Cheap flights from the United States to Seattle from $42
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Seattle departing on 7/9. 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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How to get the cheapest flight ticket from United States to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
In general, September is the cheapest month to fly from United States to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $337. If you don’t want to visit Seattle in September, then you should wait until October to fly from United States, when ticket prices are also cheap, with an average price of $351.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from United States is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $474. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from United States because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $566.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from United States in the evening is the least expensive time of day to depart. momondo users have found prices as low as $421 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $610. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest United States to Seattle/Tacoma Intl flight route?
Fly from Las Vegas Harry Reid Intl to Seattle/Tacoma Intl for the best United States - Seattle/Tacoma Intl flight prices
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from United States when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $419 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from United States for as low as $369 on momondo.
What cabin class options are available on United States to Seattle/Tacoma Intl flights?
There are 4 cabin classes available to choose from on United States to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from United States to Seattle/Tacoma Intl?
Spirit Airlines, Alaska Airlines, and United Airlines are the most popular carriers operating from United States to Seattle/Tacoma Intl
What airlines fly to Seattle?
Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to Seattle from United States according to our data. Alaska Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 11 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
How many flights depart from United States to Seattle on average per day?
349 flights are operational daily from United States to Seattle as of June 2025. The most popular departure time for this route is 11:00AM, with 46% of flights per day taking off at noon.
How many flights depart from United States to Seattle on average per week?
2,448 flights are operational weekly from United States to Seattle as of June 2025. The most popular departure day for this route is Thu, with 22% of flights per week taking off on this day.
Cheap United States to Seattle flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from United States to Seattle
When did momondo last update prices for flights from United States to Seattle/Tacoma Intl Airport?
Prices for flights from United States to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from United States to Seattle/Tacoma Intl Airport?
As of June 2025, there are 11 operators available to choose from for flights from United States to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from United States 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 from United States to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from United States to Seattle?
momondo data reveals that the most frequently booked plane model on the route from United States to Seattle is Boeing 737-900 Passenger/BBJ3 (winglets), representing 18.23% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 15.78%, Boeing 737 MAX 9 at 13.63%, and Boeing 737 at 10.71%.
Best airlines flying from United States to Seattle
Compare and see reviews for airlines that fly from United States to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $38 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $41 | Free Cancellation | Rating 6.3 8,052 reviews | |||
| PriceFrom $97 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $103 | Free Cancellation | Rating 7.8 2,494 reviews | |||
| PriceFrom $116 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $118 | Free Cancellation | Rating 8.0 4,287 reviews | |||
| PriceFrom $127 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $143 | Free Cancellation | Rating 7.3 2,925 reviews | |||
| PriceFrom $157 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $177 | Free Cancellation | Rating 6.9 345 reviews |
Traveling 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 from United States to Seattle?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from United States to Seattle for you.
Can I find flights from United States to Seattle with flexible booking policies on momondo?
Flights from United States to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from United States to Seattle?
Once all potential United States to 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 from United States to Seattle right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Seattle from United States. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.