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Cheap flights from Portland to Shannon from $513

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 9/10. 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
11:59 pm - 10:15 am
PDX
-
SNN
50h 16m
2 stops
United Airlines Logo
12:30 pm - 9:10 pm
SNN
-
PDX
16h 40m
2 stops
$794United Airlines
Fri, Oct 9 - Wed, Oct 21
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
$818Delta
Mon, Aug 31 - Thu, Sep 10
Multiple Airlines Logo
1:15 pm - 11:10 am
PDX
-
SNN
37h 55m
2 stops
Multiple Airlines Logo
1:05 pm - 9:02 pm
SNN
-
PDX
15h 57m
1 stop
$821Multiple Airlines
Mon, Aug 31 - Thu, Sep 10
KLM Logo
1:15 pm - 11:10 am
PDX
-
SNN
37h 55m
2 stops
KLM Logo
1:05 pm - 4:05 pm
SNN
-
PDX
35h 00m
2 stops
$825KLM
Mon, Aug 31 - Thu, Sep 10
United Airlines Logo
11:02 pm - 10:15 am
PDX
-
SNN
27h 13m
2 stops
United Airlines Logo
9:30 am - 3:56 pm
SNN
-
PDX
14h 26m
1 stop
$860United 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
Lufthansa Logo
10:33 pm - 10:15 am
PDX
-
SNN
27h 42m
1 stop
Lufthansa Logo
12:30 pm - 9:27 pm
SNN
-
PDX
16h 57m
1 stop
$885Lufthansa
Fri, Oct 9 - Wed, Oct 21
United Airlines Logo
7:16 am - 7:30 am
PDX
-
SNN
16h 14m
1 stop
United Airlines Logo
9:30 am - 10:52 pm
SNN
-
PDX
21h 22m
1 stop
$890United Airlines
Tue, Aug 11 - Mon, Aug 17
United Airlines Logo
10:58 am - 10:15 am
PDX
-
SNN
15h 17m
1 stop
United Airlines Logo
12:30 pm - 9:27 am
SNN
-
PDX
28h 57m
2 stops
$892United Airlines
Thu, Sep 24 - Sat, Oct 10
United Airlines Logo
7:16 am - 7:30 am
PDX
-
SNN
16h 14m
1 stop
United Airlines Logo
9:30 am - 9:32 am
SNN
-
PDX
32h 02m
2 stops
$894United Airlines
Tue, Aug 11 - Mon, Aug 17

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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
Oct 9
PDX11:59 pmPortland
50h 16m
2 stops
SNN10:15 amShannon
Oct 21
SNN12:30 pmShannon
16h 40m
2 stops
PDX9:10 pmPortland
$794
United Airlines
Sep 5
PDX11:02 pmPortland
27h 13m
2 stops
SNN10:15 amShannon
Sep 19
SNN9:30 amShannon
14h 26m
1 stop
PDX3:56 pmPortland
$860
United Airlines
Aug 11
PDX7:16 amPortland
16h 14m
1 stop
SNN7:30 amShannon
Aug 17
SNN9:30 amShannon
21h 22m
1 stop
PDX10:52 pmPortland
$890

Delta flights from Portland to Shannon, Clare

Our best Delta deals on Portland to Shannon, Clare flight tickets
Delta
Aug 31
PDX10:35 pmPortland
28h 35m
1 stop
SNN11:10 amShannon
Sep 10
SNN1:05 pmShannon
15h 57m
1 stop
PDX9:02 pmPortland
$818
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
Jul 15
PDX7:05 amPortland
20h 05m
1 stop
SNN11:10 amShannon
Jul 21
SNN1:05 pmShannon
16h 08m
1 stop
PDX9:13 pmPortland
$943

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 14, 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

Fri 10/9

11:59 pm-10:15 am

2 stops50h 16m

Shannon

Wed 10/21

12:30 pm-9:10 pm

2 stops16h 40m

$794

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 8/31

10:35 pm-11:10 am

1 stop28h 35m

Shannon

Thu 9/10

1:05 pm-9:02 pm

1 stop15h 57m

$818

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 8/31

1:15 pm-11:10 am

2 stops37h 55m

Shannon

Thu 9/10

1:05 pm-9:02 pm

1 stop15h 57m

$821

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 8/31

1:15 pm-11:10 am

2 stops37h 55m

Shannon

Thu 9/10

1:05 pm-4:05 pm

2 stops35h 00m

$825

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 9/5

11:02 pm-10:15 am

2 stops27h 13m

Shannon

Sat 9/19

9:30 am-3:56 pm

1 stop14h 26m

$860

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

Fri 10/9

10:33 pm-10:15 am

1 stop27h 42m

Shannon

Wed 10/21

12:30 pm-9:27 pm

1 stop16h 57m

$885
Quickest round-trip

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 8/11

7:16 am-7:30 am

1 stop16h 14m

Shannon

Mon 8/17

9:30 am-10:52 pm

1 stop21h 22m

$890

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 9/24

10:58 am-10:15 am

1 stop15h 17m

Shannon

Sat 10/10

12:30 pm-9:27 am

2 stops28h 57m

$892

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 8/11

7:16 am-7:30 am

1 stop16h 14m

Shannon

Mon 8/17

9:30 am-9:32 am

2 stops32h 02m

$894

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
1
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 15% 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 00m

Direct flights

None
The fastest flight from Portland to Shannon, Clare takes 15h 00m
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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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 00m.

  • 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
11,808 reviews
Search American Airlines flights
DeltaPriceFrom $488Free CancellationRating
7.8
8,465 reviews
Search Delta flights
United AirlinesPriceFrom $607Free CancellationRating
7.4
9,988 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
Nenagh
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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