PDX - SNN

$320 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 6/2. 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

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Everything you should know

Cheapest round-trip
$757
United Airlines
Sat 8/22Wed 8/26
PDX - SNN • 2 stops
Cheapest one-way
$320
Multiple Airlines
Tue 6/2
PDX - SNN • 3 stops
Top airlines
Cheapest • from $757 (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 40m (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

Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
1:04 pm - 7:30 am
PDX
-
SNN
34h 26m
2 stops
United Airlines Logo
9:30 am - 3:30 pm
SNN
-
PDX
14h 00m
1 stop
$757United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
6:57 pm - 7:30 am
PDX
-
SNN
28h 33m
2 stops
United Airlines Logo
9:30 am - 10:52 pm
SNN
-
PDX
21h 22m
2 stops
$758United Airlines
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
6:57 pm - 7:30 am
PDX
-
SNN
28h 33m
2 stops
United Airlines Logo
9:30 am - 3:30 pm
SNN
-
PDX
14h 00m
1 stop
$765United Airlines
Sat, Sep 5 - Sat, Sep 19
United Airlines Logo
11:15 pm - 7:30 am
PDX
-
SNN
24h 15m
1 stop
United Airlines Logo
9:30 am - 6:47 pm
SNN
-
PDX
17h 17m
1 stop
$767United Airlines
Sat, Sep 5 - Sat, Sep 19
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
$768United Airlines
Sat, Jul 18 - Thu, Jul 23
Delta Logo
10:35 pm - 11:10 am
PDX
-
SNN
28h 35m
1 stop
Delta Logo
1:05 pm - 9:13 pm
SNN
-
PDX
16h 08m
1 stop
$792Delta
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
$799Delta
Sat, Sep 5 - Sat, Sep 19
KLM Logo
10:05 pm - 11:10 am
PDX
-
SNN
29h 05m
1 stop
KLM Logo
1:05 pm - 9:35 pm
SNN
-
PDX
16h 30m
1 stop
$801KLM
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
8:29 am - 7:30 am
PDX
-
SNN
15h 01m
1 stop
United Airlines Logo
9:30 am - 3:30 pm
SNN
-
PDX
14h 00m
1 stop
$803United Airlines
Sun, Aug 16 - Thu, Aug 20
United Airlines Logo
7:00 am - 10:15 am
PDX
-
SNN
19h 15m
2 stops
United Airlines Logo
9:30 am - 5:43 pm
SNN
-
PDX
16h 13m
2 stops
$807United 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 ($757) and Delta ($792).

Good to know

Cheapest flight$320
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 $320 for a one-way ticket and $757 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 $548 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 8388 reviews
7.9Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

I am writing to express my dissatisfaction with the poor service and unprofessional staff we encountered when traveling with an infant. Our flight was delayed, and the gate staff failed to manage the boarding process appropriately. Due to incorrect, unavailable, or missing 'pink tag' stroller and car seat check-in procedures at the gate, we were forced to board last. Furthermore, the gate staff was rude and dismissive, causing significant distress to our infant. To make matters worse, one of our checked items—an infant sleeper/lounger—was returned to us broken. Given the unsafe handling of essential equipment and unprofessional treatment, I expect a prompt resolution regarding compensation for the damaged items.

2.0 MediocreAadarsh, Apr 2026
CID - MSP
Read more Delta reviews

I am writing to express my dissatisfaction with the poor service and unprofessional staff we encountered when traveling with an infant. Our flight was delayed, and the gate staff failed to manage the boarding process appropriately. Due to incorrect, unavailable, or missing 'pink tag' stroller and car seat check-in procedures at the gate, we were forced to board last. Furthermore, the gate staff was rude and dismissive, causing significant distress to our infant. To make matters worse, one of our checked items—an infant sleeper/lounger—was returned to us broken. Given the unsafe handling of essential equipment and unprofessional treatment, I expect a prompt resolution regarding compensation for the damaged items.

