Cheap flights from Denver, CO to Seattle, WA
Flights starting at $43. Choose between Frontier Airlines, Alaska Airlines, or Spirit Airlines to find the best price.
Make your travel wishlist, we'll do the rest
Hidden deals
Kiwi-Code uncovers prices airlines don't want you to see.
Effortless booking
Use our flexible filters to tailor your search.
Travel hacking
Look out for the travel hack star icon for even cheaper fares.
Tips to know when travelling to Seattle
Cheapest one-way trip | $89 |
|---|---|
Cheapest nonstop round-trip | $43 |
Cheapest round-trip | $227 |
Includes rare itinerary | Travel hack |
Nonstop flights in December | $43 – $565 |
Search by stops
Search by carrier
Search by price
Search by departure date
One-way trips
Updated:
Receive exclusive deals by email
By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.
Travelers usually depart from Denver International, or Denver Union Station when they travel from Denver to Seattle. Book your trip to arrive at Seattle–Tacoma International, Kenmore Air Harbor Seaplane Base, Seattle, WA - University of Washington, Seattle, WA - Poly Clinic, or Seattle, WA - Harborview Med. The distance between Denver and Seattle is 1646 km. The most popular airlines for this route are Frontier Airlines, Alaska Airlines, Spirit Airlines, United Airlines, and American Airlines. Denver and Seattle have 275 direct flights per week.
Weekly direct flights
Discover the top airlines offering direct flights from Denver to Seattle in the next month. You’ll find the number of daily direct flights per airline in the table.
Weekly direct flights for Sun 26.11 - Sat 02.12
| Airline | Sun 26.11 | Mon 27.11 | Tue 28.11 | Wed 29.11 | Thu 30.11 | Fri 01.12 | Sat 02.12 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | --- | --- | --- | 4 | |
| --- | --- | --- | --- | --- | --- | 3 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| --- | --- | --- | --- | --- | --- | --- |
Weekly direct flights for Sun 03.12 - Sat 09.12
| Airline | Sun 03.12 | Mon 04.12 | Tue 05.12 | Wed 06.12 | Thu 07.12 | Fri 08.12 | Sat 09.12 |
|---|---|---|---|---|---|---|---|
| 3 | 2 | --- | 4 | 5 | 5 | 5 | |
| --- | --- | --- | --- | --- | --- | 3 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| --- | --- | --- | --- | --- | --- | 1 |
Weekly direct flights for Sun 10.12 - Sat 16.12
| Airline | Sun 10.12 | Mon 11.12 | Tue 12.12 | Wed 13.12 | Thu 14.12 | Fri 15.12 | Sat 16.12 |
|---|---|---|---|---|---|---|---|
| 3 | 5 | 5 | 5 | 5 | 5 | 5 | |
| 4 | 4 | 3 | 3 | 5 | 4 | 3 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 1 | 1 | 1 | --- | --- | --- | --- |
Weekly direct flights for Sun 17.12 - Sat 23.12
| Airline | Sun 17.12 | Mon 18.12 | Tue 19.12 | Wed 20.12 | Thu 21.12 | Fri 22.12 | Sat 23.12 |
|---|---|---|---|---|---|---|---|
| 5 | 4 | 5 | 5 | 5 | 4 | 5 | |
| 5 | 5 | 5 | 3 | 3 | 4 | 3 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| --- | --- | --- | --- | --- | --- | --- |
Check-in for a flight from Denver to Seattle
| Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
|---|---|---|---|---|
| Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
| Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
| Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
| United Airlines | UAL | UA | Yes | No |
| American Airlines | AAL | AA | No | No |
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from Denver
- Flights from Denver to Las Vegas
- Flights from Denver to Los Angeles
- Flights from Denver to Chicago
- Flights from Denver to Minneapolis
- Flights from Denver to Dallas
- Flights from Denver to Washington, D.C.
- Flights from Denver to Orlando
- Flights from Denver to Phoenix
- Flights from Denver to San Francisco
- Flights from Denver to Houston
- Flights from Denver to San Diego
- Flights from Denver to Austin
- Flights from Denver to Atlanta
- Flights from Denver to Paris
- Flights from Denver to Philadelphia
- Flights from Denver to New York
- Flights from Denver to Miami
- Flights from Denver to London
- Flights from Denver to Tampa
- Flights from Denver to Detroit
Flights to Seattle
- Flights from Atlanta to Seattle
- Flights from Houston to Seattle
- Flights from Las Vegas to Seattle
- Flights from Austin to Seattle
- Flights from Orlando to Seattle
- Flights from Los Angeles to Seattle
- Flights from Salt Lake City to Seattle
- Flights from Mexico City to Seattle
- Flights from Paris to Seattle
- Flights from London to Seattle
- Flights from Washington, D.C. to Seattle
- Flights from Detroit to Seattle
- Flights from New York to Seattle
- Flights from Minneapolis to Seattle
- Flights from Phoenix to Seattle
- Flights from Dallas to Seattle
- Flights from Raleigh to Seattle
- Flights from Charlotte to Seattle
- Flights from Cleveland to Seattle
- Flights from Chicago to Seattle
