Cheap flights from Seattle to Dallas from C$ 220

If you are unable to visit Dallas/Fort Worth Airport during the month of January, then departing from Seattle during the month October 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$ 338. 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$ 546.

The cheapest time of day to fly to Dallas/Fort Worth Airport is in the afternoon when flights can be purchased for as low as C$ 348. In the evening is when there is more demand to fly to Dallas/Fort Worth Airport, so prices are often more expensive at around C$ 509 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$ 512 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$ 412 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.

You could potentially save up to 68% on your flight if you consider stops on a Seattle to Dallas/Fort Worth Airport flight.

As of August 2026, prices for Seattle to Dallas/Fort Worth Airport flights are approximately 56% more expensive when compared to flights at the same time last year.

Delta, Alaska Airlines, and United 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 49% 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 150 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, Alaska Airlines has had the least delays on this route over the last 12 months, with about 12% 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$ 363.

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 August 2026, 41 flights take off from Seattle and land in Dallas/Fort Worth Airport each day. The most common flight departure time for this route is 10:00a.m., with 42% of daily flights taking off at noon.

As of August 2026, 290 flights take off from Seattle and land in Dallas/Fort Worth Airport each week. The most common flight departure day for this route is Fri, with 17% of weekly flights taking off on this day.