5 Mar - Wed, 11 Mar
British Airways Logo
11:48 - 16:45
PDX
-
SNN
20h 57m2 stops
British Airways Logo
07:50 - 00:15
SNN
-
PDX
23h 25m2 stops
€404British Airways
Thu, 5 Mar - Wed, 11 Mar
British Airways Logo
17:45 - 16:45
PDX
-
SNN
15h 00m1 stop
British Airways Logo
20:05 - 16:55
SNN
-
PDX
27h 50m1 stop
€405British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
06:40 - 11:30
PDX
-
SNN
20h 50m2 stops
British Airways Logo
07:50 - 15:55
SNN
-
PDX
16h 05m1 stop
€410British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
05:40 - 11:30
PDX
-
SNN
45h 50m2 stops
British Airways Logo
07:50 - 16:55
SNN
-
PDX
16h 05m1 stop
€412British Airways
Thu, 5 Mar - Wed, 11 Mar
British Airways Logo
11:48 - 16:45
PDX
-
SNN
20h 57m2 stops
British Airways Logo
07:50 - 23:15
SNN
-
PDX
23h 25m2 stops
€418British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
05:40 - 19:25
PDX
-
SNN
29h 45m2 stops
British Airways Logo
07:50 - 00:15
SNN
-
PDX
23h 25m2 stops
€421British Airways
Thu, 5 Mar - Wed, 11 Mar
Delta Logo
07:00 - 11:10
PDX
-
SNN
20h 10m1 stop
Delta Logo
13:05 - 21:35
SNN
-
PDX
16h 30m1 stop
€427Delta
Wed, 8 Jul - Wed, 22 Jul

British Airways flights from Portland to Shannon, Clare

Our best British Airways deals on Portland to Shannon, Clare flight tickets
British Airways
5 Mar
PDX11:48Portland
20h 57m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€390
British Airways
5 Mar
PDX13:52Portland
18h 53m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€398
British Airways
5 Mar
PDX12:04Portland
20h 41m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
21h 12m
2 stops
PDX22:02Portland
€401

American Airlines flights from Portland to Shannon, Clare

Our best American Airlines deals on Portland to Shannon, Clare flight tickets
American Airlines
12 Jan
PDX06:00Portland
21h 30m
2 stops
SNN11:30Shannon
19 Jan
SNN07:50Shannon
16h 05m
1 stop
PDX15:55Portland
€408
American Airlines
12 Jan
PDX12:35Portland
20h 10m
2 stops
SNN16:45Shannon
19 Jan
SNN07:50Shannon
20h 34m
2 stops
PDX20:24Portland
€416
American Airlines
20 Apr
PDX19:30Portland
17h 05m
1 stop
SNN20:35Shannon
16 May
SNN13:45Shannon
17h 56m
2 stops
PDX23:41Portland
€465

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 9 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

Thu 5/3

11:48-16:45

2 stops20h 57m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€390

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

€398

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

12:04-16:45

2 stops20h 41m

Shannon

Wed 11/3

07:50-22:02

2 stops21h 12m

€401

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

11:48-16:45

2 stops20h 57m

Shannon

Wed 11/3

07:50-00:15

2 stops23h 25m

€404

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 4/3

17:45-16:45

1 stop15h 00m

Shannon

Sun 8/3

20:05-16:55

1 stop27h 50m

€405

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 4/3

06:40-11:30

2 stops20h 50m

Shannon

Sun 8/3

07:50-15:55

1 stop16h 05m

€410

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

05:40-11:30

2 stops45h 50m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€412

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 4/3

11:48-16:45

2 stops20h 57m

Shannon

Sun 8/3

07:50-23:15

2 stops23h 25m

€418

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

05:40-19:25

2 stops29h 45m

Shannon

Wed 11/3

07:50-00:15

2 stops23h 25m

€421

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/7

07:00-11:10

1 stop20h 10m

Shannon

Wed 22/7

13:05-21:35

1 stop16h 30m

€427

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 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?

British Airways 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

12h 40m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 12h 40m
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 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.

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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