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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 26/10. 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

American Airlines Logo
19:25 - 16:10PDX-SNN
12h 45m1 stop
American Airlines Logo
07:50 - 15:55SNN-PDX
16h 05m1 stop
€414American Airlines
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Sun, 19 Oct - Mon, 3 Nov
American Airlines Logo
15:43 - 16:45PDX-SNN
17h 02m2 stops
American Airlines Logo
07:50 - 16:55SNN-PDX
16h 05m1 stop
€417American Airlines
Find Deal
Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
15:19 - 16:10PDX-SNN
16h 51m2 stops
American Airlines Logo
07:50 - 15:55SNN-PDX
16h 05m1 stop
€418American Airlines
Find Deal
Sun, 19 Oct - Mon, 3 Nov
American Airlines Logo
14:10 - 16:45PDX-SNN
18h 35m2 stops
American Airlines Logo
07:50 - 20:24SNN-PDX
19h 34m2 stops
€425American Airlines
Find Deal
Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
06:00 - 11:30PDX-SNN
21h 30m2 stops
American Airlines Logo
07:50 - 20:24SNN-PDX
19h 34m2 stops
€426American Airlines
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Thu, 5 Mar - Wed, 11 Mar
Air Canada Logo
15:15 - 15:45PDX-SNN
16h 30m2 stops
Air Canada Logo
07:50 - 14:45SNN-PDX
38h 55m2 stops
€584Air Canada
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Fri, 14 Nov - Tue, 18 Nov
British Airways Logo
17:45 - 15:45PDX-SNN
14h 00m1 stop
British Airways Logo
20:05 - 15:55SNN-PDX
27h 50m1 stop
€585British Airways
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Fri, 14 Nov - Tue, 18 Nov
Air Canada Logo
15:15 - 16:45PDX-SNN
17h 30m2 stops
Air Canada Logo
07:50 - 09:15SNN-PDX
32h 25m3 stops
€589Air Canada
Find Deal
Thu, 5 Mar - Wed, 11 Mar
Logo
07:11 - 11:30PDX-SNN
20h 19m3 stops
Logo
07:50 - 18:30SNN-PDX
41h 40m2 stops
€593
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Thu, 5 Mar - Wed, 11 Mar
Logo
09:55 - 20:35PDX-SNN
26h 40m2 stops
Logo
07:50 - 22:33SNN-PDX
22h 43m3 stops
€596
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Sun, 19 Oct - Mon, 3 Nov

American Airlines flights from Portland to Shannon, Clare

Our best American Airlines deals on Portland to Shannon, Clare flight tickets
American Airlines
19 Oct
PDX19:25Portland
12h 45m
1 stop
SNN16:10Shannon
3 Nov
SNN07:50Shannon
16h 05m
1 stop
PDX15:55Portland
€414
Find similar
American Airlines
5 Mar
PDX15:43Portland
17h 02m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€417
Find similar
American Airlines
19 Oct
PDX15:19Portland
16h 51m
2 stops
SNN16:10Shannon
3 Nov
SNN07:50Shannon
16h 05m
1 stop
PDX15:55Portland
€418
Find similar

Air Canada flights from Portland to Shannon, Clare

Our best Air Canada deals on Portland to Shannon, Clare flight tickets
Air Canada
14 Nov
PDX15:15Portland
16h 30m
2 stops
SNN15:45Shannon
18 Nov
SNN07:50Shannon
38h 55m
2 stops
PDX14:45Portland
€584
Find similar
Air Canada
5 Mar
PDX15:15Portland
17h 30m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
32h 25m
3 stops
PDX09:15Portland
€589
Find similar
Air Canada
5 Mar
PDX07:11Portland
20h 19m
3 stops
SNN11:30Shannon
11 Mar
SNN07:50Shannon
32h 25m
3 stops
PDX09:15Portland
€599
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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 15 September 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

Sun 19/10

19:25-16:10

1 stop12h 45m

Shannon

Mon 3/11

07:50-15:55

1 stop16h 05m

€414

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

15:43-16:45

2 stops17h 02m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€417

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 19/10

15:19-16:10

2 stops16h 51m

Shannon

Mon 3/11

07:50-15:55

1 stop16h 05m

€418

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

14:10-16:45

2 stops18h 35m

Shannon

Wed 11/3

07:50-20:24

2 stops19h 34m

€425

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

06:00-11:30

2 stops21h 30m

Shannon

Wed 11/3

07:50-20:24

2 stops19h 34m

€426

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 14/11

15:15-15:45

2 stops16h 30m

Shannon

Tue 18/11

07:50-14:45

2 stops38h 55m

€584

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 14/11

17:45-15:45

1 stop14h 00m

Shannon

Tue 18/11

20:05-15:55

1 stop27h 50m

€585

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

€589

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

07:11-11:30

3 stops20h 19m

Shannon

Wed 11/3

07:50-18:30

2 stops41h 40m

€593

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 19/10

09:55-20:35

2 stops26h 40m

Shannon

Mon 3/11

07:50-22:33

3 stops22h 43m

€596

Flights are sorted by cheapest return flights first.

Showing 1-10 of 14 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 Air Canada 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 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
Nenagh
Tipperary
Killaloe
Adare
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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