Business class flights from Seattle (SEA) to Kefalonia (EFL) start from $2,800 round-trip — up to 40% below published airline prices. The ~13 hours journey covers 6,096 miles, with 4 airlines offering lie-flat seats on this route. Best time to book: 3–6 months in advance for best fares.
SEA → EFL
Seattle to Kefalonia Business Class
From$2,800
Quick Verdict
Updated October 2026Seattle to Kefalonia business class fares start at $2,800 round-trip, with airlines including Delta Air Lines, Alaska Airlines, British Airways, Lufthansa, Iberia. The ~13 hours flight covers 6,096 miles. Peak season: June–August, December. Best value: January–March, November. Book through BestBusinessClass.com to save up to 40%.
From$2,800
Top AirlinesDelta Air Lines · Alaska Airlines · British Airways · Lufthansa · Iberia
Flight Time~13 hours
Best MonthsJanuary–March
Route Overview
Starting From
$2,800 round-trip
Flight Duration
~13 hours
Distance
6,096 miles
Best Value
Jan, Feb, Mar
Savings
Up to 60% off retail
Route Intelligence
Business Class from Seattle to Kefalonia
Business class fares from Seattle to Kefalonia through BestBusinessClass.com run $2,800–$7,000 round-trip, roughly 30-45% below retail rates you'd find booking directly with the airlines, for a routing that covers 6,096 miles and typically 13 hours of total flight time across one connection in a European hub.
Airlines & Cabin Experience
Kefalonia is the largest of the Ionian Islands and draws a quieter crowd than Santorini or Mykonos — think Myrtos Beach's white cliffs, the underground lake at Melissani Cave, and villages like Fiskardo that survived the 1953 earthquake with their Venetian architecture intact. There's no nonstop from Seattle, so every itinerary connects through a major European gateway, which actually works in travelers' favor since it opens up several strong business class products for the transatlantic leg.
Pricing & Best Time to Fly
Delta's Delta One Suite is the standout for the Seattle departure, with a closing door, 1-2-1 configuration, and a Tumi amenity kit that's genuinely useful rather than a marketing gimmick. British Airways' Club Suite, also fully enclosed with a door, uses White Company bedding and routes through London before a short hop down to Kefalonia or Athens with a connection. Lufthansa's newer Allegris Business cabin on the A350 is worth seeking out specifically — it's a meaningfully upgraded suite over their older business seats, and connecting through Frankfurt or Munich keeps the second leg manageable. Iberia and Air France round out the options, both offering solid 1-2-1 lie-flat seats with the added benefit of Madrid or Paris connections that put you within a couple hours of Kefalonia by the time you factor in Athens or Preveza gateway flights. For Seattle to Kefalonia business class, the choice often comes down to which connecting city you'd rather spend a layover in, since all five carriers deliver genuine lie-flat comfort on the long transatlantic segment.
Why Book Through BestBusinessClass.com
Pricing on this route swings hard with season. January, February, and March are the cheapest months to fly, since demand into the Ionian Islands is essentially dormant in winter — you'll see fares near the $2,800 floor during these months if you book 3-4 weeks out. October and November also run favorably, as summer crowds thin but weather in Kefalonia stays mild enough for exploring. Peak summer (June through August) pushes fares toward the $7,000 ceiling and beyond, so if your travel dates are flexible, shifting into shoulder season saves both money and crowds at the beaches. Business class inventory on these routes is limited to begin with, so booking 2-3 months ahead for peak season and even earlier for holiday travel windows gives access to better seat maps and fare classes before they close out.
Travel Tips
This is an eastbound overnight journey, meaning you'll typically depart Seattle in the evening, cross multiple time zones while flying through the night, and land in Europe the next morning before a same-day or next-morning connection onward to Kefalonia. Take the overnight leg seriously for sleep — a suite with a door, like Delta One or Club Suite, makes a real difference in how rested you feel landing into a tight connection. Building in a longer layover (2-3 hours minimum) at the connecting hub is smart given occasional delays on transatlantic legs, and it also gives you a buffer if Kefalonia's smaller airport has limited daily flight frequency.
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 Kefalonia Business Class?
Business class fares from Seattle to Kefalonia range from $2,800 to $7,000 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 — $2,800–$3,850
💛 Good Value — $3,640–$4,900
🟠 Average — $4,480–$5,740
🔴 Peak Pricing — $5,320–$7,000
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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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