SLC - SEA

C$ 124 Find Cheap Flights from Salt Lake City to Seattle – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
C$ 234
Typical prices: C$ 287-C$ 528
Delta
Wed 5/12Wed 12/12
SLC - SEA • Direct
Cheapest one-way flights
C$ 124
Typical prices: C$ 213-C$ 464
Southwest
Tue 4/12
SLC - SEA • 1 stop
Advice from real travellers
Compare bag fees and seat space on Alaska before booking this route.
For international trips, arrive 3 hours early for Seattle/Tacoma departures.
Expert advice
+1
Expert advice
+1
Direct flights
You can fly direct with Delta and Alaska Airlines. Average duration is 2h 24m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travellers who book at least 5 weeks in advance save around 51% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 43% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg C$ 218 (round-trip)
Shortest trip • 6h 59m (one-way)
Insights
Insights
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Seattle!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Salt Lake City to Seattle (SLC-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Salt Lake City to Seattle

Sat, 5 Dec - Sat, 12 Dec
Delta Logo
9:22 p.m. - 10:47 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
2h 25mdirect
Delta Logo
7:54 p.m. - 10:59 p.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 05mdirect
C$ 234Delta
14 hours ago
Thu, 3 Dec - Sat, 5 Dec
Southwest Logo
4:10 p.m. - 8:55 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
5h 45m1 stop San Diego
Southwest Logo
5:30 a.m. - 12:00 p.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
5h 30m1 stop Phoenix Sky Harbor Intl
C$ 248Southwest
2 days ago
Wed, 2 Dec - Wed, 9 Dec
Southwest Logo
6:40 a.m. - 1:00 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
7h 20m1 stop Las Vegas Harry Reid Intl
Southwest Logo
11:35 a.m. - 9:15 p.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
8h 40m2 stops Sacramento Intl Phoenix Sky Harbor Intl
C$ 255Southwest
2 days ago
Wed, 2 Dec - Wed, 9 Dec
Southwest Logo
11:10 a.m. - 7:40 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
9h 30m2 stops Las Vegas Harry Reid Intl San Jose
Southwest Logo
11:35 a.m. - 9:15 p.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
8h 40m2 stops Sacramento Intl Phoenix Sky Harbor Intl
C$ 262Southwest
2 days ago
Thu, 3 Dec - Sun, 6 Dec
Southwest Logo
6:40 a.m. - 1:00 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
7h 20m1 stop Las Vegas Harry Reid Intl
Southwest Logo
7:30 a.m. - 10:35 p.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
14h 05m2 stops Oakland Los Angeles
C$ 263Southwest
3+ days ago
Thu, 10 Dec - Tue, 12 Jan
Alaska Airlines Logo
7:20 p.m. - 8:59 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
2h 39mdirect
Alaska Airlines Logo
6:20 p.m. - 9:23 p.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 03mdirect
C$ 289Alaska Airlines
2 days ago
Mon, 7 Dec - Mon, 7 Dec
Alaska Airlines Logo
3:22 p.m. - 4:45 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
2h 23mdirect
Alaska Airlines Logo
6:30 p.m. - 9:39 p.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 09mdirect
C$ 296Alaska Airlines
14 hours ago
Tue, 8 Dec - Thu, 10 Dec
Alaska Airlines Logo
10:49 a.m. - 12:16 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
2h 27mdirect
Alaska Airlines Logo
11:25 a.m. - 2:26 p.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 01mdirect
C$ 303Alaska Airlines
13 hours ago
Wed, 2 Dec - Fri, 11 Dec
Alaska Airlines Logo
10:59 a.m. - 7:18 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
9h 19m1 stop San Diego
Alaska Airlines Logo
7:10 a.m. - 10:12 a.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 02mdirect
C$ 317Alaska Airlines
2 days ago
Tue, 26 Jan - Wed, 27 Jan
Alaska Airlines Logo
6:03 p.m. - 2:13 p.m.SLC  Salt Lake City-SEA Seattle/Tacoma Intl
21h 10m1 stop San Diego
Alaska Airlines Logo
5:56 p.m. - 8:59 p.m.SEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 03mdirect
C$ 320Alaska Airlines
3+ days ago
Booking Insights

Price, demand, and travel trends for Salt Lake City to Seattle flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Salt Lake City to Seattle?

Round-trip flights from Salt Lake City to Seattle typically range from C$ 287 to C$ 528. The lowest price found in the past 5 days was C$ 234, on Delta.

What's the cheapest day of the week to fly from Salt Lake City to Seattle?

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from Salt Lake City to Seattle. It's 7% cheaper than the average day, while Sunday is the most expensive, with prices 9% higher.

What is the cheapest month to fly from Salt Lake City to Seattle?

•February is the cheapest month to fly from Salt Lake City to Seattle at C$ 235 round-trip.
•July (C$ 475) and June (C$ 470) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 102% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Salt Lake City to Seattle the cheapest?

Flights from Salt Lake City to Seattle are cheapest 5 weeks before departure. Booking in this window typically costs about 51% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Salt Lake City to Seattle

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Key details for Salt Lake City to Seattle flights

Low season

December

Cheapest flight

C$ 124
Beat the crowds with an average 20% drop in traveller numbers.
The most popular month to fly with an average 34% increase in traveller numbers.
One-way flight from Salt Lake City to Seattle

When to book flights from Salt Lake City to Seattle

Are your dates flexible? Find out the best times to travel from Salt Lake City to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Salt Lake City to Seattle: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Salt Lake City to Seattle 
Verified travelerFlew with Alaska Airlines-Oct 2026
For big luggage, better to check them in.
Verified travelerFlew with Alaska Airlines-Feb 2025
if flying international, arrive three hours prior to departure
Verified travelerFlew with Alaska Airlines-Mar 2024
Research the details of the flight. Particularly, cost ofluggage, safety record, and seating per square foot. If you arrive safely, your fortunate. It was an excellent flight.

