Cheap Flights Seattle to Dallas from £46

Flight FAQs

• Which airlines offer the cheapest flights from Seattle to Dallas?

  Based on Trip.com data, Frontier Airlines offers Cheapest nonstop one-way flights from £46 (for example, SEA–DFW on Sat, Oct 24). For a Cheapest nonstop return flight, Frontier Airlines offers fares from £92, departing on Tue, Oct 20 and returning on Wed, Oct 21.

• Which airlines offer direct flights from Seattle to Dallas?

  At the moment, you can catch a direct flight from Seattle to Dallas with the following airlines, including: Alaska Airlines Delta Air Lines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from Seattle to Dallas?

  A flight from Seattle (SEA) to Dallas (DFW) takes an average of 4 hours 3 minutes.

• When is the best time to book flights from Seattle to Dallas?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Dallas is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there from Seattle to Dallas each week?

  On average, 93 direct flights operate each week between Seattle and Dallas. See below the schedules of the main airlines serving this route:
  Alaska Airlines: S/M/T/W/T/F/S – AS340 (departure at 09:07)

• How can I find the best deals on flights from Seattle to Dallas?

  Here are some tips for finding the best flight deals from Seattle to Dallas on Trip.com:
  · Be flexible with your travel dates. The cheapest flight is currently on Sat, Oct 24, with one-way fares from just £46.
  · Compare airlines. Delta Air Lines currently offers the lowest fares on this route.
  · Set up a price alert to track fare changes without searching every day.
  · Check Trip.com regularly for flight deals and available promo codes.
  · Avoid peak season or book early. July is generally the busiest month for travel to Dallas.
  · Get exclusive promo codes on the Trip.com app.

• When is the best time to book a flight from Seattle to Dallas to get the best price?

  The cheapest month to book a flight from Seattle to Dallas is usually December, when demand is lower.

• Which upcoming date is the cheapest for flights from Seattle to Dallas?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Seattle to Dallas on September 23, 2026 with Frontier Airlines, with prices starting at £47.

• Which airports should you choose for flights from Seattle to Dallas?

  Flights to Dallas can arrive at: Dallas Love Field (DAL) and Dallas Fort Worth International Airport (DFW). The most common route connects Seattle-Tacoma International Airport and Dallas Fort Worth International Airport (SEA–DFW).

• What is the time difference between Seattle and Dallas?

  The time difference between Dallas and Seattle is 2h.

• How can I change or cancel my flight ticket from Seattle to Dallas?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average price of a one-way flight from Seattle to Dallas?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Seattle to Dallas is £164. Fares vary by travel date, airline and availability.

• What is the average price of a return flight from Seattle to Dallas?

  Based on Trip.com data for flights departing in the next 30 days, the average return fare from Seattle to Dallas is £292. Fares vary by travel date, airline and availability.

• How do I book flights from Seattle to Dallas on Trip.com?

  Enter Seattle and Dallas, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.

• Are there budget airlines on the Seattle to Dallas route?

  Frontier Airlinesare the most popular budget airlines flying from Seattle to Dallas. Check baggage, seat and payment fees before comparing the final price.