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Cheap flights from Portland to Shannon from €325

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 23/3. 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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Cheap return flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:46 - 16:45PDX-SNN
20h 59m2 stops
American Airlines Logo
07:50 - 16:55SNN-PDX
16h 05m1 stop
€411American Airlines
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Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
11:46 - 16:45PDX-SNN
20h 59m2 stops
American Airlines Logo
07:50 - 16:55SNN-PDX
16h 05m1 stop
€412American Airlines
Find Deal
Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
17:45 - 16:45PDX-SNN
15h 00m1 stop
American Airlines Logo
07:50 - 20:27SNN-PDX
20h 37m2 stops
€416American Airlines
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Wed, 14 Jan - Mon, 26 Jan
United Airlines Logo
07:30 - 10:15PDX-SNN
18h 45m2 stops
United Airlines Logo
12:30 - 19:31SNN-PDX
15h 01m1 stop
€426United Airlines
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Thu, 30 Apr - Thu, 14 May
Lufthansa Logo
15:15 - 11:15PDX-SNN
36h 00m2 stops
Lufthansa Logo
10:55 - 00:54SNN-PDX
45h 59m2 stops
€469Lufthansa
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Thu, 30 Apr - Thu, 14 May
United Airlines Logo
05:15 - 10:15PDX-SNN
21h 00m2 stops
United Airlines Logo
12:30 - 19:31SNN-PDX
15h 01m1 stop
€491United Airlines
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Thu, 30 Apr - Thu, 14 May
British Airways Logo
11:46 - 11:30PDX-SNN
15h 44m2 stops
British Airways Logo
20:05 - 15:55SNN-PDX
27h 50m1 stop
€576British Airways
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Tue, 17 Feb - Tue, 3 Mar
Air Canada Logo
09:50 - 16:45PDX-SNN
22h 55m2 stops
Air Canada Logo
20:05 - 09:15SNN-PDX
45h 10m2 stops
€581Air Canada
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Wed, 12 Nov - Sun, 16 Nov
British Airways Logo
17:45 - 16:45PDX-SNN
15h 00m1 stop
British Airways Logo
20:05 - 15:55SNN-PDX
27h 50m1 stop
€582British Airways
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Wed, 12 Nov - Sun, 16 Nov
Air Canada Logo
15:15 - 16:45PDX-SNN
17h 30m2 stops
Air Canada Logo
07:50 - 09:15SNN-PDX
32h 25m3 stops
€586Air Canada
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Thu, 5 Mar - Wed, 11 Mar

American Airlines flights from Portland to Shannon, Clare

Our best American Airlines deals on Portland to Shannon, Clare flight tickets
American Airlines
5 Mar
PDX11:46Portland
20h 59m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€411
Find similar
American Airlines
5 Mar
PDX11:46Portland
20h 59m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€412
Find similar
American Airlines
14 Jan
PDX17:45Portland
15h 00m
1 stop
SNN16:45Shannon
26 Jan
SNN07:50Shannon
20h 37m
2 stops
PDX20:27Portland
€416
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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
30 Apr
PDX07:30Portland
18h 45m
2 stops
SNN10:15Shannon
14 May
SNN12:30Shannon
20h 24m
2 stops
PDX00:54Portland
€426
Find similar
United Airlines
30 Apr
PDX05:15Portland
21h 00m
2 stops
SNN10:15Shannon
14 May
SNN12:30Shannon
15h 01m
1 stop
PDX19:31Portland
€491
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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 2 November 2025.
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

Thu 5/3

11:46-16:45

2 stops20h 59m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€411

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

11:46-16:45

2 stops20h 59m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€412

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 14/1

17:45-16:45

1 stop15h 00m

Shannon

Mon 26/1

07:50-20:27

2 stops20h 37m

€416

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

07:30-10:15

2 stops18h 45m

Shannon

Thu 14/5

12:30-19:31

1 stop15h 01m

€426

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

15:15-11:15

2 stops36h 00m

Shannon

Thu 14/5

10:55-00:54

2 stops45h 59m

€469

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

05:15-10:15

2 stops21h 00m

Shannon

Thu 14/5

12:30-19:31

1 stop15h 01m

€491

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 17/2

11:46-11:30

2 stops15h 44m

Shannon

Tue 3/3

20:05-15:55

1 stop27h 50m

€576

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 12/11

09:50-16:45

2 stops22h 55m

Shannon

Sun 16/11

20:05-09:15

2 stops45h 10m

€581

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 12/11

17:45-16:45

1 stop15h 00m

Shannon

Sun 16/11

20:05-15:55

1 stop27h 50m

€582

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

15:15-16:45

2 stops17h 30m

Shannon

Wed 11/3

07:50-09:15

3 stops32h 25m

€586

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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?

American Airlines and British Airways 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

Direct flights

None
There are no direct flights from Portland to Shannon, Clare. There are no popular flight routes from Portland to Shannon, Clare.
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  • 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 40m.

  • 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
Nenagh
Tipperary
Adare
Killaloe
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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