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Cheap flights from Portland to Shannon from €341

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 11/10. 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
10:56 - 10:15
PDX
-
SNN
15h 19m
1 stop
United Airlines Logo
09:30 - 15:30
SNN
-
PDX
14h 00m
1 stop
€640United Airlines
Sun, 6 Sep - Thu, 10 Sep
United Airlines Logo
07:00 - 07:30
PDX
-
SNN
16h 30m
1 stop
United Airlines Logo
09:30 - 18:47
SNN
-
PDX
17h 17m
1 stop
€641United Airlines
Sun, 6 Sep - Thu, 10 Sep
United Airlines Logo
05:00 - 07:30
PDX
-
SNN
18h 30m
2 stops
United Airlines Logo
09:30 - 20:50
SNN
-
PDX
19h 20m
2 stops
€645United Airlines
Sun, 6 Sep - Thu, 10 Sep
Delta Logo
07:00 - 11:10
PDX
-
SNN
20h 10m
1 stop
Delta Logo
13:05 - 21:35
SNN
-
PDX
16h 30m
1 stop
€683Delta
Sun, 6 Sep - Sat, 12 Sep
United Airlines Logo
16:07 - 07:30
PDX
-
SNN
31h 23m
2 stops
United Airlines Logo
09:30 - 18:47
SNN
-
PDX
17h 17m
1 stop
€687United Airlines
Sat, 5 Sep - Sat, 19 Sep
Delta Logo
22:05 - 11:10
PDX
-
SNN
29h 05m
1 stop
Delta Logo
13:05 - 21:35
SNN
-
PDX
16h 30m
1 stop
€688Delta
Sat, 5 Sep - Sat, 19 Sep
United Airlines Logo
22:59 - 10:15
PDX
-
SNN
27h 16m
2 stops
United Airlines Logo
12:30 - 00:02
SNN
-
PDX
19h 32m
2 stops
€694United Airlines
Fri, 9 Oct - Wed, 21 Oct
United Airlines Logo
10:45 - 07:30
PDX
-
SNN
12h 45m
1 stop
United Airlines Logo
09:30 - 23:09
SNN
-
PDX
21h 39m
1 stop
€697United Airlines
Wed, 26 Aug - Sat, 5 Sep
United Airlines Logo
05:00 - 07:30
PDX
-
SNN
18h 30m
2 stops
United Airlines Logo
09:30 - 17:43
SNN
-
PDX
16h 13m
2 stops
€701United Airlines
Wed, 26 Aug - Sat, 5 Sep
United Airlines Logo
10:51 - 07:30
PDX
-
SNN
12h 39m
1 stop
United Airlines Logo
12:30 - 22:30
SNN
-
PDX
18h 00m
2 stops
€712United Airlines
Sun, 24 May - Tue, 9 Jun

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British Airways flights from Portland to Shannon, Clare

Our best British Airways deals on Portland to Shannon, Clare flight tickets
British Airways
16 Oct
PDX19:30Portland
31h 50m
1 stop
SNN11:20Shannon
28 Oct
SNN20:05Shannon
33h 39m
2 stops
PDX22:44Portland
€864
British Airways
16 Oct
PDX19:30Portland
31h 50m
1 stop
SNN11:20Shannon
28 Oct
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€907
British Airways
20 May
PDX19:30Portland
17h 05m
1 stop
SNN20:35Shannon
27 May
SNN21:15Shannon
28h 25m
1 stop
PDX17:40Portland
€1,006

Air Canada flights from Portland to Shannon, Clare

Our best Air Canada deals on Portland to Shannon, Clare flight tickets
Air Canada
2 Jun
PDX15:30Portland
21h 05m
2 stops
SNN20:35Shannon
9 Jun
SNN07:30Shannon
19h 40m
3 stops
PDX19:10Portland
€956
Air Canada
4 Jun
PDX10:10Portland
26h 25m
2 stops
SNN20:35Shannon
11 Jun
SNN07:30Shannon
19h 40m
3 stops
PDX19:10Portland
€1,015
Air Canada
30 Apr
PDX09:50Portland
26h 45m
2 stops
SNN20:35Shannon
14 May
SNN07:30Shannon
19h 40m
3 stops
PDX19:10Portland
€1,667

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 22 April 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
Fastest return journey

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 6/9

10:56-10:15

1 stop15h 19m

Shannon

Thu 10/9

09:30-15:30

1 stop14h 00m

€640

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 6/9

07:00-07:30

1 stop16h 30m

Shannon

Thu 10/9

09:30-18:47

1 stop17h 17m

€641

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 6/9

05:00-07:30

2 stops18h 30m

Shannon

Thu 10/9

09:30-20:50

2 stops19h 20m

€645

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 6/9

07:00-11:10

1 stop20h 10m

Shannon

Sat 12/9

13:05-21:35

1 stop16h 30m

€683

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

16:07-07:30

2 stops31h 23m

Shannon

Sat 19/9

09:30-18:47

1 stop17h 17m

€687

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

22:05-11:10

1 stop29h 05m

Shannon

Sat 19/9

13:05-21:35

1 stop16h 30m

€688

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 9/10

22:59-10:15

2 stops27h 16m

Shannon

Wed 21/10

12:30-00:02

2 stops19h 32m

€694

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 26/8

10:45-07:30

1 stop12h 45m

Shannon

Sat 5/9

09:30-23:09

1 stop21h 39m

€697

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 26/8

05:00-07:30

2 stops18h 30m

Shannon

Sat 5/9

09:30-17:43

2 stops16h 13m

€701

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 24/5

10:51-07:30

1 stop12h 39m

Shannon

Tue 9/6

12:30-22:30

2 stops18h 00m

€712

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 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?

Lufthansa 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

12h 45m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 12h 45m
There are no direct flights from Portland to Shannon, Clare. There are no popular flight routes from Portland to Shannon, Clare.
Search flight deals

Frequently asked questions about flying from Portland to Shannon, Clare

  • 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 45m.

  • 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
Bunratty
Lahinch

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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