£311 Cheap flights to Seattle

If you are planning a flight to Seattle and are looking to avoid the rain, you should avoid traveling during the months of January, November, and December. These months will typically see 5.1 inches or more of rain, meaning that rain is likely. If you do run into rain while in Seattle, there are still things to do and ways to enjoy your trip. While in Seattle you will find Chihuly Garden and Glass nearby which is a great museum to visit when you’re looking for things to do indoors. For those looking to get out of the rain and do a little shopping, check out Seattle Waterfront.

The city of Seattle has many sights to see while visiting. Many tourists find it ideal to go sightseeing when the weather is warmer, but not blistering. Consider booking your flight to Seattle for October, when temperatures are a bit higher and the chance of rain is relatively low. Many travellers find it worthwhile to visit Space Needle, Seattle Center, and Seattle Waterfront.

In general, most travellers find the cheapest time to book a flight to Seattle is about 90 days prior to their departure date, when tickets on average are £545. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from United Kingdom for as low as £502 on momondo.

Those flying to Seattle could potentially find better pricing at Seattle Lake Union Spb Airport (1 mi from Seattle city centre), Seattle King County/Boeing Airport (6 mi from Seattle city centre), Kenmore Air Harbor Airport (9 mi from Seattle city centre), Everett Paine Field Airport (21 mi from Seattle city centre) or Lopez Island Airport (66 mi from Seattle city centre) depending on the month and departure airport.

With an average price of £117 per person, Seattle Lake Union Spb Airport is the cheapest airport to fly into when planning your trip to Seattle. This price can fluctuate based on where you are flying from. momondo’s Airport-to-Airport Pricing Tool can help users find the best prices.

Prices for flights to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

As of December 2025, there are 19 operators available to choose from for flights to Seattle/Tacoma Intl Airport.

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Seattle/Tacoma Intl Airport.

The travel and health documents required for your trip to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.