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Flights from Dallas to Seattle

Search for direct flights from Dallas to Seattle in the next 3 months. Based on Trip.com's latest 7-day flight data, one-way direct flights start at US$120, and round-trip direct flights start at US$230.

      • Cheapest nonstop
        DFW 08:00
        4h 33m
        Nonstop
        SEA 10:33
        Dallas - Seattle | Tue, Aug 25 | Alaska Airlines
        SEA 17:56
        4h 3m
        Nonstop
        DFW 23:59
        Seattle - Dallas | Tue, Aug 25 | Alaska Airlines
        US$230 US$338
        32% off
        32% off
        US$338 US$230
      • DFW 15:49
        4h 22m
        Nonstop
        SEA 18:11
        Dallas - Seattle | Wed, Aug 19 | Alaska Airlines
        SEA 19:06
        11h 3m
        1 stop
        DFW 08:09
        Seattle - Dallas | Wed, Aug 26 | Frontier Airlines
        US$188 US$338
        44% off
        44% off
        US$338 US$188
      • DFW 09:07
        6h 15m
        1 stop
        SEA 13:22
        Dallas - Seattle | Sun, Sep 6 | Frontier Airlines
        SEA 07:00
        11h 35m
        1 stop
        DFW 20:35
        Seattle - Dallas | Mon, Sep 14 | Frontier Airlines
        US$218 US$338
        36% off
        36% off
        US$338 US$218
      • DFW 21:31
        13h 33m
        1 stop
        SEA 09:04
        Dallas - Seattle | Fri, Aug 14 | Frontier Airlines
        SEA 19:06
        16h 13m
        1 stop
        DFW 13:19
        Seattle - Dallas | Wed, Aug 19 | Frontier Airlines
        US$224
        34% off
        US$338 US$224
      • DFW 07:32
        14h 30m
        1 stop
        SEA 20:02
        Dallas - Seattle | Fri, Aug 28 | Frontier Airlines
        SEA 19:06
        16h 13m
        1 stop
        DFW 13:19
        Seattle - Dallas | Wed, Sep 2 | Frontier Airlines
        US$224
        34% off
        US$338 US$224
      • DFW 13:00
        17h 25m
        1 stop
        SEA 14:00
        Dallas - Seattle | Tue, Jul 21 | Normal Airline
        SEA 15:00
        6h
        Nonstop
        DFW 16:00
        Seattle - Dallas | Thu, Jul 23 | Normal Airline
        Find more flights
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      • Cheapest nonstop
        DFW 21:03
        4h 20m
        Nonstop
        SEA 23:23
        Dallas - Seattle | Thu, Sep 10 | Alaska Airlines
        US$120 US$172
        30% off
        30% off
        US$172 US$120
      • DFW 06:20
        4h 18m
        Nonstop
        SEA 08:38
        Dallas - Seattle | Sat, Sep 12 | Alaska Airlines
        US$120 US$172
        30% off
        30% off
        US$172 US$120
      • DFW 08:00
        4h 33m
        Nonstop
        SEA 10:33
        Dallas - Seattle | Tue, Sep 1 | Alaska Airlines
        US$120 US$172
        30% off
        30% off
        US$172 US$120
      • DFW 21:31
        13h 48m
        1 stop
        SEA 09:19
        Dallas - Seattle | Tue, Sep 1 | Frontier Airlines
        US$83
        52% off
        US$172 US$83
      • DFW 11:11
        15h 16m
        1 stop
        SEA 00:27
        Dallas - Seattle | Sat, Sep 12 | Frontier Airlines
        US$83
        52% off
        US$172 US$83
      • DFW 09:07
        25h 57m
        1 stop
        SEA 09:04
        Dallas - Seattle | Sat, Aug 8 | Frontier Airlines
        US$115
        33% off
        US$172 US$115
      • DFW 21:31
        13h 48m
        1 stop
        SEA 09:19
        Dallas - Seattle | Tue, Aug 18 | Frontier Airlines
        US$117
        32% off
        US$172 US$117
      • DFW 08:05
        18h 22m
        1 stop
        SEA 00:27
        Dallas - Seattle | Tue, Sep 15 | Frontier Airlines
        US$120
        30% off
        US$172 US$120
      • DFW 09:07
        26h 12m
        1 stop
        SEA 09:19
        Dallas - Seattle | Mon, Aug 24 | Frontier Airlines
        US$120
        30% off
        US$172 US$120
      • DFW 21:31
        17h 51m
        1 stop
        SEA 13:22
        Dallas - Seattle | Mon, Aug 17 | Frontier Airlines
        US$120
        30% off
        US$172 US$120
      • DFW 13:00
        17h 25m
        1 stop
        SEA 14:00
        Dallas - Seattle | Tue, Jul 21 | Normal Airline
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Cheapest airlines flights from Dallas to Seattle

You can choose from 1 airlines that fly from Dallas to Seattle, including Alaska Airlines, Alaska Airlines has lowest fares on this route.
Alaska Airlines logo Alaska Airlines
Airlines are determined based on actual purchased flight tickets from Dallas to Seattle according to previous 12 months data from Trip.com.