We departed and landed early which was a nice surprise. The boarding process was slow.

N Everything was perfect from boarding to assistance to baggage in Tampa

Subpar. The seating on the plane is almost unbearable. We are literally touching and/or sitting on each other which is totally unacceptable and shameful. Pilots and crew was very accommodating and friendly.

The boarding was organized and informative but the plane was tight meaning that you were sitting on one another and extremely uncomfortable. It’s disappointing that can’t have common seating comfort on the plane.

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

I was told that they needed to check my bag at the gate and to pick it up at the gate in Richmond. No big deal. I know they can't control the weather, but we flew around RIC for 45 minutes to avoid the storm and were 25 minutes late leaving as well. Once we landed, we were told to go to baggage claim to pick up our luggage. I went to bathroom, paid for parking, and went to the assigned baggage claim location. United flight people came down with us as well. They got their luggage immediately. Next, South West people came down about 10 minutes later. They got their luggage next. We finally got our luggage around 30 minutes in waiting. Was not a wonderful experience. No reflection on Delta, but the ground crew was lousy at best.

Everything could have benn better. Short fly, no food, no entertainment and no wifi.

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

The boarding process was straightforward. One pertinent observation regarding all boarding procedures is that if an individual requires assistance or possesses a special status and is part of preboarding, it is advisable to limit the number of passengers who can preboard with them, rather than the entire, sometimes large, companion groups. The seats are uncomfortable, and the entertainment options are significantly inferior compared to other airlines. During the snack service, I requested an additional bag of snacks, but my request was denied. Initially, the flight attendant agreed to my request.becoming a strange accurate moment. The flight duration was four hours.

The flight was officially delayed 3 times, and was actually later than that. Combined, it was a 3 hour delay, but there was no recognition (miles, voucher, etc). The crew seemed stressed. The captain sounded nervous in his announcements. The flight itself was smooth and uneventful.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Great until we got to FRA. The next trip leg we were put in Business Class where seats had minimal padding!!!! They were awful and United Airlines needs to have their Lufthansa partner up their game or I won’t fly with them again!!

I had a good time. However, I paid for the wifi and it was in and out the whole flight.

one staffer was frustrated (it happen); the flight was late and the pilot mentioned they'll make amend but the snacks were the same, other than that the aircraft was clean and everything went smooth, no complaints

The wheelchair service is useless. They live you in different spots, not tell you anything just wait. I waited 30 minutes in Frankfurt when decided to walk the 25 minutes distance. In Budapest nobody came.

It was perfect! I've never flown with United before, but I definitely will in the future

I didn't go from Reno to Phoenix I ended up going from Reno to Dallas to Tucson because my flight rebooked because my Amtrak was late I tried notifying you guys I also don't know what you ask me about my flight because you guys didn't book my flight

Delays experienced in boarding/take off due to incoming plane delayed. However, the boarding time/depart time in the app was significantly delayed in providing these updates. Usually not updated until an hour after we should have already boarded. Poorly managed.

Bag drop was very disorganized in Miami. All main cabin passengers were shunted to just a few lanes and they had an equal number of lanes for first class passengers but there was nobody on those lines. They did nothing to bring the main cab and passengers over to the open lines and they just had employees standing there and doing nothing

there are no options s for snack besides cookies would ve nice to have a salty option n

We did not have enough time to make our connecting flight. As a result, we were put onto a different airline for our second leg. The different airline was NOT comparable to British Airlines, and our arrival was significantly delayed. The actual flight on BA was amazing.

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Human interaction. Thought there would be more service-even a smile would have been nice.

It was canceled at the last minute. While I was literally at the airport. Messed my entire trip up.

Seat was VERY uncomfortable. Flight was delayed and then boarded slowly. The crew was super helpful with boarding and supporting maximizing the luggage in the overhead.

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

Information on your arrival and departure airports