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Cheap flights from Portland to Shannon from $405

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 8/18. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Shannon

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:00 am - 7:30 am
PDX
-
SNN
18h 30m
2 stops
United Airlines Logo
9:30 am - 3:56 pm
SNN
-
PDX
14h 26m
1 stop
$818United Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
12:45 pm - 11:10 am
PDX
-
SNN
14h 25m
1 stop
Multiple Airlines Logo
1:05 pm - 9:03 pm
SNN
-
PDX
15h 58m
1 stop
$818Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
5:00 am - 7:30 am
PDX
-
SNN
18h 30m
2 stops
United Airlines Logo
9:30 am - 6:19 pm
SNN
-
PDX
16h 49m
2 stops
$822United Airlines
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
10:58 am - 10:15 am
PDX
-
SNN
15h 17m
1 stop
United Airlines Logo
12:30 pm - 9:31 am
SNN
-
PDX
29h 01m
2 stops
$847United Airlines
Mon, Sep 28 - Sun, Oct 4
United Airlines Logo
8:30 am - 10:15 am
PDX
-
SNN
17h 45m
2 stops
United Airlines Logo
12:30 pm - 9:31 am
SNN
-
PDX
29h 01m
2 stops
$847United Airlines
Mon, Sep 28 - Sun, Oct 4
Delta Logo
10:35 pm - 11:10 am
PDX
-
SNN
28h 35m
1 stop
Delta Logo
1:05 pm - 9:03 pm
SNN
-
PDX
15h 58m
1 stop
$868Delta
Sat, Sep 5 - Sat, Sep 19
Delta Logo
10:35 pm - 11:10 am
PDX
-
SNN
28h 35m
1 stop
Delta Logo
1:05 pm - 9:03 pm
SNN
-
PDX
15h 58m
1 stop
$873Delta
Sat, Sep 5 - Sat, Sep 19
KLM Logo
10:35 pm - 11:10 am
PDX
-
SNN
28h 35m
1 stop
KLM Logo
1:05 pm - 4:05 pm
SNN
-
PDX
35h 00m
2 stops
$888KLM
Sat, Sep 5 - Sat, Sep 19
Multiple Airlines Logo
6:00 am - 11:10 am
PDX
-
SNN
21h 10m
2 stops
Multiple Airlines Logo
1:05 pm - 4:05 pm
SNN
-
PDX
35h 00m
2 stops
$929Multiple Airlines
Sat, Sep 5 - Sat, Sep 19
Multiple Airlines Logo
7:45 pm - 8:35 pm
PDX
-
SNN
40h 50m
2 stops
Multiple Airlines Logo
7:30 am - 7:11 pm
SNN
-
PDX
19h 41m
3 stops
$1,070Multiple Airlines
Wed, Sep 9 - Wed, Sep 16

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United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets
United Airlines
Sep 9
PDX5:00 amPortland
18h 30m
2 stops
SNN7:30 amShannon
Sep 16
SNN9:30 amShannon
14h 26m
1 stop
PDX3:56 pmPortland
$818
United Airlines
Sep 9
PDX5:00 amPortland
18h 30m
2 stops
SNN7:30 amShannon
Sep 16
SNN9:30 amShannon
16h 49m
2 stops
PDX6:19 pmPortland
$822
United Airlines
Sep 28
PDX8:30 amPortland
17h 45m
2 stops
SNN10:15 amShannon
Oct 4
SNN12:30 pmShannon
29h 01m
2 stops
PDX9:31 amPortland
$847

Delta flights from Portland to Shannon, Clare

Our best Delta deals on Portland to Shannon, Clare flight tickets
Delta
Sep 5
PDX10:35 pmPortland
28h 35m
1 stop
SNN11:10 amShannon
Sep 19
SNN1:05 pmShannon
15h 58m
1 stop
PDX9:03 pmPortland
$868
Delta
Sep 5
PDX10:35 pmPortland
28h 35m
1 stop
SNN11:10 amShannon
Sep 19
SNN1:05 pmShannon
15h 58m
1 stop
PDX9:03 pmPortland
$873

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 July 29, 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

Wed 9/9

5:00 am-7:30 am

2 stops18h 30m

Shannon

Wed 9/16

9:30 am-3:56 pm

1 stop14h 26m

$818
Quickest round-trip

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 9/9

12:45 pm-11:10 am

1 stop14h 25m

Shannon

Wed 9/16

1:05 pm-9:03 pm

1 stop15h 58m

$818

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 9/9

5:00 am-7:30 am

2 stops18h 30m

Shannon

Wed 9/16

9:30 am-6:19 pm

2 stops16h 49m

$822

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 9/28

10:58 am-10:15 am

1 stop15h 17m

Shannon

Sun 10/4

12:30 pm-9:31 am

2 stops29h 01m

$847

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 9/28

8:30 am-10:15 am

2 stops17h 45m

Shannon

Sun 10/4

12:30 pm-9:31 am

2 stops29h 01m

$847

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

10:35 pm-11:10 am

1 stop28h 35m

Shannon

Sat 9/19

1:05 pm-9:03 pm

1 stop15h 58m

$868

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

10:35 pm-11:10 am

1 stop28h 35m

Shannon

Sat 9/19

1:05 pm-9:03 pm

1 stop15h 58m

$873

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

10:35 pm-11:10 am

1 stop28h 35m

Shannon

Sat 9/19

1:05 pm-4:05 pm

2 stops35h 00m

$888

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

6:00 am-11:10 am

2 stops21h 10m

Shannon

Sat 9/19

1:05 pm-4:05 pm

2 stops35h 00m

$929

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 9/9

7:45 pm-8:35 pm

2 stops40h 50m

Shannon

Wed 9/16

7:30 am-7:11 pm

3 stops19h 41m

$1,070

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 16% 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

14h 25m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 14h 25m
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 14h 25m.

  • 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
11,839 reviews
Search American Airlines flights
DeltaPriceFrom $488Free CancellationRating
7.8
8,486 reviews
Search Delta flights
United AirlinesPriceFrom $607Free CancellationRating
7.4
10,052 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
Ennis
Adare
Lahinch
Bunratty
Tipperary

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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