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Cheap flights from Portland to Shannon from €238

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 29/7. 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.
United Airlines Logo
05:00 - 10:15
PDX
-
SNN
21h 15m
2 stops
United Airlines Logo
12:30 - 21:06
SNN
-
PDX
16h 36m
1 stop
€480United Airlines
Mon, 4 May - Tue, 12 May
United Airlines Logo
05:00 - 10:15
PDX
-
SNN
21h 15m
2 stops
United Airlines Logo
12:30 - 15:13
SNN
-
PDX
34h 43m
3 stops
€485United Airlines
Mon, 4 May - Tue, 12 May
United Airlines Logo
05:15 - 10:15
PDX
-
SNN
21h 00m
3 stops
United Airlines Logo
09:30 - 23:53
SNN
-
PDX
22h 23m
1 stop
€493United Airlines
Wed, 8 Jul - Wed, 22 Jul
United Airlines Logo
10:51 - 07:30
PDX
-
SNN
12h 39m
1 stop
United Airlines Logo
09:30 - 18:47
SNN
-
PDX
17h 17m
1 stop
€506United Airlines
Wed, 29 Jul - Wed, 12 Aug
United Airlines Logo
05:00 - 10:15
PDX
-
SNN
21h 15m
2 stops
United Airlines Logo
12:30 - 21:06
SNN
-
PDX
16h 36m
1 stop
€507United Airlines
Fri, 17 Apr - Thu, 14 May
United Airlines Logo
05:00 - 10:15
PDX
-
SNN
21h 15m
2 stops
United Airlines Logo
12:30 - 15:13
SNN
-
PDX
34h 43m
3 stops
€510United Airlines
Fri, 17 Apr - Thu, 14 May
United Airlines Logo
08:29 - 07:30
PDX
-
SNN
15h 01m
1 stop
United Airlines Logo
09:30 - 23:09
SNN
-
PDX
21h 39m
1 stop
€526United Airlines
Wed, 2 Sep - Sun, 6 Sep
United Airlines Logo
08:29 - 07:30
PDX
-
SNN
15h 01m
1 stop
United Airlines Logo
12:30 - 09:21
SNN
-
PDX
28h 51m
2 stops
€530United Airlines
Wed, 2 Sep - Sun, 6 Sep
United Airlines Logo
10:51 - 07:30
PDX
-
SNN
12h 39m
1 stop
United Airlines Logo
09:30 - 22:30
SNN
-
PDX
21h 00m
1 stop
€532United Airlines
Wed, 8 Jul - Wed, 22 Jul
Lufthansa Logo
13:55 - 10:15
PDX
-
SNN
36h 20m
2 stops
Lufthansa Logo
12:30 - 21:59
SNN
-
PDX
17h 29m
1 stop
€535Lufthansa
Tue, 7 Apr - Tue, 21 Apr

British Airways flights from Portland to Shannon, Clare

Our best British Airways deals on Portland to Shannon, Clare flight tickets
British Airways
17 Apr
PDX19:30Portland
31h 50m
1 stop
SNN11:20Shannon
14 May
SNN07:30Shannon
18h 10m
1 stop
PDX17:40Portland
€698
British Airways
4 May
PDX19:30Portland
12h 40m
1 stop
SNN16:10Shannon
12 May
SNN16:50Shannon
32h 50m
1 stop
PDX17:40Portland
€717
British Airways
30 Apr
PDX19:30Portland
12h 40m
1 stop
SNN16:10Shannon
14 May
SNN07:30Shannon
18h 10m
1 stop
PDX17:40Portland
€735

United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets
United Airlines
4 May
PDX05:00Portland
21h 15m
2 stops
SNN10:15Shannon
13 May
SNN12:30Shannon
16h 36m
1 stop
PDX21:06Portland
€480
United Airlines
4 May
PDX05:00Portland
21h 15m
2 stops
SNN10:15Shannon
13 May
SNN12:30Shannon
34h 43m
3 stops
PDX15:13Portland
€485
United Airlines
8 Jul
PDX05:15Portland
21h 00m
3 stops
SNN10:15Shannon
22 Jul
SNN09:30Shannon
22h 23m
1 stop
PDX23:53Portland
€493

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 7 March 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

Cheapest return flight

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 4/5

05:00-10:15

2 stops21h 15m

Shannon

Tue 12/5

12:30-21:06

1 stop16h 36m

€480

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 4/5

05:00-10:15

2 stops21h 15m

Shannon

Tue 12/5

12:30-15:13

3 stops34h 43m

€485

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/7

05:15-10:15

3 stops21h 00m

Shannon

Wed 22/7

09:30-23:53

1 stop22h 23m

€493
Fastest return journey

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 29/7

10:51-07:30

1 stop12h 39m

Shannon

Wed 12/8

09:30-18:47

1 stop17h 17m

€506

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 17/4

05:00-10:15

2 stops21h 15m

Shannon

Thu 14/5

12:30-21:06

1 stop16h 36m

€507

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 17/4

05:00-10:15

2 stops21h 15m

Shannon

Thu 14/5

12:30-15:13

3 stops34h 43m

€510

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 2/9

08:29-07:30

1 stop15h 01m

Shannon

Sun 6/9

09:30-23:09

1 stop21h 39m

€526

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 2/9

08:29-07:30

1 stop15h 01m

Shannon

Sun 6/9

12:30-09:21

2 stops28h 51m

€530

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/7

10:51-07:30

1 stop12h 39m

Shannon

Wed 22/7

09:30-22:30

1 stop21h 00m

€532

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 7/4

13:55-10:15

2 stops36h 20m

Shannon

Tue 21/4

12:30-21:59

1 stop17h 29m

€535

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

United 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

15h 42m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 15h 42m
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 42m.

  • 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
Tipperary
Killaloe
Nenagh
Adare
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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