Route guide · 1,668 miles
Cheap Flights from Dallas to Seattle
DAL → SEA · Nonstop 3h 53m · Live round-trip fares
Plenty of travelers price out Dallas to Seattle every day — here's how to beat the average fare. Nonstops run about 3h 53m, and the calendar matters more than the airline. Aim to book 3–6 weeks ahead, stay flexible on the day of the week, and set a free alert so a price drop never slips past you.
Live fares for DAL → SEA are updating. Use the search below for real-time prices.
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See live fares
Updated daily
Flight time
3h 53m
Nonstop, typical
Distance
1,668 mi
DAL → SEA
Book ahead
3–6 weeks
Best window, typically
Nonstop airlines
0
Nonstop flights from Dallas to Seattle
Nonstop flights from Dallas to Seattle are flown by US carriers and their regional partners. The 1,668-mile trip takes about 3h 53m gate to gate, and nonstops are usually cheapest when booked 3–6 weeks ahead.
Booking insights: Dallas → Seattle
- Distance: 1,668 miles · nonstop flight time: 3h 53m.
- Cheapest upcoming week in the live data starts around Oct 22, with fares from $161.
- Fares tend to bottom out when you book about 3–6 weeks ahead — earlier than that rarely helps, later usually hurts.
- Midweek departures (Tue–Thu) are consistently cheaper than weekend flights.
- A free fare alert beats daily checking: we watch this route and ping you when prices drop.
Price trend
Cheapest departure weeks ahead
Departing around Oct 22 is currently the cheapest window — about $92 less than the nearest weeks. Based on recent fares found for this route; prices change quickly.
Cheapest month · Dallas → Seattle
October 2026
Every date's recent round-trip fare, at a glance.
Fares from
$161
Cheapest: Tue, Oct 27 — $161 · Priciest: Oct 15 — $253
Get this fare →Recent fares found for specific dates in October 2026. Blank days had no recent fare in our data — ask our team and we'll check them for you.
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Flying from Dallas to Seattle: what you need to know
The flight
At 1,668 miles, this is a long domestic flight — about 3h 53m gate to gate on a nonstop. It deserves a bit of planning: eat before you board or buy early (popular items sell out), and pick your seat with the flight length in mind.
Airlines on this route
fly this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Dallas (DAL)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Dallas airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Seattle (SEA)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Seattle airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars.
When to book
For a trip of 1,668 miles, booking 3–6 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Basic economy fares often exclude checked bags and seat selection. Price the whole trip, not the headline fare.
- Get to the airport two hours before departure; security, not the flight, is the part that runs late.
- If you're traveling with only a carry-on, you can skip the bag-drop line entirely with mobile check-in.
- Download the airline's app before you fly; gate changes and delays show up there first.
- Nonstop time on this route is about 3h 53m — a one-stop itinerary needs to be a lot cheaper to be worth the extra hours.
Dallas to Seattle flight FAQs
How long is the flight from DAL to SEA?
Nonstop flights from Dallas to Seattle take about 3h 53m and cover roughly 1,668 miles. One-stop itineraries add 2–4 hours depending on the layover city.
Are there nonstop flights from Dallas to Seattle?
There are nonstops between DAL and SEA, plus plenty of one-stop choices through the big hubs. Booking 3–6 weeks out usually gets the fairest price.
What is the cheapest month to fly from Dallas to Seattle?
Travelers usually find the gentlest prices away from peak periods — think post-holiday January and the early-fall weeks. Midweek dates inside those windows are cheaper still.
How much are last minute flights from DAL to SEA?
Last-minute flights from DAL to SEA (booked within 7 days of departure) typically cost noticeably more than fares booked 3–6 weeks out. Booking early is the smarter move.
What is a good round-trip deal from Dallas to Seattle?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Dallas to Seattle?
Several US carriers serve this route directly or via their regional partners. Comparing all of them on the live search below usually surfaces the lowest fare for your dates.
How early should I get to Dallas airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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