CA $218 Cheap Flights from Seattle (SEA) to Denver (DEN)

You can find cheap one-way flights from CA $218 and cheap return flights CA $426 SEA to DEN with Expedia. One-way flights typically cost between CA$135 and CA$1004, and return flights often range between CA$349 and CA$1399. 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 SEA to DEN ticket fares go up or down.

The cheapest months to fly from Seattle, WA (SEA) to Denver, CO (DEN) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

You have a great selection of airlines offering direct flights from Seattle - Tacoma Intl. (SEA) to Denver, CO (DEN-Denver Intl.). There are 5 airlines that fly this non-stop route. Here are some of the top carriers:

* United operates 69 direct flights from Seattle - Tacoma Intl. (SEA) to Denver, CO (DEN-Denver Intl.) every week.
* Southwest Airlines operates 31 direct flights from Seattle - Tacoma Intl. (SEA) to Denver, CO (DEN-Denver Intl.) every week.
* Delta operates 26 direct flights from Seattle - Tacoma Intl. (SEA) to Denver, CO (DEN-Denver Intl.) every week.
* Frontier Airlines operates 13 direct flights from Seattle - Tacoma Intl. (SEA) to Denver, CO (DEN-Denver Intl.) every week.
* American Airlines operates 7 direct flights from Seattle - Tacoma Intl. (SEA) to Denver, CO (DEN-Denver Intl.) every week.

To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver Intl.), 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 airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver Intl.) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver Intl.) is typically January or October. These months offer the cheapest fares, with an average return flight costing around CA$277. While these aren't the most popular months for travel, you'll still find plenty of flight options available. If you're looking for a balance of good prices and a decent selection of flights, these months are a great choice.

You'll find approximately 20 nonstop flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver Intl.). For even more choices, look at flights that include layovers, as there are around 124 connecting flights per day. Some common connection points include Sky Harbor Intl. (PHX), Harry Reid Intl. (LAS), and Sacramento Intl. (SMF).

The earliest flight from Seattle - Tacoma Intl. (SEA) to Denver Intl. (DEN) typically departs around 12:05 AM. This service is offered by American Airlines. This is a seasonal service, active in February and March. An early departure like this can be great for maximizing your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to Denver Intl. (DEN) on a Thursday, with around 97 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, Southwest Airlines, and United. Flight schedules are quite consistent throughout the week, with Thursday offering only slightly more options compared to other days.

The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Denver Intl. (DEN) are in the early morning, from 6am to 9am. Many major carriers, including Alaska Airlines, Southwest Airlines and Delta, offer flights during this window. Many travelers prefer these early morning flights as they allow you to arrive in Denver with plenty of time to start your day, whether for business or leisure.

A direct flight from Seattle - Tacoma Intl. (SEA) to Denver Intl. (DEN) typically takes around 2 hours 48 minutes, covering a distance of approximately 1,645 kilometers. If you opt for a one-stop flight, your travel time will be longer, usually around 8 hours 18 minutes. Flights with two or more stops will take even longer, averaging about 9 hours 18 minutes. 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 extra time when planning your trip.

You can fly business class or first class between SEA and DEN. You can fly business class with Frontier Airlines and Delta.

First class cabins are available on:

• Alaska Airlines
• United
• Delta
• American Airlines

It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver 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.

If you're planning to travel to Denver from Seattle - Tacoma Intl. (SEA), you can fly directly into Denver Intl. (DEN). Some flights may connect through major hubs like Harry Reid International Airport (LAS), San Francisco Intl. (SFO), or Sky Harbor Intl. (PHX) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver Intl.) 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.