Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Portland to Shannon from €299

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 13/10. 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
Voted the Winner of Europe's Best Travel App 2023

Find the cheapest flights from Portland to Shannon

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
18:57 - 10:15
PDX
-
SNN
31h 18m
2 stops
United Airlines Logo
09:30 - 23:09
SNN
-
PDX
21h 39m
1 stop
€645United Airlines
Mon, 31 Aug - Fri, 4 Sep
United Airlines Logo
23:15 - 10:15
PDX
-
SNN
27h 00m
2 stops
United Airlines Logo
09:30 - 15:30
SNN
-
PDX
14h 00m
1 stop
€655United Airlines
Mon, 31 Aug - Fri, 4 Sep
United Airlines Logo
10:56 - 10:15
PDX
-
SNN
15h 19m
1 stop
United Airlines Logo
12:30 - 22:03
SNN
-
PDX
17h 33m
1 stop
€656United Airlines
Mon, 31 Aug - Fri, 4 Sep
United Airlines Logo
10:56 - 10:15
PDX
-
SNN
15h 19m
1 stop
United Airlines Logo
12:30 - 09:30
SNN
-
PDX
29h 00m
2 stops
€660United Airlines
Sun, 4 Oct - Wed, 14 Oct
United Airlines Logo
19:13 - 07:30
PDX
-
SNN
28h 17m
2 stops
United Airlines Logo
09:30 - 15:30
SNN
-
PDX
14h 00m
1 stop
€688United Airlines
Sat, 5 Sep - Sat, 19 Sep
Delta Logo
22:05 - 11:10
PDX
-
SNN
29h 05m
1 stop
Delta Logo
13:05 - 21:35
SNN
-
PDX
16h 30m
1 stop
€689Delta
Sat, 5 Sep - Sat, 19 Sep
Delta Logo
22:05 - 11:10
PDX
-
SNN
29h 05m
1 stop
Delta Logo
13:05 - 11:43
SNN
-
PDX
30h 38m
1 stop
€693Delta
Sat, 5 Sep - Sat, 19 Sep
United Airlines Logo
08:29 - 07:30
PDX
-
SNN
15h 01m
1 stop
United Airlines Logo
12:30 - 21:13
SNN
-
PDX
16h 43m
1 stop
€698United Airlines
Thu, 17 Sep - Thu, 1 Oct
United Airlines Logo
23:55 - 10:15
PDX
-
SNN
26h 20m
2 stops
United Airlines Logo
12:30 - 21:13
SNN
-
PDX
16h 43m
1 stop
€702United Airlines
Fri, 9 Oct - Wed, 21 Oct
United Airlines Logo
07:00 - 07:30
PDX
-
SNN
16h 30m
1 stop
United Airlines Logo
12:30 - 21:13
SNN
-
PDX
16h 43m
1 stop
€715United Airlines
Sun, 20 Sep - Fri, 25 Sep

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Delta flights from Portland to Shannon, Clare

Our best Delta deals on Portland to Shannon, Clare flight tickets
Delta
5 Sept
PDX22:05Portland
29h 05m
1 stop
SNN11:10Shannon
19 Sept
SNN13:05Shannon
16h 30m
1 stop
PDX21:35Portland
€689
Delta
5 Sept
PDX22:05Portland
29h 05m
1 stop
SNN11:10Shannon
19 Sept
SNN13:05Shannon
30h 38m
1 stop
PDX11:43Portland
€693
Delta
8 Jul
PDX22:35Portland
28h 35m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
16h 08m
1 stop
PDX21:13Portland
€779

KLM flights from Portland to Shannon, Clare

Our best KLM deals on Portland to Shannon, Clare flight tickets
KLM
8 Jul
PDX17:14Portland
33h 56m
2 stops
SNN11:10Shannon
22 Jul
SNN13:05Shannon
16h 08m
1 stop
PDX21:13Portland
€782
KLM
8 Jul
PDX17:14Portland
33h 56m
2 stops
SNN11:10Shannon
22 Jul
SNN13:05Shannon
35h 04m
2 stops
PDX16:09Portland
€785
KLM
8 Jul
PDX22:35Portland
28h 35m
1 stop
SNN11:10Shannon
22 Jul
SNN13:05Shannon
18h 39m
2 stops
PDX23:44Portland
€787

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 6 May 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

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 31/8

18:57-10:15

2 stops31h 18m

Shannon

Fri 4/9

09:30-23:09

1 stop21h 39m

€645

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 31/8

23:15-10:15

2 stops27h 00m

Shannon

Fri 4/9

09:30-15:30

1 stop14h 00m

€655

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 31/8

10:56-10:15

1 stop15h 19m

Shannon

Fri 4/9

12:30-22:03

1 stop17h 33m

€656

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 4/10

10:56-10:15

1 stop15h 19m

Shannon

Wed 14/10

12:30-09:30

2 stops29h 00m

€660

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

19:13-07:30

2 stops28h 17m

Shannon

Sat 19/9

09:30-15:30

1 stop14h 00m

€688

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

22:05-11:10

1 stop29h 05m

Shannon

Sat 19/9

13:05-21:35

1 stop16h 30m

€689

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 5/9

22:05-11:10

1 stop29h 05m

Shannon

Sat 19/9

13:05-11:43

1 stop30h 38m

€693
Fastest return journey

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 17/9

08:29-07:30

1 stop15h 01m

Shannon

Thu 1/10

12:30-21:13

1 stop16h 43m

€698

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 9/10

23:55-10:15

2 stops26h 20m

Shannon

Wed 21/10

12:30-21:13

1 stop16h 43m

€702

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 20/9

07:00-07:30

1 stop16h 30m

Shannon

Fri 25/9

12:30-21:13

1 stop16h 43m

€715

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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

12h 39m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 12h 39m
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 39m.

  • 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
Killaloe
Nenagh
Adare
Bunratty
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.

An easier way to manage your Shannon, Clare trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 5/6
Fri 12/6
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland