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Cheap flights from Portland to Shannon from $653

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 6/3. 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
10:45 am - 7:30 am
PDX
-
SNN
12h 45m
1 stop
United Airlines Logo
9:30 am - 3:30 pm
SNN
-
PDX
14h 00m
1 stop
$708United Airlines
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
5:00 am - 7:30 am
PDX
-
SNN
18h 30m
2 stops
United Airlines Logo
12:30 pm - 9:21 am
SNN
-
PDX
28h 51m
2 stops
$712United Airlines
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
6:57 pm - 7:30 am
PDX
-
SNN
28h 33m
2 stops
United Airlines Logo
9:30 am - 3:30 pm
SNN
-
PDX
14h 00m
1 stop
$713United Airlines
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
8:29 am - 7:30 am
PDX
-
SNN
15h 01m
1 stop
United Airlines Logo
9:30 am - 6:47 pm
SNN
-
PDX
17h 17m
1 stop
$753United Airlines
Tue, Aug 11 - Thu, Aug 20
United Airlines Logo
1:04 pm - 7:30 am
PDX
-
SNN
34h 26m
2 stops
United Airlines Logo
9:30 am - 5:43 pm
SNN
-
PDX
16h 13m
2 stops
$757United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
6:57 pm - 7:30 am
PDX
-
SNN
28h 33m
2 stops
United Airlines Logo
9:30 am - 6:47 pm
SNN
-
PDX
17h 17m
1 stop
$758United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
7:00 am - 7:30 am
PDX
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 3:30 pm
SNN
-
PDX
14h 00m
1 stop
$761United Airlines
Tue, Sep 1 - Tue, Sep 8
United Airlines Logo
6:57 pm - 7:30 am
PDX
-
SNN
28h 33m
2 stops
United Airlines Logo
9:30 am - 6:47 pm
SNN
-
PDX
17h 17m
1 stop
$765United 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
$766Delta
Sat, Sep 5 - Sat, Sep 19
Air France Logo
10:15 am - 11:10 am
PDX
-
SNN
16h 55m
2 stops
Air France Logo
1:05 pm - 4:21 pm
SNN
-
PDX
35h 16m
2 stops
$767Air France
Tue, Aug 25 - Tue, Sep 8

United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets
United Airlines
Sep 5
PDX10:45 amPortland
12h 45m
1 stop
SNN7:30 amShannon
Sep 19
SNN9:30 amShannon
14h 00m
1 stop
PDX3:30 pmPortland
$708
United Airlines
Sep 5
PDX6:57 pmPortland
28h 33m
2 stops
SNN7:30 amShannon
Sep 19
SNN9:30 amShannon
14h 00m
1 stop
PDX3:30 pmPortland
$712
United Airlines
Sep 5
PDX6:57 pmPortland
28h 33m
2 stops
SNN7:30 amShannon
Sep 19
SNN9:30 amShannon
14h 00m
1 stop
PDX3:30 pmPortland
$713

KLM flights from Portland to Shannon, Clare

Our best KLM deals on Portland to Shannon, Clare flight tickets
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
$861
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
$939
KLM
Jun 5
PDX6:55 amPortland
20h 15m
1 stop
SNN11:10 amShannon
Jul 3
SNN1:05 pmShannon
16h 06m
1 stop
PDX9:11 pmPortland
$1,103

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 2, 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
Quickest round-trip

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

10:45 am-7:30 am

1 stop12h 45m

Shannon

Sat 9/19

9:30 am-3:30 pm

1 stop14h 00m

$708

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

5:00 am-7:30 am

2 stops18h 30m

Shannon

Sat 9/19

12:30 pm-9:21 am

2 stops28h 51m

$712

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

6:57 pm-7:30 am

2 stops28h 33m

Shannon

Sat 9/19

9:30 am-3:30 pm

1 stop14h 00m

$713

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 8/11

8:29 am-7:30 am

1 stop15h 01m

Shannon

Thu 8/20

9:30 am-6:47 pm

1 stop17h 17m

$753

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 8/22

1:04 pm-7:30 am

2 stops34h 26m

Shannon

Wed 8/26

9:30 am-5:43 pm

2 stops16h 13m

$757

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 8/22

6:57 pm-7:30 am

2 stops28h 33m

Shannon

Wed 8/26

9:30 am-6:47 pm

1 stop17h 17m

$758

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 9/1

7:00 am-7:30 am

1 stop16h 30m

Shannon

Tue 9/8

9:30 am-3:30 pm

1 stop14h 00m

$761

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

6:57 pm-7:30 am

2 stops28h 33m

Shannon

Sat 9/19

9:30 am-6:47 pm

1 stop17h 17m

$765

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

$766

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 8/25

10:15 am-11:10 am

2 stops16h 55m

Shannon

Tue 9/8

1:05 pm-4:21 pm

2 stops35h 16m

$767

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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

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

You could potentially save up to 28% 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

12h 45m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 12h 45m
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 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 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
11,549 reviews
Search American Airlines flights
DeltaPriceFrom $488Free CancellationRating
7.9
8,370 reviews
Search Delta flights
United AirlinesPriceFrom $561Free CancellationRating
7.4
9,533 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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