What airlines fly to Shannon, Clare?

United Airlines, KLM and American Airlines are the top three most popular airlines that fly to Shannon, Clare from Portland according to our data. United Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Shannon, Clare. Keep in mind that there are 4 different airlines that fly to Shannon, Clare on a routine basis, so you have a few additional options to choose from.

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?

As of September 2026, there are 3 operators available to choose from 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.

$599 Cheap Flights from Portland to Shannon, Clare in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Shannon

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:33 pm - 10:15 amPDX Portland-SNN Shannon

27h 42m1 stop Newark

12:30 pm - 9:31 amSNN Shannon-PDX Portland

29h 01m2 stops Newark Chicago O'Hare Intl

$599United Airlines

Mon, Oct 5 - Tue, Oct 20

11:30 pm - 10:15 amPDX Portland-SNN Shannon

26h 45m2 stops Chicago O'Hare Intl Newark

12:30 pm - 9:31 amSNN Shannon-PDX Portland

29h 01m2 stops Newark Chicago O'Hare Intl

$599United Airlines

Mon, Oct 5 - Tue, Oct 20

10:33 pm - 10:15 amPDX Portland-SNN Shannon

27h 42m1 stop Newark

12:30 pm - 9:50 amSNN Shannon-PDX Portland

29h 20m1 stop Newark

$599United Airlines

Mon, Oct 5 - Tue, Oct 20

10:58 am - 10:15 amPDX Portland-SNN Shannon

15h 17m1 stop Newark

12:30 pm - 9:27 pmSNN Shannon-PDX Portland

16h 57m1 stop Newark

$608United Airlines

Tue, Oct 13 - Tue, Oct 20

5:45 pm - 4:45 pmPDX Portland-SNN Shannon

15h 00m1 stop London Heathrow

7:50 am - 3:50 pmSNN Shannon-PDX Portland

16h 00m1 stop London Heathrow

$807British Airways

Wed, Nov 4 - Wed, Nov 11

1:22 pm - 4:45 pmPDX Portland-SNN Shannon

19h 23m2 stops Chicago O'Hare Intl London Heathrow

7:50 am - 3:50 pmSNN Shannon-PDX Portland

16h 00m1 stop London Heathrow

$811British Airways

Wed, Nov 4 - Wed, Nov 11

1:22 pm - 4:45 pmPDX Portland-SNN Shannon

19h 23m2 stops Chicago O'Hare Intl London Heathrow

7:50 am - 9:59 pmSNN Shannon-PDX Portland

22h 09m2 stops London Heathrow Philadelphia

$821British Airways

Wed, Nov 4 - Wed, Nov 11

1:22 pm - 4:45 pmPDX Portland-SNN Shannon

19h 23m2 stops Chicago O'Hare Intl London Heathrow

7:50 am - 7:47 pmSNN Shannon-PDX Portland

19h 57m2 stops London Heathrow Chicago O'Hare Intl

$821British Airways

Tue, Nov 10 - Wed, Nov 18

1:22 pm - 4:45 pmPDX Portland-SNN Shannon

19h 23m2 stops Chicago O'Hare Intl London Heathrow

7:50 am - 3:50 pmSNN Shannon-PDX Portland

16h 00m1 stop London Heathrow

$909American Airlines

Tue, Nov 10 - Wed, Nov 18

11:31 pm - 5:50 amPDX Portland-SNN Shannon

22h 19m2 stops Chicago O'Hare Intl Boston Logan Intl

7:50 am - 10:07 pmSNN Shannon-PDX Portland

22h 17m2 stops London Heathrow Philadelphia

$1,380American Airlines

Sun, Dec 20 - Fri, Jan 1

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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

