£240 Cheap flights to Seattle
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Seattle departing on 20/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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What is the cheapest month to fly to Seattle?
The cheapest month to fly to Seattle from United Kingdom is in January. Flight prices, which tend to average around £471, are often lower during this time because this is during the off-season. The month of March is another great option to travel to Seattle, with average flight prices from United Kingdom averaging around £489.
What is the absolute cheapest flight to Seattle?
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What is the cheapest day to depart on your flight to Seattle?
According to our data, Tuesday is the cheapest day to fly to Seattle from United Kingdom. The lowest ticket price found for a Tuesday departure recently was £615. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Sunday is £741.
What is the cheapest time of day to depart on your flight to Seattle?
According to our data, the cheapest time of day to fly to Seattle is in the evening. momondo users have found flights departing from United Kingdom to Seattle in the evening for as low as £526. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive, with an average ticket price of £669.
Cheapest flights to Seattle/Tacoma Intl
Find the cheapest flights to Seattle/Tacoma Intl from your nearest city or airport
| CHEAPEST MONTH TO FLY TO SEATTLE FROM LONDON HEATHROW AIRPORT | February | 18% cheaper | Flying from London Heathrow Airport to Seattle costs on average just £484 in February |
| MOST EXPENSIVE MONTH TO FLY TO SEATTLE FROM LONDON HEATHROW AIRPORT | July | 26% more expensive | It costs about £740 for flights to Seattle from London Heathrow Airport in July |
| MOST POPULAR MONTH TO FLY TO SEATTLE FROM LONDON HEATHROW AIRPORT | August | 211% more users visited | More momondo users searched in flights to Seattle from London Heathrow Airport in August than any other month |
Cheap Seattle flight deals and tips
Summary info about Seattle flight prices, duration and airlines
Best One-Way Price | £240 |
|---|---|
Best Round-Trip Price | £374 |
Fastest flight time | 18h 41m |
Popular in | July |
Frequently asked questions about flying to Seattle
What is there to do in Seattle when it’s raining?
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 Bill and Melinda Gates Foundation Visitor Center 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.
When is it best to fly to Seattle to go sightseeing?
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 Waterfront, and Seattle Center.
How far in advance should I book a flight to Seattle?
In general, most travellers find the cheapest time to book a flight to Seattle is about 69 days prior to their departure date, when tickets on average are £572. 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 £512 on momondo.
When did momondo last update prices for flights to Seattle/Tacoma Intl Airport?
Prices for flights to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights to Seattle/Tacoma Intl Airport?
As of April 2025, there are 21 operators available to choose from for flights to Seattle/Tacoma Intl Airport.
How old do you have to be to fly 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.
What documentation or ID do you need to fly 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.
Travelling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal to Seattle?
It is quick and easy to find flights to Seattle on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.
Can I find flights to Seattle with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for flights to Seattle to just show those with flexible booking policies.
How can momondo help me find flights to Seattle?
Once all potential Seattle flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.
I’m not ready to book a flight to Seattle right now. Can momondo alert me if prices change?
If you are not ready to book a flight to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert; this is where momondo will track prices on flights to Seattle and let you know when they change.
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Popular Flights to Seattle
Popular routes according to searches in the past day on momondo
Cheapest flight routes to Seattle/Tacoma Intl
These routes have the cheapest flights to Seattle/Tacoma Intl found by momondo users in United Kingdom
| Departing | Destination | Best Time | Best Price |
|---|---|---|---|
| London | Seattle | 12h 50m | £380 |
| Manchester | Seattle | 12h 10m | £485 |
| Edinburgh | Seattle | 13h 00m | £538 |
| Glasgow | Seattle | 11h 30m | £541 |
| Birmingham | Seattle | 13h 40m | £553 |
| Belfast | Seattle | 13h 00m | £596 |
| Southampton | Seattle | 26h 05m | £600 |
| Newcastle upon Tyne | Seattle | 17h 57m | £607 |
| Leeds | Seattle | 13h 10m | £628 |
| Bristol | Seattle | 17h 40m | £702 |
| Newquay | Seattle | 38h 38m | £761 |