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Cheap flights from Portland to Shannon from €484

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 30/3. 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.
United Airlines Logo
07:00 - 07:30
PDX
-
SNN
16h 30m
1 stop
United Airlines Logo
09:30 - 15:30
SNN
-
PDX
14h 00m
1 stop
€569United Airlines
Sat, 5 Sep - Sat, 19 Sep
United Airlines Logo
08:29 - 10:15
PDX
-
SNN
17h 46m
2 stops
United Airlines Logo
09:30 - 15:30
SNN
-
PDX
14h 00m
1 stop
€572United Airlines
Tue, 25 Aug - Tue, 8 Sep
United Airlines Logo
18:57 - 07:30
PDX
-
SNN
28h 33m
2 stops
United Airlines Logo
09:30 - 23:09
SNN
-
PDX
21h 39m
1 stop
€573United Airlines
Sat, 5 Sep - Sat, 19 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
€594Delta
Mon, 27 Jul - Tue, 11 Aug
KLM Logo
07:00 - 11:10
PDX
-
SNN
20h 10m
1 stop
KLM Logo
13:05 - 16:21
SNN
-
PDX
35h 16m
2 stops
€598KLM
Mon, 27 Jul - Tue, 11 Aug
United Airlines Logo
08:05 - 10:15
PDX
-
SNN
18h 10m
2 stops
United Airlines Logo
12:30 - 09:48
SNN
-
PDX
29h 18m
2 stops
€605United Airlines
Fri, 3 Apr - Thu, 16 Apr
United Airlines Logo
19:05 - 10:15
PDX
-
SNN
31h 10m
2 stops
United Airlines Logo
12:30 - 21:06
SNN
-
PDX
16h 36m
1 stop
€607United Airlines
Thu, 30 Apr - Thu, 14 May
United Airlines Logo
13:04 - 07:30
PDX
-
SNN
34h 26m
2 stops
United Airlines Logo
09:30 - 22:52
SNN
-
PDX
21h 22m
2 stops
€611United Airlines
Sat, 22 Aug - Wed, 26 Aug
United Airlines Logo
19:05 - 10:15
PDX
-
SNN
31h 10m
2 stops
United Airlines Logo
12:30 - 19:38
SNN
-
PDX
39h 08m
2 stops
€617United Airlines
Thu, 30 Apr - Thu, 14 May
United Airlines Logo
23:59 - 07:30
PDX
-
SNN
23h 31m
2 stops
United Airlines Logo
09:30 - 22:30
SNN
-
PDX
21h 00m
1 stop
€624United Airlines
Sun, 19 Jul - Tue, 28 Jul

Delta flights from Portland to Shannon, Clare

Our best Delta deals on Portland to Shannon, Clare flight tickets
Delta
27 Jul
PDX07:00Portland
20h 10m
1 stop
SNN11:10Shannon
11 Aug
SNN13:05Shannon
16h 30m
1 stop
PDX21:35Portland
€594
Delta
8 Jul
PDX22:35Portland
28h 35m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
16h 08m
1 stop
PDX21:13Portland
€677
Delta
8 Jul
PDX22:35Portland
28h 35m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
30h 31m
1 stop
PDX11:36Portland
€681

KLM flights from Portland to Shannon, Clare

Our best KLM deals on Portland to Shannon, Clare flight tickets
KLM
27 Jul
PDX07:00Portland
20h 10m
1 stop
SNN11:10Shannon
11 Aug
SNN13:05Shannon
35h 16m
2 stops
PDX16:21Portland
€598
KLM
8 Jul
PDX22:35Portland
28h 35m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
18h 36m
2 stops
PDX23:41Portland
€760
KLM
8 Jul
PDX22:35Portland
28h 35m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
35h 04m
2 stops
PDX16:09Portland
€766

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 24 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
Fastest return journey

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

07:00-07:30

1 stop16h 30m

Shannon

Sat 19/9

09:30-15:30

1 stop14h 00m

€569

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 25/8

08:29-10:15

2 stops17h 46m

Shannon

Tue 8/9

09:30-15:30

1 stop14h 00m

€572

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

18:57-07:30

2 stops28h 33m

Shannon

Sat 19/9

09:30-23:09

1 stop21h 39m

€573

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 27/7

07:00-11:10

1 stop20h 10m

Shannon

Tue 11/8

13:05-21:35

1 stop16h 30m

€594

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 27/7

07:00-11:10

1 stop20h 10m

Shannon

Tue 11/8

13:05-16:21

2 stops35h 16m

€598

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 3/4

08:05-10:15

2 stops18h 10m

Shannon

Thu 16/4

12:30-09:48

2 stops29h 18m

€605

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

19:05-10:15

2 stops31h 10m

Shannon

Thu 14/5

12:30-21:06

1 stop16h 36m

€607

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 22/8

13:04-07:30

2 stops34h 26m

Shannon

Wed 26/8

09:30-22:52

2 stops21h 22m

€611

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

19:05-10:15

2 stops31h 10m

Shannon

Thu 14/5

12:30-19:38

2 stops39h 08m

€617

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 19/7

23:59-07:30

2 stops23h 31m

Shannon

Tue 28/7

09:30-22:30

1 stop21h 00m

€624

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?

Air Canada 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 44m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 12h 44m
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 44m.

  • 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.

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