Flights to Seattle/Tacoma Intl

$94 Cheap flights to Seattle

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Seattle departing on 9/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from the United States to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:15 am - 9:19 am
DEN
-
SEA
3h 04mnonstop
Frontier Logo
11:54 am - 11:21 pm
SEA
-
DEN
10h 27m
1 stop
$162Frontier
Fri, Aug 21 - Tue, Aug 25
Frontier Logo
7:00 am - 9:04 am
DEN
-
SEA
3h 04mnonstop
Frontier Logo
11:54 am - 9:24 am
SEA
-
DEN
20h 30m
1 stop
$165Frontier
Mon, Aug 17 - Mon, Aug 24
Frontier Logo
7:00 am - 9:04 am
DEN
-
SEA
3h 04mnonstop
Frontier Logo
9:29 pm - 3:48 am
SEA
-
DEN
29h 19m
1 stop
$167Frontier
Thu, Aug 13 - Thu, Aug 20
Frontier Logo
7:13 am - 9:17 am
DEN
-
SEA
3h 04mnonstop
Frontier Logo
7:06 pm - 10:58 pm
SEA
-
DEN
2h 52mnonstop
$168Frontier
Wed, Jul 29 - Wed, Aug 5
United Airlines Logo
9:07 pm - 11:26 pm
SFO
-
SEA
2h 19mnonstop
United Airlines Logo
7:35 pm - 9:57 pm
SEA
-
SFO
2h 22mnonstop
$172United Airlines
Fri, Aug 28 - Mon, Aug 31
United Airlines Logo
8:45 pm - 11:10 pm
SFO
-
SEA
2h 25mnonstop
United Airlines Logo
7:00 am - 9:18 am
SEA
-
SFO
2h 18mnonstop
$178United Airlines
Tue, Aug 4 - Thu, Aug 6
Alaska Airlines Logo
6:03 am - 8:48 am
IAD
-
SEA
5h 45mnonstop
Alaska Airlines Logo
8:49 pm - 6:14 pm
SEA
-
IAD
18h 25m
1 stop
$305Alaska Airlines
Sun, Aug 16 - Mon, Aug 24
Alaska Airlines Logo
7:00 am - 9:37 am
IAD
-
SEA
5h 37mnonstop
Alaska Airlines Logo
3:53 pm - 11:59 pm
SEA
-
IAD
5h 06mnonstop
$306Alaska Airlines
Fri, Sep 25 - Sat, Oct 3
Delta Logo
4:45 pm - 7:25 pm
DCA
-
SEA
5h 40mnonstop
Delta Logo
7:20 am - 3:32 pm
SEA
-
DCA
5h 12mnonstop
$315Delta
Mon, Sep 21 - Tue, Sep 29
American Airlines Logo
7:20 am - 1:46 pm
EWR
-
SEA
9h 26m
1 stop
American Airlines Logo
5:30 am - 7:15 pm
SEA
-
EWR
10h 45m
1 stop
$341American Airlines
Thu, Sep 10 - Sat, Sep 19

momondo Fare Finder

 
Locate flights to Seattle/Tacoma Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 832,500 searches and data was last updated on July 16, 2026.
Use the filters below to find and compare flights to Seattle that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Fri 8/21

7:15 am-9:19 am

Nonstop3h 04m

Seattle/Tacoma Intl

Tue 8/25

11:54 am-11:21 pm

1 stop10h 27m

$162

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Mon 8/17

7:00 am-9:04 am

Nonstop3h 04m

Seattle/Tacoma Intl

Mon 8/24

11:54 am-9:24 am

1 stop20h 30m

$165

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Thu 8/13

7:00 am-9:04 am

Nonstop3h 04m

Seattle/Tacoma Intl

Thu 8/20

9:29 pm-3:48 am

1 stop29h 19m

$167

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 7/29

7:13 am-9:17 am

Nonstop3h 04m

Seattle/Tacoma Intl

Wed 8/5

7:06 pm-10:58 pm

Nonstop2h 52m

$168
Quickest round-trip

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 8/28

9:07 pm-11:26 pm

Nonstop2h 19m

Seattle/Tacoma Intl

Mon 8/31

7:35 pm-9:57 pm

Nonstop2h 22m

$172

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 8/4

8:45 pm-11:10 pm

Nonstop2h 25m

Seattle/Tacoma Intl

Thu 8/6

7:00 am-9:18 am

Nonstop2h 18m

$178

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Sun 8/16

6:03 am-8:48 am

Nonstop5h 45m

Seattle/Tacoma Intl

Mon 8/24

8:49 pm-6:14 pm

1 stop18h 25m

$305

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Fri 9/25

7:00 am-9:37 am

Nonstop5h 37m

Seattle/Tacoma Intl

Sat 10/3

3:53 pm-11:59 pm

Nonstop5h 06m

$306

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Mon 9/21

4:45 pm-7:25 pm

Nonstop5h 40m

Seattle/Tacoma Intl

Tue 9/29

7:20 am-3:32 pm

Nonstop5h 12m

$315

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Thu 9/10

7:20 am-1:46 pm

1 stop9h 26m

Seattle/Tacoma Intl

Sat 9/19

5:30 am-7:15 pm

1 stop10h 45m

$341

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

Seattle flights insights and trends

Explore insights for your Seattle flight to craft the best travel plan

What is the cheapest month to fly to Seattle?

