Seattle to Paris Flights (SEA to CDG): Nonstop Airlines, Flight Time and Charles de Gaulle Arrival

Nonstop service exists, and it is the easy choice

Seattle to Paris Charles de Gaulle is a nonstop route. As of recent schedules, Air France and Delta both fly SEA to CDG, with Delta and Air France selling each other's flights through their joint venture, so one booking can mix the two. Frequency rises in summer and can thin out in the depths of winter, so check the calendar for your dates rather than assuming a daily flight.

If the nonstops are full or badly priced, the usual one-stop options are Icelandair via Reykjavik, which has its own nonstop from Seattle and onward flights to Paris, British Airways via London Heathrow, Lufthansa via Frankfurt and KLM via Amsterdam, each with a short European hop at the end. These add three to six hours and a second security check, so the nonstop is worth a modest premium.

Flight time, distance and the two directions

The great-circle distance between SEA and CDG is roughly 5,000 miles (about 8,000 km), and the route runs north over Canada, Greenland and the edge of Iceland rather than straight across the Atlantic. Eastbound, Seattle to Paris typically takes 9.5 to 10 hours with the jet stream behind you. The return is longer, usually 10.5 to 11 hours.

The Paris-bound flights leave Seattle in the early afternoon and land at Charles de Gaulle the next morning, Paris time. The westbound flights leave Paris around midday and arrive in Seattle in the early afternoon of the same day, which makes the return feel shorter than it is.

Leaving from Sea-Tac

Seattle-Tacoma International has one main terminal with concourses A to D and the North and South Satellites, linked by an underground train. International departures, including Delta's and Air France's, often use the South Satellite or Concourse A, but the gate is printed on your boarding pass and can change, so allow for the train ride. International arrivals use the newer International Arrivals Facility on the way back.

For a long-haul departure with checked bags, three hours before departure is sensible; the security checkpoints get long around midday when the European and Asian departures overlap, and the airport's SEA Spot Saver lets you reserve a security time slot at some checkpoints. Link light rail runs from the airport station to downtown Seattle in about 40 minutes, and the airport garage sits across the skybridge from the terminal.

Arriving at Charles de Gaulle and getting into Paris

Air France and Delta both use Terminal 2, typically Halls 2E and 2F for long-haul flights. Terminal 2 is a long chain of halls, and the CDGVAL shuttle train links it to Terminals 1 and 3 and the parking areas. Passport control for non-EU travellers can be slow when several transatlantic flights land together in the morning, and the EU's Entry/Exit System now records biometrics on your first entry, so allow extra time.

Charles de Gaulle is about 25 km north-east of central Paris:

• RER B. The suburban train from the station under Terminal 2 to Gare du Nord, Chatelet-Les Halles and Saint-Michel, about 35 to 50 minutes. Cheapest and usually quickest, but crowded at rush hour with luggage.
• Roissybus. A direct coach to Opera in 60 to 75 minutes, useful for hotels in the 8th and 9th arrondissements.
• Taxi. Official taxis from the rank charge a fixed fare to the Right Bank and a slightly different one to the Left Bank, and take 45 to 75 minutes. Avoid anyone offering a ride inside the arrivals hall.

If you land early and your room will not be ready, most Paris hotels will hold bags. The RER is the easiest way to reach the centre during the morning rush, when traffic on the A1 motorway backs up.

Entry rules for France

France is in the Schengen area. As of recent rules, US passport holders can visit for up to 90 days in any 180-day period without a visa, with a passport valid for at least three months beyond the planned departure and issued within the last ten years. The Entry/Exit System replaces passport stamps with a biometric record, and the ETIAS pre-travel authorisation is expected to become mandatory once it launches. Check France's official visa site and the EU travel pages before you book.

The 90-day count covers the whole Schengen area, not just France, so time spent in Italy or Spain on the same trip counts against it.

Best time to fly and when to book

Late spring and early autumn are Paris at its best: May, June and September bring long days, mild weather and gardens and terraces full of life without the peak crowds. July and August are the busiest months for tourists, while many Parisians leave in August and some small restaurants close. Winter is grey and quiet, with Christmas lights and the January sales.

Fares from Seattle peak in the US summer holidays and over Christmas, and spring break pushes demand in March and April. January to early March and November are the quietest booking windows. For June to August, booking three to five months ahead gives the best choice of seats on the nonstops; outside summer, six to ten weeks is usually enough.

Time difference and jet lag

Paris is nine hours ahead of Seattle for most of the year. The US and Europe change their clocks on different weekends in spring and autumn, so for a week or two the gap is eight hours.

Eastbound is the harder direction. You leave Seattle in the afternoon, get a short night over the Arctic and land in Paris when your body thinks it is late evening. Staying awake until a normal Paris bedtime, getting outside in daylight and eating on local time help most; plan an easy first day. Westbound, you arrive in Seattle in the afternoon and can go to bed early, which most people find easier.

What Seattle travellers get wrong

The most common mistake is booking the first day in Paris as if you had slept; the overnight flight is short and the jet lag is real. The second is taking a taxi in the morning rush when the RER B would have been an hour faster. The third is forgetting that the 90-day Schengen limit counts every country on the trip, which matters for long European summers.