What is the cheapest airline that flies from Seattle/Tacoma Intl to United States?

Delta, Frontier, and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to United States

How many flights depart from Seattle to United States on average per week?

The number of flights available between Seattle and United States is 3,315 per week as of September 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

What airlines fly to United States?

Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to United States from Seattle according to our data. Alaska Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 10 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

How many flights depart from Seattle to United States on average per day?

As of September 2025, there are 473 flights per day flying from Seattle to United States. The most common time of day flights depart is 7:00AM, with 39% of flights taking off at noon.

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

Prices for flights from Seattle/Tacoma Intl Airport to United States are refreshed on a daily basis.

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

As of September 2025, there are 9 operators available to choose from for flights from Seattle/Tacoma Intl Airport to United States.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to United States.

What documentation or ID do you need to fly to United States?

The required travel and health documents for your United States trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United States. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$59 Cheap Flights from Seattle to the United States in 2025/26

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Find the cheapest flights from Seattle to the United States

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:22 pm - 12:24 amSEA-PHX

3h 02mnonstop

6:00 am - 8:18 amPHX-SEA

3h 18mnonstop

$104Frontier

Find Deal

Thu, Nov 13 - Sun, Nov 16

8:43 pm - 11:50 pmSEA-ONT

27h 07m1 stop

10:30 am - 1:26 pmONT-SEA

2h 56mnonstop

$107Frontier

Find Deal

Fri, Oct 24 - Mon, Oct 27

6:05 pm - 8:36 pmSEA-LAS

2h 31mnonstop

6:00 am - 8:46 amLAS-SEA

2h 46mnonstop

$117Delta

Find Deal

Sat, Oct 11 - Sat, Oct 18

7:50 pm - 10:26 pmSEA-LAS

2h 36mnonstop

10:11 am - 1:00 pmLAS-SEA

2h 49mnonstop

$130Alaska Airlines

Find Deal

Wed, Oct 15 - Wed, Oct 22

7:00 am - 9:16 amSEA-SFO

2h 16mnonstop

11:22 am - 1:38 pmSFO-SEA

2h 16mnonstop

$131Alaska Airlines

Find Deal

Tue, Oct 14 - Tue, Oct 14

7:55 pm - 10:41 pmSEA-ONT

2h 46mnonstop

7:35 am - 10:35 amONT-SEA

3h 00mnonstop

$133Delta

Find Deal

Fri, Oct 24 - Thu, Oct 30

12:41 pm - 5:44 pmSEA-SAN

5h 03m1 stop

11:02 am - 9:13 pmSAN-SEA

10h 11m2 stops

$182United Airlines

Find Deal

Sat, Nov 8 - Sat, Nov 15

5:31 pm - 7:44 pmSEA-SFO

2h 13mnonstop

9:44 am - 12:02 pmSFO-SEA

2h 18mnonstop

$186United Airlines

Find Deal

Thu, Oct 9 - Sun, Oct 12

10:39 am - 5:00 pmSEA-ORD

4h 21mnonstop

11:05 am - 1:46 pmORD-SEA

4h 41mnonstop

$195American Airlines

Find Deal

Sat, Oct 25 - Fri, Oct 31

6:30 am - 2:44 pmSEA-HNL

11h 14m1 stop

9:40 pm - 10:24 amHNL-SEA

9h 44m1 stop

$362American Airlines

Find Deal

Mon, Oct 27 - Thu, Oct 30

Frontier flights from Seattle to United States

Our best Frontier deals on Seattle to United States flight tickets

Frontier

Nov 13

SEA8:22 pmSeattle/Tacoma Intl

3h 02m

PHX12:24 amPhoenix Sky Harbor Intl

Nov 16

PHX6:00 amPhoenix Sky Harbor Intl

3h 18m

SEA8:18 amSeattle/Tacoma Intl

$104

Find similar

Frontier

Oct 19

SEA9:58 pmSeattle/Tacoma Intl

2h 59m

PHX12:57 amPhoenix Sky Harbor Intl

Oct 24

PHX5:53 pmPhoenix Sky Harbor Intl

3h 15m

SEA9:08 pmSeattle/Tacoma Intl

$107

Find similar

Frontier

Dec 5

SEA10:05 pmSeattle/Tacoma Intl

2h 37m

LAS12:42 amLas Vegas Harry Reid Intl

Dec 8

LAS10:45 amLas Vegas Harry Reid Intl

2h 56m

SEA1:41 pmSeattle/Tacoma Intl

$108

Find similar

Hawaiian Airlines flights from Seattle to United States