Dec 26

PDX7:10 pmPortland

37h 35m

2 stops

SNN4:45 pmShannon

Jan 9

SNN5:10 pmShannon

48h 16m

2 stops

PDX9:26 amPortland

$879

Air Canada

Nov 4

PDX10:00 amPortland

22h 45m

2 stops

SNN4:45 pmShannon

Nov 11

SNN7:50 amShannon

22h 37m

3 stops

PDX10:27 pmPortland

$884

Air Canada

Nov 4

PDX7:00 amPortland

20h 30m

3 stops

SNN11:30 amShannon

Nov 11

SNN7:50 amShannon

22h 37m

3 stops

PDX10:27 pmPortland

$929

United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets

United Airlines

Oct 5

PDX11:30 pmPortland

26h 45m

2 stops

SNN10:15 amShannon

Oct 20

SNN12:30 pmShannon

29h 01m

2 stops

PDX9:31 amPortland

$599

United Airlines

Oct 13

PDX10:58 amPortland

15h 17m

1 stop

SNN10:15 amShannon

Oct 20

SNN12:30 pmShannon

16h 57m

1 stop

PDX9:27 pmPortland

$608

United Airlines

Oct 13

PDX10:58 amPortland

15h 17m

1 stop

SNN10:15 amShannon

Oct 20

SNN12:30 pmShannon

29h 01m

2 stops

PDX9:31 amPortland

$612

momondo Fare Finder

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 Portland - SNN Shannon

PDXSNN

Portland

Mon 10/5

10:33 pm-10:15 am

1 stop27h 42m

Shannon

Tue 10/20

12:30 pm-9:31 am

2 stops29h 01m

$599

PortlandShannon

PDX Portland - SNN Shannon

PDXSNN

Portland

Mon 10/5

11:30 pm-10:15 am

2 stops26h 45m

Shannon

Tue 10/20

12:30 pm-9:31 am

2 stops29h 01m

$599

PortlandShannon

PDX Portland - SNN Shannon

PDXSNN

Portland

Mon 10/5

10:33 pm-10:15 am

1 stop27h 42m

Shannon

Tue 10/20

12:30 pm-9:50 am

1 stop29h 20m

$599

PortlandShannon

PDX Portland - SNN Shannon

PDXSNN

Portland

Tue 10/13

10:58 am-10:15 am

1 stop15h 17m

Shannon

Tue 10/20

12:30 pm-9:27 pm

1 stop16h 57m

$608

Quickest round-trip

PortlandShannon

PDX Portland - SNN Shannon

PDXSNN

Portland

Wed 11/4

5:45 pm-4:45 pm

1 stop15h 00m

Shannon

Wed 11/11

7:50 am-3:50 pm

1 stop16h 00m

$807

PortlandShannon

PDX Portland - SNN Shannon

PDXSNN

Portland

Wed 11/4

1:22 pm-4:45 pm

2 stops19h 23m

Shannon

Wed 11/11

7:50 am-3:50 pm

1 stop16h 00m

$811

PortlandShannon

PDX Portland - SNN Shannon

PDXSNN

Portland

Wed 11/4

1:22 pm-4:45 pm

2 stops19h 23m

Shannon

Wed 11/11

7:50 am-9:59 pm

2 stops22h 09m

$821

PortlandShannon

PDX Portland - SNN Shannon

PDXSNN

Portland

Tue 11/10

1:22 pm-4:45 pm

2 stops19h 23m

Shannon

Wed 11/18

7:50 am-7:47 pm

2 stops19h 57m

$821

PortlandShannon

PDX Portland - SNN Shannon

PDXSNN

Portland

Tue 11/10

1:22 pm-4:45 pm

2 stops19h 23m

Shannon

Wed 11/18

7:50 am-3:50 pm

1 stop16h 00m

$909

PortlandShannon

PDX Portland - SNN Shannon

PDXSNN

Portland

Sun 12/20

11:31 pm-5:50 am

2 stops22h 19m

Shannon

Fri 1/1

7:50 am-10:07 pm

2 stops22h 17m

$1,380

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Prices

Airlines

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

Best Price Found	$599
Fastest flight time	15h 00m
Direct flights	None

The best flight deal from Portland to Shannon, Clare found on momondo in the last 72 hours is $599

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.

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 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?
As of September 2026, there are 3 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Shannon, Clare is United Airlines (67% of total bookings). The next most popular airlines are American Airlines (16%) and Delta (16%).

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 Airlines	PriceFrom $480	Free Cancellation	Rating 7.0 12,077 reviews	Search American Airlines flights
Delta	PriceFrom $488	Free Cancellation	Rating 7.8 8,592 reviews	Search Delta flights
United Airlines	PriceFrom $608	Free Cancellation	Rating 7.4 10,227 reviews	Search United Airlines flights

Limerick

Ennis

Adare

Bunratty

Lahinch

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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Cheap flights from Portland to Shannon from $599

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 10/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from Portland to Shannon, Clare

Our best Air Canada deals on Portland to Shannon, Clare flight tickets

United Airlines flights from Portland to Shannon, Clare

Our best United Airlines deals on Portland to Shannon, Clare flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Portland to Shannon, Clare that are best for you.

See travel insights to Shannon from

How to get the cheapest flight ticket from Portland to Shannon, Clare

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

What airlines fly to Shannon, Clare?

When to book flights from Portland to Shannon, Clare

Cheap Portland to Shannon, Clare (PDX to SNN) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near Shannon?

Why use momondo?

An easier way to manage your Shannon, Clare trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ireland

Airports servicing Ireland

Fly your favorite airline to Shannon

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Shannon

List of cabin classes available on flights landing in Shannon. Availability may vary depending on flight origin and airline.

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