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Cheap flights from Portland to Shannon from $320

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 6/2. 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 round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:56 am - 10:15 am
PDX
-
SNN
15h 19m
1 stop
United Airlines Logo
9:30 am - 6:47 pm
SNN
-
PDX
17h 17m
1 stop
$770United Airlines
Sun, Aug 16 - Thu, Aug 20
United Airlines Logo
7:13 am - 10:15 am
PDX
-
SNN
19h 02m
2 stops
United Airlines Logo
9:30 am - 5:43 pm
SNN
-
PDX
16h 13m
2 stops
$775United Airlines
Sun, Aug 16 - Thu, Aug 20
United Airlines Logo
7:00 am - 7:30 am
PDX
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 11:09 pm
SNN
-
PDX
21h 39m
1 stop
$803United Airlines
Sun, Aug 16 - Thu, Aug 20
United Airlines Logo
7:00 am - 10:15 am
PDX
-
SNN
19h 15m
2 stops
United Airlines Logo
9:30 am - 5:43 pm
SNN
-
PDX
16h 13m
2 stops
$807United Airlines
Sun, Aug 16 - Thu, Aug 20
United Airlines Logo
7:13 pm - 7:30 am
PDX
-
SNN
28h 17m
2 stops
United Airlines Logo
9:30 am - 11:09 pm
SNN
-
PDX
21h 39m
1 stop
$808United Airlines
Sat, Sep 5 - Sat, Sep 19
Delta Logo
10:05 pm - 11:10 am
PDX
-
SNN
29h 05m
1 stop
Delta Logo
1:05 pm - 9:35 pm
SNN
-
PDX
16h 30m
1 stop
$809Delta
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
10:59 pm - 10:15 am
PDX
-
SNN
27h 16m
2 stops
United Airlines Logo
12:30 pm - 9:21 pm
SNN
-
PDX
16h 51m
1 stop
$816United Airlines
Fri, Oct 9 - Wed, Oct 21
KLM Logo
7:00 am - 11:10 am
PDX
-
SNN
20h 10m
1 stop
KLM Logo
1:05 pm - 9:35 pm
SNN
-
PDX
16h 30m
1 stop
$818KLM
Tue, Aug 11 - Thu, Aug 20
United Airlines Logo
10:56 am - 10:15 am
PDX
-
SNN
15h 19m
1 stop
United Airlines Logo
9:30 am - 3:30 pm
SNN
-
PDX
14h 00m
1 stop
$820United Airlines
Sun, Aug 16 - Thu, Aug 20
Multiple Airlines Logo
10:15 am - 11:10 am
PDX
-
SNN
16h 55m
2 stops
Multiple Airlines Logo
1:05 pm - 9:35 pm
SNN
-
PDX
16h 30m
1 stop
$822Multiple Airlines
Sat, Sep 5 - Sat, Sep 19

KLM flights from Portland to Shannon, Clare

Our best KLM deals on Portland to Shannon, Clare flight tickets
KLM
Aug 11
PDX7:00 amPortland
20h 10m
1 stop
SNN11:10 amShannon
Aug 20
SNN1:05 pmShannon
16h 30m
1 stop
PDX9:35 pmPortland
$818
KLM
Jul 8
PDX10:35 pmPortland
28h 35m
1 stop
SNN11:10 amShannon
Jul 22
SNN1:05 pmShannon
18h 39m
2 stops
PDX11:44 pmPortland
$911
KLM
May 23
PDX7:00 amPortland
20h 10m
1 stop
SNN11:10 amShannon
May 30
SNN1:05 pmShannon
34h 55m
2 stops
PDX4:00 pmPortland
$1,006

Delta flights from Portland to Shannon, Clare

Our best Delta deals on Portland to Shannon, Clare flight tickets
Delta
Sep 5
PDX10:05 pmPortland
29h 05m
1 stop
SNN11:10 amShannon
Sep 19
SNN1:05 pmShannon
16h 30m
1 stop
PDX9:35 pmPortland
$809
Delta
May 26
PDX6:55 amPortland
20h 15m
1 stop
SNN11:10 amShannon
Jun 2
SNN1:05 pmShannon
15h 56m
1 stop
PDX9:01 pmPortland
$847
Delta
Jul 8
PDX10:35 pmPortland
28h 35m
1 stop
SNN11:10 amShannon
Jul 22
SNN1:05 pmShannon
16h 08m
1 stop
PDX9:13 pmPortland
$902

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated April 12, 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 round-trip

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 8/16

10:56 am-10:15 am

1 stop15h 19m

Shannon

Thu 8/20

9:30 am-6:47 pm

1 stop17h 17m

$770

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 8/16

7:13 am-10:15 am

2 stops19h 02m

Shannon

Thu 8/20

9:30 am-5:43 pm

2 stops16h 13m

$775

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 8/16

7:00 am-7:30 am

1 stop16h 30m

Shannon

Thu 8/20

9:30 am-11:09 pm

1 stop21h 39m

$803

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 8/16

7:00 am-10:15 am

2 stops19h 15m

Shannon

Thu 8/20

9:30 am-5:43 pm

2 stops16h 13m

$807

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

7:13 pm-7:30 am

2 stops28h 17m

Shannon

Sat 9/19

9:30 am-11:09 pm

1 stop21h 39m

$808

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

10:05 pm-11:10 am

1 stop29h 05m

Shannon

Sat 9/19

1:05 pm-9:35 pm

1 stop16h 30m

$809

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 10/9

10:59 pm-10:15 am

2 stops27h 16m

Shannon

Wed 10/21

12:30 pm-9:21 pm

1 stop16h 51m

$816

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 8/11

7:00 am-11:10 am

1 stop20h 10m

Shannon

Thu 8/20

1:05 pm-9:35 pm

1 stop16h 30m

$818
Quickest round-trip

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 8/16

10:56 am-10:15 am

1 stop15h 19m

Shannon

Thu 8/20

9:30 am-3:30 pm

1 stop14h 00m

$820

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

10:15 am-11:10 am

2 stops16h 55m

Shannon

Sat 9/19

1:05 pm-9:35 pm

1 stop16h 30m

$822

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Can stopping save me money on Portland to Shannon, Clare flights?

You could potentially save up to 13% on your flight if you consider stops on a Portland to Shannon, Clare flight.

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 round-trip 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

15h 19m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 15h 19m
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?

    Portland and Shannon are 4602.4 mi apart from one another. In terms of flight time, this usually takes a little over 15h 19m.

  • 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 many operators does momondo search for flights from Portland Airport to Shannon Airport?

  • How old do you have to be to fly from Portland Airport to Shannon Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents required for your trip to Shannon Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Shannon Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Portland to Shannon, Clare?

Best airlines flying from Portland to Shannon, Clare

Compare and see reviews for airlines that fly from Portland to Shannon, Clare with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $480Free CancellationRating
7.1
11,570 reviews
Search American Airlines flights
DeltaPriceFrom $488Free CancellationRating
7.9
8,408 reviews
Search Delta flights
United AirlinesPriceFrom $561Free CancellationRating
7.4
9,574 reviews
Search United Airlines flights

Traveling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Limerick
Bunratty
Ennis
Adare
Lahinch
Nenagh

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?

All flight searches from Portland to Shannon on momondo can be filtered to show those which offer flexible booking policies.

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?

If you are simply researching potential flights to Shannon, momondo offers a useful price alert feature which will track prices for flights to Shannon from Portland and alert you when they change.

An easier way to manage your Shannon, Clare trip

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