£70 Cheap Flights from Denver (DEN) to Seattle (SEA)

You can find cheap one-way flights from £70 and cheap return flights £114 DEN to SEA with Expedia. One-way flights typically cost between £106 and £504, and return flights often range between £430 and £969. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when DEN to SEA ticket fares go up or down.

If you're looking for the cheapest time to fly from Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), February is typically your best bet! You can expect average return flights to be around £170 during this month. February often sees lower prices because it falls after the busy holiday travel season, when demand tends to drop. Other budget-friendly months to consider for this route include January and October.

There are 7 airlines offering direct flights from Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Here are some of the top carriers:
* United operates 55 direct flights from Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
* Southwest Airlines operates 32 direct flights from Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
* Delta operates 27 direct flights from Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
* Qatar Airways operates 16 direct flights from Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
* Frontier Airlines operates 13 direct flights from Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.

Frontier Airlines is one of the cheapest airlines offering nonstop return flights from Denver Intl. (DEN) to Seattle - Tacoma Intl. (SEA), with tickets starting from around £28 for flights that can be booked for departure within the next year. Sun Country Airlines is one of the cheapest airlines offering connecting return flights, with tickets starting from around £300. These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

To find a cheap flight from Denver, CO (DEN) to Seattle, WA (SEA), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

The earliest flight from Denver International Airport (DEN) to Seattle - Tacoma International Airport (SEA) typically departs around 12:20 AM local time, operated by Delta. This is a seasonal service, active only in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

A non-stop flight from Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically takes around 3 hours. This route covers a distance of approximately 1,645 kilometers. If you opt for a flight with one stop, your travel time will be longer, usually around 8 hours 30 minutes. Flights with two or more stops generally take about 9 hours. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some flexibility in your travel plans.

Select the "Business class" and "First class" filters when looking for Denver, CO (DEN) to Seattle, WA (SEA) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.

It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

From Denver Intl. (DEN), you can fly directly into Seattle - Tacoma Intl. (SEA) in Seattle. Some flights may connect through major hubs like San Diego Intl. (SAN), Seattle - Tacoma Intl. (SEA), or Portland Intl. (PDX) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Denver, CO (DEN-Denver Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Denver, CO (DEN) to Seattle, WA (SEA) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.