Our best Hawaiian Airlines deals on Seattle to United States flight tickets

Hawaiian Airlines

Oct 25

SEA8:15 pmSeattle/Tacoma Intl

2h 14m

SFO10:29 pmSan Francisco

Oct 27

SFO6:18 pmSan Francisco

2h 17m

SEA8:35 pmSeattle/Tacoma Intl

$139

Find similar

Hawaiian Airlines

Oct 25

SEA8:15 pmSeattle/Tacoma Intl

2h 14m

SFO10:29 pmSan Francisco

Oct 27

SFO10:40 amSan Francisco

6h 14m

1 stop

SEA4:54 pmSeattle/Tacoma Intl

$140

Find similar

Hawaiian Airlines

Oct 25

SEA11:20 amSeattle/Tacoma Intl

4h 43m

1 stop

SFO4:03 pmSan Francisco

Oct 27

SFO6:18 pmSan Francisco

2h 17m

SEA8:35 pmSeattle/Tacoma Intl

$142

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Thu 11/13

8:22 pm-12:24 am

Nonstop3h 02m

Phoenix Sky Harbor Intl

Sun 11/16

6:00 am-8:18 am

Nonstop3h 18m

$104

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Fri 10/24

8:43 pm-11:50 pm

1 stop27h 07m

Ontario

Mon 10/27

10:30 am-1:26 pm

Nonstop2h 56m

$107

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Sat 10/11

6:05 pm-8:36 pm

Nonstop2h 31m

Las Vegas Harry Reid Intl

Sat 10/18

6:00 am-8:46 am

Nonstop2h 46m

$117

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Wed 10/15

7:50 pm-10:26 pm

Nonstop2h 36m

Las Vegas Harry Reid Intl

Wed 10/22

10:11 am-1:00 pm

Nonstop2h 49m

$130

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 10/14

7:00 am-9:16 am

Nonstop2h 16m

San Francisco

Tue 10/14

11:22 am-1:38 pm

Nonstop2h 16m

$131

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Fri 10/24

7:55 pm-10:41 pm

Nonstop2h 46m

Ontario

Thu 10/30

7:35 am-10:35 am

Nonstop3h 00m

$133

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 11/8

12:41 pm-5:44 pm

1 stop5h 03m

San Diego

Sat 11/15

11:02 am-9:13 pm

2 stops10h 11m

$182

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 10/9

5:31 pm-7:44 pm

Nonstop2h 13m

San Francisco

Sun 10/12

9:44 am-12:02 pm

Nonstop2h 18m

$186

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 10/25

10:39 am-5:00 pm

Nonstop4h 21m

Chicago O'Hare Intl

Fri 10/31

11:05 am-1:46 pm

Nonstop4h 41m

$195

SeattleHonolulu

SEA - HNL

SEAHNL

Seattle/Tacoma Intl

Mon 10/27

6:30 am-2:44 pm

1 stop11h 14m

Honolulu

Thu 10/30

9:40 pm-10:24 am

1 stop9h 44m

$362

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to United States

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to United States?

In general, September is the cheapest month to fly from Seattle to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $311. If you aren’t able to travel during the month of September, then book flights to United States from Seattle during February instead. Flights to United States in February, while not as cheap as those in September, still average around $323.

What is the cheapest day to depart on your flight to United States?

According to our data, Wednesday is the cheapest day to fly to United States from Seattle. The lowest ticket price found for a Wednesday departure recently was $425. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $560. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

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

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $379. Try not to purchase tickets in the morning because they tend to be around $505. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Seattle/Tacoma Intl to United States flight route?

Fly from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl for the best Seattle/Tacoma Intl - United States flight prices

How far in advance should I book a flight to United States?

You are more likely to see cheaper flights to United States from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $413 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Seattle for as low as $315 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to United States flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to United States flights?

No. A direct flight is the cheapest option for a flight between Seattle to United States.

