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Cheap flights from Portland to Shannon from €272

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 3/7. 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.
American Airlines Logo
11:48 - 16:45
PDX
-
SNN
20h 57m
2 stops
American Airlines Logo
07:50 - 15:55
SNN
-
PDX
16h 05m
1 stop
€400American Airlines
Wed, 25 Feb - Wed, 4 Mar
American Airlines Logo
12:04 - 16:45
PDX
-
SNN
20h 41m
2 stops
American Airlines Logo
07:50 - 00:17
SNN
-
PDX
24h 27m
2 stops
€408American Airlines
Thu, 19 Feb - Thu, 26 Feb
American Airlines Logo
17:45 - 16:45
PDX
-
SNN
15h 00m
1 stop
American Airlines Logo
07:50 - 15:55
SNN
-
PDX
16h 05m
1 stop
€440American Airlines
Wed, 25 Feb - Wed, 4 Mar
Delta Logo
07:00 - 11:10
PDX
-
SNN
20h 10m
1 stop
Delta Logo
13:05 - 21:35
SNN
-
PDX
16h 30m
1 stop
€460Delta
Wed, 8 Jul - Wed, 22 Jul
Delta Logo
07:00 - 11:10
PDX
-
SNN
20h 10m
1 stop
Delta Logo
13:05 - 09:25
SNN
-
PDX
28h 20m
2 stops
€464Delta
Wed, 8 Jul - Wed, 22 Jul
American Airlines Logo
06:40 - 11:30
PDX
-
SNN
20h 50m
2 stops
American Airlines Logo
07:50 - 16:55
SNN
-
PDX
16h 05m
1 stop
€490American Airlines
Thu, 5 Mar - Wed, 11 Mar
American Airlines Logo
06:40 - 11:30
PDX
-
SNN
20h 50m
2 stops
American Airlines Logo
07:50 - 21:52
SNN
-
PDX
21h 02m
2 stops
€498American Airlines
Thu, 5 Mar - Wed, 11 Mar
Delta Logo
07:00 - 11:10
PDX
-
SNN
20h 10m
1 stop
Delta Logo
13:05 - 21:35
SNN
-
PDX
16h 30m
1 stop
€501Delta
Wed, 8 Jul - Wed, 22 Jul
Delta Logo
07:00 - 11:10
PDX
-
SNN
20h 10m
1 stop
Delta Logo
13:05 - 11:43
SNN
-
PDX
30h 38m
1 stop
€506Delta
Wed, 8 Jul - Wed, 22 Jul
United Airlines Logo
05:30 - 10:15
PDX
-
SNN
20h 45m
2 stops
United Airlines Logo
12:30 - 21:06
SNN
-
PDX
16h 36m
1 stop
€522United Airlines
Thu, 30 Apr - Thu, 14 May

Delta flights from Portland to Shannon, Clare

Our best Delta deals on Portland to Shannon, Clare flight tickets
Delta
8 Jul
PDX07:00Portland
20h 10m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
16h 30m
1 stop
PDX21:35Portland
€460
Delta
8 Jul
PDX07:00Portland
20h 10m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
28h 20m
2 stops
PDX09:25Portland
€464
Delta
8 Jul
PDX07:00Portland
20h 10m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
16h 30m
1 stop
PDX21:35Portland
€501

Air Canada flights from Portland to Shannon, Clare

Our best Air Canada deals on Portland to Shannon, Clare flight tickets
Air Canada
4 Mar
PDX15:15Portland
17h 30m
2 stops
SNN16:45Shannon
8 Mar
SNN17:30Shannon
56h 00m
2 stops
PDX18:30Portland
€563
Air Canada
5 Mar
PDX15:15Portland
17h 30m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
21h 55m
3 stops
PDX22:45Portland
€578
Air Canada
5 Mar
PDX15:15Portland
17h 30m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
21h 55m
3 stops
PDX22:45Portland
€578

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 28 January 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

Wed 25/2

11:48-16:45

2 stops20h 57m

Shannon

Wed 4/3

07:50-15:55

1 stop16h 05m

€400

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 19/2

12:04-16:45

2 stops20h 41m

Shannon

Thu 26/2

07:50-00:17

2 stops24h 27m

€408

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 25/2

17:45-16:45

1 stop15h 00m

Shannon

Wed 4/3

07:50-15:55

1 stop16h 05m

€440

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/7

07:00-11:10

1 stop20h 10m

Shannon

Wed 22/7

13:05-21:35

1 stop16h 30m

€460

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/7

07:00-11:10

1 stop20h 10m

Shannon

Wed 22/7

13:05-09:25

2 stops28h 20m

€464

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

06:40-11:30

2 stops20h 50m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€490

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

06:40-11:30

2 stops20h 50m

Shannon

Wed 11/3

07:50-21:52

2 stops21h 02m

€498

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/7

07:00-11:10

1 stop20h 10m

Shannon

Wed 22/7

13:05-21:35

1 stop16h 30m

€501

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/7

07:00-11:10

1 stop20h 10m

Shannon

Wed 22/7

13:05-11:43

1 stop30h 38m

€506

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

05:30-10:15

2 stops20h 45m

Shannon

Thu 14/5

12:30-21:06

1 stop16h 36m

€522

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?

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

19h 33m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 19h 33m
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 19h 33m.

  • 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
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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