Flights to Seattle/Tacoma Intl

$43 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 3/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Frontier Logo
12:51 pm - 3:05 pm
DEN
-
SEA
3h 14mnonstop
Frontier Logo
6:57 pm - 10:49 pm
SEA
-
DEN
2h 52mnonstop
$73Frontier
Fri, May 8 - Mon, May 18
Frontier Logo
7:15 am - 9:27 am
DEN
-
SEA
3h 12mnonstop
Frontier Logo
6:57 pm - 10:49 pm
SEA
-
DEN
2h 52mnonstop
$74Frontier
Sat, Apr 25 - Sat, Apr 25
Alaska Airlines Logo
6:30 am - 8:47 am
SFO
-
SEA
2h 17mnonstop
Alaska Airlines Logo
11:40 am - 2:02 pm
SEA
-
SFO
2h 22mnonstop
$132Alaska Airlines
Wed, Mar 4 - Wed, Mar 4
Alaska Airlines Logo
7:40 am - 6:54 pm
SFO
-
SEA
11h 14m
1 stop
Alaska Airlines Logo
1:30 pm - 3:44 pm
SEA
-
SFO
2h 14mnonstop
$134Alaska Airlines
Wed, May 20 - Wed, May 27
Delta Logo
7:29 pm - 9:48 pm
SFO
-
SEA
2h 19mnonstop
Delta Logo
7:25 am - 9:51 am
SEA
-
SFO
2h 26mnonstop
$137Delta
Tue, Mar 31 - Wed, Apr 8
Delta Logo
10:20 am - 12:38 pm
SFO
-
SEA
2h 18mnonstop
Delta Logo
9:55 pm - 12:06 am
SEA
-
SFO
2h 11mnonstop
$147Delta
Sat, Mar 7 - Sat, Mar 14
American Airlines Logo
5:00 am - 11:27 am
IAD
-
SEA
9h 27m
1 stop
American Airlines Logo
5:37 am - 4:34 pm
SEA
-
IAD
7h 57m
1 stop
$217American Airlines
Tue, Feb 24 - Sat, Feb 28
American Airlines Logo
1:44 pm - 9:06 pm
DCA
-
SEA
10h 22m
1 stop
American Airlines Logo
1:37 pm - 11:50 pm
SEA
-
DCA
7h 13m
1 stop
$217American Airlines
Tue, Feb 24 - Fri, Feb 27
United Airlines Logo
5:55 pm - 8:56 pm
IAD
-
SEA
6h 01mnonstop
United Airlines Logo
8:00 am - 4:02 pm
SEA
-
IAD
5h 02mnonstop
$237United Airlines
Wed, Mar 4 - Wed, Mar 11
United Airlines Logo
5:55 pm - 8:53 pm
IAD
-
SEA
5h 58mnonstop
United Airlines Logo
12:54 pm - 11:34 pm
SEA
-
IAD
7h 40m
1 stop
$247United Airlines
Tue, Apr 7 - Tue, Apr 14

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 February 8, 2026.
Use the filters below to find and compare flights to Seattle that are best for you.

Fly from

Route

Depart

Return

Price

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Fri 5/8

12:51 pm-3:05 pm

Nonstop3h 14m

Seattle/Tacoma Intl

Mon 5/18

6:57 pm-10:49 pm

Nonstop2h 52m

$73

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Sat 4/25

7:15 am-9:27 am

Nonstop3h 12m

Seattle/Tacoma Intl

Sat 4/25

6:57 pm-10:49 pm

Nonstop2h 52m

$74

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 3/4

6:30 am-8:47 am

Nonstop2h 17m

Seattle/Tacoma Intl

Wed 3/4

11:40 am-2:02 pm

Nonstop2h 22m

$132

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 5/20

7:40 am-6:54 pm

1 stop11h 14m

Seattle/Tacoma Intl

Wed 5/27

1:30 pm-3:44 pm

Nonstop2h 14m

$134

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 3/31

7:29 pm-9:48 pm

Nonstop2h 19m

Seattle/Tacoma Intl

Wed 4/8

7:25 am-9:51 am

Nonstop2h 26m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 3/7

10:20 am-12:38 pm

Nonstop2h 18m

Seattle/Tacoma Intl

Sat 3/14

9:55 pm-12:06 am

Nonstop2h 11m

$147

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 2/24

5:00 am-11:27 am

1 stop9h 27m

Seattle/Tacoma Intl

Sat 2/28

5:37 am-4:34 pm

1 stop7h 57m

$217

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Tue 2/24

1:44 pm-9:06 pm

1 stop10h 22m

Seattle/Tacoma Intl

Fri 2/27

1:37 pm-11:50 pm

1 stop7h 13m

$217

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Wed 3/4

5:55 pm-8:56 pm

Nonstop6h 01m

Seattle/Tacoma Intl

Wed 3/11

8:00 am-4:02 pm

Nonstop5h 02m

$237

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 4/7

5:55 pm-8:53 pm

Nonstop5h 58m

Seattle/Tacoma Intl

Tue 4/14

12:54 pm-11:34 pm

1 stop7h 40m

$247

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 $317.

What is the absolute cheapest flight to Seattle?

$127 is the cheapest deal found on momondo in the last two weeks for a flight to Seattle. This flight is from San Francisco and is 62% 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 $457. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday 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 $531.

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 $373 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $572. 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 $418 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 $344 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 ANGELESMarch22% cheaperFlying from Los Angeles to Seattle costs on average just $176 in March
MOST EXPENSIVE MONTH TO FLY TO SEATTLE FROM LOS ANGELESJune14% more expensiveIt costs about $257 for flights to Seattle from Los Angeles in June
MOST POPULAR MONTH TO FLY TO SEATTLE FROM LOS ANGELESJuly200% 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

$43

Best Round-Trip Price

$73

Fastest flight time

3h 00m

Popular in

December
The best one-way flight price to Seattle from United States in the last 72 hours is $43 (Denver Intl to Seattle/Tacoma Intl).
The best round-trip flight price to Seattle from United States in the last 72 hours is $73 (Denver Intl to Seattle/Tacoma Intl).
The fastest flight to Seattle from United States takes 3h 00m (Los Angeles to Seattle/Tacoma Intl).
December has the highest demand for flights to Seattle, with a 3% 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 Olympic Sculpture Park. Olympic Sculpture Park is particularly popular with tourists when the weather in Seattle is not ideal. If you’re looking for an art gallery near Seattle, R E Welch Gallery is usually a popular hotspot when the weather isn’t 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 $398 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 $297 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 $161 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
Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Westport
Kirkland
Centralia
Fife
Tumwater

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
Tue 3/10
Tue 3/17

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