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

The number of flights available between Seattle and United States is 2,351 per week as of November 2025. The most frequent departure day is Mon, with 21% of weekly flights leaving on this day.

How often are flights from Seattle to the United States delayed?

Historically, on average around 15% of flights between Seattle and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 137 minutes.

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

As of November 2025, there are 335 flights per day flying from Seattle to United States. The most common time of day flights depart is 7:00AM, with 42% of flights taking off at noon.

What is the most punctual flight time for Seattle to the United States flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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.

Which airline has the best punctuality record on Seattle to the United States flights?

According to our data, Air Chathams have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

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

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

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 November 2025, there are 10 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.

$38 Cheap Flights from Seattle to the United States in 2025/26

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:33 pm - 9:08 pmSEA-LAS

2h 35mnonstop

6:15 am - 9:04 amLAS-SEA

2h 49mnonstop

$71Frontier

Find Deal

Mon, Jan 5 - Sun, Jan 11

9:23 pm - 11:59 pmSEA-LAS

2h 36mnonstop

6:15 am - 9:04 amLAS-SEA

2h 49mnonstop

$72Frontier

Find Deal

Thu, Jan 8 - Sun, Jan 11

7:10 am - 10:02 amSEA-SAN

2h 52mnonstop

5:35 pm - 8:48 pmSAN-SEA

3h 13mnonstop

$119Delta

Find Deal

Thu, Jan 8 - Tue, Jan 13

7:10 am - 10:02 amSEA-SAN

2h 52mnonstop

1:45 pm - 4:57 pmSAN-SEA

3h 12mnonstop

$120Delta

Find Deal

Thu, Jan 8 - Sun, Jan 11

7:20 am - 10:00 amSEA-ONT

2h 40mnonstop

10:44 am - 1:35 pmONT-SEA

2h 51mnonstop

$137Alaska Airlines

Find Deal

Sat, Jan 3 - Tue, Jan 6

12:31 pm - 3:08 pmSEA-ONT

2h 37mnonstop

6:00 am - 8:54 amONT-SEA

2h 54mnonstop

$138Alaska Airlines

Find Deal

Sat, Jan 10 - Sun, Jan 18

6:15 am - 6:42 pmSEA-EWR

9h 27m1 stop

5:40 pm - 11:25 pmEWR-SEA

8h 45m1 stop

$217American Airlines

Find Deal

Mon, Dec 8 - Wed, Dec 10

7:00 am - 3:19 pmSEA-EWR

5h 19mnonstop

7:45 am - 11:07 amEWR-SEA

6h 22mnonstop

$218United Airlines

Find Deal

Tue, Jan 6 - Fri, Jan 9

10:40 am - 8:44 pmSEA-EWR

7h 04m1 stop

7:25 pm - 10:38 pmEWR-SEA

6h 13mnonstop

$219United Airlines

Find Deal

Wed, Dec 10 - Fri, Dec 12

7:35 am - 7:52 pmSEA-EWR

9h 17m1 stop

7:00 am - 1:14 pmEWR-SEA

9h 14m1 stop

$224American Airlines

Find Deal

Wed, Jan 14 - Sun, Jan 18

Frontier flights from Seattle to United States

Our best Frontier deals on Seattle to United States flight tickets

Frontier

Jan 5

SEA6:33 pmSeattle/Tacoma Intl

2h 35m

LAS9:08 pmLas Vegas Harry Reid Intl

Jan 11

LAS6:15 amLas Vegas Harry Reid Intl

2h 49m

SEA9:04 amSeattle/Tacoma Intl

$71

Find similar

Frontier

Jan 8

SEA9:23 pmSeattle/Tacoma Intl

2h 36m

LAS11:59 pmLas Vegas Harry Reid Intl

Jan 11

LAS6:15 amLas Vegas Harry Reid Intl

2h 49m

SEA9:04 amSeattle/Tacoma Intl

$72

Find similar

Frontier

Dec 15

SEA11:01 amSeattle/Tacoma Intl

2h 37m

LAS1:38 pmLas Vegas Harry Reid Intl

Dec 22

LAS7:15 amLas Vegas Harry Reid Intl

2h 56m

SEA10:11 amSeattle/Tacoma Intl

$76

Find similar

Southwest flights from Seattle to United States

Our best Southwest deals on Seattle to United States flight tickets

Southwest

Feb 4

SEA1:20 pmSeattle/Tacoma Intl

2h 30m

LAS3:50 pmLas Vegas Harry Reid Intl

Feb 7

LAS5:30 pmLas Vegas Harry Reid Intl

2h 50m

SEA8:20 pmSeattle/Tacoma Intl

$107

Find similar

Southwest

Jan 6

SEA9:30 amSeattle/Tacoma Intl

6h 55m

1 stop

LAS4:25 pmLas Vegas Harry Reid Intl

Jan 7

LAS2:50 pmLas Vegas Harry Reid Intl

7h 40m

1 stop

SEA10:30 pmSeattle/Tacoma Intl

$116

Find similar

Southwest

Feb 4

SEA6:25 amSeattle/Tacoma Intl

6h 00m

2 stops

LAS12:25 pmLas Vegas Harry Reid Intl

Feb 10

LAS6:00 amLas Vegas Harry Reid Intl

6h 05m

1 stop

SEA12:05 pmSeattle/Tacoma Intl

$122

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Mon 1/5

6:33 pm-9:08 pm

Nonstop2h 35m

Las Vegas Harry Reid Intl

Sun 1/11

6:15 am-9:04 am

Nonstop2h 49m

$71

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Thu 1/8

9:23 pm-11:59 pm

Nonstop2h 36m

Las Vegas Harry Reid Intl

Sun 1/11

6:15 am-9:04 am

Nonstop2h 49m

$72

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 1/8

7:10 am-10:02 am

Nonstop2h 52m

San Diego

Tue 1/13

5:35 pm-8:48 pm

Nonstop3h 13m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 1/8

7:10 am-10:02 am

Nonstop2h 52m

San Diego

Sun 1/11

1:45 pm-4:57 pm

Nonstop3h 12m

$120

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 1/3

7:20 am-10:00 am

Nonstop2h 40m

Ontario

Tue 1/6

10:44 am-1:35 pm

Nonstop2h 51m

$137

