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Cheap flights from Portland to Shannon from €274

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.
United Airlines Logo
22:55 - 10:15
PDX
-
SNN
27h 20m
2 stops
United Airlines Logo
12:30 - 22:54
SNN
-
PDX
18h 24m
2 stops
€417United Airlines
Fri, 3 Apr - Wed, 15 Apr
Lufthansa Logo
23:15 - 10:15
PDX
-
SNN
27h 00m
1 stop
Lufthansa Logo
12:30 - 21:59
SNN
-
PDX
17h 29m
1 stop
€459Lufthansa
Wed, 8 Apr - Tue, 14 Apr
Lufthansa Logo
23:15 - 10:15
PDX
-
SNN
27h 00m
1 stop
Lufthansa Logo
12:30 - 00:44
SNN
-
PDX
20h 14m
2 stops
€464Lufthansa
Wed, 8 Apr - Tue, 14 Apr
United Airlines Logo
08:05 - 10:15
PDX
-
SNN
18h 10m
2 stops
United Airlines Logo
12:30 - 00:44
SNN
-
PDX
20h 14m
2 stops
€502United Airlines
Wed, 8 Apr - Tue, 14 Apr
United Airlines Logo
05:00 - 10:15
PDX
-
SNN
21h 15m
2 stops
United Airlines Logo
12:30 - 21:06
SNN
-
PDX
16h 36m
1 stop
€527United Airlines
Thu, 30 Apr - Thu, 14 May
British Airways Logo
15:52 - 16:45
PDX
-
SNN
16h 53m
2 stops
British Airways Logo
07:50 - 16:55
SNN
-
PDX
16h 05m
1 stop
€540British Airways
Thu, 5 Mar - Wed, 11 Mar
United Airlines Logo
15:59 - 10:15
PDX
-
SNN
34h 16m
3 stops
United Airlines Logo
12:30 - 21:06
SNN
-
PDX
16h 36m
1 stop
€544United Airlines
Thu, 30 Apr - Thu, 14 May
British Airways Logo
15:52 - 16:45
PDX
-
SNN
16h 53m
2 stops
British Airways Logo
07:50 - 00:15
SNN
-
PDX
23h 25m
2 stops
€548British Airways
Thu, 5 Mar - Wed, 11 Mar
British Airways Logo
13:52 - 16:45
PDX
-
SNN
18h 53m
2 stops
British Airways Logo
07:50 - 21:52
SNN
-
PDX
22h 02m
2 stops
€554British Airways
Wed, 25 Feb - Wed, 4 Mar
British Airways Logo
14:30 - 16:45
PDX
-
SNN
18h 15m
2 stops
British Airways Logo
07:50 - 00:15
SNN
-
PDX
23h 25m
2 stops
€558British Airways
Wed, 4 Mar - Wed, 11 Mar

British Airways flights from Portland to Shannon, Clare

Our best British Airways deals on Portland to Shannon, Clare flight tickets
British Airways
5 Mar
PDX15:52Portland
16h 53m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
16h 05m
1 stop
PDX16:55Portland
€540
British Airways
19 Feb
PDX13:52Portland
21h 33m
2 stops
SNN19:25Shannon
25 Feb
SNN07:50Shannon
16h 05m
1 stop
PDX15:55Portland
€544
British Airways
5 Mar
PDX15:52Portland
16h 53m
2 stops
SNN16:45Shannon
11 Mar
SNN07:50Shannon
23h 25m
2 stops
PDX00:15Portland
€548

Delta flights from Portland to Shannon, Clare

Our best Delta deals on Portland to Shannon, Clare flight tickets
Delta
4 Jul
PDX22:55Portland
28h 15m
2 stops
SNN11:10Shannon
9 Jul
SNN13:05Shannon
16h 41m
2 stops
PDX21:46Portland
€563
Delta
4 Jul
PDX22:05Portland
29h 05m
1 stop
SNN11:10Shannon
8 Jul
SNN13:05Shannon
16h 30m
1 stop
PDX21:35Portland
€563
Delta
8 Jul
PDX22:05Portland
29h 05m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
30h 38m
1 stop
PDX11:43Portland
€566

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 8 February 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

Fri 3/4

22:55-10:15

2 stops27h 20m

Shannon

Wed 15/4

12:30-22:54

2 stops18h 24m

€417

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/4

23:15-10:15

1 stop27h 00m

Shannon

Tue 14/4

12:30-21:59

1 stop17h 29m

€459

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/4

23:15-10:15

1 stop27h 00m

Shannon

Tue 14/4

12:30-00:44

2 stops20h 14m

€464

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 8/4

08:05-10:15

2 stops18h 10m

Shannon

Tue 14/4

12:30-00:44

2 stops20h 14m

€502

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

05:00-10:15

2 stops21h 15m

Shannon

Thu 14/5

12:30-21:06

1 stop16h 36m

€527

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

15:52-16:45

2 stops16h 53m

Shannon

Wed 11/3

07:50-16:55

1 stop16h 05m

€540

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 30/4

15:59-10:15

3 stops34h 16m

Shannon

Thu 14/5

12:30-21:06

1 stop16h 36m

€544

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 5/3

15:52-16:45

2 stops16h 53m

Shannon

Wed 11/3

07:50-00:15

2 stops23h 25m

€548

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 25/2

13:52-16:45

2 stops18h 53m

Shannon

Wed 4/3

07:50-21:52

2 stops22h 02m

€554

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 4/3

14:30-16:45

2 stops18h 15m

Shannon

Wed 11/3

07:50-00:15

2 stops23h 25m

€558

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 and Delta 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 40m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 12h 40m
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 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
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.

An easier way to manage your Shannon, Clare trip

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