Cheap Seattle to United States flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to United States

Best Price Found	$68
Fastest flight time	2h 08m
Direct flights	Every day
Airports in United States	1 airport

The best one-way flight to United States from Seattle in the past 72 hours is $68. The best round-trip flight deal from Seattle to United States found on momondo in the last 72 hours is $97.

The fastest flight from Seattle to United States takes 2h 08m

Direct flights go from Seattle to United States every day.

There is 1 airport near United States: San Francisco (SFO)

Search flight deals

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to United States?
Prices for flights from Seattle/Tacoma Intl Airport to United States are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to United States?
As of September 2025, there are 9 operators available to choose from for flights from Seattle/Tacoma Intl Airport to United States.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to United States?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to United States.
What documentation or ID do you need to fly to United States?
The required travel and health documents for your United States trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United States. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Seattle to United States?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to United States is Boeing 737-900 Passenger/BBJ3 (winglets) (17.58% of total bookings). The next most popular plane models are Boeing 737 MAX 9 (16.96%), Boeing 737-800 Passenger/BBJ2 (winglets) (16.70%), and Airbus A321neo (9.57%).

Best airlines flying from Seattle to United States

Compare and see reviews for airlines that fly from Seattle to United States with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $46	Free Cancellation	Rating 5.8 3,173 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $48	Free Cancellation	Rating 6.3 8,023 reviews	Search Spirit Airlines flights
Hawaiian Airlines	PriceFrom $78	Free Cancellation	Rating 7.8 2,729 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $97	Free Cancellation	Rating 7.9 7,961 reviews	Search Delta flights
United Airlines	PriceFrom $122	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Southwest	PriceFrom $127	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $131	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $131	Free Cancellation	Rating 7.2 2,914 reviews	Search JetBlue flights
Sun Country Air	PriceFrom $162	Free Cancellation	Rating 6.9 330 reviews	Search Sun Country Air flights
American Airlines	PriceFrom $167	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to United States. momondo saves you time and could save you money on your trip.

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

Yes. All flights to United States from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to United States?

momondo helps you find the best flight between Seattle and United States by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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

An easier way to manage your United States trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in the United States

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Flights to Orlandofrom $60

Flights to Las Vegasfrom $48

Flights to San Franciscofrom $53

Flights to Washington, D.C.from $49

Flights to Bostonfrom $62

Flights to Atlantafrom $51

Flights to Dallasfrom $68

Flights to Seattlefrom $69

Cheap flights from Seattle to the United States from $59

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to the United States departing on 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from Seattle to the United States

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Frontier flights from Seattle to United States

Our best Frontier deals on Seattle to United States flight tickets

Hawaiian Airlines flights from Seattle to United States

Our best Hawaiian Airlines deals on Seattle to United States flight tickets

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Use the filters below to find and compare flights from Seattle to the United States that are best for you.

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How to get the cheapest flight ticket from Seattle to United States

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to United States?

What is the cheapest day to depart on your flight to United States?

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

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $379. Try not to purchase tickets in the morning because they tend to be around $505. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Seattle/Tacoma Intl to United States flight route?

Fly from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl for the best Seattle/Tacoma Intl - United States flight prices

How far in advance should I book a flight to United States?

What cabin class options are available on Seattle/Tacoma Intl to United States flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to United States flights?

No. A direct flight is the cheapest option for a flight between Seattle to United States.

What is the cheapest airline that flies from Seattle/Tacoma Intl to United States?

Delta, Frontier, and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to United States

What airlines fly to United States?

How many flights depart from Seattle to United States on average per day?

As of September 2025, there are 473 flights per day flying from Seattle to United States. The most common time of day flights depart is 7:00AM, with 39% of flights taking off at noon.

How many flights depart from Seattle to United States on average per week?

The number of flights available between Seattle and United States is 3,315 per week as of September 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

Cheap Seattle to United States flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to United States

Best Price Found

Fastest flight time

Direct flights

Airports in United States

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

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

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

What documentation or ID do you need to fly to United States?

What is the most popular plane model from Seattle to United States?

Best airlines flying from Seattle to United States

Compare and see reviews for airlines that fly from Seattle to United States with momondo

Why use momondo?

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

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

How can momondo help me find flights from Seattle to United States?

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

An easier way to manage your United States trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo