PWM - SNN

$453 Find Cheap Flights from Portland to Shannon - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$738
Typical prices: $651-$1,034
United Airlines
Sat 10/13Sat 10/20
PWM - SNN • 1 stop
Top layover airports
New York John F Kennedy Intl (JFK)
Cheapest • Avg $487 (round-trip)
Newark (EWR)
Shortest trip • 10h 19m (one-way)
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Cheap Flights from Portland to Shannon (PWM-SNN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Shannon

Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
10:43 am - 10:15 amPWM  Portland-SNN Shannon
18h 32m1 stop Newark
United Airlines Logo
12:30 pm - 11:28 pmSNN  Shannon-PWM Portland
15h 58m1 stop Newark
$738United Airlines
Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
3:41 pm - 10:15 amPWM  Portland-SNN Shannon
13h 34m1 stop Newark
United Airlines Logo
12:30 pm - 7:24 pmSNN  Shannon-PWM Portland
35h 54m2 stops Newark Washington, D.C. Dulles Intl
$742United Airlines
Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
2:32 pm - 10:15 amPWM  Portland-SNN Shannon
14h 43m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
12:30 pm - 10:40 amSNN  Shannon-PWM Portland
27h 10m2 stops Newark Chicago O'Hare Intl
$742United Airlines
Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
10:43 am - 10:15 amPWM  Portland-SNN Shannon
18h 32m1 stop Newark
United Airlines Logo
12:30 pm - 11:28 pmSNN  Shannon-PWM Portland
15h 58m1 stop Newark
$769United Airlines
Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
6:55 pm - 10:15 amPWM  Portland-SNN Shannon
10h 20m1 stop Newark
United Airlines Logo
12:30 pm - 2:38 pmSNN  Shannon-PWM Portland
31h 08m2 stops Newark Chicago O'Hare Intl
$773United Airlines
Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
2:32 pm - 10:15 amPWM  Portland-SNN Shannon
14h 43m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
12:30 pm - 10:40 amSNN  Shannon-PWM Portland
27h 10m2 stops Newark Chicago O'Hare Intl
$773United Airlines
Thu, Oct 8 - Wed, Oct 14
United Airlines Logo
5:15 am - 10:15 amPWM  Portland-SNN Shannon
48h 00m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
12:30 pm - 11:28 pmSNN  Shannon-PWM Portland
15h 58m1 stop Newark
$929United Airlines
Tue, Oct 20 - Tue, Oct 27
American Airlines Logo
4:40 pm - 11:20 amPWM  Portland-SNN Shannon
13h 40m2 stops Philadelphia London Heathrow
American Airlines Logo
2:00 pm - 11:59 pmSNN  Shannon-PWM Portland
13h 59m2 stops Boston Logan Intl Washington, D.C. Reagan-National
$975American Airlines
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
6:00 am - 6:00 amPWM  Portland-SNN Shannon
19h 00m1 stop New York John F Kennedy Intl
Multiple Airlines Logo
2:40 pm - 11:43 pmSNN  Shannon-PWM Portland
13h 03m1 stop New York John F Kennedy Intl
$975Multiple Airlines
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
6:00 am - 6:00 amPWM  Portland-SNN Shannon
19h 00m1 stop New York John F Kennedy Intl
Multiple Airlines Logo
2:00 pm - 10:22 amSNN  Shannon-PWM Portland
24h 22m2 stops Boston Logan Intl Washington, D.C. Reagan-National
$988Multiple Airlines
Booking Insights

Price, demand and travel trends for Portland to Shannon flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Portland to Shannon?

Round-trip flights from Portland to Shannon typically range from $651 to $1,034. The lowest price found in the past 5 days was $738, on United Airlines.

Find deals

Key details for Portland to Shannon flights

Cheapest flight

$453
One-way 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

Your Portland to Shannon flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Portland to Shannon?

    Only Economy Class is available on flights from Portland to Shannon.

  • How long is a flight from Portland to Shannon?

    There are currently no nonstop flights available from Portland to Shannon. Flights with 1 layover take between 10h 19m and 15h 44m in total, depending on the connection.

  • Do I need a passport to fly from Portland to Shannon?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Portland to Shannon flight?

    Round-trip flights from Portland to Shannon range from $651 to $1,034, with an average of $956 over the past 12 months. Anything below $651 counts as a good deal.

  • Have flight prices from Portland to Shannon changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $738 to $2,001. That means the highest observed fare was about 3x higher than the lowest one.

  • What car rental options are available at Shannon Airport (SNN)?

    Shannon Airport (SNN) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:

    • Budget
    • Sixt
    • Europcar
    • Thrifty
    • Easirent

  • Which airports can I use when flying from Portland to Shannon?

    Flights from Portland to Shannon usually depart from Portland (PWM) and arrive at Shannon (SNN).

  • Which airports do connecting flights from Portland to Shannon pass through?

    Connecting flights from Portland to Shannon most commonly pass through:

    • Newark (EWR) - 93% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 7% of one-stop connections

  • Can I save money by using flexible dates for flights from Portland to Shannon?

    Yes. Flexible dates can save you up to 41% on flights from Portland to Shannon. Tuesday is the cheapest departure day at $651 round-trip on average, while Saturday is the most expensive at $1,087, a difference of $436.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Portland to Shannon?

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time at 10h 19m, compared with 15h 44m via New York John F Kennedy Intl (JFK).

  • What is the time difference between Portland and Shannon?

    Shannon is 5 hours ahead of Portland (Irish Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Portland to Shannon flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Saturday. On this route, Tuesday flights average $651, about $436 less than Saturday fares (40% savings) based on the last 12 months.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Shannon Airport.

    • Park Inn by Radisson Shannon Airport
    • Treacys Oakwood Hotel
    • Carrygerry Country House

More options for your flight from Portland to Shannon

Complete your trip to Shannon with a hotel stay or car rental

Car rentals in Shannon
Hotels in Shannon