Dallas to Seattle Flight Details

The distance between Dallas and Seattle is about 2,694.69 km. The average flying time from Dallas to Seattle is around 4 hours 24 minutes. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is December.

Cheapest one-way flight priceUS$83
Cheapest return ticket priceUS$188
Cheapest monthDecember
Peak season for travelJuly
Flight distance2,694.69 km
Average flight time4 hours 24 minutes
Popular airlineAlaska Airlines
Flight statistics for the Dallas–Seattle route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from Dallas to Seattle

Which month has the cheapest one-way flights from Dallas to Seattle?

Average monthly one-way flight prices from Dallas to Seattle, based on bookings made by Trip.com users over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Dallas to Seattle is October, with an average price of US$163; while the month with the highest flight price is usually June, with an average price of up to US$270.

US$270
US$217
US$163
US$110
    Cheapest
  • US$171
    Jul
  • US$192
    Aug
  • US$188
    Sep
  • US$163
    Oct
  • US$182
    Nov
  • US$247
    Dec
  • US$183
    Jan
  • US$209
    Feb
  • US$170
    Mar
  • US$189
    Apr
  • US$232
    May
  • US$270
    Jun

Which month has the cheapest round-trip flights from Dallas to Seattle?

The average price of round-trip flights from Dallas to Seattle purchased by Trip.com users by month over the past 12 months.

Based on data from Trip.com, the lowest prices for round-trip flights from Dallas to Seattle are found during November, with an average price of US$250. Conversely, the highest prices are found during January, with an average price of up to US$483.

US$483
US$367
US$250
US$134
    Cheapest
  • US$402
    Jul
  • US$342
    Aug
  • US$294
    Sep
  • US$428
    Oct
  • US$250
    Nov
  • US$375
    Dec
  • US$483
    Jan
  • US$443
    Feb
  • US$403
    Mar
  • US$279
    Apr
  • US$438
    May
  • US$467
    Jun

Frequently Asked Questions

  • What are the cheapest flights from Dallas to Seattle (DFW-SEA)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$83 on Cheapest nonstop routes (e.g. DFW to SEA on Tue, Sep 1), while Alaska Airlines offers Cheapest nonstop round-trips from US$188 departing on Wed, Aug 19 and returning on Wed, Aug 26.
  • At the moment, you can catch a nonstop flight from Dallas to Seattle with the following airlines, including: Alaska Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 4 hours 24 minutes to fly from Dallas to Seattle.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Dallas to Seattle 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.
  • Based on Trip.com data in the past 4 weeks, there is 106 flight per week flying from Dallas to Seattle. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS543 (06:37)
  • To find best deals on flights from Dallas to Seattle, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Sep 1, with one-way flights priced at just US$83.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Alaska Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Dallas to Seattle is December, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Dallas to Seattle on July 31, 2026 with Frontier Airlines, with prices starting at US$126.
  • You can land at any one of the following hubs in Seattle, with Dallas Fort Worth International Airport to Seattle-Tacoma International Airport (DFW-SEA) is by far the most common option on this route: King County (Boeing Field) International Airport (BFI) Kenmore Air Harbor Seaplane Base (LKE) Seattle-Tacoma International Airport (SEA).
  • The time difference between Seattle and Dallas is 2h.
  • Tickets can only be changed or canceled 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.

Trip.com Airline Insights on Flights from Dallas to Seattle

Which airline offers the cheapest direct flights from Dallas to Seattle?

Data is based on the average price of all nonstop flights from Dallas to Seattle on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, Frontier Airlines provides the lowest-priced direct flights from Dallas to Seattle, with fares starting at US$152.

US$102
US$152
US$203
US$253
US$303
Frontier Airlines
US$152
Frontier Airlines
Delta Air Lines
US$211
Delta Air Lines
Alaska Airlines
US$235
Alaska Airlines
Hawaiian Airlines
US$244
Hawaiian Airlines
American Airlines
US$267
American Airlines
United Airlines
US$303
United Airlines

Which airline operates the most flights from Dallas to Seattle?

Total flights from Dallas to Seattle across all airlines. (Based on Trip.com data from the past month)

Based on Trip.com’s data from the past month, American Airlines operates the most frequent flights from Dallas to Seattle, with 63 flights per week.

11
28
46
63
American Airlines
63
American Airlines
Qatar Airways
59
Qatar Airways
Alaska Airlines
45
Alaska Airlines
British Airways
32
British Airways
Finnair
29
Finnair
Gulf Air
28
Gulf Air

How many flights fly from Dallas to Seattle daily?

The data is based on the flight numbers for each day of the week from Dallas to Seattle within the Trip.com database over the past month.

Based on the past month's historical data from Trip.com, the number of flights from Dallas to Seattle is the highest on Friday and the lowest on Wednesday.

267
238
208
179
Highest
222
Mon
213
Tue
208
Wed
217
Thu
267
Fri
249
Sat
236
Sun

Explore More Popular Flights

Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.