Cheap flights from Seattle to Dallas from C$ 218

If you are unable to visit Dallas/Fort Worth Airport during the month of October, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around C$ 410.

The cheapest day to depart from Seattle to Dallas/Fort Worth Airport is on a Friday when prices can be found for as low as C$ 307. On the other hand, Sunday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 556.

The cheapest time of day to fly to Dallas/Fort Worth Airport is at noon when flights can be purchased for as low as C$ 312. In the morning is when there is more demand to fly to Dallas/Fort Worth Airport, so prices are often more expensive at around C$ 475 per ticket.

Fly from Seattle/Tacoma Intl to Dallas/Fort Worth for the best Seattle/Tacoma Intl - Dallas/Fort Worth flight prices

You are more likely to see cheaper flights to Dallas/Fort Worth Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Dallas/Fort Worth Airport for around C$ 494 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dallas/Fort Worth Airport from Seattle for as low as C$ 393 on momondo.

There are 3 cabin classes available to choose from on Seattle to Dallas/Fort Worth Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Seattle to Dallas/Fort Worth Airport.

As of June 2026, prices for Seattle to Dallas/Fort Worth Airport flights are approximately 39% more expensive when compared to flights at the same time last year.

United Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Dallas/Fort Worth

Frontier, Alaska Airlines and Hawaiian Airlines are the top three most popular airlines that fly to Dallas/Fort Worth Airport from Seattle according to our data. Frontier is the first choice among our users, with 41% of people opting to fly with this airline when travelling to Dallas/Fort Worth Airport. Keep in mind that there are 4 different airlines that fly to Dallas/Fort Worth Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 14% of flights between Seattle and Dallas have experienced a delay on any given week. The average delay length over the past 12 months has been 148 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, American Airlines has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

Salt Lake City (SLC) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

Flights via Denver (DEN) offer the lowest average round-trip price of C$ 370.

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 5h 52m.

Denver (DEN) has the shortest average layover time for this route: 4h 10m.

As of June 2026, 45 flights take off from Seattle and land in Dallas/Fort Worth Airport each day. The most common flight departure time for this route is 7:00a.m., with 46% of daily flights taking off at noon.

As of June 2026, 315 flights take off from Seattle and land in Dallas/Fort Worth Airport each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.