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 1/10

12:31 pm-3:08 pm

Nonstop2h 37m

Ontario

Sun 1/18

6:00 am-8:54 am

Nonstop2h 54m

$138

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Mon 12/8

6:15 am-6:42 pm

1 stop9h 27m

Newark

Wed 12/10

5:40 pm-11:25 pm

1 stop8h 45m

$217

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Tue 1/6

7:00 am-3:19 pm

Nonstop5h 19m

Newark

Fri 1/9

7:45 am-11:07 am

Nonstop6h 22m

$218

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Wed 12/10

10:40 am-8:44 pm

1 stop7h 04m

Newark

Fri 12/12

7:25 pm-10:38 pm

Nonstop6h 13m

$219

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Wed 1/14

7:35 am-7:52 pm

1 stop9h 17m

Newark

Sun 1/18

7:00 am-1:14 pm

1 stop9h 14m

$224

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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

Prices

Airlines

Delays

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 $297. If you aren’t able to travel during the month of September, then book flights to United States from Seattle during October instead. Flights to United States in October, while not as cheap as those in September, still average around $297.

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 $411. 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 $559. 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 $373. Try not to purchase tickets in the morning because they tend to be around $485. 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 $403 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 $317 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	0h 50m
Direct flights	Every day
Airports in United States	2 airports

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 $108.

The fastest flight from Seattle to United States takes 0h 50m

Direct flights go from Seattle to United States every day.

There are 2 airports near United States: Ontario (ONT), Las Vegas Harry Reid Intl (LAS)

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 November 2025, there are 10 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 737-800 Passenger/BBJ2 (winglets) (17.29% of total bookings). The next most popular plane models are Airbus A321neo (12.95%), Boeing 737 MAX 9 (11.97%), and Boeing 737-900 Passenger/BBJ3 (winglets) (10.08%).

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 $48	Free Cancellation	Rating 5.8 3,100 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $54	Free Cancellation	Rating 6.3 8,158 reviews	Search Spirit Airlines flights
Hawaiian Airlines	PriceFrom $78	Free Cancellation	Rating 7.8 2,815 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $105	Free Cancellation	Rating 7.9 7,998 reviews	Search Delta flights
Southwest	PriceFrom $118	Free Cancellation	Rating 8.0 4,253 reviews	Search Southwest flights
United Airlines	PriceFrom $126	Free Cancellation	Rating 7.4 9,046 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $134	Free Cancellation	Rating 8.0 11,357 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $138	Free Cancellation	Rating 7.2 2,905 reviews	Search JetBlue flights
Sun Country Air	PriceFrom $162	Free Cancellation	Rating 6.9 333 reviews	Search Sun Country Air flights
American Airlines	PriceFrom $176	Free Cancellation	Rating 7.2 11,038 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.

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Cheap flights from Seattle to the United States from $38

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 1/2. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Seattle to the United States

Cheap round-trip flights

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Frontier flights from Seattle to United States

Our best Frontier deals on Seattle to United States flight tickets

Southwest flights from Seattle to United States

Our best Southwest 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 $373. Try not to purchase tickets in the morning because they tend to be around $485. 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, Southwest, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to United States

What airlines fly to United States?

How often are flights from Seattle to the United States delayed?

Historically, on average around 15% of flights between Seattle and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 137 minutes.

What is the most punctual flight time for Seattle to the United States flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Seattle to the United States flights?

According to our data, Air Chathams have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

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

As of November 2025, there are 335 flights per day flying from Seattle to United States. The most common time of day flights depart is 7:00AM, with 42% 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 2,351 per week as of November 2025. The most frequent departure day is Mon, with 21% 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