PDX - SNN

$401 Find Cheap Flights from Portland to Shannon

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Shannon departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Shannon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Shannon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Shannon, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$754
United Airlines
Sun 9/6Fri 9/11
PDX - SNN • 1 stop
Cheapest one-way
$653
Multiple Airlines
Wed 6/3
PDX - SNN • 1 stop
Top airlines
Cheapest • from $754 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Portland and Shannon. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $744 (round-trip)
Shortest trip • 12h 39m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Shannon!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Shannon (PDX-SNN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Shannon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Shannon

Sun, Sep 6 - Fri, Sep 11
United Airlines Logo
7:00 am - 7:30 am
PDX
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 6:47 pm
SNN
-
PDX
17h 17m
1 stop
$754United Airlines
Sun, Sep 6 - Fri, Sep 11
United Airlines Logo
5:00 am - 7:30 am
PDX
-
SNN
18h 30m
2 stops
United Airlines Logo
12:30 pm - 11:00 pm
SNN
-
PDX
18h 30m
2 stops
$758United Airlines
Sun, Aug 16 - Thu, Aug 20
United Airlines Logo
8:29 am - 7:30 am
PDX
-
SNN
15h 01m
1 stop
United Airlines Logo
9:30 am - 6:47 pm
SNN
-
PDX
17h 17m
1 stop
$770United Airlines
Sun, Aug 16 - Thu, Aug 20
United Airlines Logo
8:29 am - 7:30 am
PDX
-
SNN
15h 01m
1 stop
United Airlines Logo
9:30 am - 6:47 pm
SNN
-
PDX
17h 17m
1 stop
$771United Airlines
Sun, Aug 16 - Thu, Aug 20
United Airlines Logo
8:29 am - 7:30 am
PDX
-
SNN
15h 01m
1 stop
United Airlines Logo
9:30 am - 8:50 pm
SNN
-
PDX
19h 20m
2 stops
$775United Airlines
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
7:13 pm - 7:30 am
PDX
-
SNN
28h 17m
2 stops
United Airlines Logo
12:30 pm - 11:00 pm
SNN
-
PDX
18h 30m
2 stops
$808United Airlines
Sat, Sep 5 - Sat, Sep 19
Delta Logo
10:05 pm - 11:10 am
PDX
-
SNN
29h 05m
1 stop
Delta Logo
1:05 pm - 9:35 pm
SNN
-
PDX
16h 30m
1 stop
$809Delta
Tue, Jul 14 - Sat, Sep 5
United Airlines Logo
10:33 am - 10:15 am
PDX
-
SNN
15h 42m
1 stop
United Airlines Logo
9:30 am - 6:47 pm
SNN
-
PDX
17h 17m
1 stop
$811United Airlines
Fri, Oct 9 - Wed, Oct 21
United Airlines Logo
10:59 pm - 10:15 am
PDX
-
SNN
27h 16m
2 stops
United Airlines Logo
12:30 pm - 10:49 pm
SNN
-
PDX
18h 19m
2 stops
$816United Airlines
Sun, May 24 - Tue, Jun 9
United Airlines Logo
10:51 am - 7:30 am
PDX
-
SNN
12h 39m
1 stop
United Airlines Logo
12:30 pm - 10:30 pm
SNN
-
PDX
18h 00m
2 stops
$837United Airlines
Booking Insights

KAYAK's insights & trends for Portland to Shannon flights

Get data-powered insights and trends into flights from Portland to Shannon to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Portland to Shannon?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Portland to Shannon were found on United Airlines ($754) and Delta ($809).

Good to know

Cheapest flight$653
Flight from Portland to Shannon

When to book flights from Portland to Shannon

Are your dates flexible? Find out the best times to travel from Portland to Shannon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Shannon

  • What is the cheapest flight from Portland to Shannon?

    In the last 3 days, the lowest price for a flight from Portland to Shannon was $653 for a one-way ticket and $754 for a round-trip.

  • Do I need a passport to fly between Portland and Shannon?

    A passport is required to fly from Portland to Shannon.

  • Which airports will I be using when flying from Portland to Shannon?

    Portland and Shannon are both served by 1 main airport. You will leave Portland from Portland and will be arriving at Shannon.

  • Which aircraft models fly most regularly from Portland to Shannon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Shannon?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Portland and Shannon, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Shannon, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Portland to Shannon are Delta and United Airlines. With an average price for the route of $546 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $753 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Portland to Shannon?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Shannon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Shannon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Shannon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Shannon with an airline and back to Portland with another airline. Booking your flights between Portland and SNN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Shannon?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Shannon from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Portland to Shannon

 
See real verified KAYAK customer reviews for airlines flying from Portland to Shannon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Shannon? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8422 reviews
8.1Boarding
7.9Comfort
7.2Food
8.5Crew
7.8Entertainment
Airline reviews

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

6.0 GoodAkanksha Devidas, Apr 2026
BOS - JFK
Read more Delta reviews

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

Very old plane with no inflight entertainment. I purchased the internet pass and it was nearly unusable.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Short trip, no food and therefore no expectation for much interaction with staff who were pleasant and professional. My critique is on comfort of the seats. Exit rows and comfort seats do not provide enough personal space for 3 side-by-side seats, especially when in the middle row. Some passengers are not considerate of the middle seat and there should be signs that state something to the effect of: "please consider giving middle seats use of the armrests."

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

Transparency from pilots, quick boarding and exiting the plane, staff greeted to each and everyone,

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

Putting people that close to the bathroom, where you have to look into the bathroom as people are exiting and entering was not great and the smell was also not great. I know the airlines are desperate for more chairs, but that seat is a crime.

My bags were misplaced!!! Im in a foreign country with no bags

The entertainment options on the seat back video boards were nice.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

Due to cancellation of connecting flight (Lufthansa) I didn’t fly with United

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

The crew was very kind, but no in-flight entertainment monitors and a 2 hour and 30 minute delay was extremely frustrating.

Everything was delayed and the staff sent me to the wrong gate, causing me to miss one of my flights. I arrived at my destination 6 hours later than I was supposed to.

Got home at 3am after deboarding the plane. No compensation offered by American

Delayed flight. Missed connection, AA put us on a later connecting flight. The connection flight was delayed 4 times and we had to deplane. Didnt get home until 3am, when I was supposed to be home at 8:30p. Zero compensation offered from American. I would not fly them again.

The seats need better cushioning for a nearly 5-hour flight, it was a bit uncomfortable. I'm glad American has free wi-fi but there were was a bout 30 minutes in the middle of the flight when there was no connection which was frustrating.

My original flight got delayed day of so I had to rebook it from one layover to two layovers. The flight also left earlier which was a slight inconvenience but manageable. Then my first connection flight got delayed 3 separate times for a total of 2 hours delayed, causing me to miss my second connection flight back to Santa Barbara. Now, because of this missed flight, I am missing my college classes that I pay for.

Flight: Started on time. Comfortable flight. Arrived on time. Crew: Very cordial and helpful. Drinks and snack was served with a smile. Overall enjoyed the trip. Regards, Hari Doss Chanchala Doss

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

It was really a terrific experience both going and returning on AA. Staff and crew were professional.

Everything you need to know for your flight from Portland to Shannon

Information on your arrival and departure airports