Business class flights from Seattle (SEA) to Shannon (SNN) start from $2,200 round-trip — up to 40% below published airline prices. The ~10 hours journey covers 4,488 miles, with 4 airlines offering lie-flat seats on this route. Best time to book: 3–6 months in advance for best fares.
SEA → SNN
Seattle to Shannon Business Class
From$2,200
Quick Verdict
Updated October 2026Seattle to Shannon business class fares start at $2,200 round-trip, with airlines including Delta Air Lines, Alaska Airlines, British Airways, Lufthansa, Iberia. The ~10 hours flight covers 4,488 miles. Peak season: June–August, December. Best value: January–March, November. Book through BestBusinessClass.com to save up to 40%.
From$2,200
Top AirlinesDelta Air Lines · Alaska Airlines · British Airways · Lufthansa · Iberia
Flight Time~10 hours
Best MonthsJanuary–March
Route Overview
Starting From
$2,200 round-trip
Flight Duration
~10 hours
Distance
4,488 miles
Best Value
Jan, Feb, Mar
Savings
Up to 60% off retail
Route Intelligence
Business Class from Seattle to Shannon
Business class fares between Seattle and Shannon run $2,200–$5,500 round-trip through BestBusinessClass.com, roughly 30–50% below the $6,000–$9,000 that airlines and mainstream sites often quote for this 4,488-mile, 10-hour route. Shannon is Ireland's low-key western gateway — the Cliffs of Moher, Galway, the Burren, and Adare Manor are all under an hour's drive, and the airport itself is small enough that arriving passengers clear US preclearance and immigration without the crowds you'd hit in Dublin. It's become a favorite entry point for travelers heading into County Clare or Galway rather than Dublin's east coast.
Airlines & Cabin Experience
There's no nonstop from Seattle, so Seattle to Shannon business class routes connect through a European or East Coast hub, and the airline you pick largely determines which hub and which cabin you'll fly. Delta One Suite, with its closing door and 1-2-1 layout, typically connects via Amsterdam or Paris and comes with a Tumi amenity kit and genuinely private seat — probably the most consistent hard product of the group. British Airways' Club Suite also has a closing door and 1-2-1 configuration, routing through London Heathrow, with soft, quiet cabin service and White Company bedding that's noticeably nicer than BA's older business cabins. Lufthansa's new Allegris suites, flying on the A350 through Frankfurt or Munich, are the newest hardware on this list and worth chasing if your dates line up — Lufthansa hasn't rolled Allegris out fleet-wide yet, so availability varies by day. Iberia routes through Madrid and leans into its reputation for good food and wine service, while Air France connects via Paris CDG with a strong culinary program and access to the La Première lounge for connecting passengers who get bumped up.
Pricing & Best Time to Fly
Pricing on this route swings hard with season. January, February, and March are the cheapest months to fly Seattle to Shannon business class, since post-holiday demand drops and airlines discount seats to fill winter schedules — that's when the $2,200–$3,000 fares tend to surface. October and November are the second sweet spot, after peak summer tourist traffic to Ireland tapers off but before the December holiday rush. Summer (June through August) is the worst time to book on price, since Ireland's peak tourist season pushes fares toward the top of the range or higher. Booking 3-4 months ahead generally gets the best mix of price and seat selection, though last-minute business class deals do pop up when airlines need to fill premium cabins close to departure.
Why Book Through BestBusinessClass.com
This is an eastbound overnight flight, so the itinerary usually has you departing Seattle in the evening, connecting through a European hub the next morning, and arriving into Shannon by midday or early afternoon local time — which works in your favor because you land with a near-full day ahead of you instead of collapsing into a hotel room at 6pm. Pick an airline with a suite that has a door if you actually want to sleep on the transatlantic leg; the short connecting flight from the hub to Shannon is usually a regional jet with a simpler recliner seat, so don't expect lie-flat on that final hop. Bring an eye mask and set your watch to European time as soon as you board — with only one real overnight leg, sleep discipline matters more here than on longer multi-day itineraries.
Travel Tips
Because fares and seat maps shift daily and airlines don't publish their best consolidator rates publicly, it's worth having someone who watches this route for a living. BestBusinessClass.com's Personal Travel Managers track Delta One, British Airways Club Suite, Lufthansa Allegris, Iberia, and Air France pricing on Seattle-Shannon specifically and can usually beat retail by a wide margin — call (855) 815-4774 to get a live quote before you book anything.
Airline Comparison
| Airline | Product | Seat Configuration | Alliance | Key Features | Review |
|---|---|---|---|---|---|
| Delta Air Lines | Delta One Suite | Suite with closing door, 1-2-1 | SkyTeam | Delta One Suite privacy, Tumi amenity kit | Read Review |
| Alaska Airlines | First Class | Recliner, 2-2 | OneWorld | West Coast focus, Mileage Plan | Read Review |
| British Airways | Club Suite | Suite with door, 1-2-1 | OneWorld | Club Suite privacy door, White Company bedding | Read Review |
| Lufthansa | Allegris Business | Lie-flat suite, 1-2-1 | Star Alliance | Flagship A350 suites, German precision service | Read Review |
Delta Air Lines
Delta One Suite
Suite with closing door, 1-2-1
Delta One Suite privacy, Tumi amenity kit
Read Full Review →
Alaska Airlines
First Class
Recliner, 2-2
West Coast focus, Mileage Plan
Read Full Review →
British Airways
Club Suite
Suite with door, 1-2-1
Club Suite privacy door, White Company bedding
Read Full Review →
Lufthansa
Allegris Business
Lie-flat suite, 1-2-1
Flagship A350 suites, German precision service
Read Full Review →Best Time to Book
When Should You Book Seattle to Shannon Business Class?
Business class fares from Seattle to Shannon range from $2,200 to $5,500 round-trip, depending on season and advance booking. The best value is during January–March, November. Peak fares occur June–August, December. Booking 3–6 months ahead and choosing midweek departures typically yields 20–35% savings.
JanBest Value
FebBest Value
MarBest Value
AprAverage
MayAverage
JunPeak Pricing
JulPeak Pricing
AugPeak Pricing
SepAverage
OctAverage
NovGood Value
DecPeak Pricing
💚 Best Value — $2,200–$3,025
💛 Good Value — $2,860–$3,850
🟠 Average — $3,520–$4,510
🔴 Peak Pricing — $4,180–$5,500
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The Business Class Standard
Lie-Flat Guarantee
We only sell true Business Class. 180° fully flat beds on all long-haul routes, ensuring you arrive rested.
Premium Lounges
Access the world's finest lounges. Enjoy pre-flight dining, showers, and quiet workspaces before you board.
Priority Service
Skip the queues. Your ticket includes fast-track security, priority boarding, and premium baggage handling.
The Business Class Standard
Lie-Flat Guarantee
We only sell true Business Class. 180° fully flat beds on all long-haul routes, ensuring you arrive rested.
Premium Lounges
Access the world's finest lounges. Enjoy pre-flight dining, showers, and quiet workspaces before you board.
Priority Service
Skip the queues. Your ticket includes fast-track security, priority boarding, and premium baggage handling.
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