Compare SEA Flights Deals Book Cheap Flights to Seattle

The most affordable flights can be obtained during January and February because winter is the rainiest and quietest time of the year for tourism in Seattle, and the airlines reduce their prices. Passengers willing to tolerate cloudy weather and colder temperatures can get great deals, much shorter lines at popular sights such as Pike Place Market and the Space Needle.

Summer months, namely July and August, when Seattle offers great weather conditions: long days, warm temperatures, and almost cloudless sky, are peak travel months. Prices increase significantly; travelers need to be ready for an increase of fares of 50-80% compared to January prices. September and October, when tourists visit the city to see colorful autumn leaves, and November and December, during the holiday travel time frame, are also peak months.

The SEA airport processes more than 51 million passengers per year and is known as a big hub for flights to Asia and across the United States. The main carriers that operate at the SEA airport are listed below.

Alaska Airlines:

• Include carry-on and personal bags in all fares; charges for checking bags depend on the ticket class.
• It is the biggest hub for Alaska Airlines, which has the most extensive nonstop route network out of Seattle. Its Mileage Plan is one of the most valuable programs in the industry.

Southwest Airlines:

• No change/cancellation fees, two checked bags are free on any fare class.
• Good domestic network with competitive prices for travel to California, Nevada, and other destinations located in the Western region.

Delta Air Lines:

• Includes carry-on and personal bags in all Main Cabin fares; only a personal item is included in Basic Economy tickets.
• Great for connecting flights via Salt Lake City and Los Angeles airports, and also an excellent choice for flights to the East Coast of the US. If you have a SkyMiles account, expect good redemptions on flights from Seattle.

United Airlines:

• Both the carry-on and personal baggage are included (Economy); Personal bag only included (Basic Economy).
• Operates main hub in San Francisco & Denver, making United an excellent carrier for travelers headed to the San Francisco Bay Area or traveling across the Midwest.

American Airlines:

• Both the carry-on and personal baggage are included (Main Cabin); Personal bag only included (Basic Economy).
• Helpful for travelers going through connections from Los Angeles and Dallas/Fort Worth; good enough for those from the East Coast with no particular bias towards Alaska and Delta Airlines.

Even if Seattle Airport doesn't have as many ultra-low-cost carriers compared to other airports, Frontier and Spirit Airlines still fly certain routes there. It's easy to see how even a $40 savings over Alaska and Southwest can end up being more money due to carry-on baggage charges, seat assignment costs, or even airport check-in fees.

Something you'll want to think about before making that booking:

• Whether or not an overhead bin carry-on or just a personal item under the seat is part of your fare.
• Whether personal items' dimensions are specified, since the most expensive checked bag fees will be applied for oversize bags at the gate.
• If the ticket is non-refundable or non-changeable. Ultra-low-cost and Basic Economy tickets are usually non-refundable and non-changeable.
• Resort fees in case of hotels or rental car insurance for rental cars that could be bundled into your vacation package.

Disclaimer: You should always use CompareMost to make a one-stop comparison of all airlines and travel websites before booking a Seattle ticket.