PDX - SNN

$351 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 9/23. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$753
United Airlines
Mon 9/7Thu 9/10
PDX - SNN • 1 stop
Cheapest one-way
$351
United Airlines
Wed 9/23
PDX - SNN • 2 stops
Top airlines
Cheapest • from $753 (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 $627 (round-trip)
Shortest trip • 12h 39m (one-way)
Insights
Insights
Insights
Insights
Start a new search
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

Mon, Sep 7 - Thu, Sep 10
United Airlines Logo
8:15 am - 7:30 am
PDX
-
SNN
15h 15m
1 stop
United Airlines Logo
12:30 pm - 10:52 pm
SNN
-
PDX
18h 22m
2 stops
$753United Airlines
Mon, Sep 7 - Thu, Sep 10
United Airlines Logo
7:16 am - 10:15 am
PDX
-
SNN
18h 59m
2 stops
United Airlines Logo
9:30 am - 8:50 pm
SNN
-
PDX
19h 20m
2 stops
$758United Airlines
Mon, Aug 31 - Fri, Sep 4
United Airlines Logo
11:15 pm - 10:15 am
PDX
-
SNN
27h 00m
2 stops
United Airlines Logo
9:30 am - 8:55 pm
SNN
-
PDX
19h 25m
2 stops
$769United Airlines
Mon, Aug 31 - Fri, Sep 4
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
$770United Airlines
Sat, Oct 10 - Wed, Oct 21
United Airlines Logo
10:35 pm - 10:15 am
PDX
-
SNN
27h 40m
1 stop
United Airlines Logo
12:30 pm - 9:13 pm
SNN
-
PDX
16h 43m
1 stop
$776United Airlines
Sat, Oct 10 - Wed, Oct 21
United Airlines Logo
10:35 pm - 10:15 am
PDX
-
SNN
27h 40m
1 stop
United Airlines Logo
12:30 pm - 12:59 am
SNN
-
PDX
20h 29m
2 stops
$781United Airlines
Fri, Oct 9 - Wed, Oct 21
United Airlines Logo
10:59 pm - 10:15 am
PDX
-
SNN
51h 16m
2 stops
United Airlines Logo
12:30 pm - 11:02 pm
SNN
-
PDX
18h 32m
2 stops
$786United Airlines
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
11:02 pm - 10:15 am
PDX
-
SNN
27h 13m
2 stops
United Airlines Logo
9:30 am - 5:43 pm
SNN
-
PDX
16h 13m
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
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 - 11:43 am
SNN
-
PDX
30h 38m
1 stop
$814Delta
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 ($753) and Delta ($809).

Good to know

Cheapest flight$351
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

  • How can I get from Shannon Airport to downtown Shannon?

    The public transport available from SNN airport to Shannon city center is the 343 bus, which takes around seven minutes to get you to town. The bus departs every 30 minutes and offers daily services. However, if you need a quick journey, you can take a taxi or a town car to arrive in the city in approximately five minutes.

  • What business or first-class amenities can I expect when flying from Portland to Shannon?

    Most airlines have special amenities for their first-class passengers. If flying with British Airways, you enjoy comfortable and spacious seats, a cotton duvet, a pillow, and a quilted mattress on your 12-hour flight. If flying with Aer Lingus, you can enjoy lie-flat seats, magazines, and dental kits. However, your airline sends you an email after booking so you know what to expect during your flight.

  • Which airlines offer sustainable journeys from Portland to Shannon?

    If you prefer a more eco-friendly journey when booking cheap flights from Portland to Shannon, choose Aer Lingus. These airlines use sustainable aviation fuel (SAF) and aim to achieve zero carbon emissions by 2050. You can also use British Airways, which creates a better sustainable future through Project Speedbird, to reduce carbon emissions.

  • Can I upgrade to first-class flights from Portland to Shannon?

    Some airlines give you an allowance for upgrading your class of ticket when flying from Portland to Shannon. Mostly, your airline sends you an email after you book to offer the opportunity to upgrade, especially if first-class seats are available. This is a great opportunity because the journey from Portland to Shannon is longer, and comfortable first-class seats give you a smooth travel experience.

  • 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 $351 for a one-way ticket and $753 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?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Portland and Shannon, with SkyTeam 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.

KAYAK’s top tips for finding a cheap flight from Portland to Shannon

  • Shannon Airport (SNN) serves several nearby cities. Upon arrival, you can visit a few cities, such as Limerick to the southeast, Ennis to the north, Adare to the south, and Gort to the north. These cities have many attractions and new cultures to make your days lively.
  • Most airlines from Portland to Shannon, including British Airways, Aer Lingus, and United Airlines, have layovers in New York. Before booking, check the layover period to book an airline that arrives at your convenience.
  • Portland International Airport (PDX) is a hub for Alaska Airlines, while SNN airport is a hub for Aer Lingus. These airports serve several domestic and international cities, in North American and European countries.
  • One of the most convenient ways to travel from downtown Portland to PDX airport is taking the MAX Red Line tram to arrive in around 39 minutes. Also, you can board a Line 12 or MAX Line bus to get to the airport in approximately 1h 6min. If you need a quick journey, a taxi or rental car gets you to the airport in about 17 minutes.
  • United Airlines is your best choice if you need a special diet when flying with cheap flights from Portland to Shannon. All you need to do is select one of the available special meals and preorder your meal five days before your flight.

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 8450 reviews
8.1Boarding
7.8Comfort
7.8Entertainment
7.2Food
8.5Crew
Airline reviews

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

6.0 GoodRafiq, May 2026
ATL - GSP
Read more Delta reviews

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Friendliest Flight Attendant I’ve seen since I flew on Southwest Airlines. The whole trip was outstanding…and arrived Early!

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

I didn’t have a seat assignment and my seat was very dirty on the flight from Frankfurt to Budapest.

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

Seat comfort was poor (no lumbar or lower back support).

The airplane seats were spacious and comfortable, and the flight attendants were friendly and attentive. The food was delicious like never before. The blankets and toiletries were thoughtfully provided. The captain's navigation was steady and reliable. In short, having flown with Starlux, I won't consider any other airline next time.

STOP MAKING THE SEATING SO CRAMPED. WE NEED A PASSENGER BILL OF RIGHTS!

The passenger in front of of me reclined their seat back all the way the entire flight. Their headrest was in my face the entire flight! I barely had room for the little plastic cup of water to fit on my tray table; can you make the seats and space between the rows any smaller??? You can’t even get up to use the restroom! Worst flight I’ve had in a very long time!

We had several flights and they were all on-time and flawless

My Frequent Flyer nber wasn't put on as I was told it was..... This resulted in a last group boarding and no priority tags on My bags.

Premium Economy Good crew, good service, excellent food. Seat back screen just not bright enough.

Terrible steward... Plane was quite empty... I asked to move "back" in the plane and the steward said no... Unnecessary power trip of mediocre people.

Flight was delayed an no one cares, or try to help passengers to get the conexión.

Our flight was cancelled while we are on our way to the airport. So, no notice. We were rescheduled to another airline with a 2 hour later takeoff and so arrived at our destination on time. We pre-paid American Airlines $190 to upgrade our seats. No refund. So no use for AA or Kayak.

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

Information on your arrival and departure airports