In general, October is the cheapest month to fly from United States to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $287. If you don’t want to visit Seattle in October, then you should wait until September to fly from United States, when ticket prices are also cheap, with an average price of $320.

What is the absolute cheapest flight to Seattle?

$100 is the cheapest deal found on momondo in the last two weeks for a flight to Seattle. This flight is from Vancouver and is 57% cheaper than most flights to Seattle. To find the cheapest price to Seattle from your area, use momondo’s Airport-to-Airport Pricing Tool.

See prices from:

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from United States is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $452. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from United States because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $525.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from United States in the evening is the least expensive time of day to depart. momondo users have found prices as low as $403 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $579. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $430 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from United States for as low as $369 on momondo.

Cheapest flights to Seattle/Tacoma Intl

Find the cheapest flights to Seattle/Tacoma Intl from your nearest city or airport
CHEAPEST MONTH TO FLY TO SEATTLE FROM LOS ANGELESMarch18% cheaperFlying from Los Angeles to Seattle costs on average just $206 in March
MOST EXPENSIVE MONTH TO FLY TO SEATTLE FROM LOS ANGELESJune30% more expensiveIt costs about $325 for flights to Seattle from Los Angeles in June
MOST POPULAR MONTH TO FLY TO SEATTLE FROM LOS ANGELESJuly201% more users visitedMore momondo users searched in flights to Seattle from Los Angeles in July than any other month

Cheap Seattle flight deals and tips

Summary info about Seattle flight prices, duration and airlines

Best One-Way Price

$94

Best Round-Trip Price

$162

Fastest flight time

2h 19m

Popular in

July
The best one-way flight price to Seattle from United States in the last 5 days is $94 (San Francisco to Seattle/Tacoma Intl).
The best round-trip flight price to Seattle from United States in the last 5 days is $162 (Denver Intl to Seattle/Tacoma Intl).
The fastest flight to Seattle from United States takes 2h 19m (San Francisco to Seattle/Tacoma Intl).
July has the highest demand for flights to Seattle, with a 18% price increase on average.

Frequently asked questions about flying to Seattle

What is there to do in Seattle when it’s raining?

If you are planning a flight to Seattle and are looking to avoid the rain, you should avoid traveling during the months of January, November, and December. These months will typically see 5.1 inches or more of rain, meaning that rain is likely. If you do run into rain while in Seattle, there are still things to do and ways to enjoy your trip. Those looking for a great museum with interesting exhibits should take time out of their trip to Seattle to go see Museum of Pop Culture. Museum of Pop Culture is particularly popular with tourists when the weather in Seattle is not ideal. Shopping centers like Pike Place Market are very popular destinations for those visiting the Seattle area. Pike Place Market is a great place to go if you’re looking to spend some time inside. Popular options when the weather doesn’t cooperate are indoor, family-friendly attractions like aquariums. Seattle has Seattle Aquarium nearby for tourists looking for something to do while avoiding the poor weather.

When is it best to fly to Seattle to go sightseeing?

The city of Seattle has many sights to see while visiting. Many tourists find it ideal to go sightseeing when the weather is warmer, but not blistering. Consider booking your flight to Seattle for October, when temperatures are a bit higher and the chance of rain is relatively low. Many travelers find it worthwhile to visit Pike Place Market, Space Needle, and Seattle Waterfront.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from United States when booking 83 days ahead of your departure date. In general, you can expect to find flights to Seattle for around $408 when searching 83 days out. Keep in mind that you might be able to find cheaper flights to Seattle at any time. In fact, our users found flights for as low as $299 in the past 72 hours.

Is there an alternative airport near Seattle?

Those flying to Seattle could potentially find better pricing at Seattle Lake Union Spb Airport (1 mi from Seattle city center), Seattle King County/Boeing Airport (6 mi from Seattle city center), Kenmore Air Harbor Airport (9 mi from Seattle city center), Everett Paine Field Airport (21 mi from Seattle city center) or Lopez Island Airport (66 mi from Seattle city center) depending on the month and departure airport.

Is there a cheaper alternative to flying into Seattle?

With an average price of $107 per person, Seattle Lake Union Spb Airport is the cheapest airport to fly into when planning your trip to Seattle. This price can fluctuate based on where you are flying from. momondo’s Airport-to-Airport Pricing Tool can help users find the best prices.

When did momondo last update prices for flights to Seattle/Tacoma Intl Airport?

Prices for flights to Seattle/Tacoma Intl Airport refresh daily.

How many operators does momondo search for flights to Seattle/Tacoma Intl Airport?

How old do you have to be to fly to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Redmond
Kent
Lakewood
Puyallup
Tukwila
Fife
Federal Way
Cle Elum
Marysville
Centralia
Kirkland
Shoreline
Lacey

Why use momondo?

Why should I use momondo to find a flight deal to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights to Seattle. Millions of users trust and use momondo every year so you are in good company.

Can I find flights to Seattle with flexible booking policies on momondo?

All flight searches to Seattle on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as filter your options to help you make an informed choice when booking flights to Seattle.

I’m not ready to book a flight to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track flight prices for Seattle and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
Sat 8/15
Sat 8/22

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