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Cheap flights from Portland to Shannon from €204

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 28/7. 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
23:15 - 10:15
PDX
-
SNN
27h 00m
1 stop
United Airlines Logo
12:30 - 21:59
SNN
-
PDX
17h 29m
1 stop
€406United Airlines
Mon, 6 Apr - Mon, 20 Apr
Delta Logo
07:00 - 11:10
PDX
-
SNN
20h 10m
1 stop
Delta Logo
13:05 - 21:35
SNN
-
PDX
16h 30m
1 stop
€414Delta
Mon, 17 Aug - Wed, 26 Aug
United Airlines Logo
23:59 - 10:15
PDX
-
SNN
26h 16m
2 stops
United Airlines Logo
09:30 - 20:49
SNN
-
PDX
19h 19m
2 stops
€417United Airlines
Sat, 15 Aug - Sat, 29 Aug
KLM Logo
22:05 - 11:10
PDX
-
SNN
29h 05m
1 stop
KLM Logo
13:05 - 21:35
SNN
-
PDX
16h 30m
1 stop
€418KLM
Sat, 15 Aug - Fri, 28 Aug
Delta Logo
21:45 - 11:10
PDX
-
SNN
29h 25m
2 stops
Delta Logo
13:05 - 23:41
SNN
-
PDX
42h 36m
2 stops
€422Delta
Sun, 16 Aug - Mon, 31 Aug
Delta Logo
22:05 - 11:10
PDX
-
SNN
29h 05m
1 stop
Delta Logo
13:05 - 15:06
SNN
-
PDX
34h 01m
2 stops
€430Delta
Wed, 12 Aug - Sun, 30 Aug
Lufthansa Logo
23:15 - 10:15
PDX
-
SNN
27h 00m
1 stop
Lufthansa Logo
12:30 - 21:59
SNN
-
PDX
17h 29m
1 stop
€459Lufthansa
Tue, 7 Apr - Tue, 14 Apr
United Airlines Logo
22:55 - 10:15
PDX
-
SNN
27h 20m
2 stops
United Airlines Logo
12:30 - 22:54
SNN
-
PDX
18h 24m
2 stops
€462United Airlines
Mon, 13 Apr - Wed, 13 May
Lufthansa Logo
23:15 - 10:15
PDX
-
SNN
27h 00m
1 stop
Lufthansa Logo
12:30 - 00:44
SNN
-
PDX
20h 14m
2 stops
€463Lufthansa
Tue, 7 Apr - Tue, 14 Apr
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
€464United Airlines
Wed, 8 Jul - Wed, 22 Jul

Delta flights from Portland to Shannon, Clare

Our best Delta deals on Portland to Shannon, Clare flight tickets
Delta
17 Aug
PDX07:00Portland
20h 10m
1 stop
SNN11:10Shannon
26 Aug
SNN13:05Shannon
16h 30m
1 stop
PDX21:35Portland
€414
Delta
15 Aug
PDX22:05Portland
29h 05m
1 stop
SNN11:10Shannon
27 Aug
SNN13:05Shannon
16h 30m
1 stop
PDX21:35Portland
€418
Delta
16 Aug
PDX21:45Portland
29h 25m
2 stops
SNN11:10Shannon
31 Aug
SNN13:05Shannon
42h 36m
2 stops
PDX23:41Portland
€422

United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets
United Airlines
6 Apr
PDX23:59Portland
26h 16m
2 stops
SNN10:15Shannon
20 Apr
SNN12:30Shannon
17h 29m
1 stop
PDX21:59Portland
€406
United Airlines
15 Aug
PDX05:15Portland
18h 15m
2 stops
SNN07:30Shannon
26 Aug
SNN09:30Shannon
19h 15m
2 stops
PDX20:45Portland
€417
United Airlines
13 Apr
PDX22:55Portland
27h 20m
2 stops
SNN10:15Shannon
13 May
SNN12:30Shannon
18h 24m
2 stops
PDX22:54Portland
€462

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 18 February 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 6/4

23:15-10:15

1 stop27h 00m

Shannon

Mon 20/4

12:30-21:59

1 stop17h 29m

€406

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 17/8

07:00-11:10

1 stop20h 10m

Shannon

Wed 26/8

13:05-21:35

1 stop16h 30m

€414

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 15/8

23:59-10:15

2 stops26h 16m

Shannon

Sat 29/8

09:30-20:49

2 stops19h 19m

€417

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 15/8

22:05-11:10

1 stop29h 05m

Shannon

Fri 28/8

13:05-21:35

1 stop16h 30m

€418

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 16/8

21:45-11:10

2 stops29h 25m

Shannon

Mon 31/8

13:05-23:41

2 stops42h 36m

€422

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 12/8

22:05-11:10

1 stop29h 05m

Shannon

Sun 30/8

13:05-15:06

2 stops34h 01m

€430

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 7/4

23:15-10:15

1 stop27h 00m

Shannon

Tue 14/4

12:30-21:59

1 stop17h 29m

€459

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 13/4

22:55-10:15

2 stops27h 20m

Shannon

Wed 13/5

12:30-22:54

2 stops18h 24m

€462

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 7/4

23:15-10:15

1 stop27h 00m

Shannon

Tue 14/4

12:30-00:44

2 stops20h 14m

€463

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/7

10:51-07:30

1 stop12h 39m

Shannon

Wed 22/7

09:30-18:47

1 stop17h 17m

€464

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

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

12h 39m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 12h 39m
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 39m.

  • 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
Nenagh
Killaloe
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.

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