Cheap Flights from Dallas to Seattle

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Flight deals from Dallas to Seattle

Looking for a cheap last-minute deal or the best return flight from Dallas to Seattle? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Dallas to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Dallas to Seattle flights are currently cheapest in March.

Direct flights from Dallas to Seattle

Dallas to Seattle: Flight information

The things to know before you go.
Cheapest flight found$241
Cheapest month to flyMarch
Average flight time4 hrs, 21 mins
Most popular airlineAmerican Airlines
Average flights per week1,104

Finding cheap flights from Dallas to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Dallas to Seattle is $241. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 21 minutes is the average flight time from Dallas to Seattle.
American Airlines, Qatar Airways and Alaska Airlines fly direct from Dallas to Seattle.
As of February 2026, there are 552 flights per week flying from Dallas to Seattle.
The cheapest month to fly from Dallas to Seattle is usually March.
If you're flying from Dallas, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from $241.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Dallas to Seattle on Thursday, 5 March 2026.
Yes – the average flight time is 4 hours and 21 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In February, the average temperature is usually around 4°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
The cheapest airline that flies to Seattle is Frontier Airlines. And the cheapest airline that flies to Seattle Boeing Fld Airport is Southwest Airlines.

Travelling from Dallas to Seattle: what you need to know

  • Start your trip planning by checking out the most convenient departure point for your flight from Dallas to Seattle. Explore the options for taking off from Dallas/Fort Worth International Airport (DFW) or Dallas Love Field Airport (DAL), two of the city's main airports.

  • Touch down at Seattle-Tacoma International Airport (SEA). This is how most airline passengers arrive in Seattle.

  • Around 4 hours 20 minutes is how long you'll be travelling on a direct Dallas to Seattle flight.

  • Seattle is two hours behind Dallas and follows the UTC-7 timezone.

  • With 106 flights a week between the two airports, Dallas/Fort Worth International Airport (DFW) to Seattle-Tacoma International Airport (SEA) is the busiest route. Hop on the first flight from Dallas to Seattle with Alaska Airlines at 06:00. If you prefer to make the most of your day before flying, the latest departure from DFW to SEA is with American Airlines at 22:40.

  • Leave enough time to catch your Dallas to Seattle flight. Generally, it's best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months like July, it's a good idea to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead of an international flight when you travel during high season in general.

How to find the cheapest flights from Dallas to Seattle

  • The cheapest price we've seen for a one-way ticket from Dallas to Seattle is $102. For a return flight on this route, the best price is $241. Depending on the availability when you book, these fares may change.

  • Book two months before travelling. Pricing trends suggest that this is the ideal window for finding cheap Dallas to Seattle flights.

  • May is the best month for picking up a fantastic deal on a plane ticket from Dallas to Seattle. If you're looking to travel at a different time of year, the 'Whole month' tool will show you the lowest prices for every month.

  • There's no need to check every day to find out if prices have dropped when you set up a Price Alert. We'll notify you as soon as there's a better deal on cheap flights from Dallas to Seattle.

  • Choose your preferred arrival and departure times, airlines and number of stops with the filters. Or sort your Dallas to Seattle flight results by 'Best,' 'Fastest' or 'Cheapest.'

Flying from Dallas

Dallas/Fort Worth International Airport (DFW)

  • You can book a direct flight from Dallas to Seattle jetting off from Dallas/Fort Worth International Airport (DFW). Start your trip at DFW and land at Seattle-Tacoma International Airport (SEA).

  • Well-known carriers that offer direct Dallas to Seattle plane tickets from DFW include:

  • Travelling from central Dallas to DFW takes around 1 hour by public transport. If you ride-share, drive or grab a cab, you'll cover the 26 kilometres in 25 minutes or so, depending on traffic.

  • Have an early flight from Dallas to Seattle? Avoid the hassle of rushing to the airport (and get some extra shut-eye) by choosing one of these stays close to Dallas/Fort Worth International Airport:

  • 73.22% of flights departing from Dallas/Fort Worth International Airport make it to their destination on time.

  • DFW is located at 2400 Aviation Dr.

Arriving in Seattle

Seattle-Tacoma International Airport (SEA)

  • The distance from Seattle-Tacoma International Airport (SEA) to central Seattle is roughly 19 kilometres. It'll take you around 20 minutes to reach the centre driving.

  • It typically takes 55 minutes to get there on public transport.

  • If you're arriving on a late flight from Dallas to Seattle, few things beat the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and sleeping not long after at one of these hotels near SEA:

  • Go wherever you want, whenever you want with a Seattle-Tacoma International Airport rental car. Book your wheels from Thrifty, Europcar or Budget and venture far and wide through Seattle and beyond.

  • To get the best deal, reserve your vehicle from Seattle-Tacoma International Airport about one week ahead of your Dallas to Seattle flight.

Lake Union Sea Plane Base Airport (LKE)

  • Lake Union Sea Plane Base Airport (LKE) is around 3 kilometres from the centre of Seattle. Once you've disembarked your flight from Dallas to Seattle, it takes approximately 10 minutes to get to the heart of the city in a ride-share or cab.

  • The journey will take about 25 minutes on public transport.

  • You'll find some great places to lay your head close to LKE. Unwind after your Dallas to Seattle flight at one of these well-located options:

Best time to go to Seattle

  • It's time to plan your dates for your flight from Dallas to Seattle. July is the most popular month for a trip to Seattle. If you like a more relaxed atmosphere, go in May.

  • Before locking in your Dallas to Seattle tickets, think about what kind of weather works for you. August is the warmest month in Seattle, with temperatures ranging from 12ºC to 28ºC.

  • If you like travelling in cooler conditions, search for a cheap flight from Dallas to Seattle in February when temperatures average between -1ºC and 11ºC.

More about Seattle

  • Start your Seattle trip right by choosing the ideal place to stay. Once you've booked your flight from Dallas to Seattle, explore our selection of hotels including:

  • Greyhound: Bus Station and LMN Architects are just the start of the top attractions to add to your Seattle must-do list. Keep the sightseeing going at Boeing Radiation Effects Lab.

Explore more of United States

  • Seattle is always a good idea, but there are so many other parts of United States just waiting to be discovered. Around 241 kilometres south of Seattle, a trip to Portland will fill your itinerary to the brim. Start with attractions like Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.

  • If you're ready to explore another well-known destination in United States, consider Spokane, roughly 370 kilometres east of Seattle. Manito Park, Northwest Museum of Arts & Culture and Spokane Falls are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.