Cheap flights from Portland to Shannon from $442
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Shannon departing on 2/7. 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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Fly from
Fly to
Route
Depart
Return
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Sun 1/17
5:45 pm-4:45 pm
1 stop15h 00m
Shannon
Fri 1/22
7:50 am-3:50 pm
1 stop16h 00m
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Sun 1/17
10:59 am-4:45 pm
2 stops21h 46m
Shannon
Fri 1/22
7:50 am-3:50 pm
1 stop16h 00m
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Sun 1/17
3:15 pm-4:45 pm
2 stops17h 30m
Shannon
Fri 1/22
7:50 am-8:46 pm
2 stops20h 56m
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Wed 3/17
3:15 pm-11:30 am
2 stops37h 15m
Shannon
Wed 3/24
7:50 am-2:40 pm
2 stops37h 50m
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Sun 3/14
3:15 pm-11:30 am
2 stops37h 15m
Shannon
Tue 3/23
7:50 am-9:25 am
2 stops32h 35m
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Mon 3/15
10:00 am-4:45 pm
2 stops23h 45m
Shannon
Wed 3/24
7:50 am-9:25 am
2 stops32h 35m
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Sat 3/13
7:10 pm-11:30 am
2 stops56h 20m
Shannon
Tue 3/23
7:50 am-8:45 pm
2 stops19h 55m
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Mon 3/15
7:10 pm-11:30 am
2 stops57h 20m
Shannon
Tue 3/23
7:50 am-9:25 am
2 stops32h 35m
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Tue 3/16
7:00 am-11:30 am
2 stops45h 30m
Shannon
Mon 3/22
8:05 pm-8:45 pm
2 stops31h 40m
PortlandShannon
PDX Portland - SNN Shannon
PDXSNN
Portland
Tue 3/16
10:00 am-11:30 am
2 stops42h 30m
Shannon
Wed 3/24
7:50 am-9:25 am
2 stops32h 35m
See travel insights to Shannon from
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
What is the cheapest airline that flies from Portland to Shannon?
Aer Lingus and Air Canada are the most popular carriers operating from Portland to Shannon
What airlines fly to Shannon, Clare?
United Airlines, KLM and Delta 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 61% of people opting to fly with this airline when traveling to Shannon, Clare. Keep in mind that there are 3 different airlines that fly to Shannon, Clare on a routine basis, so you have a few additional options to choose from.
When to book flights from Portland to Shannon, Clare
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
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 October 2026, there are 2 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 (82% of total bookings). The next most popular airline is Delta (18%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $488 | Free Cancellation | Rating 7.8 8,646 reviews | |||
| PriceFrom $608 | Free Cancellation | Rating 7.4 10,324 reviews |
Traveling to a place near Shannon?
Book flights to Shannon if you plan to visit one of these locationsWhy 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.