Cheap flight tickets from Castries to Seattle

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Alternative Castries to Seattle routes

Looking for the cheapest, fastest or easiest route from Castries to Seattle? You could fly into the following airports instead.

Finding cheap flights from Castries to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
As of March 2026, there are no flights flying from Castries to Seattle.
No airlines currently offer direct flights between Castries and Seattle. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 6°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.

Travelling from Castries to Seattle: what you need to know

  • There are two main airports to choose from in Castries. Check out your options leaving from George F. L. Charles Airport (SLU) or Hewanorra Airport (UVF) when searching for a flight from Castries to Seattle.

  • Seattle-Tacoma International Airport (SEA) and Lake Union Sea Plane Base Airport (LKE) are Seattle's chief entry points.

  • Seattle's timezone is UTC-7, making Seattle three hours behind Castries.

  • Allow plenty of time to get on your Castries to Seattle flight. Generally, it's best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months like June, it's best to get to the airport earlier than usual. Plan to arrive two hours before a domestic departure and four hours ahead of international flights when you travel during peak periods in general.

How to find the cheapest flights from Castries to Seattle

  • Don't leave things to the last minute. You're more likely to get cheap Castries to Seattle flights if you book in advance. Airlines often offer some great early bird rates.

  • The 'Whole month' search tool will show you the cheapest plane tickets from Castries to Seattle across each month. It's a good way to snap up a bargain if your plans are flexible.

  • Getting a cheap flight from Castries to Seattle is a piece of cake with Price Alerts. Simply create one of these automatic alerts and we'll get in touch when there's a better deal.

  • Select your preferred arrival and departure times, airlines and number of stops by using the filters. Alternatively, sort your Castries to Seattle flight results by 'Best,' 'Cheapest' or 'Fastest.'

Flying from Castries

George F. L. Charles Airport (SLU)

  • Located around 2 kilometres from the centre of Castries, SLU can be reached in about 5 minutes by car, depending on traffic. The journey by public transport is roughly 40 minutes.

  • After a relaxed start to your travels? Stay near George F. L. Charles Airport. Whether you're taking an early flight from Castries to Seattle or just don't like being rushed, these hotels are the answer:

  • When it comes to the on-time performance of George F. L. Charles Airport, 74.74% of flights stick to their scheduled arrival time.

Hewanorra Airport (UVF)

  • UVF is about 31 kilometres from central Castries. It'll take 1 hour 10 minutes or so to reach the terminal driving from the city centre.

  • Kick off your holiday early with an additional night away from home. Before your flight from Castries to Seattle, stay in one of these hotels near Hewanorra Airport:

  • Hewanorra Airport has an on-time performance rate of 75%. This figure gives an insight into how frequently flights that depart from this airport arrive at their destination on time.

Arriving in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is approximately 19 kilometres from the centre of Seattle. If you're catching a cab or a ride-share, the drive will take around 20 minutes.

  • If you're travelling by public transport, expect a journey time of roughly 55 minutes.

  • If you're arriving on a late flight from Castries to Seattle, nothing beats the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and sleeping soon after at one of these accommodation options near SEA:

  • Get your adventure underway by picking up a Seattle-Tacoma International Airport rental car. Grab a set of wheels from Thrifty, Europcar or Budget and experience the lesser-explored corners of Seattle and beyond.

  • Reserving your ride from Seattle-Tacoma International Airport around one week in advance gives you the best chance of locking in a great deal.

Lake Union Sea Plane Base Airport (LKE)

  • Central Seattle is approximately 3 kilometres from Lake Union Sea Plane Base Airport (LKE). Once your flight from Castries to Seattle has hit the runway and you've made your way to arrivals, the drive should take about 10 minutes.

  • The trip will take approximately 25 minutes on public transport.

  • After your flight from Castries to Seattle, settle in at a hotel close to LKE. These are some comfortable accommodation options that'll help you sink into relaxation mode:

Best time to go to Seattle

  • May is the quietest month for flights from Castries to Seattle, while July is the most popular. Find the ideal time to visit Seattle based on whether you want a bustling atmosphere or a more laid-back vibe.

  • Before locking in your Castries to Seattle tickets, consider what kind of weather works for you. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • February sees average temperatures of between -1ºC (30ºF) and 11ºC (52ºF). Look for cheap flights from Castries to Seattle around that time if you like travelling in cooler conditions.

More about Seattle

  • When it comes to looking for somewhere to rest your head, you'll find the top stays in Seattle right here. Check out these hotels once you've booked your flight from Castries to Seattle:

  • There are so many things to explore in this city it can be hard to figure out where to start. Greyhound: Bus Station, LMN Architects and Boeing Radiation Effects Lab are highlights which should be on any well-planned Seattle itinerary.

Explore more of United States

  • You've done Seattle, now it's time to discover other parts of United States. Travel about 241 kilometres south to Portland to tick off its leading attractions. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, your itinerary will be busy.

  • Spokane is another sought-after destination in United States and is around 370 kilometres east of Seattle. No journey is complete without seeing Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.