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Cheap flights from Portland to Shannon from $304

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 4/23. 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
11:59 pm - 10:15 am
PDX
-
SNN
26h 16m
2 stops
United Airlines Logo
12:30 pm - 9:59 pm
SNN
-
PDX
17h 29m
1 stop
$480United Airlines
Mon, Apr 6 - Mon, Apr 20
United Airlines Logo
11:40 pm - 7:30 am
PDX
-
SNN
23h 50m
1 stop
United Airlines Logo
9:30 am - 12:51 am
SNN
-
PDX
47h 21m
2 stops
$559United Airlines
Tue, Jul 14 - Wed, Jul 22
United Airlines Logo
5:30 am - 10:15 am
PDX
-
SNN
20h 45m
2 stops
United Airlines Logo
12:30 pm - 9:06 pm
SNN
-
PDX
16h 36m
1 stop
$623United Airlines
Thu, Apr 30 - Thu, May 14
United Airlines Logo
5:30 am - 10:15 am
PDX
-
SNN
20h 45m
2 stops
United Airlines Logo
12:30 pm - 9:38 am
SNN
-
PDX
29h 08m
2 stops
$634United Airlines
Thu, Apr 30 - Thu, May 14
United Airlines Logo
10:51 am - 7:30 am
PDX
-
SNN
12h 39m
1 stop
United Airlines Logo
9:30 am - 9:34 am
SNN
-
PDX
32h 04m
1 stop
$637United Airlines
Tue, Jul 14 - Wed, Jul 22
United Airlines Logo
5:00 am - 7:30 am
PDX
-
SNN
18h 30m
2 stops
United Airlines Logo
9:30 am - 12:51 am
SNN
-
PDX
47h 21m
2 stops
$640United Airlines
Wed, Jul 8 - Wed, Jul 22
United Airlines Logo
3:59 pm - 10:15 am
PDX
-
SNN
34h 16m
3 stops
United Airlines Logo
12:30 pm - 9:06 pm
SNN
-
PDX
16h 36m
1 stop
$643United Airlines
Thu, Apr 30 - Thu, May 14
United Airlines Logo
3:59 pm - 10:15 am
PDX
-
SNN
34h 16m
3 stops
United Airlines Logo
12:30 pm - 9:38 am
SNN
-
PDX
29h 08m
2 stops
$654United Airlines
Thu, Apr 30 - Thu, May 14
Multiple Airlines Logo
7:05 am - 4:10 pm
PDX
-
SNN
25h 05m
2 stops
Multiple Airlines Logo
4:50 pm - 5:40 pm
SNN
-
PDX
32h 50m
1 stop
$658Multiple Airlines
Thu, Apr 9 - Wed, Apr 15
British Airways Logo
7:05 am - 4:45 pm
PDX
-
SNN
25h 40m
2 stops
British Airways Logo
7:50 am - 4:55 pm
SNN
-
PDX
16h 05m
1 stop
$662British Airways
Thu, Mar 5 - Wed, Mar 11

United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets
United Airlines
Apr 6
PDX10:55 pmPortland
27h 20m
2 stops
SNN10:15 amShannon
Apr 20
SNN12:30 pmShannon
29h 18m
2 stops
PDX9:48 amPortland
$480
United Airlines
Jul 14
PDX5:15 amPortland
42h 15m
3 stops
SNN7:30 amShannon
Jul 22
SNN9:30 amShannon
47h 21m
2 stops
PDX12:51 amPortland
$559
United Airlines
Apr 30
PDX5:30 amPortland
20h 45m
2 stops
SNN10:15 amShannon
May 14
SNN12:30 pmShannon
16h 36m
1 stop
PDX9:06 pmPortland
$623

American Airlines flights from Portland to Shannon, Clare

Our best American Airlines deals on Portland to Shannon, Clare flight tickets
American Airlines
Apr 30
PDX11:47 pmPortland
21h 38m
2 stops
SNN5:25 amShannon
May 14
SNN1:45 pmShannon
18h 12m
2 stops
PDX11:57 pmPortland
$723
American Airlines
Apr 30
PDX11:47 pmPortland
21h 38m
2 stops
SNN5:25 amShannon
May 14
SNN7:30 amShannon
18h 10m
1 stop
PDX5:40 pmPortland
$766

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 February 15, 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

Mon 4/6

11:59 pm-10:15 am

2 stops26h 16m

Shannon

Mon 4/20

12:30 pm-9:59 pm

1 stop17h 29m

$480

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 7/14

11:40 pm-7:30 am

1 stop23h 50m

Shannon

Wed 7/22

9:30 am-12:51 am

2 stops47h 21m

$559

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/30

5:30 am-10:15 am

2 stops20h 45m

Shannon

Thu 5/14

12:30 pm-9:06 pm

1 stop16h 36m

$623

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/30

5:30 am-10:15 am

2 stops20h 45m

Shannon

Thu 5/14

12:30 pm-9:38 am

2 stops29h 08m

$634

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 7/14

10:51 am-7:30 am

1 stop12h 39m

Shannon

Wed 7/22

9:30 am-9:34 am

1 stop32h 04m

$637

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 7/8

5:00 am-7:30 am

2 stops18h 30m

Shannon

Wed 7/22

9:30 am-12:51 am

2 stops47h 21m

$640

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/30

3:59 pm-10:15 am

3 stops34h 16m

Shannon

Thu 5/14

12:30 pm-9:06 pm

1 stop16h 36m

$643

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/30

3:59 pm-10:15 am

3 stops34h 16m

Shannon

Thu 5/14

12:30 pm-9:38 am

2 stops29h 08m

$654

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 4/9

7:05 am-4:10 pm

2 stops25h 05m

Shannon

Wed 4/15

4:50 pm-5:40 pm

1 stop32h 50m

$658

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 3/5

7:05 am-4:45 pm

2 stops25h 40m

Shannon

Wed 3/11

7:50 am-4:55 pm

1 stop16h 05m

$662

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 45% 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

16h 41m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 16h 41m
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 16h 41m.

  • 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
7.2
11,295 reviews
Search American Airlines flights
DeltaPriceFrom $488Free CancellationRating
7.9
8,206 reviews
Search Delta flights
United AirlinesPriceFrom $561Free CancellationRating
7.4
9,294 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
Adare
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.

An easier way to manage your Shannon, Clare trip

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