Your Salt Lake City to Seattle flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • What are the earliest and latest flights from Salt Lake City to Seattle?

    These are the earliest and latest flight times available from Salt Lake City to Seattle:

    • Earliest: departs at 7:00 am and lands at 9:24 am
    • Latest: departs at 10:55 pm and lands at 1:19 am.

    The flight takes about 2h 24m.

  • Which cabin classes can I book on flights from Salt Lake City to Seattle?

    Only Economy Class is available on flights from Salt Lake City to Seattle.

  • How long does a flight from Salt Lake City to Seattle take?

    A direct flight from Salt Lake City to Seattle takes 2h 24m, covering 1,780 km.

  • Do I need a passport to fly from Salt Lake City to Seattle?

    No, a passport is not required for this domestic route, but you will need another form of identification, such as a driver's licence.

  • How much should I expect to pay for a Salt Lake City to Seattle flight?

    Round-trip flights from Salt Lake City to Seattle range from C$ 287 to C$ 528, with an average of C$ 411 over the past 12 months. Anything below C$ 287 counts as a good deal.

  • How expensive are last-minute Salt Lake City to Seattle flights?

    Last-minute fares on this route (booked within two weeks of departure) run 65% above the C$ 411 route average. Book 5 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Salt Lake City to Seattle?

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 218 round-trip via Portland (PDX), compared to C$ 413 for direct.

  • What is the standard checked bag allowance on flights from Salt Lake City to Seattle?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 49–C$ 126 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Salt Lake City to Seattle?

    The Airbus A321neo family is used most often on this route, operated mainly by Delta. Other aircraft seen on the route include Boeing 737-900 variants.

  • How are flight departures from Salt Lake City to Seattle spread across the day?

    Morning is the busiest departure period on Salt Lake City to Seattle flights, with 40% leaving in that window. Afternoon departures account for 30%, Evening flights for 20%, and Night flights for 10%.

  • Have flight prices from Salt Lake City to Seattle changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 234 to C$ 1,334. That means the highest observed fare was about 6x higher than the lowest one.

  • Which airlines offer Wi-Fi on Salt Lake City to Seattle flights?

    Three airlines offer in-flight Wi-Fi on Salt Lake City to Seattle flights:

    • Delta
    • Alaska Airlines
    • JetBlue

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

  • How are flight prices from Salt Lake City to Seattle looking right now?

    One-way fares from Salt Lake City to Seattle are currently lower than usual. Average one-way flight prices are about C$ 181, which is 37% below the typical average for this route.

  • What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates averaging C$ 85 for economy cars. Top options include:

    • Europcar
    • Fox
    • Thrifty
    • Budget
    • Dollar

  • Which airports can I use when flying from Salt Lake City to Seattle?

    Flights from Salt Lake City to Seattle usually depart from Salt Lake City (SLC) and arrive at Seattle/Tacoma Intl (SEA).

  • Which airports do connecting flights from Salt Lake City to Seattle pass through?

    One-stop flights from Salt Lake City to Seattle most commonly connect through:

    • Denver Intl (DEN) – 77% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) – 11% of one-stop connections
    • San Diego (SAN) – 6% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) – 4% of one-stop connections

  • Can I save money by using flexible dates for flights from Salt Lake City to Seattle?

    Yes. Flexible dates can save you up to 15% on flights from Salt Lake City to Seattle. Friday is the cheapest departure day at C$ 383 round-trip on average, while Sunday is the most expensive at C$ 450, a difference of C$ 67.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • Which airlines fly from Salt Lake City to Seattle?

    2 airlines operate flights between Salt Lake City and Seattle. The airlines offering direct flights on this route include:

    • Delta
    • Alaska Airlines

  • How much time can I save by choosing a different layover airport when travelling from Salt Lake City to Seattle?

    Flying via Portland (PDX) gives the shortest average 1-stop total travel time at 3h 44m, compared with 6h 59m via San Diego (SAN) and 9h 35m via Phoenix Sky Harbor Intl (PHX).

  • What is the time difference between Salt Lake City and Seattle?

    Seattle is 1 hour behind Salt Lake City (Pacific Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Lumen Field, T-Mobile Park, and Climate Pledge Arena. These are among the most viewed places in Seattle on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Salt Lake City to Seattle flights?

    Among airlines operating Salt Lake City to Seattle flights:

    • Delta: offers extra legroom; offers free seat selection
    • Alaska Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Salt Lake City to Seattle flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Delta: a carry-on bag and a checked bag in Economy Class
    • Alaska Airlines: a carry-on bag and a checked bag in Economy Class
    • Hawaiian Airlines: a cabin bag in Economy Class class

    Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

Your guide to booking Salt Lake City to Seattle flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Sunday. On this route, Friday flights average C$ 383, about C$ 67 less than Sunday fares (15% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 5 weeks before you fly. On this route, that window historically saves about 51% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Salt Lake City to Seattle trip for February. Fares historically average C$ 235 round-trip in that month – typically C$ 241 less than the most expensive month, which is July (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Portland Airport (PDX) can be cheaper than flying direct. The cheapest layover option averages C$ 218 round-trip on this route – about C$ 195 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.

    • Coast Gateway Hotel
    • Seattle Airport Marriott
    • Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

Prefer to fly direct from Salt Lake City to Seattle?

 
Find which airlines fly direct from Salt Lake City Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Salt Lake City to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more nonstop flights

Direct returns

Seattle/Tacoma Intl to Salt Lake City

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more nonstop flights

More options for your flight from Salt Lake City to Seattle

Complete your trip to Seattle with a hotel stay or car rental