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Cheap flights from Portland to Shannon from $473

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Shannon departing on 3/5. 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.
American Airlines Logo
12:05 pm - 4:45 pmPDX-SNN
20h 40m2 stops
American Airlines Logo
7:50 am - 4:55 pmSNN-PDX
16h 05m1 stop
$473American Airlines
Find Deal
Thu, Mar 5 - Wed, Mar 11
American Airlines Logo
12:05 pm - 4:45 pmPDX-SNN
20h 40m2 stops
American Airlines Logo
7:50 am - 8:24 pmSNN-PDX
19h 34m2 stops
$483American Airlines
Find Deal
Thu, Mar 5 - Wed, Mar 11
American Airlines Logo
7:40 am - 11:30 amPDX-SNN
19h 50m2 stops
American Airlines Logo
7:50 am - 9:24 pmSNN-PDX
21h 34m2 stops
$484American Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
Lufthansa Logo
3:15 pm - 11:15 amPDX-SNN
36h 00m2 stops
Lufthansa Logo
10:55 am - 8:33 pmSNN-PDX
41h 38m2 stops
$490Lufthansa
Find Deal
Thu, Apr 30 - Thu, May 14
United Airlines Logo
7:25 am - 10:15 amPDX-SNN
18h 50m2 stops
United Airlines Logo
12:30 pm - 10:52 pmSNN-PDX
18h 22m2 stops
$492United Airlines
Find Deal
Thu, Apr 16 - Fri, Apr 24
American Airlines Logo
3:18 pm - 8:35 pmPDX-SNN
21h 17m2 stops
American Airlines Logo
9:15 pm - 5:40 pmSNN-PDX
28h 25m1 stop
$503American Airlines
Find Deal
Tue, May 12 - Thu, May 21
American Airlines Logo
3:18 pm - 4:10 pmPDX-SNN
16h 52m2 stops
American Airlines Logo
7:40 am - 11:07 pmSNN-PDX
23h 27m2 stops
$513American Airlines
Find Deal
Tue, May 12 - Thu, May 21
United Airlines Logo
5:35 am - 10:15 amPDX-SNN
20h 40m2 stops
United Airlines Logo
12:30 pm - 7:31 pmSNN-PDX
15h 01m1 stop
$579United Airlines
Find Deal
Thu, Apr 30 - Thu, May 14
American Airlines Logo
3:18 pm - 4:10 pmPDX-SNN
16h 52m2 stops
American Airlines Logo
7:40 am - 5:40 pmSNN-PDX
18h 00m1 stop
$598American Airlines
Find Deal
Thu, Apr 16 - Fri, Apr 24
American Airlines Logo
7:30 pm - 4:10 pmPDX-SNN
12h 40m1 stop
American Airlines Logo
9:15 pm - 5:40 pmSNN-PDX
28h 25m1 stop
$624American Airlines
Find Deal
Thu, Apr 30 - Thu, May 14

United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets
United Airlines
Apr 16
PDX7:25 amPortland
18h 50m
2 stops
SNN10:15 amShannon
Apr 24
SNN12:30 pmShannon
18h 22m
2 stops
PDX10:52 pmPortland
$492
Find similar
United Airlines
Apr 30
PDX5:35 amPortland
20h 40m
2 stops
SNN10:15 amShannon
May 14
SNN12:30 pmShannon
15h 01m
1 stop
PDX7:31 pmPortland
$579
Find similar

American Airlines flights from Portland to Shannon, Clare

Our best American Airlines deals on Portland to Shannon, Clare flight tickets
American Airlines
Mar 5
PDX12:05 pmPortland
20h 40m
2 stops
SNN4:45 pmShannon
Mar 11
SNN7:50 amShannon
16h 05m
1 stop
PDX4:55 pmPortland
$473
Find similar
American Airlines
Mar 5
PDX12:05 pmPortland
20h 40m
2 stops
SNN4:45 pmShannon
Mar 11
SNN7:50 amShannon
19h 34m
2 stops
PDX8:24 pmPortland
$483
Find similar
American Airlines
Dec 2
PDX7:40 amPortland
19h 50m
2 stops
SNN11:30 amShannon
Dec 9
SNN7:50 amShannon
21h 34m
2 stops
PDX9:24 pmPortland
$484
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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 November 18, 2025.
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

Thu 3/5

12:05 pm-4:45 pm

2 stops20h 40m

Shannon

Wed 3/11

7:50 am-4:55 pm

1 stop16h 05m

$473

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 3/5

12:05 pm-4:45 pm

2 stops20h 40m

Shannon

Wed 3/11

7:50 am-8:24 pm

2 stops19h 34m

$483

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 12/2

7:40 am-11:30 am

2 stops19h 50m

Shannon

Tue 12/9

7:50 am-9:24 pm

2 stops21h 34m

$484

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/30

3:15 pm-11:15 am

2 stops36h 00m

Shannon

Thu 5/14

10:55 am-8:33 pm

2 stops41h 38m

$490

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/16

7:25 am-10:15 am

2 stops18h 50m

Shannon

Fri 4/24

12:30 pm-10:52 pm

2 stops18h 22m

$492

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 5/12

3:18 pm-8:35 pm

2 stops21h 17m

Shannon

Thu 5/21

9:15 pm-5:40 pm

1 stop28h 25m

$503

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 5/12

3:18 pm-4:10 pm

2 stops16h 52m

Shannon

Thu 5/21

7:40 am-11:07 pm

2 stops23h 27m

$513

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/30

5:35 am-10:15 am

2 stops20h 40m

Shannon

Thu 5/14

12:30 pm-7:31 pm

1 stop15h 01m

$579

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/16

3:18 pm-4:10 pm

2 stops16h 52m

Shannon

Fri 4/24

7:40 am-5:40 pm

1 stop18h 00m

$598

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/30

7:30 pm-4:10 pm

1 stop12h 40m

Shannon

Thu 5/14

9:15 pm-5:40 pm

1 stop28h 25m

$624

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 day to depart on your flight to Shannon, Clare?

The cheapest day to depart from Portland to Shannon, Clare is on a Wednesday when prices can be found for as low as $623. The most expensive day to fly to Shannon, Clare is Friday, with ticket prices averaging around $1,029.

What is the cheapest time of day to depart on your flight to Shannon, Clare?

Our data shows that the cheapest Portland to Shannon, Clare flights are usually those with departure times at noon. Our users have found flights to Shannon, Clare at noon for as low as $554. Flights in the evening are often more expensive with an average ticket price of $924.

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

You could potentially save up to 9% 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

Direct flights

None
There are no direct flights from Portland to Shannon, Clare. There are no popular flight routes from Portland to Shannon, Clare.
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  • 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 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 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
DeltaPriceFrom $546Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $561Free CancellationRating
7.4
9,016 reviews
Search United Airlines flights
Aer LingusPriceFrom $717Free CancellationRating
7.2
1,373 reviews
Search Aer Lingus flights

Traveling to a place near Shannon?

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

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