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Cheap flights from Portland to Shannon from $302

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 8/21. 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
10:58 am - 10:15 am
PDX
-
SNN
15h 17m
1 stop
United Airlines Logo
12:30 pm - 9:27 pm
SNN
-
PDX
16h 57m
1 stop
$761United Airlines
Wed, Oct 7 - Wed, Oct 21
United Airlines Logo
6:50 am - 10:15 am
PDX
-
SNN
19h 25m
2 stops
United Airlines Logo
12:30 pm - 10:53 pm
SNN
-
PDX
18h 23m
2 stops
$766United Airlines
Wed, Oct 7 - Wed, Oct 21
Lufthansa Logo
8:15 am - 7:30 am
PDX
-
SNN
15h 15m
1 stop
Lufthansa Logo
12:30 pm - 9:27 pm
SNN
-
PDX
16h 57m
1 stop
$811Lufthansa
Sun, Sep 13 - Tue, Oct 6
United Airlines Logo
7:00 am - 7:30 am
PDX
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 3:57 pm
SNN
-
PDX
14h 27m
1 stop
$847United Airlines
Tue, Jul 21 - Tue, Jul 28
United Airlines Logo
5:00 am - 7:30 am
PDX
-
SNN
18h 30m
2 stops
United Airlines Logo
9:30 am - 9:15 pm
SNN
-
PDX
19h 45m
2 stops
$852United Airlines
Tue, Jul 21 - Tue, Jul 28
United Airlines Logo
11:02 pm - 10:15 am
PDX
-
SNN
27h 13m
2 stops
United Airlines Logo
9:30 am - 5:49 pm
SNN
-
PDX
16h 19m
2 stops
$861United Airlines
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 - 9:02 pm
SNN
-
PDX
15h 57m
1 stop
$868Delta
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
11:59 pm - 10:15 am
PDX
-
SNN
26h 16m
2 stops
United Airlines Logo
12:30 pm - 9:32 pm
SNN
-
PDX
17h 02m
1 stop
$870United Airlines
Mon, Jul 20 - Thu, Jul 30
Delta Logo
10:35 pm - 11:10 am
PDX
-
SNN
28h 35m
1 stop
Delta Logo
1:05 pm - 9:02 pm
SNN
-
PDX
15h 57m
1 stop
$871Delta
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
5:15 am - 7:30 am
PDX
-
SNN
18h 15m
2 stops
United Airlines Logo
9:30 am - 3:57 pm
SNN
-
PDX
14h 27m
1 stop
$873United Airlines
Thu, Jul 30 - Thu, Aug 6

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Air Canada flights from Portland to Shannon, Clare

Our best Air Canada deals on Portland to Shannon, Clare flight tickets
Air Canada
Sep 5
PDX10:10 amPortland
21h 55m
3 stops
SNN4:05 pmShannon
Sep 19
SNN7:30 amShannon
34h 01m
2 stops
PDX9:31 amPortland
$1,173
Air Canada
Sep 5
PDX10:10 amPortland
21h 55m
3 stops
SNN4:05 pmShannon
Sep 19
SNN7:30 amShannon
34h 01m
2 stops
PDX9:31 amPortland
$1,181
Air Canada
Jul 21
PDX3:30 pmPortland
21h 05m
2 stops
SNN8:35 pmShannon
Jul 28
SNN7:30 amShannon
19h 41m
3 stops
PDX7:11 pmPortland
$1,292

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 57m
1 stop
PDX9:02 pmPortland
$868
Delta
Sep 5
PDX10:35 pmPortland
28h 35m
1 stop
SNN11:10 amShannon
Sep 19
SNN1:05 pmShannon
15h 57m
1 stop
PDX9:02 pmPortland
$871
Delta
Jul 8
PDX10:40 pmPortland
28h 30m
1 stop
SNN11:10 amShannon
Jul 22
SNN1:05 pmShannon
16h 08m
1 stop
PDX9:13 pmPortland
$1,008

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 June 16, 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 10/7

10:58 am-10:15 am

1 stop15h 17m

Shannon

Wed 10/21

12:30 pm-9:27 pm

1 stop16h 57m

$761

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 10/7

6:50 am-10:15 am

2 stops19h 25m

Shannon

Wed 10/21

12:30 pm-10:53 pm

2 stops18h 23m

$766

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 9/13

8:15 am-7:30 am

1 stop15h 15m

Shannon

Tue 10/6

12:30 pm-9:27 pm

1 stop16h 57m

$811
Quickest round-trip

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 7/21

7:00 am-7:30 am

1 stop16h 30m

Shannon

Tue 7/28

9:30 am-3:57 pm

1 stop14h 27m

$847

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 7/21

5:00 am-7:30 am

2 stops18h 30m

Shannon

Tue 7/28

9:30 am-9:15 pm

2 stops19h 45m

$852

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

11:02 pm-10:15 am

2 stops27h 13m

Shannon

Sat 9/19

9:30 am-5:49 pm

2 stops16h 19m

$861

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

10:35 pm-11:10 am

1 stop28h 35m

Shannon

Sat 9/19

1:05 pm-9:02 pm

1 stop15h 57m

$868

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 7/20

11:59 pm-10:15 am

2 stops26h 16m

Shannon

Thu 7/30

12:30 pm-9:32 pm

1 stop17h 02m

$870

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

10:35 pm-11:10 am

1 stop28h 35m

Shannon

Sat 9/19

1:05 pm-9:02 pm

1 stop15h 57m

$871

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 7/30

5:15 am-7:30 am

2 stops18h 15m

Shannon

Thu 8/6

9:30 am-3:57 pm

1 stop14h 27m

$873

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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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 24% 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 15m

Direct flights

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

  • 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
11,665 reviews
Search American Airlines flights
DeltaPriceFrom $488Free CancellationRating
7.9
8,405 reviews
Search Delta flights
United AirlinesPriceFrom $571Free CancellationRating
7.4
9,842 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
Bunratty
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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