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Cheap flights from Portland to Shannon from €298

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 12/10. 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
1 adult, Economy, 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
10:58 - 10:15
PDX
-
SNN
15h 17m
1 stop
United Airlines Logo
12:30 - 21:27
SNN
-
PDX
16h 57m
1 stop
€661United Airlines
Tue, 6 Oct - Thu, 15 Oct
United Airlines Logo
08:40 - 10:15
PDX
-
SNN
17h 35m
2 stops
United Airlines Logo
12:30 - 21:27
SNN
-
PDX
16h 57m
1 stop
€663United Airlines
Wed, 23 Sep - Wed, 30 Sep
United Airlines Logo
08:25 - 10:15
PDX
-
SNN
17h 50m
2 stops
United Airlines Logo
12:30 - 22:53
SNN
-
PDX
18h 23m
2 stops
€665United Airlines
Tue, 6 Oct - Thu, 15 Oct
United Airlines Logo
07:02 - 10:15
PDX
-
SNN
19h 13m
2 stops
United Airlines Logo
12:30 - 22:53
SNN
-
PDX
18h 23m
2 stops
€668United Airlines
Wed, 30 Sep - Thu, 15 Oct
Lufthansa Logo
10:58 - 10:15
PDX
-
SNN
15h 17m
1 stop
Lufthansa Logo
12:30 - 21:27
SNN
-
PDX
16h 57m
1 stop
€706Lufthansa
Wed, 30 Sep - Thu, 15 Oct
United Airlines Logo
10:56 - 10:15
PDX
-
SNN
15h 19m
1 stop
United Airlines Logo
09:30 - 19:18
SNN
-
PDX
17h 48m
1 stop
€746United Airlines
Thu, 3 Sep - Thu, 10 Sep
United Airlines Logo
23:02 - 10:15
PDX
-
SNN
27h 13m
2 stops
United Airlines Logo
09:30 - 15:56
SNN
-
PDX
14h 26m
1 stop
€749United Airlines
Sat, 5 Sep - Sat, 19 Sep
United Airlines Logo
23:02 - 10:15
PDX
-
SNN
27h 13m
2 stops
United Airlines Logo
09:30 - 17:49
SNN
-
PDX
16h 19m
2 stops
€750United Airlines
Sat, 5 Sep - Sat, 19 Sep
Multiple Airlines Logo
22:35 - 11:10
PDX
-
SNN
28h 35m
1 stop
Multiple Airlines Logo
13:05 - 21:02
SNN
-
PDX
15h 57m
1 stop
€760Multiple Airlines
Sat, 5 Sep - Sat, 19 Sep
Delta Logo
22:35 - 11:10
PDX
-
SNN
28h 35m
1 stop
Delta Logo
13:05 - 11:35
SNN
-
PDX
30h 30m
1 stop
€770Delta
Sat, 5 Sep - Sat, 19 Sep

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United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets
United Airlines
6 Oct
PDX10:58Portland
15h 17m
1 stop
SNN10:15Shannon
15 Oct
SNN12:30Shannon
16h 57m
1 stop
PDX21:27Portland
€661
United Airlines
23 Sept
PDX08:40Portland
17h 35m
2 stops
SNN10:15Shannon
30 Sept
SNN12:30Shannon
16h 57m
1 stop
PDX21:27Portland
€663
United Airlines
6 Oct
PDX08:25Portland
17h 50m
2 stops
SNN10:15Shannon
15 Oct
SNN12:30Shannon
18h 23m
2 stops
PDX22:53Portland
€665

Lufthansa flights from Portland to Shannon, Clare

Our best Lufthansa deals on Portland to Shannon, Clare flight tickets
Lufthansa
30 Sept
PDX10:58Portland
15h 17m
1 stop
SNN10:15Shannon
15 Oct
SNN12:30Shannon
16h 57m
1 stop
PDX21:27Portland
€706
Lufthansa
24 Jun
PDX07:00Portland
16h 30m
1 stop
SNN07:30Shannon
5 Jul
SNN09:30Shannon
14h 27m
1 stop
PDX15:57Portland
€1,119
Lufthansa
24 Jun
PDX07:00Portland
16h 30m
2 stops
SNN07:30Shannon
5 Jul
SNN12:30Shannon
17h 18m
1 stop
PDX21:48Portland
€1,123

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 21 June 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

Tue 6/10

10:58-10:15

1 stop15h 17m

Shannon

Thu 15/10

12:30-21:27

1 stop16h 57m

€661

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 23/9

08:40-10:15

2 stops17h 35m

Shannon

Wed 30/9

12:30-21:27

1 stop16h 57m

€663

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 6/10

08:25-10:15

2 stops17h 50m

Shannon

Thu 15/10

12:30-22:53

2 stops18h 23m

€665

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 30/9

07:02-10:15

2 stops19h 13m

Shannon

Thu 15/10

12:30-22:53

2 stops18h 23m

€668

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 30/9

10:58-10:15

1 stop15h 17m

Shannon

Thu 15/10

12:30-21:27

1 stop16h 57m

€706

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 3/9

10:56-10:15

1 stop15h 19m

Shannon

Thu 10/9

09:30-19:18

1 stop17h 48m

€746

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

23:02-10:15

2 stops27h 13m

Shannon

Sat 19/9

09:30-15:56

1 stop14h 26m

€749

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

23:02-10:15

2 stops27h 13m

Shannon

Sat 19/9

09:30-17:49

2 stops16h 19m

€750

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

22:35-11:10

1 stop28h 35m

Shannon

Sat 19/9

13:05-21:02

1 stop15h 57m

€760

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

22:35-11:10

1 stop28h 35m

Shannon

Sat 19/9

13:05-11:35

1 stop30h 30m

€770

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 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?

United Airlines and Air France 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 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

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 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
Nenagh
Killaloe
Lahinch
Adare
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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