SLC - SEA

$142 Find Cheap Flights from Salt Lake City to Seattle - Compare and Save

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Everything you should know

Cheapest round-trip
$243
Typical prices: $179-$350
Frontier
Sat 10/13Wed 10/17
SLC - SEA • 1 stop
Cheapest non-stop
$257
Typical prices: $181-$352
Delta
Wed 9/19Sat 9/22
SLC - SEA • Non-stop
Advice from real travelers
Frontier Economy Bundle adds a carry-on and seat choice; Delta has free Wi-Fi.
Qatar includes free checked bags in Economy, while Alaska offers a baggage guarantee.
Expert advice
+1
Expert advice
+1
Nonstop flights
You can fly direct with Delta and Alaska Airlines. Average duration is 2h 19m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 56% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 36% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $156 (round-trip)
Shortest trip • 6h 20m (one-way)
Insights
Insights
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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

Tue, Oct 6 - Mon, Oct 12
Frontier Logo
8:00 am - 3:08 pmSLC  Salt Lake City-SEA Seattle/Tacoma Intl
8h 08m1 stop Denver Intl
Frontier Logo
4:27 pm - 12:19 amSEA  Seattle/Tacoma Intl-SLC Salt Lake City
6h 52m1 stop Denver Intl
$243Frontier
Sat, Oct 3 - Tue, Oct 6
Frontier Logo
12:04 pm - 6:36 pmSLC  Salt Lake City-SEA Seattle/Tacoma Intl
7h 32m1 stop Los Angeles
Frontier Logo
4:27 pm - 11:59 pmSEA  Seattle/Tacoma Intl-SLC Salt Lake City
6h 32m1 stop Denver Intl
$243Frontier
Fri, Oct 2 - Tue, Oct 6
Frontier Logo
9:28 am - 6:28 pmSLC  Salt Lake City-SEA Seattle/Tacoma Intl
10h 00m1 stop Las Vegas Harry Reid Intl
Frontier Logo
4:27 pm - 11:59 pmSEA  Seattle/Tacoma Intl-SLC Salt Lake City
6h 32m1 stop Denver Intl
$243Frontier
Mon, Dec 7 - Mon, Dec 7
Alaska Airlines Logo
7:00 am - 2:54 pmSLC  Salt Lake City-SEA Seattle/Tacoma Intl
8h 54m1 stop San Diego
Alaska Airlines Logo
6:25 pm - 9:31 pmSEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 06mnonstop
$251Alaska Airlines
Mon, Oct 5 - Mon, Oct 5
Alaska Airlines Logo
9:42 am - 11:02 amSLC  Salt Lake City-SEA Seattle/Tacoma Intl
2h 20mnonstop
Alaska Airlines Logo
2:59 pm - 9:46 pmSEA  Seattle/Tacoma Intl-SLC Salt Lake City
5h 47m1 stop San Diego
$251Alaska Airlines
Tue, Oct 13 - Sat, Oct 17
Delta Logo
3:34 pm - 4:55 pmSLC  Salt Lake City-SEA Seattle/Tacoma Intl
2h 21mnonstop
Delta Logo
7:15 am - 10:32 amSEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 17mnonstop
$257Delta
Sat, Oct 10 - Tue, Oct 13
Delta Logo
1:26 pm - 2:50 pmSLC  Salt Lake City-SEA Seattle/Tacoma Intl
2h 24mnonstop
Delta Logo
1:30 pm - 4:43 pmSEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 13mnonstop
$257Delta
Sat, Dec 5 - Tue, Dec 8
Alaska Airlines Logo
3:22 pm - 4:45 pmSLC  Salt Lake City-SEA Seattle/Tacoma Intl
2h 23mnonstop
Alaska Airlines Logo
11:25 am - 2:26 pmSEA  Seattle/Tacoma Intl-SLC Salt Lake City
2h 01mnonstop
$257Alaska Airlines
Wed, Dec 2 - Sat, Dec 5
Multiple Airlines Logo
7:00 am - 12:03 pmSLC  Salt Lake City-SEA Seattle/Tacoma Intl
6h 03m1 stop San Diego
Multiple Airlines Logo
5:25 pm - 12:30 amSEA  Seattle/Tacoma Intl-SLC Salt Lake City
6h 05m1 stop Denver Intl
$258Multiple Airlines
Tue, Dec 1 - Sat, Dec 5
Multiple Airlines Logo
7:44 pm - 11:00 pmSLC  Salt Lake City-SEA Seattle/Tacoma Intl
4h 16m1 stop Portland
Multiple Airlines Logo
5:25 pm - 12:30 amSEA  Seattle/Tacoma Intl-SLC Salt Lake City
6h 05m1 stop Denver Intl
$261Multiple Airlines
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 from Salt Lake City to Seattle 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 start at $243. Prices are typical for this route right now, with typical round-trip fares ranging from $179 to $350. The lowest price found in the past 5 days was $243 on Frontier.

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

Friday is the cheapest day of the week to fly from Salt Lake City to Seattle, it is 15% cheaper than the average day. Sunday is the most expensive day with flight prices 16% higher than average. Based on deals found by KAYAK users in the last 12 months.

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 $167 round-trip.
  • July ($338) and June ($337) 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 prices from Salt Lake City to Seattle the cheapest?

Flights from Salt Lake City to Seattle are cheapest 4 weeks before departure. Booking in this window typically costs about 56% 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
Stefanie Waldek

Stefanie Waldek

Expert on Qatar Airways, Delta and Frontier

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.

Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines, SLC and SEA

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.

Key details for Salt Lake City to Seattle flights

Low season

February

Cheapest flight

$142
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly with an average 29% increase in price.
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 travelers who flew the route from Salt Lake City to Seattle 
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Does Salt Lake City International Airport (SLC) have CLEAR?

    Upon arrival at SLC, you don't need to waste your time in long queues waiting for TSA security checks and clearance. The airport features a Biometric identity membership platform called CLEAR at Terminal 2, which allows you to authenticate your driver's license or passport digitally and confirms your identity.

  • Does Seattle-Tacoma International Airport (SEA) have a kid's play area?

    SEA has an awesome kids' play area located between concourse A and B. The play area features giant toys shaped like airport mainstays, a dream for toddlers and preschoolers. The kid play area also features an adult seating area with complimentary charging ports and Wi-Fi.

  • What is the fastest way to get from Seattle-Tacoma International Airport (SEA) to downtown Seattle?

    The fastest way to get to downtown Seattle from SEA is by taxi. Taxis at this airport are usually stationed on the 3rd Floor of the parking garage on the north and south curb. If you're not in a rush, you can take a short walk to the light rail station. Here, you'll board one of the light rail trains that run from the station to Westlake Center in downtown Seattle every 30min.

  • Where can I get help at SLC?

    If you need any sort of assistance at SLC, head to the baggage areas of any of the terminals. Across the baggage area you’ll go to, you’ll see an information desk managed by airport staff. Given all the staff at this airport are exceedingly friendly, you can count on them to provide you with the assistance you require.

  • 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:

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

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

  • What airlines are available from Salt Lake City to Seattle?

    2 airlines operate flights between Salt Lake City and Seattle. The airlines offering nonstop flights on this route include:
    • Delta
    • Alaska Airlines

  • 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 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:

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

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

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

    Three cabin classes are available on flights from Salt Lake City to Seattle:

    • Economy Class
    • Premium Economy Class
    • First Class

  • 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 nonstop options on average. Layover fares average $156 round-trip via Portland (PDX), compared to $268 for nonstop.

  • 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 $35–$100 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.

  • 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) - 81% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 10% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 4% of one-stop connections
    • Portland (PDX) - 2% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 28% on the Salt Lake City to Seattle route. Friday is the cheapest departure day at $224 round-trip on average, while Sunday is the most expensive at $307, a difference of $83. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • 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 45% of flights leaving in that window. Evening departures account for 33%, afternoon flights for 11%, and night flights for 11%.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pike Place Market, Pier 66 and Lumen Field. These are among the most viewed places in Seattle on KAYAK.

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

    A nonstop flight from Salt Lake City to Seattle takes 2h 19m, covering 687 miles.

  • 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 6:05 am and lands at 8:24 am
    • Latest: departs at 10:45 pm and lands at 1:04 am.

    The flight takes about 2h 19m.

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

    Last-minute fares on this route - booked within 2 weeks of departure - run 61% above the route average of $263. Book 4 weeks before departure for the lowest fares.

  • 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 a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • 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 $243 to $1,718. That means the highest observed fare was about 7x higher than the lowest one.

  • 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 $149, which is 21% below the typical average for this route.

  • How much time can I save by choosing a different layover airport 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 20m 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.

  • 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 starting from around $4 for economy cars. Top options include:
    · Fox
    · Europcar
    · Thrifty
    · Budget
    · Dollar

  • 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 $179 to $350, with an average of $263 over the past 12 months. Anything below $179 counts as a good deal.

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

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

    • • Alaska Airlines
    • • Delta

    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.

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 can be flexible, aim for a Friday departure instead of Sunday. On this route, Friday flights average $224 - about $83 less than Sunday (27% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 4 weeks before you fly. On this route, that window historically saves about 56% 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 $167 round-trip in that month - typically $171 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 $156 round-trip on this route - about $112 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.
    - Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport
    - Coast Gateway Hotel
    - Seattle Airport Marriott
  • If you brought something that is not allowed by the TSA at Salt Lake City International Airport (SLC), send it back home via the Airport Mailers drop box. The drop boxes are located next to the TSA security point and are used to mail home forbidden items.
  • Salt Lake City International Airport (SLC) is well equipped to facilitate travelers with functional needs. To cater to travelers with reduced mobility, it has elevators near stairs and escalators and ADA-compliant toilets in all areas with restrooms. Additionally, this airport has personnel who are always ready to help. Passengers who require a special security examination should call the airport's customer care team 72h before their flight.
  • If you are traveling with an animal through the SLC, you must keep it in a box, kennel, or another appropriate container. The only exceptions to this rule are working therapy dogs, law enforcement animals, and service animals trained to aid individuals with disabilities. While at this airport with your pet, you should check out its pet relief areas in Concourse A next to Gate A9 and Concourse B next to Gate B20.
  • Seattle-Tacoma International Airport (SEA) features a cell phone waiting lot with more than 200 parking spaces and free Wi-Fi. Located right across the street from the Airport Expressway's S. 170th Street exit, the waiting lot provides a comfortable space for your family and friends to wait for you while flying into the airport.
  • If you are an active or retired member of the forces, visit the USO Lounge at SEA, located on the landside side of the Main Terminal. This 2nd-floor lounge offers complimentary snacks and beverages, Wi-Fi, workstations, a children's play area with video games, a sleeping area with beds, and personal travel help.

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 direct 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 direct flights

Everything you need to know for your flight from Salt Lake City to Seattle

Information on your arrival and departure airports