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Cheap flights from Portland to Shannon from €180

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 24/5. 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
11:46 - 16:45
PDX
-
SNN
21h 59m
2 stops
British Airways Logo
21:15 - 23:09
SNN
-
PDX
33h 54m
2 stops
€375British Airways
Tue, 17 Mar - Mon, 30 Mar
British Airways Logo
06:40 - 19:25
PDX
-
SNN
29h 45m
2 stops
British Airways Logo
21:15 - 23:09
SNN
-
PDX
33h 54m
2 stops
€376British Airways
Tue, 17 Mar - Mon, 30 Mar
British Airways Logo
05:40 - 16:45
PDX
-
SNN
27h 05m
2 stops
British Airways Logo
07:50 - 16:55
SNN
-
PDX
16h 05m
1 stop
€396British Airways
Thu, 5 Mar - Wed, 11 Mar
British Airways Logo
07:00 - 15:50
PDX
-
SNN
24h 50m
2 stops
British Airways Logo
07:40 - 22:32
SNN
-
PDX
22h 52m
2 stops
€401British Airways
Fri, 1 May - Tue, 12 May
British Airways Logo
17:45 - 16:45
PDX
-
SNN
15h 00m
1 stop
British Airways Logo
07:50 - 15:55
SNN
-
PDX
16h 05m
1 stop
€406British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
11:48 - 16:45
PDX
-
SNN
20h 57m
2 stops
British Airways Logo
07:50 - 15:55
SNN
-
PDX
16h 05m
1 stop
€409British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
05:40 - 16:45
PDX
-
SNN
27h 05m
2 stops
British Airways Logo
07:50 - 23:09
SNN
-
PDX
22h 19m
2 stops
€411British Airways
Thu, 5 Mar - Wed, 11 Mar
British Airways Logo
05:40 - 11:30
PDX
-
SNN
21h 50m
2 stops
British Airways Logo
07:50 - 23:15
SNN
-
PDX
23h 25m
2 stops
€418British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
06:40 - 11:30
PDX
-
SNN
20h 50m
2 stops
British Airways Logo
07:50 - 23:15
SNN
-
PDX
23h 25m
2 stops
€419British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
05:40 - 11:30
PDX
-
SNN
22h 50m
2 stops
British Airways Logo
21:15 - 23:09
SNN
-
PDX
33h 54m
2 stops
€420British Airways
Tue, 17 Mar - Sun, 29 Mar

British Airways flights from Portland to Shannon, Clare

Our best British Airways deals on Portland to Shannon, Clare flight tickets
British Airways
17 Mar
PDX11:46Portland
21h 59m
2 stops
SNN16:45Shannon
30 Mar
SNN21:15Shannon
33h 54m
2 stops
PDX23:09Portland
€375
British Airways
17 Mar
PDX06:40Portland
29h 45m
2 stops
SNN19:25Shannon
30 Mar
SNN21:15Shannon
33h 54m
2 stops
PDX23:09Portland
€376
British Airways
5 Mar
PDX05:40Portland
27h 05m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€396

American Airlines flights from Portland to Shannon, Clare

Our best American Airlines deals on Portland to Shannon, Clare flight tickets
American Airlines
5 Mar
PDX23:35Portland
22h 20m
2 stops
SNN05:55Shannon
11 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€441
American Airlines
5 Mar
PDX23:35Portland
22h 20m
2 stops
SNN05:55Shannon
11 Mar
SNN07:50Shannon
23h 25m
2 stops
PDX00:15Portland
€450
American Airlines
27 Feb
PDX11:52Portland
19h 53m
2 stops
SNN15:45Shannon
6 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX15:55Portland
€492

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 14 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

Tue 17/3

11:46-16:45

2 stops21h 59m

Shannon

Mon 30/3

21:15-23:09

2 stops33h 54m

€375

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 17/3

06:40-19:25

2 stops29h 45m

Shannon

Mon 30/3

21:15-23:09

2 stops33h 54m

€376

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

05:40-16:45

2 stops27h 05m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€396

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 1/5

07:00-15:50

2 stops24h 50m

Shannon

Tue 12/5

07:40-22:32

2 stops22h 52m

€401

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 4/3

17:45-16:45

1 stop15h 00m

Shannon

Sun 8/3

07:50-15:55

1 stop16h 05m

€406

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 4/3

11:48-16:45

2 stops20h 57m

Shannon

Sun 8/3

07:50-15:55

1 stop16h 05m

€409

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

05:40-16:45

2 stops27h 05m

Shannon

Wed 11/3

07:50-23:09

2 stops22h 19m

€411

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 4/3

05:40-11:30

2 stops21h 50m

Shannon

Sun 8/3

07:50-23:15

2 stops23h 25m

€418

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 4/3

06:40-11:30

2 stops20h 50m

Shannon

Sun 8/3

07:50-23:15

2 stops23h 25m

€419

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 17/3

05:40-11:30

2 stops22h 50m

Shannon

Sun 29/3

21:15-23:09

2 stops33h 54m

€420

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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?

Delta, KLM, and United Airlines are the most popular carriers 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

15h 00m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 15h 00m
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 15h 00m.

  • 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.

An easier way to manage your Shannon, Clare trip

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