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How to get the cheapest flight ticket from Denver 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?
The cheapest month to fly to Seattle from Denver is in September. Flight prices, which tend to average around R3 020, are often lower during this time because this is during the off-season. If you aren’t able to travel to Seattle during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of R3 020.
What is the cheapest time of day to depart on your flight to Seattle?
According to our data, the cheapest time of day to fly to Seattle is in the morning. momondo users have found flights departing from Denver to Seattle in the morning for as low as R0. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are R984 on average. Flights to Seattle from Denver in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest Denver Intl to Seattle/Tacoma Intl flight route?
Fly from Denver Intl to Seattle/Tacoma Intl for the best Denver Intl - 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 Denver when booking 4 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around R3 459 when searching 4 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Denver for as low as R2 874 on momondo.
What cabin class options are available on Denver Intl to Seattle/Tacoma Intl flights?
There are 1 cabin classes available to choose from on Denver Intl 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.
How have Denver to Seattle flight prices changed over time?
As of March 2025, prices for Denver to Seattle flights are approximately 9% more expensive when compared to flights at the same time last year.
When to book flights from Denver to Seattle
Cheap Denver to Seattle (DEN to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Denver to Seattle
How far is Denver Intl to Seattle/Tacoma Intl by plane?
The distance between Denver Intl and Seattle/Tacoma Intl is about 1640,8 km.
When did momondo last update prices for flights from Denver Intl Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Denver Intl Airport to Seattle/Tacoma Intl Airport are updated daily.
How old do you have to be to fly from Denver Intl Airport to Seattle/Tacoma Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Denver to Seattle?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Denver to Seattle is Boeing 737-800 Passenger/BBJ2 (winglets) (13,10% of total bookings). The next most popular plane models are Boeing 737-800 (11,60%), Airbus A320neo (10,52%), and Airbus A321neo (9,49%).
Travelling 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 Denver to Seattle?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Denver to Seattle. momondo saves you time and could save you money on your trip.
Can I find flights from Denver to Seattle with flexible booking policies on momondo?
All flight searches from Denver to Seattle on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Denver to Seattle?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Denver.
I’m not ready to book a flight from Denver to Seattle right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Seattle from Denver. 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.